Apertura del repositorio

indra/newview/app_settings/shaders/class1/avatar/avatarF.glsl

@@ -0,0 +1,34 @@
+/**
+ * @file avatarF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+
+
+void default_lighting();
+
+void main()
+{
+    default_lighting();
+}
+

indra/newview/app_settings/shaders/class1/avatar/avatarSkinV.glsl

@@ -0,0 +1,49 @@
+/**
+ * @file avatarSkinV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+
+in vec4 weight;
+
+uniform vec4 matrixPalette[45];
+
+mat4 getSkinnedTransform()
+{
+    mat4 ret;
+    int i = int(floor(weight.x));
+    float x = fract(weight.x);
+
+    ret[0] = mix(matrixPalette[i+0], matrixPalette[i+1], x);
+    ret[1] = mix(matrixPalette[i+15],matrixPalette[i+16], x);
+    ret[2] = mix(matrixPalette[i+30],matrixPalette[i+31], x);
+    ret[3] = vec4(0,0,0,1);
+
+    return ret;
+
+#ifdef IS_AMD_CARD
+    // If it's AMD make sure the GLSL compiler sees the arrays referenced once by static index. Otherwise it seems to optimise the storage awawy which leads to unfun crashes and artifacts.
+    vec4 dummy1 = matrixPalette[0];
+    vec4 dummy2 = matrixPalette[44];
+#endif
+}

indra/newview/app_settings/shaders/class1/avatar/avatarV.glsl

@@ -0,0 +1,70 @@
+/**
+ * @file avatarV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 projection_matrix;
+
+in vec3 position;
+in vec3 normal;
+in vec2 texcoord0;
+
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
+
+uniform vec4 color;
+
+vec4 calcLighting(vec3 pos, vec3 norm, vec4 color);
+mat4 getSkinnedTransform();
+void calcAtmospherics(vec3 inPositionEye);
+
+void main()
+{
+    vary_texcoord0 = texcoord0;
+
+    vec4 pos;
+    vec3 norm;
+
+    vec4 pos_in = vec4(position.xyz, 1.0);
+
+    mat4 trans = getSkinnedTransform();
+    pos.x = dot(trans[0], pos_in);
+    pos.y = dot(trans[1], pos_in);
+    pos.z = dot(trans[2], pos_in);
+    pos.w = 1.0;
+
+    norm.x = dot(trans[0].xyz, normal);
+    norm.y = dot(trans[1].xyz, normal);
+    norm.z = dot(trans[2].xyz, normal);
+    norm = normalize(norm);
+
+    gl_Position = projection_matrix * pos;
+
+    calcAtmospherics(pos.xyz);
+
+    vec4 col = calcLighting(pos.xyz, norm, color);
+    vertex_color = col;
+
+}
+
+

indra/newview/app_settings/shaders/class1/avatar/eyeballF.glsl

@@ -0,0 +1,34 @@
+/**
+ * @file eyeballF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+
+
+void default_lighting();
+
+void main()
+{
+    default_lighting();
+}
+

indra/newview/app_settings/shaders/class1/avatar/eyeballV.glsl

@@ -0,0 +1,59 @@
+/**
+ * @file eyeballV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat3 normal_matrix;
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_matrix;
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec3 normal;
+in vec2 texcoord0;
+
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
+
+vec4 calcLightingSpecular(vec3 pos, vec3 norm, vec4 color, inout vec4 specularColor);
+void calcAtmospherics(vec3 inPositionEye);
+
+void main()
+{
+    //transform vertex
+    vec3 pos = (modelview_matrix * vec4(position.xyz, 1.0)).xyz;
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+
+
+    vec3 norm = normalize(normal_matrix * normal);
+
+    calcAtmospherics(pos.xyz);
+
+    vec4 specular = vec4(1.0);
+    vec4 color = calcLightingSpecular(pos, norm, diffuse_color, specular);
+    vertex_color = color;
+
+}
+

indra/newview/app_settings/shaders/class1/avatar/objectSkinV.glsl

@@ -0,0 +1,72 @@
+/**
+ * @file objectSkinV.glsl
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+in vec4 weight4;
+
+uniform mat3x4 matrixPalette[MAX_JOINTS_PER_MESH_OBJECT];
+
+mat4 getObjectSkinnedTransform()
+{
+    int i;
+
+    vec4 w = fract(weight4);
+    vec4 index = floor(weight4);
+
+    index = min(index, vec4(MAX_JOINTS_PER_MESH_OBJECT-1));
+    index = max(index, vec4( 0.0));
+
+    w *= 1.0/(w.x+w.y+w.z+w.w);
+
+    int i1 = int(index.x);
+    int i2 = int(index.y);
+    int i3 = int(index.z);
+    int i4 = int(index.w);
+
+    mat3 mat = mat3(matrixPalette[i1])*w.x;
+         mat += mat3(matrixPalette[i2])*w.y;
+         mat += mat3(matrixPalette[i3])*w.z;
+         mat += mat3(matrixPalette[i4])*w.w;
+
+    vec3 trans = vec3(matrixPalette[i1][0].w,matrixPalette[i1][1].w,matrixPalette[i1][2].w)*w.x;
+         trans += vec3(matrixPalette[i2][0].w,matrixPalette[i2][1].w,matrixPalette[i2][2].w)*w.y;
+         trans += vec3(matrixPalette[i3][0].w,matrixPalette[i3][1].w,matrixPalette[i3][2].w)*w.z;
+         trans += vec3(matrixPalette[i4][0].w,matrixPalette[i4][1].w,matrixPalette[i4][2].w)*w.w;
+
+    mat4 ret;
+
+    ret[0] = vec4(mat[0], 0);
+    ret[1] = vec4(mat[1], 0);
+    ret[2] = vec4(mat[2], 0);
+    ret[3] = vec4(trans, 1.0);
+
+    return ret;
+
+#ifdef IS_AMD_CARD
+   // If it's AMD make sure the GLSL compiler sees the arrays referenced once by static index. Otherwise it seems to optimise the storage awawy which leads to unfun crashes and artifacts.
+   mat3x4 dummy1 = matrixPalette[0];
+   mat3x4 dummy2 = matrixPalette[MAX_JOINTS_PER_MESH_OBJECT-1];
+#endif
+
+}
+

indra/newview/app_settings/shaders/class1/deferred/SMAABlendWeightsF.glsl

@@ -0,0 +1,57 @@
+/**
+ * @file SMAABlendWeightsF.glsl
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+in vec2 vary_texcoord0;
+in vec2 vary_pixcoord;
+in vec4 vary_offset[3];
+
+uniform sampler2D edgesTex;
+uniform sampler2D areaTex;
+uniform sampler2D searchTex;
+
+vec4 SMAABlendingWeightCalculationPS(vec2 texcoord,
+                                       vec2 pixcoord,
+                                       vec4 offset[3],
+                                       sampler2D edgesTex,
+                                       sampler2D areaTex,
+                                       sampler2D searchTex,
+                                       vec4 subsampleIndices);
+
+void main()
+{
+    frag_color = SMAABlendingWeightCalculationPS(vary_texcoord0,
+                                                 vary_pixcoord,
+                                                 vary_offset,
+                                                 edgesTex,
+                                                 areaTex,
+                                                 searchTex,
+                                                 vec4(0.0)
+                                                 );
+}
+

indra/newview/app_settings/shaders/class1/deferred/SMAABlendWeightsV.glsl

@@ -0,0 +1,51 @@
+/**
+ * @file SMAABlendWeightsV.glsl
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+
+out vec2 vary_texcoord0;
+out vec2 vary_pixcoord;
+out vec4 vary_offset[3];
+
+#define float4 vec4
+#define float2 vec2
+void SMAABlendingWeightCalculationVS(float2 texcoord,
+                                     out float2 pixcoord,
+                                     out float4 offset[3]);
+
+void main()
+{
+    gl_Position = vec4(position.xyz, 1.0);
+    vary_texcoord0 = (gl_Position.xy*0.5+0.5);
+
+    SMAABlendingWeightCalculationVS(vary_texcoord0,
+                                    vary_pixcoord,
+                                    vary_offset);
+}
+

indra/newview/app_settings/shaders/class1/deferred/SMAAEdgeDetectF.glsl

@@ -0,0 +1,59 @@
+/**
+ * @file SMAAEdgeDetectF.glsl
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+in vec2 vary_texcoord0;
+in vec4 vary_offset[3];
+
+uniform sampler2D diffuseRect;
+#if SMAA_PREDICATION
+uniform sampler2D predicationTex;
+#endif
+
+#define float4 vec4
+#define float2 vec2
+#define SMAATexture2D(tex) sampler2D tex
+
+float2 SMAAColorEdgeDetectionPS(float2 texcoord,
+                                float4 offset[3],
+                                SMAATexture2D(colorTex)
+                                #if SMAA_PREDICATION
+                                , SMAATexture2D(predicationTex)
+                                #endif
+                                );
+
+void main()
+{
+    vec2 val = SMAAColorEdgeDetectionPS(vary_texcoord0,
+                                          vary_offset,
+                                          diffuseRect
+                                          #if SMAA_PREDICATION
+                                          , predicationTex
+                                          #endif
+                                          );
+    frag_color = float4(val,0.0,0.0);
+}

indra/newview/app_settings/shaders/class1/deferred/SMAAEdgeDetectV.glsl

@@ -0,0 +1,45 @@
+/**
+ * @file SMAAEdgeDetectV.glsl
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+
+out vec2 vary_texcoord0;
+out vec4 vary_offset[3];
+
+#define float4 vec4
+#define float2 vec2
+void SMAAEdgeDetectionVS(float2 texcoord,
+                         out float4 offset[3]);
+
+void main()
+{
+    gl_Position = vec4(position.xyz, 1.0);
+    vary_texcoord0 = (gl_Position.xy*0.5+0.5);
+
+    SMAAEdgeDetectionVS(vary_texcoord0, vary_offset);
+}

indra/newview/app_settings/shaders/class1/deferred/SMAANeighborhoodBlendF.glsl

@@ -0,0 +1,63 @@
+/**
+ * @file SMAANeighborhoodBlendF.glsl
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+in vec2 vary_texcoord0;
+in vec4 vary_offset;
+
+uniform sampler2D diffuseRect;
+uniform sampler2D blendTex;
+#if SMAA_REPROJECTION
+uniform sampler2D velocityTex;
+#endif
+
+#define float4 vec4
+#define float2 vec2
+#define SMAATexture2D(tex) sampler2D tex
+
+float4 SMAANeighborhoodBlendingPS(float2 texcoord,
+                                  float4 offset,
+                                  SMAATexture2D(colorTex),
+                                  SMAATexture2D(blendTex)
+                                  #if SMAA_REPROJECTION
+                                  , SMAATexture2D(velocityTex)
+                                  #endif
+                                  );
+
+void main()
+{
+    frag_color = SMAANeighborhoodBlendingPS(vary_texcoord0,
+                                            vary_offset,
+                                            diffuseRect,
+                                            blendTex
+                                            #if SMAA_REPROJECTION
+                                            , velocityTex
+                                            #endif
+                                            );
+}
+

indra/newview/app_settings/shaders/class1/deferred/SMAANeighborhoodBlendV.glsl

@@ -0,0 +1,47 @@
+/**
+ * @file SMAANeighborhoodBlendV.glsl
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+
+out vec2 vary_texcoord0;
+out vec4 vary_offset;
+
+#define float4 vec4
+#define float2 vec2
+void SMAANeighborhoodBlendingVS(float2 texcoord,
+                                out float4 offset);
+
+void main()
+{
+    gl_Position = vec4(position.xyz, 1.0);
+    vary_texcoord0 = (gl_Position.xy*0.5+0.5);
+
+    SMAANeighborhoodBlendingVS(vary_texcoord0, vary_offset);
+}
+

indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl

@@ -0,0 +1,139 @@
+/**
+ * @file alphaV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#define INDEXED 1
+#define NON_INDEXED 2
+#define NON_INDEXED_NO_COLOR 3
+
+uniform mat3 normal_matrix;
+uniform mat4 texture_matrix0;
+uniform mat4 projection_matrix;
+uniform mat4 modelview_matrix;
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+
+#ifdef USE_INDEXED_TEX
+void passTextureIndex();
+#endif
+
+in vec3 normal;
+
+#ifdef USE_VERTEX_COLOR
+in vec4 diffuse_color;
+#endif
+
+in vec2 texcoord0;
+
+#ifdef HAS_SKIN
+mat4 getObjectSkinnedTransform();
+#else
+#ifdef IS_AVATAR_SKIN
+mat4 getSkinnedTransform();
+#endif
+#endif
+
+out vec3 vary_fragcoord;
+out vec3 vary_position;
+
+#ifdef USE_VERTEX_COLOR
+out vec4 vertex_color;
+#endif
+
+out vec2 vary_texcoord0;
+out vec3 vary_norm;
+
+uniform float near_clip;
+
+void main()
+{
+    vec4 pos;
+    vec3 norm;
+
+    //transform vertex
+#ifdef HAS_SKIN
+    mat4 trans = getObjectSkinnedTransform();
+    trans = modelview_matrix * trans;
+
+    pos = trans * vec4(position.xyz, 1.0);
+
+    norm = position.xyz + normal.xyz;
+    norm = normalize((trans * vec4(norm, 1.0)).xyz - pos.xyz);
+    vec4 frag_pos = projection_matrix * pos;
+    gl_Position = frag_pos;
+#else
+
+#ifdef IS_AVATAR_SKIN
+    mat4 trans = getSkinnedTransform();
+    vec4 pos_in = vec4(position.xyz, 1.0);
+    pos.x = dot(trans[0], pos_in);
+    pos.y = dot(trans[1], pos_in);
+    pos.z = dot(trans[2], pos_in);
+    pos.w = 1.0;
+
+    norm.x = dot(trans[0].xyz, normal);
+    norm.y = dot(trans[1].xyz, normal);
+    norm.z = dot(trans[2].xyz, normal);
+    norm = normalize(norm);
+
+    vec4 frag_pos = projection_matrix * pos;
+    gl_Position = frag_pos;
+#else
+    norm = normalize(normal_matrix * normal);
+    vec4 vert = vec4(position.xyz, 1.0);
+    pos = (modelview_matrix * vert);
+    gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
+#endif //IS_AVATAR_SKIN
+
+#endif // HAS_SKIN
+
+#ifdef USE_INDEXED_TEX
+    passTextureIndex();
+#endif
+
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+
+    vary_norm = norm;
+    vary_position = pos.xyz;
+
+#ifdef USE_VERTEX_COLOR
+    vertex_color = diffuse_color;
+#endif
+
+#ifdef HAS_SKIN
+    vary_fragcoord.xyz = frag_pos.xyz + vec3(0,0,near_clip);
+#else
+
+#ifdef IS_AVATAR_SKIN
+    vary_fragcoord.xyz = pos.xyz + vec3(0,0,near_clip);
+#else
+    pos = modelview_projection_matrix * vert;
+    vary_fragcoord.xyz = pos.xyz + vec3(0,0,near_clip);
+#endif
+
+#endif
+
+}
+

indra/newview/app_settings/shaders/class1/deferred/aoUtil.glsl

@@ -0,0 +1,118 @@
+/**
+ * @file class1/deferred/aoUtil.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform sampler2D   noiseMap;
+uniform sampler2D   depthMap;
+
+uniform float ssao_radius;
+uniform float ssao_max_radius;
+uniform float ssao_factor;
+uniform float ssao_factor_inv;
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+vec2 getScreenCoordinateAo(vec2 screenpos)
+{
+    vec2 sc = screenpos.xy * 2.0;
+    return sc - vec2(1.0, 1.0);
+}
+
+float getDepthAo(vec2 pos_screen)
+{
+    float depth = texture(depthMap, pos_screen).r;
+    return depth;
+}
+
+vec4 getPositionAo(vec2 pos_screen)
+{
+    float depth = getDepthAo(pos_screen);
+    vec2 sc = getScreenCoordinateAo(pos_screen);
+    vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
+    vec4 pos = inv_proj * ndc;
+    pos /= pos.w;
+    pos.w = 1.0;
+    return pos;
+}
+
+vec2 getKern(int i)
+{
+    vec2 kern[8];
+    // exponentially (^2) distant occlusion samples spread around origin
+    kern[0] = vec2(-1.0, 0.0) * 0.125*0.125;
+    kern[1] = vec2(1.0, 0.0) * 0.250*0.250;
+    kern[2] = vec2(0.0, 1.0) * 0.375*0.375;
+    kern[3] = vec2(0.0, -1.0) * 0.500*0.500;
+    kern[4] = vec2(0.7071, 0.7071) * 0.625*0.625;
+    kern[5] = vec2(-0.7071, -0.7071) * 0.750*0.750;
+    kern[6] = vec2(-0.7071, 0.7071) * 0.875*0.875;
+    kern[7] = vec2(0.7071, -0.7071) * 1.000*1.000;
+
+    return kern[i] / screen_res;
+}
+
+//calculate decreases in ambient lighting when crowded out (SSAO)
+float calcAmbientOcclusion(vec4 pos, vec3 norm, vec2 pos_screen)
+{
+    float ret = 1.0;
+    vec3 pos_world = pos.xyz;
+    vec2 noise_reflect = texture(noiseMap, pos_screen.xy * (screen_res / 128)).xy;
+
+    float angle_hidden = 0.0;
+    float points = 0;
+
+    float scale = min(ssao_radius / -pos_world.z, ssao_max_radius);
+
+    // it was found that keeping # of samples a constant was the fastest, probably due to compiler optimizations (unrolling?)
+    for (int i = 0; i < 8; i++)
+    {
+        vec2 samppos_screen = pos_screen + scale * reflect(getKern(i), noise_reflect);
+        vec3 samppos_world = getPositionAo(samppos_screen).xyz;
+
+        vec3 diff = pos_world - samppos_world;
+        float dist2 = dot(diff, diff);
+
+        // assume each sample corresponds to an occluding sphere with constant radius, constant x-sectional area
+        // --> solid angle shrinking by the square of distance
+        //radius is somewhat arbitrary, can approx with just some constant k * 1 / dist^2
+        //(k should vary inversely with # of samples, but this is taken care of later)
+
+        float funky_val = (dot((samppos_world - 0.05*norm - pos_world), norm) > 0.0) ? 1.0 : 0.0;
+        angle_hidden = angle_hidden + funky_val * min(1.0/dist2, ssao_factor_inv);
+
+        // 'blocked' samples (significantly closer to camera relative to pos_world) are "no data", not "no occlusion"
+        float diffz_val = (diff.z > -1.0) ? 1.0 : 0.0;
+        points = points + diffz_val;
+    }
+
+    angle_hidden = min(ssao_factor*angle_hidden/points, 1.0);
+
+    float points_val = (points > 0.0) ? 1.0 : 0.0;
+    ret = (1.0 - (points_val * angle_hidden));
+
+    ret = max(ret, 0.0);
+    return min(ret, 1.0);
+}
+

indra/newview/app_settings/shaders/class1/deferred/avatarAlphaMaskShadowF.glsl

@@ -0,0 +1,53 @@
+/**
+ * @file avatarAlphaMaskShadowF.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2005, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+out vec4 frag_color;
+
+uniform float minimum_alpha;
+uniform sampler2D diffuseMap;
+
+in float target_pos_x;
+in float pos_w;
+in vec2 vary_texcoord0;
+
+void main()
+{
+    float alpha = texture(diffuseMap, vary_texcoord0.xy).a;
+
+    if (alpha < 0.05) // treat as totally transparent
+    {
+        discard;
+    }
+
+    if (alpha < minimum_alpha)
+    {
+      if (fract(0.5*floor(target_pos_x / pos_w )) < 0.25)
+      {
+        discard;
+      }
+    }
+
+    frag_color = vec4(1,1,1,1);
+}

indra/newview/app_settings/shaders/class1/deferred/avatarAlphaShadowF.glsl

@@ -0,0 +1,55 @@
+/**
+ * @file avatarAlphaShadowF.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2005, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+out vec4 frag_color;
+
+uniform float minimum_alpha;
+
+uniform sampler2D diffuseMap;
+
+in float pos_w;
+in float target_pos_x;
+in vec2 vary_texcoord0;
+uniform vec4 color;
+
+void main()
+{
+    float alpha = texture(diffuseMap, vary_texcoord0.xy).a * color.a;
+
+    if (alpha < 0.05) // treat as totally transparent
+    {
+        discard;
+    }
+
+    if (alpha < minimum_alpha) // treat as semi-transparent
+    {
+      if (fract(0.5*floor(target_pos_x / pos_w )) < 0.25)
+      {
+        discard;
+      }
+    }
+
+    frag_color = vec4(1,1,1,1);
+}

indra/newview/app_settings/shaders/class1/deferred/avatarAlphaShadowV.glsl

@@ -0,0 +1,70 @@
+/**
+ * @file avatarAlphaShadowV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 texture_matrix0;
+uniform mat4 projection_matrix;
+uniform float shadow_target_width;
+
+mat4 getSkinnedTransform();
+void passTextureIndex();
+
+in vec3 position;
+in vec3 normal;
+in vec2 texcoord0;
+
+out float pos_w;
+out float target_pos_x;
+out vec2 vary_texcoord0;
+
+void main()
+{
+    vec4 pos;
+    vec3 norm;
+
+    vec4 pos_in = vec4(position.xyz, 1.0);
+    mat4 trans = getSkinnedTransform();
+    pos.x = dot(trans[0], pos_in);
+    pos.y = dot(trans[1], pos_in);
+    pos.z = dot(trans[2], pos_in);
+    pos.w = 1.0;
+
+    norm.x = dot(trans[0].xyz, normal);
+    norm.y = dot(trans[1].xyz, normal);
+    norm.z = dot(trans[2].xyz, normal);
+    norm = normalize(norm);
+
+    pos = projection_matrix * pos;
+
+    target_pos_x = 0.5 * (shadow_target_width - 1.0) * pos.x;
+
+    pos_w = pos.w;
+
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+
+    gl_Position = pos;
+
+    passTextureIndex();
+}
+

indra/newview/app_settings/shaders/class1/deferred/avatarEyesV.glsl

@@ -0,0 +1,51 @@
+/**
+ * @file avatarEyesV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat3 normal_matrix;
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_projection_matrix;
+uniform mat4 modelview_matrix;
+
+in vec3 position;
+in vec3 normal;
+in vec4 diffuse_color;
+in vec2 texcoord0;
+
+out vec3 vary_normal;
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
+out vec3 vary_position;
+
+void main()
+{
+    //transform vertex
+    vary_position = (modelview_matrix * vec4(position.xyz, 1.0)).xyz;
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+
+    vary_normal = normalize(normal_matrix * normal);
+
+    vertex_color = diffuse_color;
+}

indra/newview/app_settings/shaders/class1/deferred/avatarF.glsl

@@ -0,0 +1,61 @@
+/**
+ * @file avatarF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+uniform sampler2D diffuseMap;
+
+uniform float minimum_alpha;
+
+in vec3 vary_normal;
+in vec2 vary_texcoord0;
+in vec3 vary_position;
+
+void mirrorClip(vec3 pos);
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag);
+
+void main()
+{
+    mirrorClip(vary_position);
+
+    vec4 diff = texture(diffuseMap, vary_texcoord0.xy);
+
+    if (diff.a < minimum_alpha)
+    {
+        discard;
+    }
+
+    frag_data[0] = vec4(diff.rgb, 0.0);
+    frag_data[1] = vec4(0,0,0,0);
+    vec3 nvn = normalize(vary_normal);
+    frag_data[2] = encodeNormal(nvn.xyz, 0, GBUFFER_FLAG_HAS_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = vec4(0);
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl

@@ -0,0 +1,34 @@
+/**
+ * @file avatarShadowF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+void main()
+{
+    frag_color = vec4(1,1,1,1);
+}
+

indra/newview/app_settings/shaders/class1/deferred/avatarShadowV.glsl

@@ -0,0 +1,55 @@
+/**
+ * @file avatarShadowV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 projection_matrix;
+
+mat4 getSkinnedTransform();
+
+in vec3 position;
+in vec3 normal;
+in vec2 texcoord0;
+
+void main()
+{
+    vec4 pos;
+    vec3 norm;
+
+    vec4 pos_in = vec4(position.xyz, 1.0);
+    mat4 trans = getSkinnedTransform();
+    pos.x = dot(trans[0], pos_in);
+    pos.y = dot(trans[1], pos_in);
+    pos.z = dot(trans[2], pos_in);
+    pos.w = 1.0;
+
+    norm.x = dot(trans[0].xyz, normal);
+    norm.y = dot(trans[1].xyz, normal);
+    norm.z = dot(trans[2].xyz, normal);
+    norm = normalize(norm);
+
+    pos = projection_matrix * pos;
+    gl_Position = pos;
+}
+
+

indra/newview/app_settings/shaders/class1/deferred/avatarV.glsl

@@ -0,0 +1,65 @@
+/**
+ * @file avatarV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 projection_matrix;
+
+in vec3 position;
+in vec3 normal;
+in vec2 texcoord0;
+
+mat4 getSkinnedTransform();
+
+in vec4 weight;
+
+out vec3 vary_normal;
+out vec2 vary_texcoord0;
+out vec3 vary_position;
+
+void main()
+{
+    vary_texcoord0 = texcoord0;
+
+    vec4 pos;
+    vec3 norm;
+
+    vec4 pos_in = vec4(position.xyz, 1.0);
+    mat4 trans = getSkinnedTransform();
+    pos.x = dot(trans[0], pos_in);
+    pos.y = dot(trans[1], pos_in);
+    pos.z = dot(trans[2], pos_in);
+    pos.w = 1.0;
+
+    norm.x = dot(trans[0].xyz, normal);
+    norm.y = dot(trans[1].xyz, normal);
+    norm.z = dot(trans[2].xyz, normal);
+    norm = normalize(norm);
+
+    vary_normal = norm;
+
+    vary_position = pos.xyz;
+    gl_Position = projection_matrix * pos;
+}
+
+

indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl

@@ -0,0 +1,119 @@
+/**
+ * @file blurLightF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+uniform sampler2D lightMap;
+
+uniform float dist_factor;
+uniform float blur_size;
+uniform vec2 delta;
+uniform vec2 screen_res;
+uniform vec3 kern[4];
+uniform float kern_scale;
+
+in vec2 vary_fragcoord;
+
+vec4 getPosition(vec2 pos_screen);
+vec4 getNorm(vec2 pos_screen);
+
+void main()
+{
+    vec2 tc = vary_fragcoord.xy;
+    vec4 norm = getNorm(tc);
+    vec3 pos = getPosition(tc).xyz;
+    vec4 ccol = texture(lightMap, tc).rgba;
+
+    vec2 dlt = kern_scale * delta / (1.0+norm.xy*norm.xy);
+    dlt /= max(-pos.z*dist_factor, 1.0);
+
+    vec2 defined_weight = kern[0].xy; // special case the first (centre) sample's weight in the blur; we have to sample it anyway so we get it for 'free'
+    vec4 col = defined_weight.xyxx * ccol;
+
+    // relax tolerance according to distance to avoid speckling artifacts, as angles and distances are a lot more abrupt within a small screen area at larger distances
+    float pointplanedist_tolerance_pow2 = pos.z*pos.z*0.00005;
+
+    // perturb sampling origin slightly in screen-space to hide edge-ghosting artifacts where smoothing radius is quite large
+    tc *= screen_res;
+    float tc_mod = 0.5*(tc.x + tc.y);
+    tc_mod -= floor(tc_mod);
+    tc_mod *= 2.0;
+    tc += ( (tc_mod - 0.5) * kern[1].z * dlt * 0.5 );
+
+    // TODO: move this to kern instead of building kernel per pixel
+    vec3 k[7];
+    k[0] = kern[0];
+    k[2] = kern[1];
+    k[4] = kern[2];
+    k[6] = kern[3];
+
+    k[1] = (k[0]+k[2])*0.5f;
+    k[3] = (k[2]+k[4])*0.5f;
+    k[5] = (k[4]+k[6])*0.5f;
+
+    for (int i = 1; i < 7; i++)
+    {
+        vec2 samptc = tc + k[i].z*dlt*2.0;
+        samptc /= screen_res;
+        vec3 samppos = getPosition(samptc).xyz;
+
+        float d = dot(norm.xyz, samppos.xyz-pos.xyz);// dist from plane
+
+        if (d*d <= pointplanedist_tolerance_pow2)
+        {
+            col += texture(lightMap, samptc)*k[i].xyxx;
+            defined_weight += k[i].xy;
+        }
+    }
+
+    for (int i = 1; i < 7; i++)
+    {
+        vec2 samptc = tc - k[i].z*dlt*2.0;
+        samptc /= screen_res;
+        vec3 samppos = getPosition(samptc).xyz;
+
+        float d = dot(norm.xyz, samppos.xyz-pos.xyz);// dist from plane
+
+        if (d*d <= pointplanedist_tolerance_pow2)
+        {
+            col += texture(lightMap, samptc)*k[i].xyxx;
+            defined_weight += k[i].xy;
+        }
+    }
+
+    col /= defined_weight.xyxx;
+    //col.y *= col.y;
+
+    frag_color = max(col, vec4(0));
+
+#ifdef IS_AMD_CARD
+    // If it's AMD make sure the GLSL compiler sees the arrays referenced once by static index. Otherwise it seems to optimise the storage awawy which leads to unfun crashes and artifacts.
+    vec3 dummy1 = kern[0];
+    vec3 dummy2 = kern[3];
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/blurLightV.glsl

@@ -0,0 +1,37 @@
+/**
+ * @file blurLightF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+in vec3 position;
+
+out vec2 vary_fragcoord;
+uniform vec2 screen_res;
+
+void main()
+{
+    //transform vertex
+    vec4 pos = vec4(position.xyz, 1.0);
+    gl_Position = pos;
+    vary_fragcoord = (pos.xy*0.5+0.5);
+}

indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl

@@ -0,0 +1,72 @@
+/**
+ * @file bumpF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+uniform float minimum_alpha;
+uniform sampler2D diffuseMap;
+uniform sampler2D bumpMap;
+
+in vec3 vary_mat0;
+in vec3 vary_mat1;
+in vec3 vary_mat2;
+
+in vec4 vertex_color;
+in vec2 vary_texcoord0;
+in vec3 vary_position;
+
+void mirrorClip(vec3 pos);
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag);
+
+void main()
+{
+    mirrorClip(vary_position);
+
+    vec4 col = texture(diffuseMap, vary_texcoord0.xy);
+
+    if(col.a < minimum_alpha)
+    {
+        discard;
+    }
+    col *= vertex_color;
+
+    vec3 norm = texture(bumpMap, vary_texcoord0.xy).rgb * 2.0 - 1.0;
+
+    vec3 tnorm = vec3(dot(norm,vary_mat0),
+            dot(norm,vary_mat1),
+            dot(norm,vary_mat2));
+
+    frag_data[0] = vec4(col.rgb, 0.0);
+    frag_data[1] = vertex_color.aaaa; // spec
+    //frag_data[1] = vec4(vec3(vertex_color.a), vertex_color.a+(1.0-vertex_color.a)*vertex_color.a); // spec - from former class3 - maybe better, but not so well tested
+    vec3 nvn = normalize(tnorm);
+    frag_data[2] = encodeNormal(nvn, vertex_color.a, GBUFFER_FLAG_HAS_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = vec4(0, 0, 0, 0);
+#endif
+}

indra/newview/app_settings/shaders/class1/deferred/bumpV.glsl

@@ -0,0 +1,76 @@
+/**
+ * @file bumpV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 modelview_matrix;
+uniform mat3 normal_matrix;
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec3 normal;
+in vec2 texcoord0;
+in vec4 tangent;
+
+out vec3 vary_mat0;
+out vec3 vary_mat1;
+out vec3 vary_mat2;
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
+out vec3 vary_position;
+
+#ifdef HAS_SKIN
+mat4 getObjectSkinnedTransform();
+uniform mat4 projection_matrix;
+#endif
+
+void main()
+{
+    //transform vertex
+#ifdef HAS_SKIN
+    mat4 mat = getObjectSkinnedTransform();
+    mat = modelview_matrix * mat;
+    vec3 pos = (mat*vec4(position.xyz, 1.0)).xyz;
+    vary_position = pos;
+    gl_Position = projection_matrix*vec4(pos, 1.0);
+
+    vec3 n = normalize((mat * vec4(normal.xyz+position.xyz, 1.0)).xyz-pos.xyz);
+    vec3 t = normalize((mat * vec4(tangent.xyz+position.xyz, 1.0)).xyz-pos.xyz);
+#else
+    vary_position = (modelview_matrix*vec4(position.xyz, 1.0)).xyz;
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+    vec3 n = normalize(normal_matrix * normal);
+    vec3 t = normalize(normal_matrix * tangent.xyz);
+#endif
+
+    vec3 b = cross(n, t) * tangent.w;
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+
+    vary_mat0 = vec3(t.x, b.x, n.x);
+    vary_mat1 = vec3(t.y, b.y, n.y);
+    vary_mat2 = vec3(t.z, b.z, n.z);
+
+    vertex_color = diffuse_color;
+}

indra/newview/app_settings/shaders/class1/deferred/cloudsF.glsl

@@ -0,0 +1,128 @@
+/**
+ * @file class1\deferred\cloudsF.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2005, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+/////////////////////////////////////////////////////////////////////////
+// The fragment shader for the sky
+/////////////////////////////////////////////////////////////////////////
+
+in vec3 vary_CloudColorSun;
+in vec3 vary_CloudColorAmbient;
+in float vary_CloudDensity;
+
+uniform sampler2D cloud_noise_texture;
+uniform sampler2D cloud_noise_texture_next;
+uniform float blend_factor;
+uniform vec3 cloud_pos_density1;
+uniform vec3 cloud_pos_density2;
+uniform float cloud_scale;
+uniform float cloud_variance;
+
+in vec2 vary_texcoord0;
+in vec2 vary_texcoord1;
+in vec2 vary_texcoord2;
+in vec2 vary_texcoord3;
+in float altitude_blend_factor;
+
+vec4 cloudNoise(vec2 uv)
+{
+   vec4 a = texture(cloud_noise_texture, uv);
+   vec4 b = texture(cloud_noise_texture_next, uv);
+   vec4 cloud_noise_sample = mix(a, b, blend_factor);
+   return cloud_noise_sample;
+}
+
+void main()
+{
+    // Set variables
+    vec2 uv1 = vary_texcoord0.xy;
+    vec2 uv2 = vary_texcoord1.xy;
+
+    vec3 cloudColorSun = vary_CloudColorSun;
+    vec3 cloudColorAmbient = vary_CloudColorAmbient;
+    float cloudDensity = vary_CloudDensity;
+    vec2 uv3 = vary_texcoord2.xy;
+    vec2 uv4 = vary_texcoord3.xy;
+
+    if (cloud_scale < 0.001)
+    {
+        discard;
+    }
+
+    vec2 disturbance  = vec2(cloudNoise(uv1 / 8.0f).x, cloudNoise((uv3 + uv1) / 16.0f).x) * cloud_variance * (1.0f - cloud_scale * 0.25f);
+    vec2 disturbance2 = vec2(cloudNoise((uv1 + uv3) / 4.0f).x, cloudNoise((uv4 + uv2) / 8.0f).x) * cloud_variance * (1.0f - cloud_scale * 0.25f);
+
+    // Offset texture coords
+    uv1 += cloud_pos_density1.xy + (disturbance * 0.2);    //large texture, visible density
+    uv2 += cloud_pos_density1.xy;   //large texture, self shadow
+    uv3 += cloud_pos_density2.xy;   //small texture, visible density
+    uv4 += cloud_pos_density2.xy;   //small texture, self shadow
+
+    float density_variance = min(1.0, (disturbance.x* 2.0 + disturbance.y* 2.0 + disturbance2.x + disturbance2.y) * 4.0);
+
+    cloudDensity *= 1.0 - (density_variance * density_variance);
+
+    // Compute alpha1, the main cloud opacity
+
+    float alpha1 = (cloudNoise(uv1).x - 0.5) + (cloudNoise(uv3).x - 0.5) * cloud_pos_density2.z;
+    alpha1 = min(max(alpha1 + cloudDensity, 0.) * 10 * cloud_pos_density1.z, 1.);
+
+    // And smooth
+    alpha1 = 1. - alpha1 * alpha1;
+    alpha1 = 1. - alpha1 * alpha1;
+
+    alpha1 *= altitude_blend_factor;
+    alpha1 = clamp(alpha1, 0.0, 1.0);
+
+    // Compute alpha2, for self shadowing effect
+    // (1 - alpha2) will later be used as percentage of incoming sunlight
+    float alpha2 = (cloudNoise(uv2).x - 0.5);
+    alpha2 = min(max(alpha2 + cloudDensity, 0.) * 2.5 * cloud_pos_density1.z, 1.);
+
+    // And smooth
+    alpha2 = 1. - alpha2;
+    alpha2 = 1. - alpha2 * alpha2;
+
+    // Combine
+    vec3 color;
+    color = (cloudColorSun*(1.-alpha2) + cloudColorAmbient);
+    color.rgb = clamp(color.rgb, vec3(0), vec3(1));
+    color.rgb *= 2.0;
+
+    /// Gamma correct for WL (soft clip effect).
+
+    frag_data[1] = vec4(0.0,0.0,0.0,0.0);
+    frag_data[2] = vec4(0,0,0,GBUFFER_FLAG_SKIP_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[0] = vec4(0);
+    frag_data[3] = vec4(color.rgb, alpha1);
+#else
+    frag_data[0] = vec4(color.rgb, alpha1);
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl

@@ -0,0 +1,193 @@
+/**
+ * @file WLCloudsV.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2005, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+in vec2 texcoord0;
+
+//////////////////////////////////////////////////////////////////////////
+// The vertex shader for creating the atmospheric sky
+///////////////////////////////////////////////////////////////////////////////
+
+// Output parameters
+out vec3 vary_CloudColorSun;
+out vec3 vary_CloudColorAmbient;
+out float vary_CloudDensity;
+
+out vec2 vary_texcoord0;
+out vec2 vary_texcoord1;
+out vec2 vary_texcoord2;
+out vec2 vary_texcoord3;
+out float altitude_blend_factor;
+
+// Inputs
+uniform vec3 camPosLocal;
+
+uniform vec3 lightnorm;
+uniform vec3 sunlight_color;
+uniform vec3 moonlight_color;
+uniform int sun_up_factor;
+uniform vec3 ambient_color;
+uniform vec3 blue_horizon;
+uniform vec3 blue_density;
+uniform float haze_horizon;
+uniform float haze_density;
+
+uniform float cloud_shadow;
+uniform float density_multiplier;
+uniform float max_y;
+
+uniform vec3 glow;
+uniform float sun_moon_glow_factor;
+
+uniform vec3 cloud_color;
+
+uniform float cloud_scale;
+
+// NOTE: Keep these in sync!
+//       indra\newview\app_settings\shaders\class1\deferred\skyV.glsl
+//       indra\newview\app_settings\shaders\class1\deferred\cloudsV.glsl
+//       indra\newview\app-settings\shaders\class2\windlight\cloudsV.glsl
+//       indra\newview\lllegacyatmospherics.cpp
+//       indra\newview\llsettingsvo.cpp
+void main()
+{
+    // World / view / projection
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+
+    // Texture coords
+    // SL-13084 EEP added support for custom cloud textures -- flip them horizontally to match the preview of Clouds > Cloud Scroll
+    vary_texcoord0 = vec2(-texcoord0.x, texcoord0.y);  // See: LLSettingsVOSky::applySpecial
+
+    vary_texcoord0.xy -= 0.5;
+    vary_texcoord0.xy /= cloud_scale;
+    vary_texcoord0.xy += 0.5;
+
+    vary_texcoord1 = vary_texcoord0;
+    vary_texcoord1.x += lightnorm.x * 0.0125;
+    vary_texcoord1.y += lightnorm.z * 0.0125;
+
+    vary_texcoord2 = vary_texcoord0 * 16.;
+    vary_texcoord3 = vary_texcoord1 * 16.;
+
+    // Get relative position
+    vec3 rel_pos = position.xyz - camPosLocal.xyz + vec3(0, 50, 0);
+
+    altitude_blend_factor = clamp((rel_pos.y + 512.0) / max_y, 0.0, 1.0);
+
+    // Set altitude
+    if (rel_pos.y > 0)
+    {
+        rel_pos *= (max_y / rel_pos.y);
+    }
+    if (rel_pos.y < 0)
+    {
+        altitude_blend_factor = 0; // SL-11589 Fix clouds drooping below horizon
+        rel_pos *= (-32000. / rel_pos.y);
+    }
+
+    // Can normalize then
+    vec3  rel_pos_norm = normalize(rel_pos);
+    float rel_pos_len  = length(rel_pos);
+
+    // Initialize temp variables
+    vec3 sunlight = sunlight_color;
+    vec3 light_atten;
+
+    // Sunlight attenuation effect (hue and brightness) due to atmosphere
+    // this is used later for sunlight modulation at various altitudes
+    light_atten = (blue_density + vec3(haze_density * 0.25)) * (density_multiplier * max_y);
+
+    // Calculate relative weights
+    vec3 combined_haze = abs(blue_density) + vec3(abs(haze_density));
+    vec3 blue_weight   = blue_density / combined_haze;
+    vec3 haze_weight   = haze_density / combined_haze;
+
+    // Compute sunlight from rel_pos & lightnorm (for long rays like sky)
+    float off_axis = 1.0 / max(1e-6, max(0., rel_pos_norm.y) + lightnorm.y);
+    sunlight *= exp(-light_atten * off_axis);
+
+    // Distance
+    float density_dist = rel_pos_len * density_multiplier;
+
+    // Transparency (-> combined_haze)
+    // ATI Bugfix -- can't store combined_haze*density_dist in a variable because the ati
+    // compiler gets confused.
+    combined_haze = exp(-combined_haze * density_dist);
+
+    // Compute haze glow
+    float haze_glow = 1.0 - dot(rel_pos_norm, lightnorm.xyz);
+    // haze_glow is 0 at the sun and increases away from sun
+    haze_glow = max(haze_glow, .001);
+        // Set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot)
+    haze_glow *= glow.x;
+        // Higher glow.x gives dimmer glow (because next step is 1 / "angle")
+    haze_glow = pow(haze_glow, glow.z);
+        // glow.z should be negative, so we're doing a sort of (1 / "angle") function
+
+    haze_glow *= sun_moon_glow_factor;
+
+    // Add "minimum anti-solar illumination"
+    // For sun, add to glow.  For moon, remove glow entirely. SL-13768
+    haze_glow = (sun_moon_glow_factor < 1.0) ? 0.0 : (haze_glow + 0.25);
+
+    // Increase ambient when there are more clouds
+    vec3 tmpAmbient = ambient_color;
+    tmpAmbient += (1. - tmpAmbient) * cloud_shadow * 0.5;
+
+    // Dim sunlight by cloud shadow percentage
+    sunlight *= (1. - cloud_shadow);
+
+    // Haze color below cloud
+    vec3 additiveColorBelowCloud =
+        (blue_horizon * blue_weight * (sunlight + tmpAmbient) + (haze_horizon * haze_weight) * (sunlight * haze_glow + tmpAmbient));
+
+    // CLOUDS
+    sunlight = sunlight_color;
+    off_axis = 1.0 / max(1e-6, lightnorm.y * 2.);
+    sunlight *= exp(-light_atten * off_axis);
+
+    // Cloud color out
+    vary_CloudColorSun     = (sunlight * haze_glow) * cloud_color;
+    vary_CloudColorAmbient = tmpAmbient * cloud_color;
+
+    // Attenuate cloud color by atmosphere
+    combined_haze = sqrt(combined_haze);  // less atmos opacity (more transparency) below clouds
+    vary_CloudColorSun *= combined_haze;
+    vary_CloudColorAmbient *= combined_haze;
+    vec3 oHazeColorBelowCloud = additiveColorBelowCloud * (1. - combined_haze);
+
+    // Make a nice cloud density based on the cloud_shadow value that was passed in.
+    vary_CloudDensity = 2. * (cloud_shadow - 0.25);
+
+    // Combine these to minimize register use
+    vary_CloudColorAmbient += oHazeColorBelowCloud;
+
+    // needs this to compile on mac
+    //vary_AtmosAttenuation = vec3(0.0,0.0,0.0);
+
+    // END CLOUDS
+}

indra/newview/app_settings/shaders/class1/deferred/cofF.glsl

@@ -0,0 +1,79 @@
+/**
+ * @file cofF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+uniform sampler2D diffuseRect;
+uniform sampler2D depthMap;
+
+uniform float depth_cutoff;
+uniform float norm_cutoff;
+uniform float focal_distance;
+uniform float blur_constant;
+uniform float tan_pixel_angle;
+uniform float magnification;
+uniform float max_cof;
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+in vec2 vary_fragcoord;
+
+float calc_cof(float depth)
+{
+    float sc = (depth-focal_distance)/-depth*blur_constant;
+
+    sc /= magnification;
+
+    // tan_pixel_angle = pixel_length/-depth;
+    float pixel_length =  tan_pixel_angle*-focal_distance;
+
+    sc = sc/pixel_length;
+    sc *= 1.414;
+
+    return sc;
+}
+
+void main()
+{
+    vec2 tc = vary_fragcoord.xy;
+
+    float z = texture(depthMap, tc).r;
+    z = z*2.0-1.0;
+    vec4 ndc = vec4(0.0, 0.0, z, 1.0);
+    vec4 p = inv_proj*ndc;
+    float depth = p.z/p.w;
+
+    vec4 diff = texture(diffuseRect, vary_fragcoord.xy);
+
+    float sc = calc_cof(depth);
+    sc = min(sc, max_cof);
+    sc = max(sc, -max_cof);
+
+    frag_color.rgb = diff.rgb;
+    frag_color.a = sc/max_cof*0.5+0.5;
+}

indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl

@@ -0,0 +1,648 @@
+/**
+ * @file class1/deferred/deferredUtil.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+
+/*  Parts of this file are taken from Sascha Willem's Vulkan GLTF refernce implementation
+MIT License
+
+Copyright (c) 2018 Sascha Willems
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+uniform sampler2D normalMap;
+uniform sampler2D depthMap;
+uniform sampler2D projectionMap; // rgba
+uniform sampler2D brdfLut;
+
+// projected lighted params
+uniform mat4 proj_mat; //screen space to light space projector
+uniform vec3 proj_n; // projector normal
+uniform vec3 proj_p; //plane projection is emitting from (in screen space)
+uniform float proj_focus; // distance from plane to begin blurring
+uniform float proj_lod  ; // (number of mips in proj map)
+uniform float proj_range; // range between near clip and far clip plane of projection
+uniform float proj_ambiance;
+
+uniform int classic_mode;
+
+// light params
+uniform vec3 color; // light_color
+uniform float size; // light_size
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+const float M_PI = 3.14159265;
+const float ONE_OVER_PI = 0.3183098861;
+
+vec3 srgb_to_linear(vec3 cs);
+vec3 linear_to_srgb(vec3 cs);
+vec3 atmosFragLightingLinear(vec3 light, vec3 additive, vec3 atten);
+
+vec4 decodeNormal(vec4 norm);
+
+vec3 clampHDRRange(vec3 color)
+{
+    // Why do this?
+    // There are situations where the color range will go to something insane - potentially producing infs and NaNs even.
+    // This is a safety measure to prevent that.
+    // As to the specific number there - allegedly some HDR displays expect values to be in the 0-11.2 range. Citation needed.
+    // -Geenz 2025-03-05
+    color = mix(color, vec3(1), isinf(color));
+    color = mix(color, vec3(0.0), isnan(color));
+    return clamp(color, vec3(0.0), vec3(11.2));
+}
+
+float calcLegacyDistanceAttenuation(float distance, float falloff)
+{
+    float dist_atten = 1.0 - clamp((distance + falloff)/(1.0 + falloff), 0.0, 1.0);
+    dist_atten *= dist_atten;
+
+    // Tweak falloff slightly to match pre-EEP attenuation
+    // NOTE: this magic number also shows up in a great many other places, search for dist_atten *= to audit
+    dist_atten *= 2.0;
+    return dist_atten;
+}
+
+// In:
+//   lv  unnormalized surface to light vector
+//   n   normal of the surface
+//   pos unnormalized camera to surface vector
+// Out:
+//   l   normalized surace to light vector
+//   nl  diffuse angle
+//   nh  specular angle
+void calcHalfVectors(vec3 lv, vec3 n, vec3 v,
+    out vec3 h, out vec3 l, out float nh, out float nl, out float nv, out float vh, out float lightDist)
+{
+    l  = normalize(lv);
+    h  = normalize(l + v);
+
+    // lower bound to avoid divide by zero
+    float eps = 0.000001;
+    nh = clamp(dot(n, h), eps, 1.0);
+    nl = clamp(dot(n, l), eps, 1.0);
+    nv = clamp(dot(n, v), eps, 1.0);
+    vh = clamp(dot(v, h), eps, 1.0);
+
+    lightDist = length(lv);
+}
+
+// In:
+//   light_center
+//   pos
+// Out:
+//   dist
+//   l_dist
+//   lv
+//   proj_tc  Projector Textue Coordinates
+bool clipProjectedLightVars(vec3 light_center, vec3 pos, out float dist, out float l_dist, out vec3 lv, out vec4 proj_tc )
+{
+    lv = light_center - pos.xyz;
+    dist = length(lv);
+    bool clipped = (dist >= size);
+    if ( !clipped )
+    {
+        dist /= size;
+
+        l_dist = -dot(lv, proj_n);
+        vec4 projected_point = (proj_mat * vec4(pos.xyz, 1.0));
+        clipped = (projected_point.z < 0.0);
+        projected_point.xyz /= projected_point.w;
+        proj_tc = projected_point;
+    }
+
+    return clipped;
+}
+
+vec2 getScreenCoordinate(vec2 screenpos)
+{
+    vec2 sc = screenpos.xy * 2.0;
+    return sc - vec2(1.0, 1.0);
+}
+
+vec4 getNorm(vec2 screenpos)
+{
+    vec4 norm = decodeNormal(texture(normalMap, screenpos.xy));
+    return norm;
+}
+
+vec4 getNormRaw(vec2 screenpos)
+{
+    vec4 norm = texture(normalMap, screenpos.xy);
+    return norm;
+}
+
+// get linear depth value given a depth buffer sample d and znear and zfar values
+float linearDepth(float d, float znear, float zfar)
+{
+    d = d * 2.0 - 1.0;
+    return znear * 2.0 * zfar / (zfar + znear - d * (zfar - znear));
+}
+
+float linearDepth01(float d, float znear, float zfar)
+{
+    return linearDepth(d, znear, zfar) / zfar;
+}
+
+float getDepth(vec2 pos_screen)
+{
+    float depth = texture(depthMap, pos_screen).r;
+    return depth;
+}
+
+vec4 getTexture2DLodAmbient(vec2 tc, float lod)
+{
+#ifndef FXAA_GLSL_120
+    vec4 ret = textureLod(projectionMap, tc, lod);
+#else
+    vec4 ret = texture(projectionMap, tc);
+#endif
+    ret.rgb = srgb_to_linear(ret.rgb);
+
+    vec2 dist = tc-vec2(0.5);
+    float d = dot(dist,dist);
+    ret *= min(clamp((0.25-d)/0.25, 0.0, 1.0), 1.0);
+
+    return ret;
+}
+
+vec4 getTexture2DLodDiffuse(vec2 tc, float lod)
+{
+#ifndef FXAA_GLSL_120
+    vec4 ret = textureLod(projectionMap, tc, lod);
+#else
+    vec4 ret = texture(projectionMap, tc);
+#endif
+    ret.rgb = srgb_to_linear(ret.rgb);
+
+    vec2 dist = vec2(0.5) - abs(tc-vec2(0.5));
+    float det = min(lod/(proj_lod*0.5), 1.0);
+    float d = min(dist.x, dist.y);
+    float edge = 0.25*det;
+    ret *= clamp(d/edge, 0.0, 1.0);
+
+    return ret;
+}
+
+// lit     This is set by the caller: if (nl > 0.0) { lit = attenuation * nl * noise; }
+// Uses:
+//   color   Projected spotlight color
+vec3 getProjectedLightAmbiance(float amb_da, float attenuation, float lit, float nl, float noise, vec2 projected_uv)
+{
+    vec4 amb_plcol = getTexture2DLodAmbient(projected_uv, proj_lod);
+    vec3 amb_rgb   = amb_plcol.rgb * amb_plcol.a;
+
+    amb_da += proj_ambiance;
+    amb_da += (nl*nl*0.5+0.5) * proj_ambiance;
+    amb_da *= attenuation * noise;
+    amb_da = min(amb_da, 1.0-lit);
+
+    return (amb_da * color.rgb * amb_rgb);
+}
+
+// Returns projected light in Linear
+// Uses global spotlight color:
+//  color
+// NOTE: projected.a will be pre-multiplied with projected.rgb
+vec3 getProjectedLightDiffuseColor(float light_distance, vec2 projected_uv)
+{
+    float diff = clamp((light_distance - proj_focus)/proj_range, 0.0, 1.0);
+    float lod = diff * proj_lod;
+    vec4 plcol = getTexture2DLodDiffuse(projected_uv.xy, lod);
+
+    return color.rgb * plcol.rgb * plcol.a;
+}
+
+vec4 texture2DLodSpecular(vec2 tc, float lod)
+{
+#ifndef FXAA_GLSL_120
+    vec4 ret = textureLod(projectionMap, tc, lod);
+#else
+    vec4 ret = texture(projectionMap, tc);
+#endif
+    ret.rgb = srgb_to_linear(ret.rgb);
+
+    vec2 dist = vec2(0.5) - abs(tc-vec2(0.5));
+    float det = min(lod/(proj_lod*0.5), 1.0);
+    float d = min(dist.x, dist.y);
+    d *= min(1, d * (proj_lod - lod)); // BUG? extra factor compared to diffuse causes N repeats
+    float edge = 0.25*det;
+    ret *= clamp(d/edge, 0.0, 1.0);
+
+    return ret;
+}
+
+// See: clipProjectedLightVars()
+vec3 getProjectedLightSpecularColor(vec3 pos, vec3 n )
+{
+    vec3 slit = vec3(0);
+    vec3 ref = reflect(normalize(pos), n);
+
+    //project from point pos in direction ref to plane proj_p, proj_n
+    vec3 pdelta = proj_p-pos;
+    float l_dist = length(pdelta);
+    float ds = dot(ref, proj_n);
+    if (ds < 0.0)
+    {
+        vec3 pfinal = pos + ref * dot(pdelta, proj_n)/ds;
+        vec4 stc = (proj_mat * vec4(pfinal.xyz, 1.0));
+        if (stc.z > 0.0)
+        {
+            stc /= stc.w;
+            slit = getProjectedLightDiffuseColor( l_dist, stc.xy ); // NOTE: Using diffuse due to texture2DLodSpecular() has extra: d *= min(1, d * (proj_lod - lod));
+        }
+    }
+    return slit; // specular light
+}
+
+vec3 getProjectedLightSpecularColor(float light_distance, vec2 projected_uv)
+{
+    float diff = clamp((light_distance - proj_focus)/proj_range, 0.0, 1.0);
+    float lod = diff * proj_lod;
+    vec4 plcol = getTexture2DLodDiffuse(projected_uv.xy, lod); // NOTE: Using diffuse due to texture2DLodSpecular() has extra: d *= min(1, d * (proj_lod - lod));
+
+    return color.rgb * plcol.rgb * plcol.a;
+}
+
+vec4 getPosition(vec2 pos_screen)
+{
+    float depth = getDepth(pos_screen);
+    vec2 sc = getScreenCoordinate(pos_screen);
+    vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
+    vec4 pos = inv_proj * ndc;
+    pos /= pos.w;
+    pos.w = 1.0;
+    return pos;
+}
+
+// get position given a normalized device coordinate
+vec3 getPositionWithNDC(vec3 ndc)
+{
+    vec4 pos = inv_proj * vec4(ndc, 1.0);
+    return pos.xyz / pos.w;
+}
+
+vec4 getPositionWithDepth(vec2 pos_screen, float depth)
+{
+    vec2 sc = getScreenCoordinate(pos_screen);
+    vec3 ndc = vec3(sc.x, sc.y, 2.0*depth-1.0);
+    return vec4(getPositionWithNDC(ndc), 1.0);
+}
+
+vec2 getScreenCoord(vec4 clip)
+{
+    vec4 ndc = clip;
+         ndc.xyz /= clip.w;
+    vec2 screen = vec2( ndc.xy * 0.5 );
+         screen += 0.5;
+    return screen;
+}
+
+vec2 getScreenXY(vec4 clip)
+{
+    vec4 ndc = clip;
+         ndc.xyz /= clip.w;
+    vec2 screen = vec2( ndc.xy * 0.5 );
+         screen += 0.5;
+         screen *= screen_res;
+    return screen;
+}
+
+// Color utils
+
+vec3 colorize_dot(float x)
+{
+    if (x > 0.0) return vec3( 0, x, 0 );
+    if (x < 0.0) return vec3(-x, 0, 0 );
+                 return vec3( 0, 0, 1 );
+}
+
+vec3 hue_to_rgb(float hue)
+{
+    if (hue > 1.0) return vec3(0.5);
+    vec3 rgb = abs(hue * 6. - vec3(3, 2, 4)) * vec3(1, -1, -1) + vec3(-1, 2, 2);
+    return clamp(rgb, 0.0, 1.0);
+}
+
+// PBR Utils
+
+vec2 BRDF(float NoV, float roughness)
+{
+    return texture(brdfLut, vec2(NoV, roughness)).rg;
+}
+
+// set colorDiffuse and colorSpec to the results of GLTF PBR style IBL
+void pbrIbl(vec3 diffuseColor,
+            vec3 specularColor,
+            vec3 radiance, // radiance map sample
+            vec3 irradiance, // irradiance map sample
+            float ao,       // ambient occlusion factor
+            float nv,       // normal dot view vector
+            float perceptualRough,
+            out vec3 diffuseOut,
+            out vec3 specularOut)
+{
+    // retrieve a scale and bias to F0. See [1], Figure 3
+    vec2 brdf = BRDF(clamp(nv, 0, 1), 1.0-perceptualRough);
+    vec3 diffuseLight = irradiance;
+    vec3 specularLight = radiance;
+
+    vec3 diffuse = diffuseLight * diffuseColor;
+    vec3 specular = specularLight * (specularColor * brdf.x + brdf.y);
+
+    diffuseOut = diffuse * ao;
+    specularOut = specular * ao;
+}
+
+
+// Encapsulate the various inputs used by the various functions in the shading equation
+// We store values in this struct to simplify the integration of alternative implementations
+// of the shading terms, outlined in the Readme.MD Appendix.
+struct PBRInfo
+{
+    float NdotL;                  // cos angle between normal and light direction
+    float NdotV;                  // cos angle between normal and view direction
+    float NdotH;                  // cos angle between normal and half vector
+    float LdotH;                  // cos angle between light direction and half vector
+    float VdotH;                  // cos angle between view direction and half vector
+    float perceptualRoughness;    // roughness value, as authored by the model creator (input to shader)
+    float metalness;              // metallic value at the surface
+    vec3 reflectance0;            // full reflectance color (normal incidence angle)
+    vec3 reflectance90;           // reflectance color at grazing angle
+    float alphaRoughness;         // roughness mapped to a more linear change in the roughness (proposed by [2])
+    vec3 diffuseColor;            // color contribution from diffuse lighting
+    vec3 specularColor;           // color contribution from specular lighting
+};
+
+// Basic Lambertian diffuse
+// Implementation from Lambert's Photometria https://archive.org/details/lambertsphotome00lambgoog
+// See also [1], Equation 1
+vec3 diffuse(PBRInfo pbrInputs)
+{
+    return pbrInputs.diffuseColor / M_PI;
+}
+
+// The following equation models the Fresnel reflectance term of the spec equation (aka F())
+// Implementation of fresnel from [4], Equation 15
+vec3 specularReflection(PBRInfo pbrInputs)
+{
+    return pbrInputs.reflectance0 + (pbrInputs.reflectance90 - pbrInputs.reflectance0) * pow(clamp(1.0 - pbrInputs.VdotH, 0.0, 1.0), 5.0);
+}
+
+// This calculates the specular geometric attenuation (aka G()),
+// where rougher material will reflect less light back to the viewer.
+// This implementation is based on [1] Equation 4, and we adopt their modifications to
+// alphaRoughness as input as originally proposed in [2].
+float geometricOcclusion(PBRInfo pbrInputs)
+{
+    float NdotL = pbrInputs.NdotL;
+    float NdotV = pbrInputs.NdotV;
+    float r = pbrInputs.alphaRoughness;
+
+    float attenuationL = 2.0 * NdotL / (NdotL + sqrt(r * r + (1.0 - r * r) * (NdotL * NdotL)));
+    float attenuationV = 2.0 * NdotV / (NdotV + sqrt(r * r + (1.0 - r * r) * (NdotV * NdotV)));
+    return attenuationL * attenuationV;
+}
+
+// The following equation(s) model the distribution of microfacet normals across the area being drawn (aka D())
+// Implementation from "Average Irregularity Representation of a Roughened Surface for Ray Reflection" by T. S. Trowbridge, and K. P. Reitz
+// Follows the distribution function recommended in the SIGGRAPH 2013 course notes from EPIC Games [1], Equation 3.
+float microfacetDistribution(PBRInfo pbrInputs)
+{
+    float roughnessSq = pbrInputs.alphaRoughness * pbrInputs.alphaRoughness;
+    float f = (pbrInputs.NdotH * roughnessSq - pbrInputs.NdotH) * pbrInputs.NdotH + 1.0;
+    return roughnessSq / (M_PI * f * f);
+}
+
+void pbrPunctual(vec3 diffuseColor, vec3 specularColor,
+                    float perceptualRoughness,
+                    float metallic,
+                    vec3 n, // normal
+                    vec3 v, // surface point to camera
+                    vec3 l,
+                    out float nl,
+                    out vec3 diff,
+                    out vec3 spec) //surface point to light
+{
+    // make sure specular highlights from punctual lights don't fall off of polished surfaces
+    perceptualRoughness = max(perceptualRoughness, 8.0/255.0);
+
+    float alphaRoughness = perceptualRoughness * perceptualRoughness;
+
+    // Compute reflectance.
+    float reflectance = max(max(specularColor.r, specularColor.g), specularColor.b);
+
+    // For typical incident reflectance range (between 4% to 100%) set the grazing reflectance to 100% for typical fresnel effect.
+    // For very low reflectance range on highly diffuse objects (below 4%), incrementally reduce grazing reflecance to 0%.
+    float reflectance90 = clamp(reflectance * 25.0, 0.0, 1.0);
+    vec3 specularEnvironmentR0 = specularColor.rgb;
+    vec3 specularEnvironmentR90 = vec3(1.0, 1.0, 1.0) * reflectance90;
+
+    vec3 h = normalize(l+v);                        // Half vector between both l and v
+    vec3 reflection = -normalize(reflect(v, n));
+    reflection.y *= -1.0f;
+
+    float NdotL = clamp(dot(n, l), 0.001, 1.0);
+    float NdotV = clamp(abs(dot(n, v)), 0.001, 1.0);
+    float NdotH = clamp(dot(n, h), 0.0, 1.0);
+    float LdotH = clamp(dot(l, h), 0.0, 1.0);
+    float VdotH = clamp(dot(v, h), 0.0, 1.0);
+
+    PBRInfo pbrInputs = PBRInfo(
+        NdotL,
+        NdotV,
+        NdotH,
+        LdotH,
+        VdotH,
+        perceptualRoughness,
+        metallic,
+        specularEnvironmentR0,
+        specularEnvironmentR90,
+        alphaRoughness,
+        diffuseColor,
+        specularColor
+    );
+
+    // Calculate the shading terms for the microfacet specular shading model
+    vec3 F = specularReflection(pbrInputs);
+    float G = geometricOcclusion(pbrInputs);
+    float D = microfacetDistribution(pbrInputs);
+
+    // Calculation of analytical lighting contribution
+    vec3 diffuseContrib = (1.0 - F) * diffuse(pbrInputs);
+    vec3 specContrib = F * G * D / (4.0 * NdotL * NdotV);
+
+    nl = NdotL;
+
+    diff = diffuseContrib;
+    spec = specContrib;
+}
+
+vec3 pbrCalcPointLightOrSpotLight(vec3 diffuseColor, vec3 specularColor,
+                    float perceptualRoughness,
+                    float metallic,
+                    vec3 n, // normal
+                    vec3 p, // pixel position
+                    vec3 v, // view vector (negative normalized pixel position)
+                    vec3 lp, // light position
+                    vec3 ld, // light direction (for spotlights)
+                    vec3 lightColor,
+                    float lightSize, float falloff, float is_pointlight, float ambiance)
+{
+    vec3 color = vec3(0,0,0);
+
+    vec3 lv = lp.xyz - p;
+
+    float lightDist = length(lv);
+
+    float dist = lightDist / lightSize;
+    if (dist <= 1.0)
+    {
+        lv /= lightDist;
+
+        float dist_atten = calcLegacyDistanceAttenuation(dist, falloff);
+
+        // spotlight coefficient.
+        float spot = max(dot(-ld, lv), is_pointlight);
+        // spot*spot => GL_SPOT_EXPONENT=2
+        float spot_atten = spot*spot;
+
+        vec3 intensity = spot_atten * dist_atten * lightColor * 3.0; //magic number to balance with legacy materials
+
+        float nl = 0;
+        vec3 diffPunc = vec3(0);
+        vec3 specPunc = vec3(0);
+
+        pbrPunctual(diffuseColor, specularColor, perceptualRoughness, metallic, n.xyz, v, lv, nl, diffPunc, specPunc);
+        color = intensity * clamp(nl * (diffPunc + specPunc), vec3(0), vec3(10));
+    }
+    float final_scale = 1.0;
+    if (classic_mode > 0)
+        final_scale = 0.9;
+    return color * final_scale;
+}
+
+void calcDiffuseSpecular(vec3 baseColor, float metallic, inout vec3 diffuseColor, inout vec3 specularColor)
+{
+    vec3 f0 = vec3(0.04);
+    diffuseColor = baseColor*(vec3(1.0)-f0);
+    diffuseColor *= 1.0 - metallic;
+    specularColor = mix(f0, baseColor, metallic);
+}
+
+vec3 pbrBaseLight(vec3 diffuseColor, vec3 specularColor, float metallic, vec3 v, vec3 norm, float perceptualRoughness, vec3 light_dir, vec3 sunlit, float scol, vec3 radiance, vec3 irradiance, vec3 colorEmissive, float ao, vec3 additive, vec3 atten)
+{
+    vec3 color = vec3(0);
+
+    float NdotV = clamp(abs(dot(norm, v)), 0.001, 1.0);
+    vec3 iblDiff = vec3(0);
+    vec3 iblSpec = vec3(0);
+    pbrIbl(diffuseColor, specularColor, radiance, irradiance, ao, NdotV, perceptualRoughness, iblDiff, iblSpec);
+
+    color += iblDiff;
+
+    // For classic mode, we use a special version of pbrPunctual that basically gives us a deconstructed form of the lighting.
+    float nl = 0;
+    vec3 diffPunc = vec3(0);
+    vec3 specPunc = vec3(0);
+    pbrPunctual(diffuseColor, specularColor, perceptualRoughness, metallic, norm, v, normalize(light_dir), nl, diffPunc, specPunc);
+
+    // Depending on the sky, we combine these differently.
+    if (classic_mode > 0)
+    {
+        irradiance.rgb = srgb_to_linear(irradiance * 0.9); // BINGO
+
+        // Reconstruct the diffuse lighting that we do for blinn-phong materials here.
+        // A special note about why we do some really janky stuff for classic mode.
+        // Since adding classic mode, we've moved the lambertian diffuse multiply out from pbrPunctual and instead handle it in the different light type calcs.
+        // This will never be 100% correct, but at the very least we can make it look mostly correct with legacy skies and classic mode.
+
+        float da = pow(nl, 1.2);
+
+        vec3 sun_contrib = vec3(min(da, scol));
+
+        // Multiply by PI to account for lambertian diffuse colors.  Otherwise things will be too dark when lit by the sun on legacy skies.
+        sun_contrib = srgb_to_linear(linear_to_srgb(sun_contrib) * sunlit * 0.7) * M_PI;
+
+        // Manually recombine everything here.  We have to separate the shading to ensure that lighting is able to more closely match blinn-phong.
+        vec3 finalAmbient = irradiance.rgb * diffuseColor.rgb; // BINGO
+        vec3 finalSun = clamp(sun_contrib * ((diffPunc.rgb + specPunc.rgb) * scol), vec3(0), vec3(10)); // QUESTIONABLE BINGO?
+        color.rgb = srgb_to_linear(linear_to_srgb(finalAmbient) + (linear_to_srgb(finalSun) * 1.1));
+        //color.rgb = sun_contrib * diffuseColor.rgb;
+    }
+    else
+    {
+        color += clamp(nl * (diffPunc + specPunc), vec3(0), vec3(10)) * sunlit * 3.0 * scol;
+    }
+
+    color.rgb += iblSpec.rgb;
+
+    color += colorEmissive;
+
+    return color;
+}
+
+uniform vec4 waterPlane;
+uniform float waterSign;
+
+// discard if given position in eye space is on the wrong side of the waterPlane according to waterSign
+void waterClip(vec3 pos)
+{
+    // TODO: make this less branchy
+    if (waterSign > 0)
+    {
+        if ((dot(pos.xyz, waterPlane.xyz) + waterPlane.w) < 0.0)
+        {
+            discard;
+        }
+    }
+    else
+    {
+        if ((dot(pos.xyz, waterPlane.xyz) + waterPlane.w) > 0.0)
+        {
+            discard;
+        }
+    }
+
+}
+

indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl

@@ -0,0 +1,64 @@
+/**
+ * @file diffuseAlphaMaskF.glsl
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+uniform float minimum_alpha;
+
+uniform sampler2D diffuseMap;
+
+in vec3 vary_position;
+
+in vec3 vary_normal;
+in vec4 vertex_color;
+in vec2 vary_texcoord0;
+
+void mirrorClip(vec3 pos);
+
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag);
+
+void main()
+{
+    mirrorClip(vary_position);
+
+    vec4 col = texture(diffuseMap, vary_texcoord0.xy) * vertex_color;
+
+    if (col.a < minimum_alpha)
+    {
+        discard;
+    }
+
+    frag_data[0] = vec4(col.rgb, 0.0);
+    frag_data[1] = vec4(0,0,0,0); // spec
+    vec3 nvn = normalize(vary_normal);
+    frag_data[2] = encodeNormal(nvn.xyz, 0, GBUFFER_FLAG_HAS_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = vec4(0);
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl

@@ -0,0 +1,60 @@
+/**
+ * @file diffuseAlphaMaskIndexedF.glsl
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+in vec3 vary_normal;
+in vec3 vary_position;
+
+uniform float minimum_alpha;
+
+in vec4 vertex_color;
+in vec2 vary_texcoord0;
+
+void mirrorClip(vec3 pos);
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag);
+
+void main()
+{
+    mirrorClip(vary_position);
+
+    vec4 col = diffuseLookup(vary_texcoord0.xy) * vertex_color;
+
+    if (col.a < minimum_alpha)
+    {
+        discard;
+    }
+
+    frag_data[0] = vec4(col.rgb, 0.0);
+    frag_data[1] = vec4(0,0,0,0);
+    vec3 nvn = normalize(vary_normal);
+    frag_data[2] = encodeNormal(nvn.xyz, 0, GBUFFER_FLAG_HAS_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = vec4(0);
+#endif
+}

indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskNoColorF.glsl

@@ -0,0 +1,56 @@
+/**
+ * @file diffuseAlphaMaskNoColorF.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2005, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+uniform float minimum_alpha;
+
+uniform sampler2D diffuseMap;
+
+in vec3 vary_normal;
+in vec2 vary_texcoord0;
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag);
+
+void main()
+{
+    vec4 col = texture(diffuseMap, vary_texcoord0.xy);
+
+    if (col.a < minimum_alpha)
+    {
+        discard;
+    }
+
+    frag_data[0] = vec4(col.rgb, 0.0);
+    frag_data[1] = vec4(0,0,0,0); // spec
+    vec3 nvn = normalize(vary_normal);
+    frag_data[2] = encodeNormal(nvn.xyz, 0, GBUFFER_FLAG_HAS_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = vec4(0);
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl

@@ -0,0 +1,53 @@
+/**
+ * @file diffuseF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+uniform sampler2D diffuseMap;
+
+in vec3 vary_normal;
+in vec4 vertex_color;
+in vec2 vary_texcoord0;
+in vec3 vary_position;
+
+void mirrorClip(vec3 pos);
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag);
+
+void main()
+{
+    mirrorClip(vary_position);
+    vec3 col = vertex_color.rgb * texture(diffuseMap, vary_texcoord0.xy).rgb;
+    frag_data[0] = vec4(col, 0.0);
+    frag_data[1] = vertex_color.aaaa; // spec
+    vec3 nvn = normalize(vary_normal);
+    frag_data[2] = encodeNormal(nvn.xyz, vertex_color.a, GBUFFER_FLAG_HAS_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = vec4(0, 0, 0, 0);
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/diffuseIndexedF.glsl

@@ -0,0 +1,56 @@
+/**
+ * @file diffuseIndexedF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+in vec3 vary_normal;
+in vec4 vertex_color;
+in vec2 vary_texcoord0;
+in vec3 vary_position;
+
+void mirrorClip(vec3 pos);
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag);
+
+vec3 linear_to_srgb(vec3 c);
+
+void main()
+{
+    mirrorClip(vary_position);
+    vec3 col = vertex_color.rgb * diffuseLookup(vary_texcoord0.xy).rgb;
+
+    vec3 spec;
+    spec.rgb = vec3(vertex_color.a);
+
+    frag_data[0] = vec4(col, 0.0);
+    frag_data[1] = vec4(spec, vertex_color.a); // spec
+    vec3 nvn = normalize(vary_normal);
+    frag_data[2] = encodeNormal(nvn.xyz, vertex_color.a, GBUFFER_FLAG_HAS_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = vec4(0, 0, 0, 0);
+#endif
+}

indra/newview/app_settings/shaders/class1/deferred/diffuseNoColorV.glsl

@@ -0,0 +1,45 @@
+/**
+ * @file diffuseNoColorV.glsl
+ *
+  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat3 normal_matrix;
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+in vec3 normal;
+in vec2 texcoord0;
+
+out vec3 vary_normal;
+
+out vec2 vary_texcoord0;
+
+void main()
+{
+    //transform vertex
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+
+    vary_normal = normalize(normal_matrix * normal);
+}

indra/newview/app_settings/shaders/class1/deferred/diffuseV.glsl

@@ -0,0 +1,71 @@
+/**
+ * @file diffuseV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat3 normal_matrix;
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec3 normal;
+in vec2 texcoord0;
+
+out vec3 vary_normal;
+
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
+out vec3 vary_position;
+
+void passTextureIndex();
+
+uniform mat4 modelview_matrix;
+
+#ifdef HAS_SKIN
+mat4 getObjectSkinnedTransform();
+uniform mat4 projection_matrix;
+
+#endif
+
+void main()
+{
+#ifdef HAS_SKIN
+    mat4 mat = getObjectSkinnedTransform();
+    mat = modelview_matrix * mat;
+    vec4 pos = mat * vec4(position.xyz, 1.0);
+    vary_position = pos.xyz;
+    gl_Position = projection_matrix * pos;
+    vary_normal = normalize((mat*vec4(normal.xyz+position.xyz,1.0)).xyz-pos.xyz);
+#else
+    vary_position = (modelview_matrix * vec4(position.xyz, 1.0)).xyz;
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+    vary_normal = normalize(normal_matrix * normal);
+#endif
+
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+
+    passTextureIndex();
+
+    vertex_color = diffuse_color;
+}

indra/newview/app_settings/shaders/class1/deferred/dofCombineF.glsl

@@ -0,0 +1,75 @@
+/**
+ * @file dofCombineF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+uniform sampler2D diffuseRect;
+uniform sampler2D lightMap;
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+uniform float max_cof;
+uniform float res_scale;
+uniform float dof_width;
+uniform float dof_height;
+
+in vec2 vary_fragcoord;
+
+vec4 dofSample(sampler2D tex, vec2 tc)
+{
+    tc.x = min(tc.x, dof_width);
+    tc.y = min(tc.y, dof_height);
+
+    return texture(tex, tc);
+}
+
+void main()
+{
+    vec2 tc = vary_fragcoord.xy;
+
+    vec4 dof = dofSample(diffuseRect, vary_fragcoord.xy*res_scale);
+
+    vec4 diff = texture(lightMap, vary_fragcoord.xy);
+
+    float a = min(abs(diff.a*2.0-1.0) * max_cof*res_scale*res_scale, 1.0);
+
+    if (a > 0.25 && a < 0.75)
+    { //help out the transition a bit
+        float sc = a/res_scale;
+
+        vec4 col;
+        col = texture(lightMap, vary_fragcoord.xy+vec2(sc,sc)/screen_res);
+        col += texture(lightMap, vary_fragcoord.xy+vec2(-sc,sc)/screen_res);
+        col += texture(lightMap, vary_fragcoord.xy+vec2(sc,-sc)/screen_res);
+        col += texture(lightMap, vary_fragcoord.xy+vec2(-sc,-sc)/screen_res);
+
+        diff = mix(diff, col*0.25, a);
+    }
+
+    frag_color = mix(diff, dof, a);
+}

indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl

@@ -0,0 +1,39 @@
+/**
+ * @file emissiveF.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2005, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+in vec4 vertex_color;
+in vec2 vary_texcoord0;
+
+void main()
+{
+    // NOTE: when this shader is used, only alpha is being written to
+    float a = diffuseLookup(vary_texcoord0.xy).a*vertex_color.a;
+    frag_color = max(vec4(0, 0, 0, a), vec4(0));
+}
+

indra/newview/app_settings/shaders/class1/deferred/emissiveV.glsl

@@ -0,0 +1,71 @@
+/**
+ * @file emissiveV.glsl
+ *
+  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_matrix;
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+void passTextureIndex();
+in vec4 emissive;
+in vec2 texcoord0;
+
+void calcAtmospherics(vec3 inPositionEye);
+
+vec3 atmosAmbient();
+vec3 atmosAffectDirectionalLight(float lightIntensity);
+
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
+
+#ifdef HAS_SKIN
+mat4 getObjectSkinnedTransform();
+uniform mat4 projection_matrix;
+#endif
+
+void main()
+{
+    //transform vertex
+    passTextureIndex();
+
+#ifdef HAS_SKIN
+    mat4 mat = getObjectSkinnedTransform();
+    mat = modelview_matrix * mat;
+
+    vec4 pos = mat * vec4(position.xyz, 1.0);
+    gl_Position = projection_matrix * pos;
+#else
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+    vec4 pos = (modelview_matrix * vec4(position.xyz, 1.0));
+#endif
+
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+
+    calcAtmospherics(pos.xyz);
+
+    vertex_color = emissive;
+
+
+}

indra/newview/app_settings/shaders/class1/deferred/exposureF.glsl

@@ -0,0 +1,66 @@
+/**
+ * @file exposureF.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+uniform sampler2D emissiveRect;
+#ifdef USE_LAST_EXPOSURE
+uniform sampler2D exposureMap;
+#endif
+
+uniform float dt;
+uniform vec2 noiseVec;
+
+uniform vec4 dynamic_exposure_params;
+uniform vec4 dynamic_exposure_params2;
+
+float lum(vec3 col)
+{
+    vec3 l = vec3(0.2126, 0.7152, 0.0722);
+    return dot(l, col);
+}
+
+void main()
+{
+    vec2 tc = vec2(0.5,0.5);
+
+    float L = textureLod(emissiveRect, tc, 8).r;
+    float max_L = dynamic_exposure_params.x;
+    L = clamp(L, 0.0, max_L);
+    L /= max_L;
+    L = pow(L, 2.0);
+    float s = mix(dynamic_exposure_params.z, dynamic_exposure_params.y, L);
+#ifdef USE_LAST_EXPOSURE
+    float prev = texture(exposureMap, vec2(0.5,0.5)).r;
+
+    float speed = -log(dynamic_exposure_params.w) / dynamic_exposure_params2.w;
+    s = mix(prev, s, 1 - exp(-speed * dt));
+#endif
+
+    frag_color = max(vec4(s, s, s, dt), vec4(0.0));
+}
+

indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl

@@ -0,0 +1,100 @@
+/**
+ * @file deferred/fullbrightF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+#if !defined(HAS_DIFFUSE_LOOKUP)
+uniform sampler2D diffuseMap;
+#endif
+
+in vec3 vary_position;
+in vec4 vertex_color;
+in vec2 vary_texcoord0;
+
+vec3 srgb_to_linear(vec3 cs);
+vec3 linear_to_srgb(vec3 cl);
+
+#ifdef HAS_ALPHA_MASK
+uniform float minimum_alpha;
+#endif
+
+#ifdef IS_ALPHA
+uniform vec4 waterPlane;
+void waterClip(vec3 pos);
+void calcAtmosphericVars(vec3 inPositionEye, vec3 light_dir, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive,
+                         out vec3 atten);
+vec4 applySkyAndWaterFog(vec3 pos, vec3 additive, vec3 atten, vec4 color);
+#endif
+
+void mirrorClip(vec3 pos);
+
+void main()
+{
+    mirrorClip(vary_position);
+#ifdef IS_ALPHA
+    waterClip(vary_position.xyz);
+#endif
+
+#ifdef HAS_DIFFUSE_LOOKUP
+    vec4 color = diffuseLookup(vary_texcoord0.xy);
+#else
+    vec4 color = texture(diffuseMap, vary_texcoord0.xy);
+#endif
+
+    float final_alpha = color.a * vertex_color.a;
+
+#ifdef HAS_ALPHA_MASK
+    if (color.a < minimum_alpha)
+    {
+        discard;
+    }
+#endif
+
+    color.rgb *= vertex_color.rgb;
+
+    vec3 pos = vary_position;
+
+    color.a = final_alpha;
+#ifndef IS_HUD
+    color.rgb = srgb_to_linear(color.rgb);
+#ifdef IS_ALPHA
+
+    vec3 sunlit;
+    vec3 amblit;
+    vec3 additive;
+    vec3 atten;
+    calcAtmosphericVars(pos.xyz, vec3(0), 1.0, sunlit, amblit, additive, atten);
+
+    color.rgb = applySkyAndWaterFog(pos, additive, atten, color).rgb;
+
+#endif
+
+#endif
+
+    frag_color = max(color, vec4(0));
+}
+

indra/newview/app_settings/shaders/class1/deferred/fullbrightShinyV.glsl

@@ -0,0 +1,81 @@
+/**
+ * @file fullbrightShinyV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat3 normal_matrix;
+uniform mat4 texture_matrix0;
+uniform mat4 texture_matrix1;
+uniform mat4 modelview_matrix;
+uniform mat4 modelview_projection_matrix;
+
+
+void calcAtmospherics(vec3 inPositionEye);
+
+uniform vec4 origin;
+
+
+
+in vec3 position;
+void passTextureIndex();
+in vec3 normal;
+in vec4 diffuse_color;
+in vec2 texcoord0;
+
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
+out vec3 vary_texcoord1;
+out vec3 vary_position;
+
+#ifdef HAS_SKIN
+mat4 getObjectSkinnedTransform();
+uniform mat4 projection_matrix;
+#endif
+
+void main()
+{
+    //transform vertex
+    vec4 vert = vec4(position.xyz,1.0);
+    passTextureIndex();
+
+#ifdef HAS_SKIN
+    mat4 mat = getObjectSkinnedTransform();
+    mat = modelview_matrix * mat;
+    vec4 pos = mat * vert;
+    gl_Position = projection_matrix * pos;
+    vec3 norm = normalize((mat*vec4(normal.xyz+position.xyz,1.0)).xyz-pos.xyz);
+#else
+    vec4 pos = (modelview_matrix * vert);
+    gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
+    vec3 norm = normalize(normal_matrix * normal);
+#endif
+
+    vary_position = pos.xyz;
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+
+    vary_texcoord1 = norm;
+
+    calcAtmospherics(pos.xyz);
+
+    vertex_color = diffuse_color;
+}

indra/newview/app_settings/shaders/class1/deferred/fullbrightV.glsl

@@ -0,0 +1,74 @@
+/**
+ * @file fullbrightV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_matrix;
+uniform mat4 modelview_projection_matrix;
+
+
+in vec3 position;
+void passTextureIndex();
+in vec4 diffuse_color;
+in vec2 texcoord0;
+
+void calcAtmospherics(vec3 inPositionEye);
+
+vec3 atmosAmbient();
+vec3 atmosAffectDirectionalLight(float lightIntensity);
+
+out vec3 vary_position;
+
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
+
+#ifdef HAS_SKIN
+mat4 getObjectSkinnedTransform();
+uniform mat4 projection_matrix;
+#endif
+
+void main()
+{
+    //transform vertex
+    vec4 vert = vec4(position.xyz, 1.0);
+    passTextureIndex();
+
+#ifdef HAS_SKIN
+    mat4 mat = getObjectSkinnedTransform();
+    mat = modelview_matrix * mat;
+    vec4 pos = mat * vert;
+    gl_Position = projection_matrix * pos;
+#else
+    vec4 pos = (modelview_matrix * vert);
+    gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
+#endif
+
+    vary_position = pos.xyz;
+
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+
+    calcAtmospherics(pos.xyz);
+
+    vertex_color = diffuse_color;
+}

indra/newview/app_settings/shaders/class1/deferred/gbufferUtil.glsl

@@ -0,0 +1,59 @@
+/**
+ * @file class1/deferred/gbufferUtil.glsl
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform sampler2D diffuseRect;
+uniform sampler2D specularRect;
+
+#if defined(HAS_EMISSIVE)
+uniform sampler2D emissiveRect;
+#endif
+
+vec4 getNormRaw(vec2 screenpos);
+vec4 decodeNormal(vec4 norm);
+
+GBufferInfo getGBuffer(vec2 screenpos)
+{
+    GBufferInfo ret;
+    vec4 diffInfo = vec4(0);
+    vec4 specInfo = vec4(0);
+    vec4 emissInfo = vec4(0);
+
+    diffInfo = texture(diffuseRect, screenpos.xy);
+    specInfo = texture(specularRect, screenpos.xy);
+    vec4 normInfo = getNormRaw(screenpos);
+
+#if defined(HAS_EMISSIVE)
+    emissInfo = texture(emissiveRect, screenpos.xy);
+#endif
+
+    ret.albedo = diffInfo;
+    ret.normal = decodeNormal(normInfo).xyz;
+    ret.specular = specInfo;
+    ret.envIntensity = normInfo.b;
+    ret.gbufferFlag = normInfo.w;
+    ret.emissive = emissInfo;
+
+    return ret;
+}

indra/newview/app_settings/shaders/class1/deferred/genbrdflutF.glsl

@@ -0,0 +1,141 @@
+/**
+ * @file class1/deferred/genbrdflut.glsl
+ *
+ * $LicenseInfo:firstyear=2022&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2022, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*  Taken from Sascha Willem's Vulkan GLTF refernce implementation
+MIT License
+
+Copyright (c) 2018 Sascha Willems
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+/*[EXTRA_CODE_HERE]*/
+
+in vec2 vary_uv;
+
+out vec4 outColor;
+
+#define NUM_SAMPLES 1024u
+
+const float PI = 3.1415926536;
+
+// Based omn http://byteblacksmith.com/improvements-to-the-canonical-one-liner-glsl-rand-for-opengl-es-2-0/
+float random(vec2 co)
+{
+    float a = 12.9898;
+    float b = 78.233;
+    float c = 43758.5453;
+    float dt= dot(co.xy ,vec2(a,b));
+    float sn= mod(dt,3.14);
+    return fract(sin(sn) * c);
+}
+
+vec2 hammersley2d(uint i, uint N)
+{
+    // Radical inverse based on http://holger.dammertz.org/stuff/notes_HammersleyOnHemisphere.html
+    uint bits = (i << 16u) | (i >> 16u);
+    bits = ((bits & 0x55555555u) << 1u) | ((bits & 0xAAAAAAAAu) >> 1u);
+    bits = ((bits & 0x33333333u) << 2u) | ((bits & 0xCCCCCCCCu) >> 2u);
+    bits = ((bits & 0x0F0F0F0Fu) << 4u) | ((bits & 0xF0F0F0F0u) >> 4u);
+    bits = ((bits & 0x00FF00FFu) << 8u) | ((bits & 0xFF00FF00u) >> 8u);
+    float rdi = float(bits) * 2.3283064365386963e-10;
+    return vec2(float(i) /float(N), rdi);
+}
+
+// Based on http://blog.selfshadow.com/publications/s2013-shading-course/karis/s2013_pbs_epic_slides.pdf
+vec3 importanceSample_GGX(vec2 Xi, float roughness, vec3 normal)
+{
+    // Maps a 2D point to a hemisphere with spread based on roughness
+    float alpha = roughness * roughness;
+    float phi = 2.0 * PI * Xi.x + random(normal.xz) * 0.1;
+    float cosTheta = sqrt((1.0 - Xi.y) / (1.0 + (alpha*alpha - 1.0) * Xi.y));
+    float sinTheta = sqrt(1.0 - cosTheta * cosTheta);
+    vec3 H = vec3(sinTheta * cos(phi), sinTheta * sin(phi), cosTheta);
+
+    // Tangent space
+    vec3 up = abs(normal.z) < 0.999 ? vec3(0.0, 0.0, 1.0) : vec3(1.0, 0.0, 0.0);
+    vec3 tangentX = normalize(cross(up, normal));
+    vec3 tangentY = normalize(cross(normal, tangentX));
+
+    // Convert to world Space
+    return normalize(tangentX * H.x + tangentY * H.y + normal * H.z);
+}
+
+// Geometric Shadowing function
+float G_SchlicksmithGGX(float dotNL, float dotNV, float roughness)
+{
+    float k = (roughness * roughness) / 2.0;
+    float GL = dotNL / (dotNL * (1.0 - k) + k);
+    float GV = dotNV / (dotNV * (1.0 - k) + k);
+    return GL * GV;
+}
+
+vec2 BRDF(float NoV, float roughness)
+{
+    // Normal always points along z-axis for the 2D lookup
+    const vec3 N = vec3(0.0, 0.0, 1.0);
+    vec3 V = vec3(sqrt(1.0 - NoV*NoV), 0.0, NoV);
+
+    vec2 LUT = vec2(0.0);
+    for(uint i = 0u; i < NUM_SAMPLES; i++) {
+        vec2 Xi = hammersley2d(i, NUM_SAMPLES);
+        vec3 H = importanceSample_GGX(Xi, roughness, N);
+        vec3 L = 2.0 * dot(V, H) * H - V;
+
+        float dotNL = max(dot(N, L), 0.0);
+        float dotNV = max(dot(N, V), 0.0);
+        float dotVH = max(dot(V, H), 0.0);
+        float dotNH = max(dot(H, N), 0.0);
+
+        if (dotNL > 0.0) {
+            float G = G_SchlicksmithGGX(dotNL, dotNV, roughness);
+            float G_Vis = (G * dotVH) / (dotNH * dotNV);
+            float Fc = pow(1.0 - dotVH, 5.0);
+            LUT += vec2((1.0 - Fc) * G_Vis, Fc * G_Vis);
+        }
+    }
+    return LUT / float(NUM_SAMPLES);
+}
+
+void main()
+{
+    outColor = vec4(BRDF(vary_uv.s, 1.0-vary_uv.t), 0.0, 1.0);
+}

indra/newview/app_settings/shaders/class1/deferred/genbrdflutV.glsl

@@ -0,0 +1,39 @@
+/**
+ * @file class3\deferred\genbrdflutV.glsl
+ *
+ * $LicenseInfo:firstyear=2022&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2022, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+
+out vec2 vary_uv;
+
+void main()
+{
+    //transform vertex
+    vec4 pos = modelview_projection_matrix * vec4(position.xyz, 1.0);
+    vary_uv = position.xy*0.5+0.5;
+
+    gl_Position = vec4(position.xyz, 1.0);
+}

indra/newview/app_settings/shaders/class1/deferred/globalF.glsl

@@ -0,0 +1,61 @@
+/**
+ * @file class1/deferred/globalF.glsl
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+
+ // Global helper functions included in every fragment shader
+ // DO NOT declare sampler uniforms here as OS X doesn't compile
+ // them out
+
+uniform float mirror_flag;
+uniform vec4 clipPlane;
+uniform float clipSign;
+
+void mirrorClip(vec3 pos)
+{
+    if (mirror_flag > 0)
+    {
+        if ((dot(pos.xyz, clipPlane.xyz) + clipPlane.w) < 0.0)
+        {
+                discard;
+        }
+    }
+}
+
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag)
+{
+    float f = sqrt(8 * n.z + 8);
+    return vec4(n.xy / f + 0.5, env, gbuffer_flag);
+}
+
+vec4 decodeNormal(vec4 norm)
+{
+    vec2 fenc = norm.xy*4-2;
+    float f = dot(fenc,fenc);
+    float g = sqrt(1-f/4);
+    vec4 n;
+    n.xy = fenc*g;
+    n.z = 1-f/2;
+    return n;
+}

indra/newview/app_settings/shaders/class1/deferred/highlightF.glsl

@@ -0,0 +1,42 @@
+/**
+ * @file highlightF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+out vec4 frag_data[4];
+
+uniform vec4 color;
+uniform sampler2D diffuseMap;
+
+in vec2 vary_texcoord0;
+
+void main()
+{
+    frag_data[0] = color*texture(diffuseMap, vary_texcoord0.xy);
+    frag_data[1] = vec4(0.0);
+    frag_data[2] = vec4(0.0, 1.0, 0.0, GBUFFER_FLAG_SKIP_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = vec4(0);
+#endif
+}

indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl

@@ -0,0 +1,62 @@
+/**
+ * @file impostorF.glsl
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+uniform float minimum_alpha;
+
+
+uniform sampler2D diffuseMap;
+uniform sampler2D normalMap;
+uniform sampler2D specularMap;
+
+in vec2 vary_texcoord0;
+
+vec3 linear_to_srgb(vec3 c);
+
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag);
+
+void main()
+{
+    vec4 col = texture(diffuseMap, vary_texcoord0.xy);
+
+    if (col.a < minimum_alpha)
+    {
+        discard;
+    }
+
+    vec4 norm = texture(normalMap,   vary_texcoord0.xy);
+    vec4 spec = texture(specularMap, vary_texcoord0.xy);
+
+    frag_data[0] = vec4(col.rgb, 0.0);
+    frag_data[1] = spec;
+    frag_data[2] = vec4(norm.xyz, GBUFFER_FLAG_HAS_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = vec4(0);
+#endif
+}

indra/newview/app_settings/shaders/class1/deferred/impostorV.glsl

@@ -0,0 +1,39 @@
+/**
+ * @file impostorV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+in vec2 texcoord0;
+
+out vec2 vary_texcoord0;
+
+void main()
+{
+    //transform vertex
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+}

indra/newview/app_settings/shaders/class1/deferred/luminanceF.glsl

@@ -0,0 +1,68 @@
+/**
+ * @file luminanceF.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+
+/*[EXTRA_CODE_HERE]*/
+
+// take a luminance sample of diffuseRect and emissiveRect
+
+out vec4 frag_color;
+
+in vec2 vary_fragcoord;
+
+uniform sampler2D diffuseRect;
+uniform sampler2D emissiveRect;
+uniform sampler2D normalMap;
+uniform float diffuse_luminance_scale;
+
+float lum(vec3 col)
+{
+    vec3 l = vec3(0.2126, 0.7152, 0.0722);
+    return dot(l, col);
+}
+
+void main()
+{
+    vec2 tc = vary_fragcoord*0.6+0.2;
+    tc.y -= 0.1; // HACK - nudge exposure sample down a little bit to favor ground over sky
+    vec3 c = texture(diffuseRect, tc).rgb;
+
+    vec4  norm         = texture(normalMap, tc);
+
+    if (!GET_GBUFFER_FLAG(norm.w, GBUFFER_FLAG_HAS_HDRI) &&
+        !GET_GBUFFER_FLAG(norm.w, GBUFFER_FLAG_SKIP_ATMOS))
+    {
+        // Apply the diffuse luminance scale to objects but not the sky
+        // Prevents underexposing when looking at bright environments
+        // while still allowing for realistically bright skies.
+        c *= diffuse_luminance_scale;
+    }
+
+    c += texture(emissiveRect, tc).rgb;
+
+    float L = lum(c);
+    frag_color = vec4(max(L, 0.0));
+}
+

indra/newview/app_settings/shaders/class1/deferred/materialF.glsl

@@ -0,0 +1,52 @@
+/**
+* @file materialF.glsl
+*
+* $LicenseInfo:firstyear=2023&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2023, Linden Research, Inc.
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+/*[EXTRA_CODE_HERE]*/
+
+// debug stub
+
+#define DIFFUSE_ALPHA_MODE_BLEND    1
+
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
+out vec4 frag_color;
+#else
+out vec4 frag_data[4];
+#endif
+
+void main()
+{
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
+    frag_color = vec4(0.5, 0, 1, 0.5);
+#else // mode is not DIFFUSE_ALPHA_MODE_BLEND, encode to gbuffer
+    // deferred path               // See: C++: addDeferredAttachment(), shader: softenLightF.glsl
+    frag_data[0] = vec4(0.5, 0, 1, 0);    // gbuffer is sRGB for legacy materials
+    frag_data[1] = vec4(0); // XYZ = Specular color. W = Specular exponent.
+    frag_data[2] = vec4(0); // XY = Normal.  Z = Env. intensity. W = 1 skip atmos (mask off fog)
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = vec4(0);
+#endif
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/materialV.glsl

@@ -0,0 +1,131 @@
+/**
+ * @file materialV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#define DIFFUSE_ALPHA_MODE_IGNORE 0
+#define DIFFUSE_ALPHA_MODE_BLEND 1
+#define DIFFUSE_ALPHA_MODE_MASK 2
+#define DIFFUSE_ALPHA_MODE_EMISSIVE 3
+
+uniform mat4 modelview_matrix;
+uniform mat4 projection_matrix;
+uniform mat4 modelview_projection_matrix;
+
+#ifdef HAS_SKIN
+mat4 getObjectSkinnedTransform();
+#else
+uniform mat3 normal_matrix;
+#endif
+
+out vec3 vary_position;
+
+uniform mat4 texture_matrix0;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec3 normal;
+in vec2 texcoord0;
+
+
+#ifdef HAS_NORMAL_MAP
+in vec4 tangent;
+in vec2 texcoord1;
+
+out vec3 vary_tangent;
+flat out float vary_sign;
+out vec3 vary_normal;
+
+out vec2 vary_texcoord1;
+#else
+out vec3 vary_normal;
+#endif
+
+#ifdef HAS_SPECULAR_MAP
+in vec2 texcoord2;
+out vec2 vary_texcoord2;
+#endif
+
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
+
+void main()
+{
+#ifdef HAS_SKIN
+    mat4 mat = getObjectSkinnedTransform();
+
+    mat = modelview_matrix * mat;
+
+    vec3 pos = (mat*vec4(position.xyz,1.0)).xyz;
+
+    vary_position = pos;
+
+    gl_Position = projection_matrix*vec4(pos,1.0);
+
+#else
+    //transform vertex
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+
+#endif
+
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+
+#ifdef HAS_NORMAL_MAP
+    vary_texcoord1 = (texture_matrix0 * vec4(texcoord1,0,1)).xy;
+#endif
+
+#ifdef HAS_SPECULAR_MAP
+    vary_texcoord2 = (texture_matrix0 * vec4(texcoord2,0,1)).xy;
+#endif
+
+#ifdef HAS_SKIN
+    vec3 n = normalize((mat*vec4(normal.xyz+position.xyz,1.0)).xyz-pos.xyz);
+#ifdef HAS_NORMAL_MAP
+    vec3 t = normalize((mat*vec4(tangent.xyz+position.xyz,1.0)).xyz-pos.xyz);
+
+    vary_tangent = t;
+    vary_sign = tangent.w;
+    vary_normal = n;
+#else //HAS_NORMAL_MAP
+    vary_normal  = n;
+#endif //HAS_NORMAL_MAP
+#else //HAS_SKIN
+    vec3 n = normalize(normal_matrix * normal);
+#ifdef HAS_NORMAL_MAP
+    vec3 t = normalize(normal_matrix * tangent.xyz);
+
+    vary_tangent = t;
+    vary_sign = tangent.w;
+    vary_normal = n;
+#else //HAS_NORMAL_MAP
+    vary_normal = n;
+#endif //HAS_NORMAL_MAP
+#endif //HAS_SKIN
+
+    vertex_color = diffuse_color;
+
+#if !defined(HAS_SKIN)
+    vary_position = (modelview_matrix*vec4(position.xyz, 1.0)).xyz;
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/moonF.glsl

@@ -0,0 +1,70 @@
+/**
+ * @file class1\deferred\moonF.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2005, 2020 Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+uniform vec4 color;
+uniform vec3 moon_dir;
+uniform float moon_brightness;
+uniform sampler2D diffuseMap;
+
+in vec2 vary_texcoord0;
+
+void main()
+{
+    // Restore Pre-EEP alpha fade moon near horizon
+    float fade = 1.0;
+    if( moon_dir.z > 0 )
+        fade = clamp( moon_dir.z*moon_dir.z*4.0, 0.0, 1.0 );
+
+    vec4 c      = texture(diffuseMap, vary_texcoord0.xy);
+
+    // SL-14113 Don't write to depth; prevent moon's quad from hiding stars which should be visible
+    // Moon texture has transparent pixels <0x55,0x55,0x55,0x00>
+    if (c.a <= 2./255.) // 0.00784
+    {
+        discard;
+    }
+
+    c.rgb *= moon_brightness;
+    c.a   *= fade;
+
+    frag_data[0] = vec4(0);
+    frag_data[1] = vec4(0.0);
+    frag_data[2] = vec4(0.0, 0.0, 0.0, GBUFFER_FLAG_SKIP_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[0] = vec4(0);
+    frag_data[3] = vec4(c.rgb, c.a);
+#else
+    frag_data[0] = vec4(c.rgb, c.a);
+#endif
+
+    // Added and commented out for a ground truth.  Do not uncomment - Geenz
+    //gl_FragDepth = 0.999985f;
+}
+

indra/newview/app_settings/shaders/class1/deferred/moonV.glsl

@@ -0,0 +1,47 @@
+/**
+ * @file class1\deferred\moonV.glsl
+ *
+  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, 2020 Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_matrix;
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+in vec2 texcoord0;
+
+out vec2 vary_texcoord0;
+
+void main()
+{
+    //transform vertex
+    vec4 vert = vec4(position.xyz, 1.0);
+    vec4 pos = (modelview_projection_matrix * vert);
+
+    // smash to *almost* far clip plane -- stars are still behind
+    // SL-19283 - finagle the moon position to be between clouds and stars.
+    pos.z = pos.w*0.999991;
+    gl_Position = pos;
+
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+}

indra/newview/app_settings/shaders/class1/deferred/normgenF.glsl

@@ -0,0 +1,83 @@
+/**
+ * @file normgenF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+
+
+// generate a normal map using an approximation of the old emboss bump map "brightness/darkness" technique
+// srcMap is a source color image, output should be a normal
+
+out vec4 frag_color;
+
+uniform sampler2D srcMap;
+
+in vec2 vary_texcoord0;
+
+uniform float stepX;
+uniform float stepY;
+uniform float norm_scale;
+uniform int bump_code;
+
+#define BE_BRIGHTNESS 1
+#define BE_DARKNESS 2
+
+// get luminance or inverse luminance depending on bump_code
+float getBumpValue(vec2 texcoord)
+{
+    vec3 c = texture(srcMap, texcoord).rgb;
+
+    vec3 WEIGHT = vec3(0.2995, 0.5875, 0.1145);
+
+    float l = dot(c, WEIGHT);
+
+    if (bump_code == BE_DARKNESS)
+    {
+        l = 1.0 - l;
+    }
+
+    return l;
+}
+
+
+void main()
+{
+    float c = getBumpValue(vary_texcoord0);
+
+    float scaler = 512.0;
+
+    vec3 right = vec3(norm_scale, 0, (getBumpValue(vary_texcoord0+vec2(stepX, 0))-c)*scaler);
+    vec3 left = vec3(-norm_scale, 0, (getBumpValue(vary_texcoord0-vec2(stepX, 0))-c)*scaler);
+    vec3 up = vec3(0, -norm_scale, (getBumpValue(vary_texcoord0-vec2(0, stepY))-c)*scaler);
+    vec3 down = vec3(0, norm_scale, (getBumpValue(vary_texcoord0+vec2(0, stepY))-c)*scaler);
+
+    vec3 norm = cross(right, down) + cross(down, left) + cross(left,up) + cross(up, right);
+
+    norm = normalize(norm);
+    norm *= 0.5;
+    norm += 0.5;
+
+    frag_color = vec4(norm, c);
+}

indra/newview/app_settings/shaders/class1/deferred/normgenV.glsl

@@ -0,0 +1,36 @@
+/**
+ * @file normgenV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+in vec3 position;
+in vec2 texcoord0;
+
+out vec2 vary_fragcoord;
+out vec2 vary_texcoord0;
+
+void main()
+{
+    gl_Position = vec4(position.x*2.0-1.0, position.y*2.0-1.0, -1.0, 1.0);
+    vary_texcoord0 = texcoord0;
+}

indra/newview/app_settings/shaders/class1/deferred/pbrShadowAlphaBlendF.glsl

@@ -0,0 +1,56 @@
+/**
+ * @file pbrShadowAlphaBlendF.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+out vec4 frag_color;
+
+uniform sampler2D diffuseMap;
+
+in vec4 post_pos;
+in float target_pos_x;
+in vec4 vertex_color;
+in vec2 vary_texcoord0;
+uniform float minimum_alpha;
+
+void main()
+{
+    float alpha = texture(diffuseMap,vary_texcoord0.xy).a;
+
+    alpha *= vertex_color.a;
+
+    if (alpha < 0.05) // treat as totally transparent
+    {
+        discard;
+    }
+
+    if (alpha < 0.88) // treat as semi-transparent
+    {
+        if (fract(0.5*floor(target_pos_x / post_pos.w )) < 0.25)
+        {
+            discard;
+        }
+    }
+
+    frag_color = vec4(1,1,1,1);
+}

indra/newview/app_settings/shaders/class1/deferred/pbrShadowAlphaMaskF.glsl

@@ -0,0 +1,46 @@
+/**
+ * @file pbrShadowAlphaMaskF.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+out vec4 frag_color;
+
+uniform sampler2D diffuseMap;
+
+in vec4 post_pos;
+in float target_pos_x;
+in vec4 vertex_color;
+in vec2 vary_texcoord0;
+uniform float minimum_alpha;
+
+void main()
+{
+    float alpha = texture(diffuseMap,vary_texcoord0.xy).a * vertex_color.a;
+
+    if (alpha < minimum_alpha)
+    {
+        discard;
+    }
+
+    frag_color = vec4(1,1,1,1);
+}

indra/newview/app_settings/shaders/class1/deferred/pbrShadowAlphaMaskV.glsl

@@ -0,0 +1,75 @@
+/**
+ * @file pbrShadowAlphaMaskV.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 texture_matrix0;
+#if defined(HAS_SKIN)
+uniform mat4 modelview_matrix;
+uniform mat4 projection_matrix;
+mat4 getObjectSkinnedTransform();
+#else
+uniform mat4 modelview_projection_matrix;
+#endif
+
+uniform vec4[2] texture_base_color_transform;
+vec2 texture_transform(vec2 vertex_texcoord, vec4[2] khr_gltf_transform, mat4 sl_animation_transform);
+
+uniform float shadow_target_width;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec2 texcoord0;
+
+out vec4 post_pos;
+out float target_pos_x;
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
+
+void passTextureIndex();
+
+void main()
+{
+    //transform vertex
+#if defined(HAS_SKIN)
+    vec4 pre_pos = vec4(position.xyz, 1.0);
+    mat4 mat = getObjectSkinnedTransform();
+    mat = modelview_matrix * mat;
+    vec4 pos = mat * pre_pos;
+    pos = projection_matrix * pos;
+#else
+    vec4 pre_pos = vec4(position.xyz, 1.0);
+    vec4 pos = modelview_projection_matrix * pre_pos;
+#endif
+
+    target_pos_x = 0.5 * (shadow_target_width - 1.0) * pos.x;
+
+    post_pos = pos;
+
+    gl_Position = pos;
+
+    passTextureIndex();
+
+    vary_texcoord0 = texture_transform(texcoord0, texture_base_color_transform, texture_matrix0);
+    vertex_color = diffuse_color;
+}

indra/newview/app_settings/shaders/class1/deferred/pbralphaF.glsl

@@ -0,0 +1,33 @@
+/**
+ * @file pbralphaF.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+ // debug stub
+
+out vec4 frag_color;
+
+void main()
+{
+    frag_color = vec4(1.0, 0, 0.5, 0.5);
+}

indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl

@@ -0,0 +1,158 @@
+/**
+ * @file class1\deferred\pbralphaV.glsl
+ *
+ * $LicenseInfo:firstyear=2022&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2022, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+
+#ifndef IS_HUD
+
+// default alpha implementation
+
+#ifdef HAS_SKIN
+uniform mat4 modelview_matrix;
+uniform mat4 projection_matrix;
+mat4 getObjectSkinnedTransform();
+#else
+uniform mat3 normal_matrix;
+uniform mat4 modelview_projection_matrix;
+#endif
+uniform mat4 texture_matrix0;
+
+#if !defined(HAS_SKIN)
+uniform mat4 modelview_matrix;
+#endif
+
+out vec3 vary_position;
+
+uniform vec4[2] texture_base_color_transform;
+uniform vec4[2] texture_normal_transform;
+uniform vec4[2] texture_metallic_roughness_transform;
+uniform vec4[2] texture_emissive_transform;
+
+out vec3 vary_fragcoord;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec3 normal;
+in vec4 tangent;
+in vec2 texcoord0;
+
+out vec2 base_color_texcoord;
+out vec2 normal_texcoord;
+out vec2 metallic_roughness_texcoord;
+out vec2 emissive_texcoord;
+
+out vec4 vertex_color;
+
+out vec3 vary_tangent;
+flat out float vary_sign;
+out vec3 vary_normal;
+
+vec2 texture_transform(vec2 vertex_texcoord, vec4[2] khr_gltf_transform, mat4 sl_animation_transform);
+vec4 tangent_space_transform(vec4 vertex_tangent, vec3 vertex_normal, vec4[2] khr_gltf_transform, mat4 sl_animation_transform);
+
+
+void main()
+{
+#ifdef HAS_SKIN
+    mat4 mat = getObjectSkinnedTransform();
+    mat = modelview_matrix * mat;
+    vec3 pos = (mat*vec4(position.xyz,1.0)).xyz;
+    vary_position = pos;
+    vec4 vert = projection_matrix * vec4(pos,1.0);
+#else
+    //transform vertex
+    vec4 vert = modelview_projection_matrix * vec4(position.xyz, 1.0);
+#endif
+    gl_Position = vert;
+
+    vary_fragcoord.xyz = vert.xyz;
+
+    base_color_texcoord = texture_transform(texcoord0, texture_base_color_transform, texture_matrix0);
+    normal_texcoord = texture_transform(texcoord0, texture_normal_transform, texture_matrix0);
+    metallic_roughness_texcoord = texture_transform(texcoord0, texture_metallic_roughness_transform, texture_matrix0);
+    emissive_texcoord = texture_transform(texcoord0, texture_emissive_transform, texture_matrix0);
+
+#ifdef HAS_SKIN
+    vec3 n = (mat*vec4(normal.xyz+position.xyz,1.0)).xyz-pos.xyz;
+    vec3 t = (mat*vec4(tangent.xyz+position.xyz,1.0)).xyz-pos.xyz;
+#else //HAS_SKIN
+    vec3 n = normal_matrix * normal;
+    vec3 t = normal_matrix * tangent.xyz;
+#endif //HAS_SKIN
+
+    n = normalize(n);
+
+    vec4 transformed_tangent = tangent_space_transform(vec4(t, tangent.w), n, texture_normal_transform, texture_matrix0);
+    vary_tangent = normalize(transformed_tangent.xyz);
+    vary_sign = transformed_tangent.w;
+    vary_normal = n;
+
+    vertex_color = diffuse_color;
+
+#if !defined(HAS_SKIN)
+    vary_position = (modelview_matrix*vec4(position.xyz, 1.0)).xyz;
+#endif
+}
+
+#else
+
+// fullbright HUD alpha implementation
+
+uniform mat4 modelview_projection_matrix;
+
+uniform mat4 texture_matrix0;
+
+uniform mat4 modelview_matrix;
+
+out vec3 vary_position;
+
+uniform vec4[2] texture_base_color_transform;
+uniform vec4[2] texture_emissive_transform;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec2 texcoord0;
+
+out vec2 base_color_texcoord;
+out vec2 emissive_texcoord;
+
+out vec4 vertex_color;
+
+vec2 texture_transform(vec2 vertex_texcoord, vec4[2] khr_gltf_transform, mat4 sl_animation_transform);
+
+
+void main()
+{
+    //transform vertex
+    vec4 vert = modelview_projection_matrix * vec4(position.xyz, 1.0);
+    gl_Position = vert;
+    vary_position = vert.xyz;
+
+    base_color_texcoord = texture_transform(texcoord0, texture_base_color_transform, texture_matrix0);
+    emissive_texcoord = texture_transform(texcoord0, texture_emissive_transform, texture_matrix0);
+
+    vertex_color = diffuse_color;
+}
+
+#endif

indra/newview/app_settings/shaders/class1/deferred/pbrglowF.glsl

@@ -0,0 +1,67 @@
+/**
+ * @file pbrglowF.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+// forward fullbright implementation for HUDs
+
+uniform sampler2D diffuseMap;  //always in sRGB space
+
+uniform vec3 emissiveColor;
+uniform sampler2D emissiveMap;
+
+out vec4 frag_color;
+
+in vec3 vary_position;
+in vec4 vertex_emissive;
+
+in vec2 base_color_texcoord;
+in vec2 emissive_texcoord;
+
+uniform float minimum_alpha; // PBR alphaMode: MASK, See: mAlphaCutoff, setAlphaCutoff()
+
+vec3 linear_to_srgb(vec3 c);
+vec3 srgb_to_linear(vec3 c);
+
+void main()
+{
+    vec4 basecolor = texture(diffuseMap, base_color_texcoord.xy).rgba;
+
+    if (basecolor.a < minimum_alpha)
+    {
+        discard;
+    }
+
+    vec3 emissive = emissiveColor;
+    emissive *= srgb_to_linear(texture(emissiveMap, emissive_texcoord.xy).rgb);
+
+    float lum = max(max(emissive.r, emissive.g), emissive.b);
+    lum *= vertex_emissive.a;
+
+    // HUDs are rendered after gamma correction, output in sRGB space
+    frag_color.rgb = vec3(0);
+    frag_color.a = lum;
+}
+

indra/newview/app_settings/shaders/class1/deferred/pbrglowV.glsl

@@ -0,0 +1,72 @@
+/**
+ * @file pbgglowV.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+
+#ifdef HAS_SKIN
+uniform mat4 modelview_matrix;
+uniform mat4 projection_matrix;
+mat4 getObjectSkinnedTransform();
+#else
+uniform mat4 modelview_projection_matrix;
+#endif
+
+uniform mat4 texture_matrix0;
+
+uniform vec4[2] texture_base_color_transform;
+uniform vec4[2] texture_emissive_transform;
+
+in vec3 position;
+in vec4 emissive;
+
+in vec2 texcoord0;
+
+out vec2 base_color_texcoord;
+out vec2 emissive_texcoord;
+
+out vec4 vertex_emissive;
+
+vec2 texture_transform(vec2 vertex_texcoord, vec4[2] khr_gltf_transform, mat4 sl_animation_transform);
+
+void main()
+{
+#ifdef HAS_SKIN
+    mat4 mat = getObjectSkinnedTransform();
+
+    mat = modelview_matrix * mat;
+
+    vec3 pos = (mat*vec4(position.xyz,1.0)).xyz;
+
+    gl_Position = projection_matrix*vec4(pos,1.0);
+#else
+    //transform vertex
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+#endif
+
+    base_color_texcoord = texture_transform(texcoord0, texture_base_color_transform, texture_matrix0);
+    emissive_texcoord = texture_transform(texcoord0, texture_emissive_transform, texture_matrix0);
+
+    vertex_emissive = emissive;
+}
+

indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl

@@ -0,0 +1,167 @@
+/**
+ * @file pbropaqueF.glsl
+ *
+ * $LicenseInfo:firstyear=2022&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2022, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+
+#ifndef IS_HUD
+
+// deferred opaque implementation
+
+uniform sampler2D diffuseMap;  //always in sRGB space
+
+uniform float metallicFactor;
+uniform float roughnessFactor;
+uniform vec3 emissiveColor;
+uniform sampler2D bumpMap;
+uniform sampler2D emissiveMap;
+uniform sampler2D specularMap; // Packed: Occlusion, Metal, Roughness
+
+out vec4 frag_data[4];
+
+in vec3 vary_position;
+in vec4 vertex_color;
+in vec3 vary_normal;
+in vec3 vary_tangent;
+flat in float vary_sign;
+
+in vec2 base_color_texcoord;
+in vec2 normal_texcoord;
+in vec2 metallic_roughness_texcoord;
+in vec2 emissive_texcoord;
+
+uniform float minimum_alpha; // PBR alphaMode: MASK, See: mAlphaCutoff, setAlphaCutoff()
+
+vec3 linear_to_srgb(vec3 c);
+vec3 srgb_to_linear(vec3 c);
+
+uniform vec4 clipPlane;
+uniform float clipSign;
+
+void mirrorClip(vec3 pos);
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag);
+
+uniform mat3 normal_matrix;
+
+void main()
+{
+    mirrorClip(vary_position);
+
+    vec4 basecolor = texture(diffuseMap, base_color_texcoord.xy).rgba;
+    basecolor.rgb = srgb_to_linear(basecolor.rgb);
+
+    basecolor *= vertex_color;
+
+    if (basecolor.a < minimum_alpha)
+    {
+        discard;
+    }
+
+    vec3 col = basecolor.rgb;
+
+    // from mikktspace.com
+    vec3 vNt = texture(bumpMap, normal_texcoord.xy).xyz*2.0-1.0;
+    float sign = vary_sign;
+    vec3 vN = vary_normal;
+    vec3 vT = vary_tangent.xyz;
+
+    vec3 vB = sign * cross(vN, vT);
+    vec3 tnorm = normalize( vNt.x * vT + vNt.y * vB + vNt.z * vN );
+
+    // RGB = Occlusion, Roughness, Metal
+    // default values, see LLViewerTexture::sDefaultPBRORMImagep
+    //   occlusion 1.0
+    //   roughness 0.0
+    //   metal     0.0
+    vec3 spec = texture(specularMap, metallic_roughness_texcoord.xy).rgb;
+
+    spec.g *= roughnessFactor;
+    spec.b *= metallicFactor;
+
+    vec3 emissive = emissiveColor;
+    emissive *= srgb_to_linear(texture(emissiveMap, emissive_texcoord.xy).rgb);
+
+    tnorm *= gl_FrontFacing ? 1.0 : -1.0;
+
+    //spec.rgb = vec3(1,1,0);
+    //col = vec3(0,0,0);
+    //emissive = vary_tangent.xyz*0.5+0.5;
+    //emissive = vec3(sign*0.5+0.5);
+    //emissive = vNt * 0.5 + 0.5;
+    //emissive = tnorm*0.5+0.5;
+    // See: C++: addDeferredAttachments(), GLSL: softenLightF
+    frag_data[0] = max(vec4(col, 0.0), vec4(0));                                                   // Diffuse
+    frag_data[1] = max(vec4(spec.rgb,0.0), vec4(0));                                    // PBR linear packed Occlusion, Roughness, Metal.
+    frag_data[2] = encodeNormal(tnorm, 0, GBUFFER_FLAG_HAS_PBR); // normal, environment intensity, flags
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = max(vec4(emissive,0), vec4(0));                                                // PBR sRGB Emissive
+#endif
+}
+
+#else
+
+// forward fullbright implementation for HUDs
+
+uniform sampler2D diffuseMap;  //always in sRGB space
+
+uniform vec3 emissiveColor;
+uniform sampler2D emissiveMap;
+
+out vec4 frag_color;
+
+in vec3 vary_position;
+in vec4 vertex_color;
+
+in vec2 base_color_texcoord;
+in vec2 emissive_texcoord;
+
+uniform float minimum_alpha; // PBR alphaMode: MASK, See: mAlphaCutoff, setAlphaCutoff()
+
+vec3 linear_to_srgb(vec3 c);
+vec3 srgb_to_linear(vec3 c);
+
+void main()
+{
+    vec4 basecolor = texture(diffuseMap, base_color_texcoord.xy).rgba;
+    if (basecolor.a < minimum_alpha)
+    {
+        discard;
+    }
+
+    vec3 col = vertex_color.rgb * srgb_to_linear(basecolor.rgb);
+
+    vec3 emissive = emissiveColor;
+    emissive *= srgb_to_linear(texture(emissiveMap, emissive_texcoord.xy).rgb);
+
+    col += emissive;
+
+    // HUDs are rendered after gamma correction, output in sRGB space
+    frag_color.rgb = linear_to_srgb(col);
+    frag_color.a = 0.0;
+}
+
+#endif
+

indra/newview/app_settings/shaders/class1/deferred/pbropaqueV.glsl

@@ -0,0 +1,143 @@
+/**
+ * @file pbropaqueV.glsl
+ *
+ * $LicenseInfo:firstyear=2022&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2022, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+
+#ifndef IS_HUD
+
+//deferred opaque implementation
+
+uniform mat4 modelview_matrix;
+
+#ifdef HAS_SKIN
+uniform mat4 projection_matrix;
+mat4 getObjectSkinnedTransform();
+#else
+uniform mat3 normal_matrix;
+uniform mat4 modelview_projection_matrix;
+#endif
+uniform mat4 texture_matrix0;
+
+uniform vec4[2] texture_base_color_transform;
+uniform vec4[2] texture_normal_transform;
+uniform vec4[2] texture_metallic_roughness_transform;
+uniform vec4[2] texture_emissive_transform;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec3 normal;
+in vec4 tangent;
+in vec2 texcoord0;
+
+out vec2 base_color_texcoord;
+out vec2 normal_texcoord;
+out vec2 metallic_roughness_texcoord;
+out vec2 emissive_texcoord;
+
+out vec4 vertex_color;
+
+out vec3 vary_tangent;
+flat out float vary_sign;
+out vec3 vary_normal;
+out vec3 vary_position;
+
+vec2 texture_transform(vec2 vertex_texcoord, vec4[2] khr_gltf_transform, mat4 sl_animation_transform);
+vec4 tangent_space_transform(vec4 vertex_tangent, vec3 vertex_normal, vec4[2] khr_gltf_transform, mat4 sl_animation_transform);
+
+void main()
+{
+#ifdef HAS_SKIN
+    mat4 mat = getObjectSkinnedTransform();
+
+    mat = modelview_matrix * mat;
+
+    vec3 pos = (mat*vec4(position.xyz,1.0)).xyz;
+    vary_position = pos;
+    gl_Position = projection_matrix*vec4(pos,1.0);
+
+#else
+    vary_position = (modelview_matrix*vec4(position.xyz, 1.0)).xyz;
+    //transform vertex
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+#endif
+
+    base_color_texcoord = texture_transform(texcoord0, texture_base_color_transform, texture_matrix0);
+    normal_texcoord = texture_transform(texcoord0, texture_normal_transform, texture_matrix0);
+    metallic_roughness_texcoord = texture_transform(texcoord0, texture_metallic_roughness_transform, texture_matrix0);
+    emissive_texcoord = texture_transform(texcoord0, texture_emissive_transform, texture_matrix0);
+
+#ifdef HAS_SKIN
+    vec3 n = (mat*vec4(normal.xyz+position.xyz,1.0)).xyz-pos.xyz;
+    vec3 t = (mat*vec4(tangent.xyz+position.xyz,1.0)).xyz-pos.xyz;
+#else //HAS_SKIN
+    vec3 n = normal_matrix * normal;
+    vec3 t = normal_matrix * tangent.xyz;
+#endif
+
+    n = normalize(n);
+
+    vec4 transformed_tangent = tangent_space_transform(vec4(t, tangent.w), n, texture_normal_transform, texture_matrix0);
+    vary_tangent = normalize(transformed_tangent.xyz);
+    vary_sign = transformed_tangent.w;
+    vary_normal = n;
+
+    vertex_color = diffuse_color;
+}
+
+#else
+
+// fullbright HUD implementation
+
+uniform mat4 modelview_projection_matrix;
+
+uniform mat4 texture_matrix0;
+
+uniform vec4[2] texture_base_color_transform;
+uniform vec4[2] texture_emissive_transform;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec2 texcoord0;
+
+out vec2 base_color_texcoord;
+out vec2 emissive_texcoord;
+
+out vec4 vertex_color;
+
+vec2 texture_transform(vec2 vertex_texcoord, vec4[2] khr_gltf_transform, mat4 sl_animation_transform);
+
+void main()
+{
+    //transform vertex
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+
+    base_color_texcoord = texture_transform(texcoord0, texture_base_color_transform, texture_matrix0);
+    emissive_texcoord = texture_transform(texcoord0, texture_emissive_transform, texture_matrix0);
+
+    vertex_color = diffuse_color;
+}
+
+#endif
+
+

indra/newview/app_settings/shaders/class1/deferred/pbrterrainF.glsl

@@ -0,0 +1,439 @@
+/**
+ * @file class1\deferred\terrainF.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+#define TERRAIN_PBR_DETAIL_EMISSIVE 0
+#define TERRAIN_PBR_DETAIL_OCCLUSION -1
+#define TERRAIN_PBR_DETAIL_NORMAL -2
+#define TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS -3
+
+#define TERRAIN_PAINT_TYPE_HEIGHTMAP_WITH_NOISE 0
+#define TERRAIN_PAINT_TYPE_PBR_PAINTMAP 1
+
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+#define TerrainCoord vec4[3]
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+#define TerrainCoord vec2
+#endif
+
+#define MIX_X    1 << 3
+#define MIX_Y    1 << 4
+#define MIX_Z    1 << 5
+#define MIX_W    1 << 6
+
+struct TerrainMix
+{
+    vec4 weight;
+    int type;
+};
+
+TerrainMix get_terrain_mix_weights(float alpha1, float alpha2, float alphaFinal);
+TerrainMix get_terrain_usage_from_weight3(vec3 weight3);
+
+struct PBRMix
+{
+    vec4 col;       // RGB color with alpha, linear space
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+    vec3 orm;       // Occlusion, roughness, metallic
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    vec2 rm;        // Roughness, metallic
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+    vec3 vNt;       // Unpacked normal texture sample, vector
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    vec3 emissive;  // RGB emissive color, linear space
+#endif
+};
+
+PBRMix init_pbr_mix();
+
+PBRMix terrain_sample_and_multiply_pbr(
+    TerrainCoord terrain_coord
+    , sampler2D tex_col
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    , sampler2D tex_orm
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+    , sampler2D tex_vNt
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+    , float transform_sign
+#endif
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    , sampler2D tex_emissive
+#endif
+    , vec4 factor_col
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+    , vec3 factor_orm
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    , vec2 factor_rm
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    , vec3 factor_emissive
+#endif
+    );
+
+PBRMix mix_pbr(PBRMix mix1, PBRMix mix2, float mix2_weight);
+
+out vec4 frag_data[4];
+
+#if TERRAIN_PAINT_TYPE == TERRAIN_PAINT_TYPE_HEIGHTMAP_WITH_NOISE
+uniform sampler2D alpha_ramp;
+#elif TERRAIN_PAINT_TYPE == TERRAIN_PAINT_TYPE_PBR_PAINTMAP
+uniform sampler2D paint_map;
+#endif
+
+// https://registry.khronos.org/glTF/specs/2.0/glTF-2.0.html#additional-textures
+uniform sampler2D detail_0_base_color;
+uniform sampler2D detail_1_base_color;
+uniform sampler2D detail_2_base_color;
+uniform sampler2D detail_3_base_color;
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+uniform sampler2D detail_0_normal;
+uniform sampler2D detail_1_normal;
+uniform sampler2D detail_2_normal;
+uniform sampler2D detail_3_normal;
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+uniform sampler2D detail_0_metallic_roughness;
+uniform sampler2D detail_1_metallic_roughness;
+uniform sampler2D detail_2_metallic_roughness;
+uniform sampler2D detail_3_metallic_roughness;
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+uniform sampler2D detail_0_emissive;
+uniform sampler2D detail_1_emissive;
+uniform sampler2D detail_2_emissive;
+uniform sampler2D detail_3_emissive;
+#endif
+
+uniform vec4[4] baseColorFactors; // See also vertex_color in pbropaqueV.glsl
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+uniform vec4 metallicFactors;
+uniform vec4 roughnessFactors;
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+uniform vec3[4] emissiveColors;
+#endif
+uniform vec4 minimum_alphas; // PBR alphaMode: MASK, See: mAlphaCutoff, setAlphaCutoff()
+
+in vec3 vary_position;
+in vec3 vary_normal;
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+in vec3 vary_tangents[4];
+flat in float vary_signs[4];
+#endif
+
+// vary_texcoord* are used for terrain composition, vary_coords are used for terrain UVs
+#if TERRAIN_PAINT_TYPE == TERRAIN_PAINT_TYPE_HEIGHTMAP_WITH_NOISE
+in vec4 vary_texcoord0;
+in vec4 vary_texcoord1;
+#elif TERRAIN_PAINT_TYPE == TERRAIN_PAINT_TYPE_PBR_PAINTMAP
+in vec2 vary_texcoord;
+#endif
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+in vec4[10] vary_coords;
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+in vec4[2] vary_coords;
+#endif
+
+void mirrorClip(vec3 position);
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag);
+
+float terrain_mix(TerrainMix tm, vec4 tms4);
+
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+// from mikktspace.com
+vec3 mikktspace(vec3 vNt, vec3 vT, float sign)
+{
+    vec3 vN = vary_normal;
+
+    vec3 vB = sign * cross(vN, vT);
+    vec3 tnorm = normalize( vNt.x * vT + vNt.y * vB + vNt.z * vN );
+
+    tnorm *= gl_FrontFacing ? 1.0 : -1.0;
+
+    return tnorm;
+}
+#endif
+
+void main()
+{
+    // Make sure we clip the terrain if we're in a mirror.
+    mirrorClip(vary_position);
+
+    TerrainMix tm;
+#if TERRAIN_PAINT_TYPE == TERRAIN_PAINT_TYPE_HEIGHTMAP_WITH_NOISE
+    float alpha1 = texture(alpha_ramp, vary_texcoord0.zw).a;
+    float alpha2 = texture(alpha_ramp,vary_texcoord1.xy).a;
+    float alphaFinal = texture(alpha_ramp, vary_texcoord1.zw).a;
+
+    tm = get_terrain_mix_weights(alpha1, alpha2, alphaFinal);
+#elif TERRAIN_PAINT_TYPE == TERRAIN_PAINT_TYPE_PBR_PAINTMAP
+    tm = get_terrain_usage_from_weight3(texture(paint_map, vary_texcoord).xyz);
+#endif
+
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+    // RGB = Occlusion, Roughness, Metal
+    // default values, see LLViewerTexture::sDefaultPBRORMImagep
+    //   occlusion 1.0
+    //   roughness 0.0
+    //   metal     0.0
+    vec3[4] orm_factors;
+    orm_factors[0] = vec3(1.0, roughnessFactors.x, metallicFactors.x);
+    orm_factors[1] = vec3(1.0, roughnessFactors.y, metallicFactors.y);
+    orm_factors[2] = vec3(1.0, roughnessFactors.z, metallicFactors.z);
+    orm_factors[3] = vec3(1.0, roughnessFactors.w, metallicFactors.w);
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    vec2[4] rm_factors;
+    rm_factors[0] = vec2(roughnessFactors.x, metallicFactors.x);
+    rm_factors[1] = vec2(roughnessFactors.y, metallicFactors.y);
+    rm_factors[2] = vec2(roughnessFactors.z, metallicFactors.z);
+    rm_factors[3] = vec2(roughnessFactors.w, metallicFactors.w);
+#endif
+
+    PBRMix pbr_mix = init_pbr_mix();
+    PBRMix mix2;
+    TerrainCoord terrain_texcoord;
+    switch (tm.type & MIX_X)
+    {
+    case MIX_X:
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+        terrain_texcoord[0].xy = vary_coords[0].xy;
+        terrain_texcoord[0].zw = vary_coords[0].zw;
+        terrain_texcoord[1].xy = vary_coords[1].xy;
+        terrain_texcoord[1].zw = vary_coords[1].zw;
+        terrain_texcoord[2].xy = vary_coords[2].xy;
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+        terrain_texcoord = vary_coords[0].xy;
+#endif
+        mix2 = terrain_sample_and_multiply_pbr(
+            terrain_texcoord
+            , detail_0_base_color
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+            , detail_0_metallic_roughness
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+            , detail_0_normal
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+            , vary_signs[0]
+#endif
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+            , detail_0_emissive
+#endif
+            , baseColorFactors[0]
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+            , orm_factors[0]
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+            , rm_factors[0]
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+            , emissiveColors[0]
+#endif
+        );
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+        mix2.vNt = mikktspace(mix2.vNt, vary_tangents[0], vary_signs[0]);
+#endif
+        pbr_mix = mix_pbr(pbr_mix, mix2, tm.weight.x);
+        break;
+    default:
+        break;
+    }
+    switch (tm.type & MIX_Y)
+    {
+    case MIX_Y:
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+        terrain_texcoord[0].xy = vary_coords[2].zw;
+        terrain_texcoord[0].zw = vary_coords[3].xy;
+        terrain_texcoord[1].xy = vary_coords[3].zw;
+        terrain_texcoord[1].zw = vary_coords[4].xy;
+        terrain_texcoord[2].xy = vary_coords[4].zw;
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+        terrain_texcoord = vary_coords[0].zw;
+#endif
+        mix2 = terrain_sample_and_multiply_pbr(
+            terrain_texcoord
+            , detail_1_base_color
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+            , detail_1_metallic_roughness
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+            , detail_1_normal
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+            , vary_signs[1]
+#endif
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+            , detail_1_emissive
+#endif
+            , baseColorFactors[1]
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+            , orm_factors[1]
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+            , rm_factors[1]
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+            , emissiveColors[1]
+#endif
+        );
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+        mix2.vNt = mikktspace(mix2.vNt, vary_tangents[1], vary_signs[1]);
+#endif
+        pbr_mix = mix_pbr(pbr_mix, mix2, tm.weight.y);
+        break;
+    default:
+        break;
+    }
+    switch (tm.type & MIX_Z)
+    {
+    case MIX_Z:
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+        terrain_texcoord[0].xy = vary_coords[5].xy;
+        terrain_texcoord[0].zw = vary_coords[5].zw;
+        terrain_texcoord[1].xy = vary_coords[6].xy;
+        terrain_texcoord[1].zw = vary_coords[6].zw;
+        terrain_texcoord[2].xy = vary_coords[7].xy;
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+        terrain_texcoord = vary_coords[1].xy;
+#endif
+        mix2 = terrain_sample_and_multiply_pbr(
+            terrain_texcoord
+            , detail_2_base_color
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+            , detail_2_metallic_roughness
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+            , detail_2_normal
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+            , vary_signs[2]
+#endif
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+            , detail_2_emissive
+#endif
+            , baseColorFactors[2]
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+            , orm_factors[2]
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+            , rm_factors[2]
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+            , emissiveColors[2]
+#endif
+        );
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+        mix2.vNt = mikktspace(mix2.vNt, vary_tangents[2], vary_signs[2]);
+#endif
+        pbr_mix = mix_pbr(pbr_mix, mix2, tm.weight.z);
+        break;
+    default:
+        break;
+    }
+    switch (tm.type & MIX_W)
+    {
+    case MIX_W:
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+        terrain_texcoord[0].xy = vary_coords[7].zw;
+        terrain_texcoord[0].zw = vary_coords[8].xy;
+        terrain_texcoord[1].xy = vary_coords[8].zw;
+        terrain_texcoord[1].zw = vary_coords[9].xy;
+        terrain_texcoord[2].xy = vary_coords[9].zw;
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+        terrain_texcoord = vary_coords[1].zw;
+#endif
+        mix2 = terrain_sample_and_multiply_pbr(
+            terrain_texcoord
+            , detail_3_base_color
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+            , detail_3_metallic_roughness
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+            , detail_3_normal
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+            , vary_signs[3]
+#endif
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+            , detail_3_emissive
+#endif
+            , baseColorFactors[3]
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+            , orm_factors[3]
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+            , rm_factors[3]
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+            , emissiveColors[3]
+#endif
+        );
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+        mix2.vNt = mikktspace(mix2.vNt, vary_tangents[3], vary_signs[3]);
+#endif
+        pbr_mix = mix_pbr(pbr_mix, mix2, tm.weight.w);
+        break;
+    default:
+        break;
+    }
+
+    float minimum_alpha = terrain_mix(tm, minimum_alphas);
+    if (pbr_mix.col.a < minimum_alpha)
+    {
+        discard;
+    }
+    float base_color_factor_alpha = terrain_mix(tm, vec4(baseColorFactors[0].z, baseColorFactors[1].z, baseColorFactors[2].z, baseColorFactors[3].z));
+
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+    vec3 tnorm = normalize(pbr_mix.vNt);
+#else
+    vec3 tnorm = vary_normal;
+#endif
+    tnorm *= gl_FrontFacing ? 1.0 : -1.0;
+
+
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+#define mix_emissive pbr_mix.emissive
+#else
+#define mix_emissive vec3(0)
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+#define mix_orm pbr_mix.orm
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+#define mix_orm vec3(1.0, pbr_mix.rm)
+#else
+// Matte plastic potato terrain
+#define mix_orm vec3(1.0, 1.0, 0.0)
+#endif
+    frag_data[0] = max(vec4(pbr_mix.col.xyz, 0.0), vec4(0));                                                   // Diffuse
+    frag_data[1] = max(vec4(mix_orm.rgb, base_color_factor_alpha), vec4(0));                                    // PBR linear packed Occlusion, Roughness, Metal.
+    frag_data[2] = encodeNormal(tnorm, 0, GBUFFER_FLAG_HAS_PBR); // normal, flags
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = max(vec4(mix_emissive,0), vec4(0));                                                // PBR sRGB Emissive
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/pbrterrainUtilF.glsl

@@ -0,0 +1,522 @@
+/**
+ * @file class1\deferred\pbrterrainUtilF.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+/**
+ * Triplanar mapping implementation adapted from Inigo Quilez' example shader,
+ * MIT license.
+ * https://www.shadertoy.com/view/MtsGWH
+ * Copyright © 2015 Inigo Quilez
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions: The above copyright
+ * notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS",
+ * WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+ * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#define TERRAIN_PBR_DETAIL_EMISSIVE 0
+#define TERRAIN_PBR_DETAIL_OCCLUSION -1
+#define TERRAIN_PBR_DETAIL_NORMAL -2
+#define TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS -3
+
+#define TERRAIN_PAINT_TYPE_HEIGHTMAP_WITH_NOISE 0
+#define TERRAIN_PAINT_TYPE_PBR_PAINTMAP 1
+
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+in vec3 vary_vertex_normal;
+#endif
+
+vec3 srgb_to_linear(vec3 c);
+
+// A relatively agressive threshold for terrain material mixing sampling
+// cutoff. This ensures that only one or two materials are used in most places,
+// making PBR terrain blending more performant. Should be greater than 0 to work.
+#define TERRAIN_RAMP_MIX_THRESHOLD 0.1
+// A small threshold for triplanar mapping sampling cutoff. This and
+// TERRAIN_TRIPLANAR_BLEND_FACTOR together ensures that only one or two samples
+// per texture are used in most places, making triplanar mapping more
+// performant. Should be greater than 0 to work.
+// There's also an artistic design choice in the use of these factors, and the
+// use of triplanar generally. Don't take these triplanar constants for granted.
+#define TERRAIN_TRIPLANAR_MIX_THRESHOLD 0.01
+
+#define SAMPLE_X 1 << 0
+#define SAMPLE_Y 1 << 1
+#define SAMPLE_Z 1 << 2
+#define MIX_X    1 << 3
+#define MIX_Y    1 << 4
+#define MIX_Z    1 << 5
+#define MIX_W    1 << 6
+
+struct PBRMix
+{
+    vec4 col;       // RGB color with alpha, linear space
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+    vec3 orm;       // Occlusion, roughness, metallic
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    vec2 rm;        // Roughness, metallic
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+    vec3 vNt;       // Unpacked normal texture sample, vector
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    vec3 emissive;  // RGB emissive color, linear space
+#endif
+};
+
+PBRMix init_pbr_mix()
+{
+    PBRMix mix;
+    mix.col = vec4(0);
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+    mix.orm = vec3(0);
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    mix.rm = vec2(0);
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+    mix.vNt = vec3(0);
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    mix.emissive = vec3(0);
+#endif
+    return mix;
+}
+
+// Usage example, for two weights:
+// vec2 weights = ... // Weights must add up to 1
+// PBRMix mix = init_pbr_mix();
+// PBRMix mix1 = ...
+// mix = mix_pbr(mix, mix1, weights.x);
+// PBRMix mix2 = ...
+// mix = mix_pbr(mix, mix2, weights.y);
+PBRMix mix_pbr(PBRMix mix1, PBRMix mix2, float mix2_weight)
+{
+    PBRMix mix;
+    mix.col      = mix1.col      + (mix2.col      * mix2_weight);
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+    mix.orm      = mix1.orm      + (mix2.orm      * mix2_weight);
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    mix.rm       = mix1.rm       + (mix2.rm       * mix2_weight);
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+    mix.vNt      = mix1.vNt      + (mix2.vNt      * mix2_weight);
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    mix.emissive = mix1.emissive + (mix2.emissive * mix2_weight);
+#endif
+    return mix;
+}
+
+PBRMix sample_pbr(
+    vec2 uv
+    , sampler2D tex_col
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    , sampler2D tex_orm
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+    , sampler2D tex_vNt
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    , sampler2D tex_emissive
+#endif
+    )
+{
+    PBRMix mix;
+    mix.col = texture(tex_col, uv);
+    mix.col.rgb = srgb_to_linear(mix.col.rgb);
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+    mix.orm = texture(tex_orm, uv).xyz;
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    mix.rm = texture(tex_orm, uv).yz;
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+    mix.vNt = texture(tex_vNt, uv).xyz*2.0-1.0;
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    mix.emissive = srgb_to_linear(texture(tex_emissive, uv).xyz);
+#endif
+    return mix;
+}
+
+struct TerrainTriplanar
+{
+    vec3 weight;
+    int type;
+};
+
+struct TerrainMix
+{
+    vec4 weight;
+    int type;
+};
+
+#define TerrainMixSample vec4[4]
+#define TerrainMixSample3 vec3[4]
+
+TerrainMix get_terrain_mix_weights(float alpha1, float alpha2, float alphaFinal)
+{
+    TerrainMix tm;
+    vec4 sample_x = vec4(1,0,0,0);
+    vec4 sample_y = vec4(0,1,0,0);
+    vec4 sample_z = vec4(0,0,1,0);
+    vec4 sample_w = vec4(0,0,0,1);
+
+    tm.weight = mix( mix(sample_w, sample_z, alpha2), mix(sample_y, sample_x, alpha1), alphaFinal );
+    tm.weight -= TERRAIN_RAMP_MIX_THRESHOLD;
+    ivec4 usage = max(ivec4(0), ivec4(ceil(tm.weight)));
+    // Prevent negative weights and keep weights balanced
+    tm.weight = tm.weight*vec4(usage);
+    tm.weight /= (tm.weight.x + tm.weight.y + tm.weight.z + tm.weight.w);
+
+    tm.type = (usage.x * MIX_X) |
+              (usage.y * MIX_Y) |
+              (usage.z * MIX_Z) |
+              (usage.w * MIX_W);
+    return tm;
+}
+
+// A paintmap weight applier for 4 swatches. The input saves a channel by not
+// storing swatch 1, and assuming the weights of the 4 swatches add to 1.
+// The components of weight3 should be between 0 and 1
+// The sum of the components of weight3 should be between 0 and 1
+TerrainMix get_terrain_usage_from_weight3(vec3 weight3)
+{
+    // These steps ensure the output weights add to between 0 and 1
+    weight3.xyz = max(vec3(0.0), weight3.xyz);
+    weight3.xyz /= max(1.0, weight3.x + weight3.y + weight3.z);
+
+    TerrainMix tm;
+
+    // Extract the first weight from the other weights
+    tm.weight.x = 1.0 - (weight3.x + weight3.y + weight3.z);
+    tm.weight.yzw = weight3.xyz;
+    ivec4 usage = max(ivec4(0), ivec4(ceil(tm.weight)));
+
+    tm.type = (usage.x * MIX_X) |
+              (usage.y * MIX_Y) |
+              (usage.z * MIX_Z) |
+              (usage.w * MIX_W);
+    return tm;
+}
+
+// Inverse of get_terrain_usage_from_weight3, excluding usage flags
+// The components of weight should be between 0 and 1
+// The sum of the components of weight should be 1
+vec3 get_weight3_from_terrain_weight(vec4 weight)
+{
+    // These steps ensure the input weights add to 1
+    weight = max(vec4(0.0), weight);
+    weight.x += 1.0 - sign(weight.x + weight.y + weight.z + weight.w);
+    weight /= weight.x + weight.y + weight.z + weight.w;
+
+    // Then return the input weights with the first weight truncated
+    return weight.yzw;
+}
+
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+TerrainTriplanar _t_triplanar()
+{
+    float sharpness = TERRAIN_TRIPLANAR_BLEND_FACTOR;
+    float threshold = TERRAIN_TRIPLANAR_MIX_THRESHOLD;
+    vec3 weight_signed = pow(abs(vary_vertex_normal), vec3(sharpness));
+    weight_signed /= (weight_signed.x + weight_signed.y + weight_signed.z);
+    weight_signed -= vec3(threshold);
+    TerrainTriplanar tw;
+    // *NOTE: Make sure the threshold doesn't affect the materials
+    tw.weight = max(vec3(0), weight_signed);
+    tw.weight /= (tw.weight.x + tw.weight.y + tw.weight.z);
+    ivec3 usage = ivec3(round(max(vec3(0), sign(weight_signed))));
+    tw.type = ((usage.x) * SAMPLE_X) |
+              ((usage.y) * SAMPLE_Y) |
+              ((usage.z) * SAMPLE_Z);
+    return tw;
+}
+#endif
+
+
+// Assume weights add to 1
+float terrain_mix(TerrainMix tm, vec4 tms4)
+{
+    return (tm.weight.x * tms4[0]) +
+           (tm.weight.y * tms4[1]) +
+           (tm.weight.z * tms4[2]) +
+           (tm.weight.w * tms4[3]);
+}
+
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+// Triplanar mapping
+
+// Pre-transformed texture coordinates for each axial uv slice (Packing: xy, yz, (-x)z, unused)
+#define TerrainCoord vec4[3]
+
+// If sign_or_zero is positive, use uv_unflippped, otherwise use uv_flipped
+vec2 _t_uv(vec2 uv_unflipped, vec2 uv_flipped, float sign_or_zero)
+{
+    return mix(uv_flipped, uv_unflipped, max(0.0, sign_or_zero));
+}
+
+vec3 _t_normal_post_1(vec3 vNt0, float sign_or_zero)
+{
+    // Assume normal is unpacked
+    vec3 vNt1 = vNt0;
+    // Get sign
+    float sign = sign_or_zero;
+    // Handle case where sign is 0
+    sign = (2.0*sign) + 1.0;
+    sign /= abs(sign);
+    // If the sign is negative, rotate normal by 180 degrees
+    vNt1.xy = (min(0, sign) * vNt1.xy) + (min(0, -sign) * -vNt1.xy);
+    return vNt1;
+}
+
+// Triplanar-specific normal texture fixes
+vec3 _t_normal_post_x(vec3 vNt0, float tangent_sign)
+{
+    vec3 vNt_x = _t_normal_post_1(vNt0, sign(vary_vertex_normal.x));
+    // *HACK: Transform normals according to orientation of the UVs
+    vNt_x.xy = vec2(-vNt_x.y, vNt_x.x);
+    vNt_x.xy *= tangent_sign;
+    return vNt_x;
+}
+vec3 _t_normal_post_y(vec3 vNt0)
+{
+    vec3 vNt_y = _t_normal_post_1(vNt0, sign(vary_vertex_normal.y));
+    // *HACK: Transform normals according to orientation of the UVs
+    vNt_y.xy = -vNt_y.xy;
+    return vNt_y;
+}
+vec3 _t_normal_post_z(vec3 vNt0)
+{
+    vec3 vNt_z = _t_normal_post_1(vNt0, sign(vary_vertex_normal.z));
+    return vNt_z;
+}
+
+PBRMix terrain_sample_pbr(
+    TerrainCoord terrain_coord
+    , TerrainTriplanar tw
+    , sampler2D tex_col
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    , sampler2D tex_orm
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+    , sampler2D tex_vNt
+    , float tangent_sign
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    , sampler2D tex_emissive
+#endif
+    )
+{
+    PBRMix mix = init_pbr_mix();
+
+#define get_uv_x() _t_uv(terrain_coord[0].zw, terrain_coord[1].zw, sign(vary_vertex_normal.x))
+#define get_uv_y() _t_uv(terrain_coord[1].xy, terrain_coord[2].xy, sign(vary_vertex_normal.y))
+#define get_uv_z() _t_uv(terrain_coord[0].xy, vec2(0),             sign(vary_vertex_normal.z))
+    switch (tw.type & SAMPLE_X)
+    {
+    case SAMPLE_X:
+        PBRMix mix_x = sample_pbr(
+            get_uv_x()
+            , tex_col
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+            , tex_orm
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+            , tex_vNt
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+            , tex_emissive
+#endif
+            );
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+        // Triplanar-specific normal texture fix
+        mix_x.vNt = _t_normal_post_x(mix_x.vNt, tangent_sign);
+#endif
+        mix = mix_pbr(mix, mix_x, tw.weight.x);
+        break;
+    default:
+        break;
+    }
+
+    switch (tw.type & SAMPLE_Y)
+    {
+    case SAMPLE_Y:
+        PBRMix mix_y = sample_pbr(
+            get_uv_y()
+            , tex_col
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+            , tex_orm
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+            , tex_vNt
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+            , tex_emissive
+#endif
+            );
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+        // Triplanar-specific normal texture fix
+        mix_y.vNt = _t_normal_post_y(mix_y.vNt);
+#endif
+        mix = mix_pbr(mix, mix_y, tw.weight.y);
+        break;
+    default:
+        break;
+    }
+
+    switch (tw.type & SAMPLE_Z)
+    {
+    case SAMPLE_Z:
+        PBRMix mix_z = sample_pbr(
+            get_uv_z()
+            , tex_col
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+            , tex_orm
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+            , tex_vNt
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+            , tex_emissive
+#endif
+            );
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+        // Triplanar-specific normal texture fix
+        // *NOTE: Bottom face has not been tested
+        mix_z.vNt = _t_normal_post_z(mix_z.vNt);
+#endif
+        mix = mix_pbr(mix, mix_z, tw.weight.z);
+        break;
+    default:
+        break;
+    }
+
+    return mix;
+}
+
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+
+#define TerrainCoord vec2
+
+#define terrain_sample_pbr sample_pbr
+
+#endif
+
+PBRMix multiply_factors_pbr(
+    PBRMix mix_in
+    , vec4 factor_col
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+    , vec3 factor_orm
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    , vec2 factor_rm
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    , vec3 factor_emissive
+#endif
+    )
+{
+    PBRMix mix = mix_in;
+    mix.col *= factor_col;
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+    mix.orm *= factor_orm;
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    mix.rm *= factor_rm;
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    mix.emissive *= factor_emissive;
+#endif
+    return mix;
+}
+
+PBRMix terrain_sample_and_multiply_pbr(
+    TerrainCoord terrain_coord
+    , sampler2D tex_col
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    , sampler2D tex_orm
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+    , sampler2D tex_vNt
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+    , float tangent_sign
+#endif
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    , sampler2D tex_emissive
+#endif
+    , vec4 factor_col
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+    , vec3 factor_orm
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    , vec2 factor_rm
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    , vec3 factor_emissive
+#endif
+    )
+{
+    PBRMix mix = terrain_sample_pbr(
+        terrain_coord
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+        , _t_triplanar()
+#endif
+        , tex_col
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+        , tex_orm
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+        , tex_vNt
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+        , tangent_sign
+#endif
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+        , tex_emissive
+#endif
+        );
+
+    mix = multiply_factors_pbr(mix
+        , factor_col
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_OCCLUSION)
+        , factor_orm
+#elif (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+        , factor_rm
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
+        , factor_emissive
+#endif
+    );
+
+    return mix;
+}

indra/newview/app_settings/shaders/class1/deferred/pbrterrainV.glsl

@@ -0,0 +1,204 @@
+/**
+ * @file class1\environment\pbrterrainV.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#define TERRAIN_PBR_DETAIL_EMISSIVE 0
+#define TERRAIN_PBR_DETAIL_OCCLUSION -1
+#define TERRAIN_PBR_DETAIL_NORMAL -2
+#define TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS -3
+
+#define TERRAIN_PAINT_TYPE_HEIGHTMAP_WITH_NOISE 0
+#define TERRAIN_PAINT_TYPE_PBR_PAINTMAP 1
+
+uniform mat3 normal_matrix;
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_matrix;
+uniform mat4 modelview_projection_matrix;
+#if TERRAIN_PAINT_TYPE == TERRAIN_PAINT_TYPE_PBR_PAINTMAP
+uniform float region_scale;
+#endif
+
+in vec3 position;
+in vec3 normal;
+in vec4 tangent;
+in vec4 diffuse_color;
+#if TERRAIN_PAINT_TYPE == TERRAIN_PAINT_TYPE_HEIGHTMAP_WITH_NOISE
+in vec2 texcoord1;
+#endif
+
+out vec3 vary_position;
+out vec3 vary_normal;
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+out vec3 vary_vertex_normal; // Used by pbrterrainUtilF.glsl
+#endif
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+out vec3 vary_tangents[4];
+flat out float vary_signs[4];
+#endif
+
+// vary_texcoord* are used for terrain composition, vary_coords are used for terrain UVs
+#if TERRAIN_PAINT_TYPE == TERRAIN_PAINT_TYPE_HEIGHTMAP_WITH_NOISE
+out vec4 vary_texcoord0;
+out vec4 vary_texcoord1;
+#elif TERRAIN_PAINT_TYPE == TERRAIN_PAINT_TYPE_PBR_PAINTMAP
+out vec2 vary_texcoord;
+#endif
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+out vec4[10] vary_coords;
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+out vec4[2] vary_coords;
+#endif
+
+// *HACK: Each material uses only one texture transform, but the KHR texture
+// transform spec allows handling texture transforms separately for each
+// individual texture info.
+uniform vec4[5] terrain_texture_transforms;
+
+vec2 terrain_texture_transform(vec2 vertex_texcoord, vec4[2] khr_gltf_transform);
+vec4 terrain_tangent_space_transform(vec4 vertex_tangent, vec3 vertex_normal, vec4[2] khr_gltf_transform);
+
+void main()
+{
+    //transform vertex
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+    vary_position = (modelview_matrix*vec4(position.xyz, 1.0)).xyz;
+
+    vec3 n = normal_matrix * normal;
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+    vary_vertex_normal = normal;
+#endif
+    vec3 t = normal_matrix * tangent.xyz;
+
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+    {
+        vec4[2] ttt;
+        vec4 transformed_tangent;
+        // material 1
+        ttt[0].xyz = terrain_texture_transforms[0].xyz;
+        ttt[1].x = terrain_texture_transforms[0].w;
+        ttt[1].y = terrain_texture_transforms[1].x;
+        transformed_tangent = terrain_tangent_space_transform(vec4(t, tangent.w), n, ttt);
+        vary_tangents[0] = normalize(transformed_tangent.xyz);
+        vary_signs[0] = transformed_tangent.w;
+        // material 2
+        ttt[0].xyz = terrain_texture_transforms[1].yzw;
+        ttt[1].xy = terrain_texture_transforms[2].xy;
+        transformed_tangent = terrain_tangent_space_transform(vec4(t, tangent.w), n, ttt);
+        vary_tangents[1] = normalize(transformed_tangent.xyz);
+        vary_signs[1] = transformed_tangent.w;
+        // material 3
+        ttt[0].xy = terrain_texture_transforms[2].zw;
+        ttt[0].z = terrain_texture_transforms[3].x;
+        ttt[1].xy = terrain_texture_transforms[3].yz;
+        transformed_tangent = terrain_tangent_space_transform(vec4(t, tangent.w), n, ttt);
+        vary_tangents[2] = normalize(transformed_tangent.xyz);
+        vary_signs[2] = transformed_tangent.w;
+        // material 4
+        ttt[0].x = terrain_texture_transforms[3].w;
+        ttt[0].yz = terrain_texture_transforms[4].xy;
+        ttt[1].xy = terrain_texture_transforms[4].zw;
+        transformed_tangent = terrain_tangent_space_transform(vec4(t, tangent.w), n, ttt);
+        vary_tangents[3] = normalize(transformed_tangent.xyz);
+        vary_signs[3] = transformed_tangent.w;
+    }
+#endif
+    vary_normal = normalize(n);
+
+    // Transform and pass tex coords
+    {
+        vec4[2] ttt;
+#define transform_xy()             terrain_texture_transform(position.xy,               ttt)
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+// Don't care about upside-down (transform_xy_flipped())
+#define transform_yz()             terrain_texture_transform(position.yz,               ttt)
+#define transform_negx_z()         terrain_texture_transform(position.xz * vec2(-1, 1), ttt)
+#define transform_yz_flipped()     terrain_texture_transform(position.yz * vec2(-1, 1), ttt)
+#define transform_negx_z_flipped() terrain_texture_transform(position.xz,               ttt)
+        // material 1
+        ttt[0].xyz = terrain_texture_transforms[0].xyz;
+        ttt[1].x = terrain_texture_transforms[0].w;
+        ttt[1].y = terrain_texture_transforms[1].x;
+        vary_coords[0].xy = transform_xy();
+        vary_coords[0].zw = transform_yz();
+        vary_coords[1].xy = transform_negx_z();
+        vary_coords[1].zw = transform_yz_flipped();
+        vary_coords[2].xy = transform_negx_z_flipped();
+        // material 2
+        ttt[0].xyz = terrain_texture_transforms[1].yzw;
+        ttt[1].xy = terrain_texture_transforms[2].xy;
+        vary_coords[2].zw = transform_xy();
+        vary_coords[3].xy = transform_yz();
+        vary_coords[3].zw = transform_negx_z();
+        vary_coords[4].xy = transform_yz_flipped();
+        vary_coords[4].zw = transform_negx_z_flipped();
+        // material 3
+        ttt[0].xy = terrain_texture_transforms[2].zw;
+        ttt[0].z = terrain_texture_transforms[3].x;
+        ttt[1].xy = terrain_texture_transforms[3].yz;
+        vary_coords[5].xy = transform_xy();
+        vary_coords[5].zw = transform_yz();
+        vary_coords[6].xy = transform_negx_z();
+        vary_coords[6].zw = transform_yz_flipped();
+        vary_coords[7].xy = transform_negx_z_flipped();
+        // material 4
+        ttt[0].x = terrain_texture_transforms[3].w;
+        ttt[0].yz = terrain_texture_transforms[4].xy;
+        ttt[1].xy = terrain_texture_transforms[4].zw;
+        vary_coords[7].zw = transform_xy();
+        vary_coords[8].xy = transform_yz();
+        vary_coords[8].zw = transform_negx_z();
+        vary_coords[9].xy = transform_yz_flipped();
+        vary_coords[9].zw = transform_negx_z_flipped();
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+        // material 1
+        ttt[0].xyz = terrain_texture_transforms[0].xyz;
+        ttt[1].x = terrain_texture_transforms[0].w;
+        ttt[1].y = terrain_texture_transforms[1].x;
+        vary_coords[0].xy = transform_xy();
+        // material 2
+        ttt[0].xyz = terrain_texture_transforms[1].yzw;
+        ttt[1].xy = terrain_texture_transforms[2].xy;
+        vary_coords[0].zw = transform_xy();
+        // material 3
+        ttt[0].xy = terrain_texture_transforms[2].zw;
+        ttt[0].z = terrain_texture_transforms[3].x;
+        ttt[1].xy = terrain_texture_transforms[3].yz;
+        vary_coords[1].xy = transform_xy();
+        // material 4
+        ttt[0].x = terrain_texture_transforms[3].w;
+        ttt[0].yz = terrain_texture_transforms[4].xy;
+        ttt[1].xy = terrain_texture_transforms[4].zw;
+        vary_coords[1].zw = transform_xy();
+#endif
+    }
+
+#if TERRAIN_PAINT_TYPE == TERRAIN_PAINT_TYPE_HEIGHTMAP_WITH_NOISE
+    vec2 tc = texcoord1.xy;
+    vary_texcoord0.zw = tc.xy;
+    vary_texcoord1.xy = tc.xy-vec2(2.0, 0.0);
+    vary_texcoord1.zw = tc.xy-vec2(1.0, 0.0);
+#elif TERRAIN_PAINT_TYPE == TERRAIN_PAINT_TYPE_PBR_PAINTMAP
+    vary_texcoord = position.xy / region_scale;
+#endif
+}

indra/newview/app_settings/shaders/class1/deferred/postDeferredF.glsl

@@ -0,0 +1,127 @@
+/**
+ * @file postDeferredF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+uniform sampler2D diffuseRect;
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+uniform float max_cof;
+uniform float res_scale;
+
+in vec2 vary_fragcoord;
+
+void dofSample(inout vec4 diff, inout float w, float min_sc, vec2 tc)
+{
+    vec4 s = texture(diffuseRect, tc);
+
+    float sc = abs(s.a*2.0-1.0)*max_cof;
+
+    if (sc > min_sc) //sampled pixel is more "out of focus" than current sample radius
+    {
+        float wg = 0.25;
+
+        // de-weight dull areas to make highlights 'pop'
+        wg += s.r+s.g+s.b;
+
+        diff += wg*s;
+
+        w += wg;
+    }
+}
+
+void dofSampleNear(inout vec4 diff, inout float w, float min_sc, vec2 tc)
+{
+    vec4 s = texture(diffuseRect, tc);
+
+    float wg = 0.25;
+
+    // de-weight dull areas to make highlights 'pop'
+    wg += s.r+s.g+s.b;
+
+    diff += wg*s;
+
+    w += wg;
+}
+
+vec3 clampHDRRange(vec3 color);
+
+void main()
+{
+    vec2 tc = vary_fragcoord.xy;
+
+    vec4 diff = texture(diffuseRect, vary_fragcoord.xy);
+
+    {
+        float w = 1.0;
+
+        float sc = (diff.a*2.0-1.0)*max_cof;
+
+        float PI = 3.14159265358979323846264;
+
+        // sample quite uniformly spaced points within a circle, for a circular 'bokeh'
+        if (sc > 0.5)
+        {
+            while (sc > 0.5)
+            {
+                int its = int(max(1.0,(sc*3.7)));
+                for (int i=0; i<its; ++i)
+                {
+                    float ang = sc+i*2*PI/its; // sc is added for rotary perturbance
+                    float samp_x = sc*sin(ang);
+                    float samp_y = sc*cos(ang);
+                    // you could test sample coords against an interesting non-circular aperture shape here, if desired.
+                    dofSampleNear(diff, w, sc, vary_fragcoord.xy + (vec2(samp_x,samp_y) / screen_res));
+                }
+                sc -= 1.0;
+            }
+        }
+        else if (sc < -0.5)
+        {
+            sc = abs(sc);
+            while (sc > 0.5)
+            {
+                int its = int(max(1.0,(sc*3.7)));
+                for (int i=0; i<its; ++i)
+                {
+                    float ang = sc+i*2*PI/its; // sc is added for rotary perturbance
+                    float samp_x = sc*sin(ang);
+                    float samp_y = sc*cos(ang);
+                    // you could test sample coords against an interesting non-circular aperture shape here, if desired.
+                    dofSample(diff, w, sc, vary_fragcoord.xy + (vec2(samp_x,samp_y) / screen_res));
+                }
+                sc -= 1.0;
+            }
+        }
+
+        diff /= w;
+    }
+
+    diff.rgb = clampHDRRange(diff.rgb);
+    frag_color = diff;
+}

indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl

@@ -0,0 +1,61 @@
+/**
+ * @file postDeferredGammaCorrect.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+uniform sampler2D diffuseRect;
+
+uniform float gamma;
+uniform vec2 screen_res;
+in vec2 vary_fragcoord;
+
+vec3 linear_to_srgb(vec3 cl);
+
+vec3 legacyGamma(vec3 color)
+{
+    vec3 c = 1. - clamp(color, vec3(0.), vec3(1.));
+    c = 1. - pow(c, vec3(gamma)); // s/b inverted already CPU-side
+
+    return c;
+}
+
+vec3 clampHDRRange(vec3 color);
+
+void main()
+{
+    //this is the one of the rare spots where diffuseRect contains linear color values (not sRGB)
+    vec4 diff = texture(diffuseRect, vary_fragcoord);
+    diff.rgb = linear_to_srgb(diff.rgb);
+
+#ifdef LEGACY_GAMMA
+    diff.rgb = legacyGamma(diff.rgb);
+#endif
+
+    diff.rgb = clampHDRRange(diff.rgb);
+    frag_color = diff;
+}
+

indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl

@@ -0,0 +1,93 @@
+/**
+ * @file postDeferredNoDoFF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+uniform sampler2D diffuseRect;
+uniform sampler2D depthMap;
+
+uniform vec2 screen_res;
+in vec2 vary_fragcoord;
+
+//=================================
+// borrowed noise from:
+//  <https://www.shadertoy.com/view/4dS3Wd>
+//  By Morgan McGuire @morgan3d, http://graphicscodex.com
+//
+float hash(float n) { return fract(sin(n) * 1e4); }
+float hash(vec2 p) { return fract(1e4 * sin(17.0 * p.x + p.y * 0.1) * (0.1 + abs(sin(p.y * 13.0 + p.x)))); }
+
+float noise(float x) {
+    float i = floor(x);
+    float f = fract(x);
+    float u = f * f * (3.0 - 2.0 * f);
+    return mix(hash(i), hash(i + 1.0), u);
+}
+
+float noise(vec2 x) {
+    vec2 i = floor(x);
+    vec2 f = fract(x);
+
+    // Four corners in 2D of a tile
+    float a = hash(i);
+    float b = hash(i + vec2(1.0, 0.0));
+    float c = hash(i + vec2(0.0, 1.0));
+    float d = hash(i + vec2(1.0, 1.0));
+
+    // Simple 2D lerp using smoothstep envelope between the values.
+    // return vec3(mix(mix(a, b, smoothstep(0.0, 1.0, f.x)),
+    //          mix(c, d, smoothstep(0.0, 1.0, f.x)),
+    //          smoothstep(0.0, 1.0, f.y)));
+
+    // Same code, with the clamps in smoothstep and common subexpressions
+    // optimized away.
+    vec2 u = f * f * (3.0 - 2.0 * f);
+    return mix(a, b, u.x) + (c - a) * u.y * (1.0 - u.x) + (d - b) * u.x * u.y;
+}
+
+//=============================
+
+vec3 clampHDRRange(vec3 color);
+
+
+void main()
+{
+    vec4 diff = texture(diffuseRect, vary_fragcoord.xy);
+
+#ifdef HAS_NOISE
+    vec2 tc = vary_fragcoord.xy*screen_res*4.0;
+    vec3 seed = (diff.rgb+vec3(1.0))*vec3(tc.xy, tc.x+tc.y);
+    vec3 nz = vec3(noise(seed.rg), noise(seed.gb), noise(seed.rb));
+    diff.rgb += nz*0.003;
+#endif
+
+    diff.rgb = clampHDRRange(diff.rgb);
+    frag_color = diff;
+
+    gl_FragDepth = texture(depthMap, vary_fragcoord.xy).r;
+}
+

indra/newview/app_settings/shaders/class1/deferred/postDeferredNoTCV.glsl

@@ -0,0 +1,38 @@
+/**
+ * @file postDeferredV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+in vec3 position;
+
+out vec2 vary_fragcoord;
+
+uniform vec2 screen_res;
+
+void main()
+{
+    //transform vertex
+    vec4 pos = vec4(position.xyz, 1.0);
+    gl_Position = pos;
+    vary_fragcoord = (pos.xy*0.5+0.5);
+}

indra/newview/app_settings/shaders/class1/deferred/postDeferredTonemap.glsl

@@ -0,0 +1,54 @@
+/**
+ * @file postDeferredTonemap.glsl
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+uniform sampler2D diffuseRect;
+
+in vec2 vary_fragcoord;
+
+vec3 linear_to_srgb(vec3 cl);
+vec3 toneMap(vec3 color);
+
+vec3 clampHDRRange(vec3 color);
+
+void main()
+{
+    //this is the one of the rare spots where diffuseRect contains linear color values (not sRGB)
+    vec4 diff = texture(diffuseRect, vary_fragcoord);
+
+#ifndef NO_POST
+    diff.rgb = toneMap(diff.rgb);
+#else
+    diff.rgb = clamp(diff.rgb, vec3(0.0), vec3(1.0));
+#endif
+
+    diff.rgb = clampHDRRange(diff.rgb);
+    //debugExposure(diff.rgb);
+    frag_color = max(diff, vec4(0));
+}
+

indra/newview/app_settings/shaders/class1/deferred/postDeferredV.glsl

@@ -0,0 +1,42 @@
+/**
+ * @file postDeferredV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+in vec3 position;
+
+out vec2 vary_fragcoord;
+out vec2 vary_tc;
+
+uniform vec2 tc_scale;
+
+uniform vec2 screen_res;
+
+void main()
+{
+    //transform vertex
+    vec4 pos = vec4(position.xyz, 1.0);
+    gl_Position = pos;
+    vary_tc = (pos.xy*0.5+0.5)*tc_scale;
+    vary_fragcoord = (pos.xy*0.5+0.5);
+}

indra/newview/app_settings/shaders/class1/deferred/postDeferredVisualizeBuffers.glsl

@@ -0,0 +1,41 @@
+/**
+ * @file postDeferredNoDoFF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+uniform sampler2D diffuseRect;
+uniform float mipLevel;
+
+in vec2 vary_fragcoord;
+
+void main()
+{
+    vec4 diff = textureLod(diffuseRect, vary_fragcoord.xy, mipLevel);
+
+    frag_color = diff;
+}
+

indra/newview/app_settings/shaders/class1/deferred/rlvF.glsl

@@ -0,0 +1,151 @@
+/**
+ *
+ * Copyright (c) 2018-2020, Kitty Barnett
+ *
+ * The source code in this file is provided to you under the terms of the
+ * GNU Lesser General Public License, version 2.1, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. Terms of the LGPL can be found in doc/LGPL-licence.txt
+ * in this distribution, or online at http://www.gnu.org/licenses/lgpl-2.1.txt
+ *
+ * By copying, modifying or distributing this software, you acknowledge that
+ * you have read and understood your obligations described above, and agree to
+ * abide by those obligations.
+ *
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+in vec2 vary_fragcoord;
+
+uniform sampler2D diffuseRect;
+uniform vec2 screen_res;
+
+uniform int  rlvEffectMode;     // ESphereMode
+uniform vec4 rlvEffectParam1;   // Sphere origin (in local coordinates)
+uniform vec4 rlvEffectParam2;   // Min/max dist + min/max value
+uniform bvec2 rlvEffectParam3;  // Min/max dist extend
+uniform vec4 rlvEffectParam4;   // Sphere params (=color when using blend)
+uniform vec2 rlvEffectParam5;   // Blur direction (not used for blend)
+
+#define SPHERE_ORIGIN       rlvEffectParam1.xyz
+#define SPHERE_DISTMIN      rlvEffectParam2.y
+#define SPHERE_DISTMAX      rlvEffectParam2.w
+#define SPHERE_DISTEXTEND   rlvEffectParam3
+#define SPHERE_VALUEMIN     rlvEffectParam2.x
+#define SPHERE_VALUEMAX     rlvEffectParam2.z
+#define SPHERE_PARAMS       rlvEffectParam4
+#define BLUR_DIRECTION      rlvEffectParam5.xy
+
+vec4 getPositionWithDepth(vec2 pos_screen, float depth);
+float getDepth(vec2 pos_screen);
+
+vec3 blur13(sampler2D source, vec2 tc, vec2 direction)
+{
+  vec4 color = vec4(0.0);
+  vec2 off1 = vec2(1.411764705882353) * direction;
+  vec2 off2 = vec2(3.2941176470588234) * direction;
+  vec2 off3 = vec2(5.176470588235294) * direction;
+
+  color += texture(source, tc) * 0.1964825501511404;
+
+  color += texture(source, tc + off1 / screen_res) * 0.2969069646728344;
+  color += texture(source, tc - off1 / screen_res) * 0.2969069646728344;
+
+  color += texture(source, tc + off2 / screen_res) * 0.09447039785044732;
+  color += texture(source, tc - off2 / screen_res) * 0.09447039785044732;
+
+  color += texture(source, tc + off3 / screen_res) * 0.010381362401148057;
+  color += texture(source, tc - off3 / screen_res) * 0.010381362401148057;
+
+  return color.xyz;
+}
+
+const float pi = 3.14159265;
+
+// http://callumhay.blogspot.com/2010/09/gaussian-blur-shader-glsl.html
+vec3 blurVariable(sampler2D source, vec2 tc, float kernelSize, vec2 direction, float strength) {
+  float numBlurPixelsPerSide = float(kernelSize / 2);
+
+  // Incremental Gaussian Coefficent Calculation (See GPU Gems 3 pp. 877 - 889)
+  vec3 incrementalGaussian;
+  incrementalGaussian.x = 1.0 / (sqrt(2.0 * pi) * strength);
+  incrementalGaussian.y = exp(-0.5 / (strength * strength));
+  incrementalGaussian.z = incrementalGaussian.y * incrementalGaussian.y;
+
+  vec4 avgValue = vec4(0.0, 0.0, 0.0, 0.0);
+  float coefficientSum = 0.0;
+
+  // Take the central sample first...
+  avgValue += texture(source, tc) * incrementalGaussian.x;
+  coefficientSum += incrementalGaussian.x;
+  incrementalGaussian.xy *= incrementalGaussian.yz;
+
+  // Go through the remaining 8 vertical samples (4 on each side of the center)
+  for (float i = 1.0; i <= numBlurPixelsPerSide; i++) {
+    avgValue += texture(source, tc - i * direction / screen_res) * incrementalGaussian.x;
+    avgValue += texture(source, tc + i * direction / screen_res) * incrementalGaussian.x;
+    coefficientSum += 2.0 * incrementalGaussian.x;
+    incrementalGaussian.xy *= incrementalGaussian.yz;
+  }
+
+  return (avgValue / coefficientSum).rgb;
+}
+
+vec3 chromaticAberration(sampler2D source, vec2 tc, vec2 redDrift, vec2 blueDrift, float strength)
+{
+    vec3 sourceColor = texture(source, tc).rgb;
+
+    // Sample the color components
+    vec3 driftColor;
+    driftColor.r = texture(source, tc + redDrift / screen_res).r;
+    driftColor.g = sourceColor.g;
+    driftColor.b = texture(source, tc + blueDrift / screen_res).b;
+
+    // Adjust the strength of the effect
+    return mix(sourceColor, driftColor, strength);
+}
+
+void main()
+{
+    vec2 fragTC = vary_fragcoord.xy;
+    vec3 fragPosLocal = getPositionWithDepth(fragTC, getDepth(fragTC)).xyz;
+    float distance = length(fragPosLocal.xyz - SPHERE_ORIGIN);
+
+    // Linear non-branching interpolation of the strength of the sphere effect (replaces if/elseif/else for x < min, min <= x <= max and x > max)
+    float effectStrength = SPHERE_VALUEMIN + mix(0, SPHERE_VALUEMAX - SPHERE_VALUEMIN, (distance - SPHERE_DISTMIN) / (SPHERE_DISTMAX - SPHERE_DISTMIN));
+    effectStrength = mix(effectStrength, mix(0, SPHERE_VALUEMIN, SPHERE_DISTEXTEND.x), distance < SPHERE_DISTMIN);
+    effectStrength = mix(effectStrength, mix(0, SPHERE_VALUEMAX, SPHERE_DISTEXTEND.y), distance > SPHERE_DISTMAX);
+
+    vec3 fragColor ;
+    switch (rlvEffectMode)
+    {
+        case 0:     // Blend
+            fragColor = texture(diffuseRect, fragTC).rgb;
+            fragColor = mix(fragColor, SPHERE_PARAMS.rgb, effectStrength);
+            break;
+        case 1:     // Blur (fixed)
+            fragColor = blur13(diffuseRect, fragTC, BLUR_DIRECTION * vec2(effectStrength));
+            break;
+        case 2:     // Blur (variable)
+            fragColor = texture(diffuseRect, fragTC).rgb;
+            fragColor = mix(fragColor, blurVariable(diffuseRect, fragTC, SPHERE_PARAMS.x, BLUR_DIRECTION, effectStrength), bvec3(effectStrength > 0));
+            break;
+        case 3:     // ChromaticAberration
+            fragColor = chromaticAberration(diffuseRect, fragTC, SPHERE_PARAMS.xy, SPHERE_PARAMS.zw, effectStrength);
+            break;
+        case 4:     // Pixelate
+            {
+                effectStrength = sign(effectStrength);
+                float pixelWidth = max(1, round(SPHERE_PARAMS.x * effectStrength)) / screen_res.x;
+                float pixelHeight = max(1, round(SPHERE_PARAMS.y * effectStrength)) / screen_res.y;
+                fragTC = vec2(pixelWidth * floor(fragTC.x / pixelWidth), pixelHeight * floor(fragTC.y / pixelHeight));
+                fragColor = texture(diffuseRect, fragTC).rgb;
+            }
+            break;
+    }
+
+    frag_color.rgb = fragColor;
+    frag_color.a = 0.0;
+}

indra/newview/app_settings/shaders/class1/deferred/rlvV.glsl

@@ -0,0 +1,29 @@
+/**
+ *
+ * Copyright (c) 2018, Kitty Barnett
+ *
+ * The source code in this file is provided to you under the terms of the
+ * GNU Lesser General Public License, version 2.1, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. Terms of the LGPL can be found in doc/LGPL-licence.txt
+ * in this distribution, or online at http://www.gnu.org/licenses/lgpl-2.1.txt
+ *
+ * By copying, modifying or distributing this software, you acknowledge that
+ * you have read and understood your obligations described above, and agree to
+ * abide by those obligations.
+ *
+ */
+
+in vec3 position;
+
+out vec2 vary_fragcoord;
+
+void main()
+{
+    //transform vertex
+    vec4 pos = vec4(position.xyz, 1.0);
+    gl_Position = pos;
+
+
+    vary_fragcoord = (pos.xy*0.5+0.5);
+}

indra/newview/app_settings/shaders/class1/deferred/screenSpaceReflUtil.glsl

@@ -0,0 +1,37 @@
+/**
+ * @file class3/deferred/screenSpaceReflUtil.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+// debug stub
+
+float random (vec2 uv)
+{
+    return 0.f;
+}
+
+float tapScreenSpaceReflection(int totalSamples, vec2 tc, vec3 viewPos, vec3 n, inout vec4 collectedColor, sampler2D source, float glossiness)
+{
+    collectedColor = vec4(0);
+    return 0.f;
+}

indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl

@@ -0,0 +1,63 @@
+/**
+ * @file shadowAlphaMaskF.glsl
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+in vec4 post_pos;
+in float target_pos_x;
+in vec4 vertex_color;
+in vec2 vary_texcoord0;
+uniform float minimum_alpha;
+
+void main()
+{
+    float alpha = diffuseLookup(vary_texcoord0.xy).a;
+
+    if (alpha < minimum_alpha)
+    {
+        discard;
+    }
+
+#if !defined(IS_FULLBRIGHT)
+    alpha *= vertex_color.a;
+#endif
+
+    if (alpha < 0.05) // treat as totally transparent
+    {
+        discard;
+    }
+
+    if (alpha < 0.88) // treat as semi-transparent
+    {
+        if (fract(0.5*floor(target_pos_x / post_pos.w )) < 0.25)
+        {
+            discard;
+        }
+    }
+
+    frag_color = vec4(1,1,1,1);
+}

indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskV.glsl

@@ -0,0 +1,72 @@
+/**
+ * @file shadowAlphaMaskV.glsl
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 texture_matrix0;
+#if defined(HAS_SKIN)
+uniform mat4 modelview_matrix;
+uniform mat4 projection_matrix;
+mat4 getObjectSkinnedTransform();
+#else
+uniform mat4 modelview_projection_matrix;
+#endif
+
+uniform float shadow_target_width;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec2 texcoord0;
+
+out vec4 post_pos;
+out float target_pos_x;
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
+
+void passTextureIndex();
+
+void main()
+{
+    //transform vertex
+#if defined(HAS_SKIN)
+    vec4 pre_pos = vec4(position.xyz, 1.0);
+    mat4 mat = getObjectSkinnedTransform();
+    mat = modelview_matrix * mat;
+    vec4 pos = mat * pre_pos;
+    pos = projection_matrix * pos;
+#else
+    vec4 pre_pos = vec4(position.xyz, 1.0);
+    vec4 pos = modelview_projection_matrix * pre_pos;
+#endif
+
+    target_pos_x = 0.5 * (shadow_target_width - 1.0) * pos.x;
+
+    post_pos = pos;
+
+    gl_Position = pos;
+
+    passTextureIndex();
+
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+    vertex_color = diffuse_color;
+}

indra/newview/app_settings/shaders/class1/deferred/shadowCubeV.glsl

@@ -0,0 +1,40 @@
+/**
+ * @file shadowCubeV.glsl
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+
+uniform vec3 box_center;
+uniform vec3 box_size;
+
+void main()
+{
+    //transform vertex
+    vec3 p = position*box_size+box_center;
+    vec4 pos = modelview_projection_matrix*vec4(p.xyz, 1.0);
+
+    gl_Position = pos;
+}

indra/newview/app_settings/shaders/class1/deferred/shadowF.glsl

@@ -0,0 +1,31 @@
+/**
+ * @file shadowF.glsl
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+out vec4 frag_color;
+
+void main()
+{
+    frag_color = vec4(1,1,1,1);
+}

indra/newview/app_settings/shaders/class1/deferred/shadowSkinnedV.glsl

@@ -0,0 +1,43 @@
+/**
+ * @file shadowSkinnedV.glsl
+ *
+ * $LicenseInfo:firstyear=2021&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 modelview_matrix;
+uniform mat4 projection_matrix;
+
+in vec3 position;
+
+mat4 getObjectSkinnedTransform();
+
+void main()
+{
+    //transform vertex
+    mat4 mat = getObjectSkinnedTransform();
+
+    mat = modelview_matrix * mat;
+    vec4 pos = (mat*vec4(position.xyz, 1.0));
+    pos = projection_matrix*pos;
+
+    gl_Position = pos;
+}

indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl

@@ -0,0 +1,242 @@
+/**
+ * @file class1/deferred/shadowUtil.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform sampler2D   normalMap;
+
+#if defined(SUN_SHADOW)
+uniform sampler2DShadow shadowMap0;
+uniform sampler2DShadow shadowMap1;
+uniform sampler2DShadow shadowMap2;
+uniform sampler2DShadow shadowMap3;
+#endif
+
+#if defined(SPOT_SHADOW)
+uniform sampler2DShadow shadowMap4;
+uniform sampler2DShadow shadowMap5;
+#endif
+
+uniform vec3 sun_dir;
+uniform vec3 moon_dir;
+uniform vec2 shadow_res;
+uniform vec2 proj_shadow_res;
+uniform mat4 shadow_matrix[6];
+uniform vec4 shadow_clip;
+uniform float shadow_bias;
+uniform float shadow_offset;
+uniform float spot_shadow_bias;
+uniform float spot_shadow_offset;
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+uniform int sun_up_factor;
+
+float pcfShadow(sampler2DShadow shadowMap, vec3 norm, vec4 stc, float bias_mul, vec2 pos_screen, vec3 light_dir)
+{
+#if defined(SUN_SHADOW)
+    float offset = shadow_bias * bias_mul;
+    stc.xyz /= stc.w;
+    stc.z += offset * 2.0;
+    stc.x = floor(stc.x*shadow_res.x + fract(pos_screen.y*shadow_res.y))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+    float cs = texture(shadowMap, stc.xyz);
+    float shadow = cs * 4.0;
+    shadow += texture(shadowMap, stc.xyz+vec3( 1.5/shadow_res.x,  0.5/shadow_res.y, 0.0));
+    shadow += texture(shadowMap, stc.xyz+vec3( 0.5/shadow_res.x, -1.5/shadow_res.y, 0.0));
+    shadow += texture(shadowMap, stc.xyz+vec3(-1.5/shadow_res.x, -0.5/shadow_res.y, 0.0));
+    shadow += texture(shadowMap, stc.xyz+vec3(-0.5/shadow_res.x,  1.5/shadow_res.y, 0.0));
+    return clamp(shadow * 0.125, 0.0, 1.0);
+#else
+    return 1.0;
+#endif
+}
+
+float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
+{
+#if defined(SPOT_SHADOW)
+    stc.xyz /= stc.w;
+    stc.z += spot_shadow_bias * bias_scale;
+    stc.x = floor(proj_shadow_res.x * stc.x + fract(pos_screen.y*0.666666666)) / proj_shadow_res.x; // snap
+
+    float cs = texture(shadowMap, stc.xyz);
+    float shadow = cs;
+
+    vec2 off = 1.0/proj_shadow_res;
+    off.y *= 1.5;
+
+    shadow += texture(shadowMap, stc.xyz+vec3(off.x*2.0, off.y, 0.0));
+    shadow += texture(shadowMap, stc.xyz+vec3(off.x, -off.y, 0.0));
+    shadow += texture(shadowMap, stc.xyz+vec3(-off.x, off.y, 0.0));
+    shadow += texture(shadowMap, stc.xyz+vec3(-off.x*2.0, -off.y, 0.0));
+    return shadow*0.2;
+#else
+    return 1.0;
+#endif
+}
+
+float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
+{
+#if defined(SUN_SHADOW)
+    float shadow = 0.0f;
+    vec3 light_dir = normalize((sun_up_factor == 1) ? sun_dir : moon_dir);
+
+    float dp_directional_light = max(0.0, dot(norm.xyz, light_dir));
+          dp_directional_light = clamp(dp_directional_light, 0.0, 1.0);
+
+    vec3 shadow_pos = pos.xyz;
+
+    vec3 offset = light_dir.xyz * (1.0 - dp_directional_light);
+
+    shadow_pos += offset * shadow_offset * 2.0;
+
+    vec4 spos = vec4(shadow_pos.xyz, 1.0);
+
+    if (spos.z > -shadow_clip.w)
+    {
+        vec4 lpos;
+        vec4 near_split = shadow_clip*-0.75;
+        vec4 far_split = shadow_clip*-1.25;
+        vec4 transition_domain = near_split-far_split;
+        float weight = 0.0;
+
+        if (spos.z < near_split.z)
+        {
+            lpos = shadow_matrix[3]*spos;
+
+            float w = 1.0;
+            w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+            //w = clamp(w, 0.0, 1.0);
+            float contrib = pcfShadow(shadowMap3, norm, lpos, 1.0, pos_screen, light_dir)*w;
+            //if (contrib > 0)
+            {
+                shadow += contrib;
+                weight += w;
+            }
+            shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
+        }
+
+        if (spos.z < near_split.y && spos.z > far_split.z)
+        {
+            lpos = shadow_matrix[2]*spos;
+
+            float w = 1.0;
+            w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
+            w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
+            //w = clamp(w, 0.0, 1.0);
+            float contrib = pcfShadow(shadowMap2, norm, lpos, 1.0, pos_screen, light_dir)*w;
+            //if (contrib > 0)
+            {
+                shadow += contrib;
+                weight += w;
+            }
+        }
+
+        if (spos.z < near_split.x && spos.z > far_split.y)
+        {
+            lpos = shadow_matrix[1]*spos;
+
+            float w = 1.0;
+            w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
+            w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
+            //w = clamp(w, 0.0, 1.0);
+            float contrib = pcfShadow(shadowMap1, norm, lpos, 1.0, pos_screen, light_dir)*w;
+            //if (contrib > 0)
+            {
+                shadow += contrib;
+                weight += w;
+            }
+        }
+
+        if (spos.z > far_split.x)
+        {
+            lpos = shadow_matrix[0]*spos;
+
+            float w = 1.0;
+            w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
+            //w = clamp(w, 0.0, 1.0);
+            float contrib = pcfShadow(shadowMap0, norm, lpos, 1.0, pos_screen, light_dir)*w;
+            //if (contrib > 0)
+            {
+                shadow += contrib;
+                weight += w;
+            }
+        }
+
+        shadow /= weight;
+    }
+    else
+    {
+        return 1.0f; // lit beyond the far split...
+    }
+    //shadow = min(dp_directional_light,shadow);
+    return shadow;
+#else
+    return 1.0;
+#endif
+}
+
+float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
+{
+#if defined(SPOT_SHADOW)
+    float shadow = 0.0f;
+    pos += norm * spot_shadow_offset;
+
+    vec4 spos = vec4(pos,1.0);
+    if (spos.z > -shadow_clip.w)
+    {
+        vec4 lpos;
+
+        vec4 near_split = shadow_clip*-0.75;
+        vec4 far_split = shadow_clip*-1.25;
+        vec4 transition_domain = near_split-far_split;
+        float weight = 0.0;
+
+        {
+            float w = 1.0;
+            w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+
+            if (index == 0)
+            {
+                lpos = shadow_matrix[4]*spos;
+                shadow += pcfSpotShadow(shadowMap4, lpos, 0.8, spos.xy)*w;
+            }
+            else
+            {
+                lpos = shadow_matrix[5]*spos;
+                shadow += pcfSpotShadow(shadowMap5, lpos, 0.8, spos.xy)*w;
+            }
+            weight += w;
+            shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
+        }
+
+        shadow /= weight;
+    }
+    else
+    {
+        shadow = 1.0f;
+    }
+    return shadow;
+#else
+    return 1.0;
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/shadowV.glsl

@@ -0,0 +1,34 @@
+/**
+ * @file shadowV.glsl
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+
+void main()
+{
+    //transform vertex
+    gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
+}

indra/newview/app_settings/shaders/class1/deferred/skyF.glsl

@@ -0,0 +1,129 @@
+/**
+ * @file class1/deferred/skyF.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2005, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+// Inputs
+in vec3 vary_HazeColor;
+in float vary_LightNormPosDot;
+
+#ifdef HAS_HDRI
+in vec4 vary_position;
+in vec3 vary_rel_pos;
+uniform float sky_hdr_scale;
+uniform float hdri_split_screen;
+uniform mat3 env_mat;
+uniform sampler2D environmentMap;
+#endif
+
+uniform sampler2D rainbow_map;
+uniform sampler2D halo_map;
+
+uniform float moisture_level;
+uniform float droplet_radius;
+uniform float ice_level;
+
+out vec4 frag_data[4];
+
+vec3 srgb_to_linear(vec3 c);
+vec3 linear_to_srgb(vec3 c);
+
+#define PI 3.14159265
+
+/////////////////////////////////////////////////////////////////////////
+// The fragment shader for the sky
+/////////////////////////////////////////////////////////////////////////
+
+
+vec3 rainbow(float d)
+{
+    // 'Interesting' values of d are -0.75 .. -0.825, i.e. when view vec nearly opposite of sun vec
+    // Rainbox tex is mapped with REPEAT, so -.75 as tex coord is same as 0.25.  -0.825 -> 0.175. etc.
+    // SL-13629
+    // Unfortunately the texture is inverted, so we need to invert the y coord, but keep the 'interesting'
+    // part within the same 0.175..0.250 range, i.e. d = (1 - d) - 1.575
+    d         = clamp(-0.575 - d, 0.0, 1.0);
+
+    // With the colors in the lower 1/4 of the texture, inverting the coords leaves most of it inaccessible.
+    // So, we can stretch the texcoord above the colors (ie > 0.25) to fill the entire remaining coordinate
+    // space. This improves gradation, reduces banding within the rainbow interior. (1-0.25) / (0.425/0.25) = 4.2857
+    float interior_coord = max(0.0, d - 0.25) * 4.2857;
+    d = clamp(d, 0.0, 0.25) + interior_coord;
+
+    float rad = (droplet_radius - 5.0f) / 1024.0f;
+    return pow(texture(rainbow_map, vec2(rad+0.5, d)).rgb, vec3(1.8)) * moisture_level;
+}
+
+vec3 halo22(float d)
+{
+    d       = clamp(d, 0.1, 1.0);
+    float v = sqrt(clamp(1 - (d * d), 0, 1));
+    return texture(halo_map, vec2(0, v)).rgb * ice_level;
+}
+
+void main()
+{
+    vec3 color;
+#ifdef HAS_HDRI
+    vec3 frag_coord = vary_position.xyz/vary_position.w;
+    if (-frag_coord.x > ((1.0-hdri_split_screen)*2.0-1.0))
+    {
+        vec3 pos = normalize(vary_rel_pos);
+        pos = env_mat * pos;
+        vec2 texCoord = vec2(atan(pos.z, pos.x) + PI, acos(pos.y)) / vec2(2.0 * PI, PI);
+        color = textureLod(environmentMap, texCoord.xy, 0).rgb * sky_hdr_scale;
+        color = min(color, vec3(8192*8192*16)); // stupidly large value arrived at by binary search -- avoids framebuffer corruption from some HDRIs
+
+        frag_data[2] = vec4(0.0,0.0,0.0,GBUFFER_FLAG_HAS_HDRI);
+    }
+    else
+#endif
+    {
+        // Potential Fill-rate optimization.  Add cloud calculation
+        // back in and output alpha of 0 (so that alpha culling kills
+        // the fragment) if the sky wouldn't show up because the clouds
+        // are fully opaque.
+
+        color = vary_HazeColor;
+
+        float  rel_pos_lightnorm = vary_LightNormPosDot;
+        float optic_d = rel_pos_lightnorm;
+        vec3  halo_22 = halo22(optic_d);
+        color.rgb += rainbow(optic_d);
+        color.rgb += halo_22;
+        color.rgb *= 2.;
+        color.rgb = clamp(color.rgb, vec3(0), vec3(5));
+
+        frag_data[2] = vec4(0.0,0.0,0.0,GBUFFER_FLAG_SKIP_ATMOS);
+    }
+
+    frag_data[1] = vec4(0);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[0] = vec4(0);
+    frag_data[3] = vec4(color.rgb, 1.0);
+#else
+    frag_data[0] = vec4(color.rgb, 1.0);
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/skyV.glsl

@@ -0,0 +1,166 @@
+/**
+ * @file WLSkyV.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2005, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+
+// SKY ////////////////////////////////////////////////////////////////////////
+// The vertex shader for creating the atmospheric sky
+///////////////////////////////////////////////////////////////////////////////
+
+// Output parameters
+out vec3 vary_HazeColor;
+out float vary_LightNormPosDot;
+
+#ifdef HAS_HDRI
+out vec4 vary_position;
+out vec3 vary_rel_pos;
+#endif
+
+// Inputs
+uniform vec3 camPosLocal;
+
+uniform vec3  lightnorm;
+uniform vec3  sunlight_color;
+uniform vec3  moonlight_color;
+uniform int   sun_up_factor;
+uniform vec3  ambient_color;
+uniform vec3  blue_horizon;
+uniform vec3  blue_density;
+uniform float haze_horizon;
+uniform float haze_density;
+
+uniform float cloud_shadow;
+uniform float density_multiplier;
+uniform float distance_multiplier;
+uniform float max_y;
+
+uniform vec3  glow;
+uniform float sun_moon_glow_factor;
+
+uniform int cube_snapshot;
+
+// NOTE: Keep these in sync!
+//       indra\newview\app_settings\shaders\class1\deferred\skyV.glsl
+//       indra\newview\app_settings\shaders\class1\deferred\cloudsV.glsl
+//       indra\newview\lllegacyatmospherics.cpp
+void main()
+{
+    // World / view / projection
+    vec4 pos = modelview_projection_matrix * vec4(position.xyz, 1.0);
+
+    gl_Position = pos;
+
+    // Get relative position
+    vec3 rel_pos = position.xyz - camPosLocal.xyz + vec3(0, 50, 0);
+
+#ifdef HAS_HDRI
+    vary_rel_pos = rel_pos;
+    vary_position = pos;
+#endif
+
+    // Adj position vector to clamp altitude
+    if (rel_pos.y > 0.)
+    {
+        rel_pos *= (max_y / rel_pos.y);
+    }
+    if (rel_pos.y < 0.)
+    {
+        rel_pos *= (-32000. / rel_pos.y);
+    }
+
+    // Normalized
+    vec3  rel_pos_norm = normalize(rel_pos);
+    float rel_pos_len  = length(rel_pos);
+
+    // Grab this value and pass to frag shader for rainbows
+    float rel_pos_lightnorm_dot = dot(rel_pos_norm, lightnorm.xyz);
+    vary_LightNormPosDot = rel_pos_lightnorm_dot;
+
+    // Initialize temp variables
+    vec3 sunlight = (sun_up_factor == 1) ? sunlight_color : moonlight_color * 0.7; //magic 0.7 to match legacy color
+
+    // Sunlight attenuation effect (hue and brightness) due to atmosphere
+    // this is used later for sunlight modulation at various altitudes
+    vec3 light_atten = (blue_density + vec3(haze_density * 0.25)) * (density_multiplier * max_y);
+
+    // Calculate relative weights
+    vec3 combined_haze = max(abs(blue_density) + vec3(abs(haze_density)), vec3(1e-6));
+    vec3 blue_weight   = blue_density / combined_haze;
+    vec3 haze_weight   = haze_density / combined_haze;
+
+    // Compute sunlight from rel_pos & lightnorm (for long rays like sky)
+    float off_axis = 1.0 / max(1e-6, max(0., rel_pos_norm.y) + lightnorm.y);
+    sunlight *= exp(-light_atten * off_axis);
+
+    // Distance
+    float density_dist = rel_pos_len * density_multiplier;
+
+    // Transparency (-> combined_haze)
+    // ATI Bugfix -- can't store combined_haze*density_dist in a variable because the ati
+    // compiler gets confused.
+    combined_haze = exp(-combined_haze * density_dist);
+
+    // Compute haze glow
+    float haze_glow = 1.0 - rel_pos_lightnorm_dot;
+    // haze_glow is 0 at the sun and increases away from sun
+    haze_glow = max(haze_glow, .001);
+    // Set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot)
+    haze_glow *= glow.x;
+    // Higher glow.x gives dimmer glow (because next step is 1 / "angle")
+    haze_glow = pow(haze_glow, glow.z);
+    // glow.z should be negative, so we're doing a sort of (1 / "angle") function
+
+    // Add "minimum anti-solar illumination"
+    // For sun, add to glow.  For moon, remove glow entirely. SL-13768
+    haze_glow = (sun_moon_glow_factor < 1.0) ? 0.0 : (sun_moon_glow_factor * (haze_glow + 0.25));
+
+    // Haze color above cloud
+    vec3 color = (blue_horizon * blue_weight * (sunlight + ambient_color)
+               + (haze_horizon * haze_weight) * (sunlight * haze_glow + ambient_color));
+
+    // Final atmosphere additive
+    color *= (1. - combined_haze);
+
+    // Increase ambient when there are more clouds
+    vec3 ambient = ambient_color + max(vec3(0), (1. - ambient_color)) * cloud_shadow * 0.5;
+
+    // Dim sunlight by cloud shadow percentage
+    sunlight *= max(0.0, (1. - cloud_shadow));
+
+    // Haze color below cloud
+    vec3 add_below_cloud = (blue_horizon * blue_weight * (sunlight + ambient)
+                         + (haze_horizon * haze_weight) * (sunlight * haze_glow + ambient));
+
+    // Attenuate cloud color by atmosphere
+    combined_haze = sqrt(combined_haze);  // less atmos opacity (more transparency) below clouds
+
+    // At horizon, blend high altitude sky color towards the darker color below the clouds
+    color += (add_below_cloud - color) * (1. - sqrt(combined_haze));
+
+    // Haze color above cloud
+    vary_HazeColor = color;
+}

indra/newview/app_settings/shaders/class1/deferred/starsF.glsl

@@ -0,0 +1,71 @@
+/**
+ * @file starsF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+in vec4 vertex_color;
+in vec2 vary_texcoord0;
+in vec2 screenpos;
+
+uniform sampler2D diffuseMap;
+uniform float blend_factor;
+uniform float custom_alpha;
+uniform float time;
+
+float twinkle(){
+    float d = fract(screenpos.x + screenpos.y);
+    return abs(d);
+}
+
+// See:
+// ALM off: class1/environment/starsF.glsl
+// ALM on : class1/deferred/starsF.glsl
+void main()
+{
+    // camera above water: class1\deferred\starsF.glsl
+    // camera below water: class1\environment\starsF.glsl
+    vec4 col_a = texture(diffuseMap, vary_texcoord0.xy);
+    vec4 col_b = texture(diffuseMap, vary_texcoord0.xy);
+    vec4 col = mix(col_b, col_a, blend_factor);
+    col.rgb *= vertex_color.rgb;
+
+    float factor = smoothstep(0.0f, 0.9f, custom_alpha);
+
+    col.a = (col.a * factor) * 32.0f;
+    col.a *= twinkle();
+
+    frag_data[1] = vec4(0.0f);
+    frag_data[2] = vec4(0.0, 1.0, 0.0, GBUFFER_FLAG_SKIP_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[0] = vec4(0);
+    frag_data[3] = col;
+#else
+    frag_data[0] = col;
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/starsV.glsl

@@ -0,0 +1,54 @@
+/**
+ * @file starsV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_projection_matrix;
+uniform float time;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec2 texcoord0;
+
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
+out vec2 screenpos;
+
+void main()
+{
+    //transform vertex
+    vec4 pos = modelview_projection_matrix * vec4(position, 1.0);
+
+
+    // smash to far clip plane to
+    // avoid rendering on top of moon (do NOT write to gl_FragDepth, it's slow)
+    pos.z = pos.w;
+
+    gl_Position = pos;
+
+    float t = mod(time, 1.25f);
+    screenpos = position.xy * vec2(t, t);
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+    vertex_color = diffuse_color;
+}

indra/newview/app_settings/shaders/class1/deferred/sunDiscF.glsl

@@ -0,0 +1,58 @@
+/**
+ * @file sunDiscF.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2005, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+vec3 srgb_to_linear(vec3 c);
+
+uniform sampler2D diffuseMap;
+uniform sampler2D altDiffuseMap;
+uniform float blend_factor; // interp factor between sunDisc A/B
+in vec2 vary_texcoord0;
+in float sun_fade;
+
+void main()
+{
+    vec4 sunDiscA = texture(diffuseMap, vary_texcoord0.xy);
+    vec4 sunDiscB = texture(altDiffuseMap, vary_texcoord0.xy);
+    vec4 c     = mix(sunDiscA, sunDiscB, blend_factor);
+
+
+    // SL-9806 stars poke through
+    //c.a *= sun_fade;
+
+    frag_data[0] = vec4(0);
+    frag_data[1] = vec4(0.0f);
+    frag_data[2] = vec4(0.0, 1.0, 0.0, GBUFFER_FLAG_SKIP_ATMOS);
+#if defined(HAS_EMISSIVE)
+    frag_data[0] = vec4(0);
+    frag_data[3] = c;
+#else
+    frag_data[0] = c;
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/sunDiscV.glsl

@@ -0,0 +1,54 @@
+/**
+ * @file sunDiscV.glsl
+ *
+  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_matrix;
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+in vec2 texcoord0;
+
+out vec2 vary_texcoord0;
+out float sun_fade;
+
+void calcAtmospherics(vec3 eye_pos);
+
+void main()
+{
+    //transform vertex
+    vec3 offset = vec3(0, 0, 50);
+    vec4 vert = vec4(position.xyz - offset, 1.0);
+    vec4 pos  = modelview_projection_matrix*vert;
+
+    sun_fade = smoothstep(0.3, 1.0, (position.z + 50) / 512.0f);
+
+    // smash to *almost* far clip plane -- behind clouds but in front of stars
+    pos.z = pos.w*0.999999;
+    gl_Position = pos;
+
+    calcAtmospherics(pos.xyz);
+
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+}

indra/newview/app_settings/shaders/class1/deferred/terrainF.glsl

@@ -0,0 +1,70 @@
+/**
+ * @file class1\deferred\terrainF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_data[4];
+
+uniform sampler2D detail_0;
+uniform sampler2D detail_1;
+uniform sampler2D detail_2;
+uniform sampler2D detail_3;
+uniform sampler2D alpha_ramp;
+
+in vec3 pos;
+in vec3 vary_normal;
+in vec4 vary_texcoord0;
+in vec4 vary_texcoord1;
+
+void mirrorClip(vec3 position);
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag);
+
+void main()
+{
+    mirrorClip(pos);
+    /// Note: This should duplicate the blending functionality currently used for the terrain rendering.
+
+    vec4 color0 = texture(detail_0, vary_texcoord0.xy);
+    vec4 color1 = texture(detail_1, vary_texcoord0.xy);
+    vec4 color2 = texture(detail_2, vary_texcoord0.xy);
+    vec4 color3 = texture(detail_3, vary_texcoord0.xy);
+
+    float alpha1 = texture(alpha_ramp, vary_texcoord0.zw).a;
+    float alpha2 = texture(alpha_ramp,vary_texcoord1.xy).a;
+    float alphaFinal = texture(alpha_ramp, vary_texcoord1.zw).a;
+    vec4 outColor = mix( mix(color3, color2, alpha2), mix(color1, color0, alpha1), alphaFinal );
+
+    outColor.a = 0.0; // yes, downstream atmospherics
+
+    frag_data[0] = max(outColor, vec4(0));
+    frag_data[1] = vec4(0.0,0.0,0.0,-1.0);
+    vec3 nvn = normalize(vary_normal);
+    frag_data[2] = encodeNormal(nvn.xyz, 0, GBUFFER_FLAG_HAS_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = vec4(0);
+#endif
+}
+

indra/newview/app_settings/shaders/class1/deferred/terrainV.glsl

@@ -0,0 +1,77 @@
+/**
+ * @file class1\environment\terrainV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat3 normal_matrix;
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_matrix;
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+in vec3 normal;
+in vec4 diffuse_color;
+in vec2 texcoord1;
+
+out vec3 pos;
+out vec3 vary_normal;
+out vec4 vary_texcoord0;
+out vec4 vary_texcoord1;
+
+uniform vec4 object_plane_s;
+uniform vec4 object_plane_t;
+
+vec2 texgen_object(vec4 vpos, mat4 mat, vec4 tp0, vec4 tp1)
+{
+    vec4 tcoord;
+
+    tcoord.x = dot(vpos, tp0);
+    tcoord.y = dot(vpos, tp1);
+    tcoord.z = 0;
+    tcoord.w = 1;
+
+    tcoord = mat * tcoord;
+
+    return tcoord.xy;
+}
+
+void main()
+{
+    //transform vertex
+    vec4 pre_pos = vec4(position.xyz, 1.0);
+    vec4 t_pos = modelview_projection_matrix * pre_pos;
+
+    gl_Position = t_pos;
+    pos = (modelview_matrix*pre_pos).xyz;
+
+    vary_normal = normalize(normal_matrix * normal);
+
+    // Transform and pass tex coords
+    vary_texcoord0.xy = texgen_object(vec4(position, 1.0), texture_matrix0, object_plane_s, object_plane_t);
+
+    vec4 t = vec4(texcoord1,0,1);
+
+    vary_texcoord0.zw = t.xy;
+    vary_texcoord1.xy = t.xy-vec2(2.0, 0.0);
+    vary_texcoord1.zw = t.xy-vec2(1.0, 0.0);
+}

indra/newview/app_settings/shaders/class1/deferred/textureUtilV.glsl

@@ -0,0 +1,184 @@
+/**
+ * @file class1/deferred/textureUtilV.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+// This shader code is taken from the sample code on the KHR_texture_transform
+// spec page page, plus or minus some sign error corrections (I think because the GLSL
+// matrix constructor is backwards?):
+// https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0/Khronos/KHR_texture_transform
+// Previously (6494eed242b1), we passed in a single, precalculated matrix
+// uniform per transform into the shaders. However, that was found to produce
+// small-but-noticeable discrepancies with the GLTF sample model
+// "TextureTransformTest", likely due to numerical precision differences. In
+// the interest of parity with other renderers, calculate the transform
+// directly in the shader. -Cosmic,2023-02-24
+vec2 khr_texture_transform(vec2 texcoord, vec2 scale, float rotation, vec2 offset)
+{
+    mat3 scale_mat = mat3(scale.x,0,0, 0,scale.y,0, 0,0,1);
+    mat3 offset_mat = mat3(1,0,0, 0,1,0, offset.x, offset.y, 1);
+    mat3 rotation_mat = mat3(
+        cos(rotation),-sin(rotation), 0,
+        sin(rotation), cos(rotation), 0,
+                    0,             0, 1
+    );
+
+    mat3 transform = offset_mat * rotation_mat * scale_mat;
+
+    return (transform * vec3(texcoord, 1)).xy;
+}
+
+// A texture transform function for PBR materials applied to shape prims/Collada model prims
+// vertex_texcoord - The UV texture coordinates sampled from the vertex at
+//     runtime. Per SL convention, this is in a right-handed UV coordinate
+//     system. Collada models also have right-handed UVs.
+// khr_gltf_transform - The texture transform matrix as defined in the
+//     KHR_texture_transform GLTF extension spec. It assumes a left-handed UV
+//     coordinate system. GLTF models also have left-handed UVs.
+// sl_animation_transform - The texture transform matrix for texture
+//     animations, available through LSL script functions such as
+//     LlSetTextureAnim. It assumes a right-handed UV coordinate system.
+// texcoord - The final texcoord to use for image sampling
+vec2 texture_transform(vec2 vertex_texcoord, vec4[2] khr_gltf_transform, mat4 sl_animation_transform)
+{
+    vec2 texcoord = vertex_texcoord;
+
+    // Apply texture animation first to avoid shearing and other artifacts
+    texcoord = (sl_animation_transform * vec4(texcoord, 0, 1)).xy;
+    // Convert to left-handed coordinate system. The offset of 1 is necessary
+    // for rotation and scale to be applied correctly.
+    texcoord.y = 1.0 - texcoord.y;
+    texcoord = khr_texture_transform(texcoord, khr_gltf_transform[0].xy, khr_gltf_transform[0].z, khr_gltf_transform[1].xy);
+    // Convert back to right-handed coordinate system
+    texcoord.y = 1.0 - texcoord.y;
+
+    // To make things more confusing, all SL image assets are upside-down
+    // We may need an additional sign flip here when we implement a Vulkan backend
+
+    return texcoord;
+}
+
+// Similar to texture_transform but no offset during coordinate system
+// conversion, and no texture animation support.
+vec2 terrain_texture_transform(vec2 vertex_texcoord, vec4[2] khr_gltf_transform)
+{
+    vec2 texcoord = vertex_texcoord;
+
+    texcoord.y = -texcoord.y;
+    texcoord = khr_texture_transform(texcoord, khr_gltf_transform[0].xy, khr_gltf_transform[0].z, khr_gltf_transform[1].xy);
+    texcoord.y = -texcoord.y;
+
+    return texcoord;
+}
+
+// Take the rotation only from both transforms and apply to the tangent. This
+// accounts for the change of the topology of the normal texture when a texture
+// rotation is applied to it.
+// In practice, this applies the inverse of the texture transform to the tangent.
+// It is effectively an inverse of the rotation
+// *HACK: Assume the imported GLTF model did not have both normal texture
+// transforms and tangent vertices. The use of this function is inconsistent
+// with the GLTF sample viewer when that is the case. See getNormalInfo in
+// https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Viewer/47a191931461a6f2e14de48d6da0f0eb6ec2d147/source/Renderer/shaders/material_info.glsl
+// We may want to account for this case during GLTF model import.
+// -Cosmic,2023-06-06
+vec4 tangent_space_transform(vec4 vertex_tangent, vec3 vertex_normal, vec4[2] khr_gltf_transform, mat4 sl_animation_transform)
+{
+    // Immediately convert to left-handed coordinate system, but it has no
+    // effect here because y is 0 ((1,0) -> (1,0))
+    vec2 weights = vec2(1, 0);
+
+    // Apply inverse KHR_texture_transform (rotation and scale sign only)
+    float khr_rotation = -khr_gltf_transform[0].z;
+    mat2 khr_rotation_mat = mat2(
+        cos(khr_rotation),-sin(khr_rotation),
+        sin(khr_rotation), cos(khr_rotation)
+    );
+    weights = khr_rotation_mat * weights;
+    vec2 khr_scale_sign = sign(khr_gltf_transform[0].xy);
+    weights *= khr_scale_sign.xy;
+
+    // *NOTE: Delay conversion to right-handed coordinate system here, to
+    // remove the need for computing the inverse of the SL texture animation
+    // matrix.
+
+    // Apply texture animation last to avoid shearing and other artifacts (rotation only)
+    mat2 inv_sl_rot_scale;
+    inv_sl_rot_scale[0][0] = sl_animation_transform[0][0];
+    inv_sl_rot_scale[0][1] = sl_animation_transform[0][1];
+    inv_sl_rot_scale[1][0] = sl_animation_transform[1][0];
+    inv_sl_rot_scale[1][1] = sl_animation_transform[1][1];
+    weights = inv_sl_rot_scale * weights;
+    // *NOTE: Scale to be removed later
+
+    // Set weights to default if 0 for some reason
+    weights.x += 1.0 - abs(sign(sign(weights.x) + (0.5 * sign(weights.y))));
+
+    // Remove scale from SL texture animation transform
+    weights = normalize(weights);
+
+    // Convert back to right-handed coordinate system
+    weights.y = -weights.y;
+
+    // Similar to the MikkTSpace-compatible method of extracting the binormal
+    // from the normal and tangent, as seen in the fragment shader
+    vec3 vertex_binormal = vertex_tangent.w * cross(vertex_normal, vertex_tangent.xyz);
+
+    // An additional sign flip prevents the binormal from being flipped as a
+    // result of a propagation of the tangent sign during the cross product.
+    float sign_flip = khr_scale_sign.x * khr_scale_sign.y;
+    return vec4((weights.x * vertex_tangent.xyz) + (weights.y * vertex_binormal.xyz), vertex_tangent.w * sign_flip);
+}
+
+// Similar to tangent_space_transform but no texture animation support.
+vec4 terrain_tangent_space_transform(vec4 vertex_tangent, vec3 vertex_normal, vec4[2] khr_gltf_transform)
+{
+    // Immediately convert to left-handed coordinate system, but it has no
+    // effect here because y is 0 ((1,0) -> (1,0))
+    vec2 weights = vec2(1, 0);
+
+    // Apply inverse KHR_texture_transform (rotation and scale sign only)
+    float khr_rotation = -khr_gltf_transform[0].z;
+    mat2 khr_rotation_mat = mat2(
+        cos(khr_rotation),-sin(khr_rotation),
+        sin(khr_rotation), cos(khr_rotation)
+    );
+    weights = khr_rotation_mat * weights;
+    vec2 khr_scale_sign = sign(khr_gltf_transform[0].xy);
+    weights *= khr_scale_sign.xy;
+
+    // Set weights to default if 0 for some reason
+    weights.x += 1.0 - abs(sign(sign(weights.x) + (0.5 * sign(weights.y))));
+
+    // Convert back to right-handed coordinate system
+    weights.y = -weights.y;
+
+    // Similar to the MikkTSpace-compatible method of extracting the binormal
+    // from the normal and tangent, as seen in the fragment shader
+    vec3 vertex_binormal = vertex_tangent.w * cross(vertex_normal, vertex_tangent.xyz);
+
+    // An additional sign flip prevents the binormal from being flipped as a
+    // result of a propagation of the tangent sign during the cross product.
+    float sign_flip = khr_scale_sign.x * khr_scale_sign.y;
+    return vec4((weights.x * vertex_tangent.xyz) + (weights.y * vertex_binormal.xyz), vertex_tangent.w * sign_flip);
+}

indra/newview/app_settings/shaders/class1/deferred/tonemapUtilF.glsl

@@ -0,0 +1,180 @@
+/**
+ * @file postDeferredTonemap.glsl
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+uniform sampler2D exposureMap;
+uniform vec2 screen_res;
+in vec2 vary_fragcoord;
+
+//===============================================================
+// tone mapping taken from Khronos sample implementation
+//===============================================================
+
+// sRGB => XYZ => D65_2_D60 => AP1 => RRT_SAT
+const mat3 ACESInputMat = mat3
+(
+    0.59719, 0.07600, 0.02840,
+    0.35458, 0.90834, 0.13383,
+    0.04823, 0.01566, 0.83777
+);
+
+
+// ODT_SAT => XYZ => D60_2_D65 => sRGB
+const mat3 ACESOutputMat = mat3
+(
+    1.60475, -0.10208, -0.00327,
+    -0.53108,  1.10813, -0.07276,
+    -0.07367, -0.00605,  1.07602
+);
+
+// ACES tone map (faster approximation)
+// see: https://knarkowicz.wordpress.com/2016/01/06/aces-filmic-tone-mapping-curve/
+vec3 toneMapACES_Narkowicz(vec3 color)
+{
+    const float A = 2.51;
+    const float B = 0.03;
+    const float C = 2.43;
+    const float D = 0.59;
+    const float E = 0.14;
+    return clamp((color * (A * color + B)) / (color * (C * color + D) + E), 0.0, 1.0);
+}
+
+
+// ACES filmic tone map approximation
+// see https://github.com/TheRealMJP/BakingLab/blob/master/BakingLab/ACES.hlsl
+vec3 RRTAndODTFit(vec3 color)
+{
+    vec3 a = color * (color + 0.0245786) - 0.000090537;
+    vec3 b = color * (0.983729 * color + 0.4329510) + 0.238081;
+    return a / b;
+}
+
+
+// tone mapping
+vec3 toneMapACES_Hill(vec3 color)
+{
+    color = ACESInputMat * color;
+
+    // Apply RRT and ODT
+    color = RRTAndODTFit(color);
+
+    color = ACESOutputMat * color;
+
+    // Clamp to [0, 1]
+    color = clamp(color, 0.0, 1.0);
+
+    return color;
+}
+
+// Khronos Neutral tonemapping
+// https://github.com/KhronosGroup/ToneMapping/tree/main
+// Input color is non-negative and resides in the Linear Rec. 709 color space.
+// Output color is also Linear Rec. 709, but in the [0, 1] range.
+vec3 PBRNeutralToneMapping( vec3 color )
+{
+  const float startCompression = 0.8 - 0.04;
+  const float desaturation = 0.15;
+
+  float x = min(color.r, min(color.g, color.b));
+  float offset = x < 0.08 ? x - 6.25 * x * x : 0.04;
+  color -= offset;
+
+  float peak = max(color.r, max(color.g, color.b));
+  if (peak < startCompression) return color;
+
+  const float d = 1. - startCompression;
+  float newPeak = 1. - d * d / (peak + d - startCompression);
+  color *= newPeak / peak;
+
+  float g = 1. - 1. / (desaturation * (peak - newPeak) + 1.);
+  return mix(color, newPeak * vec3(1, 1, 1), g);
+}
+
+uniform float exposure;
+uniform float tonemap_mix;
+uniform int tonemap_type;
+
+vec3 toneMap(vec3 color)
+{
+#ifndef NO_POST
+    float exp_scale = texture(exposureMap, vec2(0.5,0.5)).r;
+
+    color *= exposure * exp_scale;
+
+    vec3 clamped_color = clamp(color.rgb, vec3(0.0), vec3(1.0));
+
+    switch(tonemap_type)
+    {
+    case 0:
+        color = PBRNeutralToneMapping(color);
+        break;
+    case 1:
+        color = toneMapACES_Hill(color);
+        break;
+    }
+
+    // mix tonemapped and linear here to provide adjustment
+    color = mix(clamped_color, color, tonemap_mix);
+#endif
+
+    return color;
+}
+
+
+vec3 toneMapNoExposure(vec3 color)
+{
+#ifndef NO_POST
+    vec3 clamped_color = clamp(color.rgb, vec3(0.0), vec3(1.0));
+
+    switch(tonemap_type)
+    {
+    case 0:
+        color = PBRNeutralToneMapping(color);
+        break;
+    case 1:
+        color = toneMapACES_Hill(color);
+        break;
+    }
+
+    // mix tonemapped and linear here to provide adjustment
+    color = mix(clamped_color, color, tonemap_mix);
+#endif
+
+    return color;
+}
+
+
+//===============================================================
+
+void debugExposure(inout vec3 color)
+{
+    float exp_scale = texture(exposureMap, vec2(0.5,0.5)).r;
+    exp_scale *= 0.5;
+    if (abs(vary_fragcoord.y-exp_scale) < 0.01 && vary_fragcoord.x < 0.1)
+    {
+        color = vec3(1,0,0);
+    }
+}