Apertura del repositorio

indra/newview/app_settings/shaders/class1/environment/waterV.glsl

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+/**
+ * @file class1\environment\waterV.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 modelview_projection_matrix;
+
+in vec3 position;
+
+
+void calcAtmospherics(vec3 inPositionEye);
+
+uniform vec2 waveDir1;
+uniform vec2 waveDir2;
+uniform float time;
+uniform vec3 eyeVec;
+uniform float waterHeight;
+uniform vec3 lightDir;
+
+out vec4 refCoord;
+out vec4 littleWave;
+out vec4 view;
+out vec3 vary_position;
+out vec3 vary_light_dir;
+out vec3 vary_tangent;
+out vec3 vary_normal;
+out vec2 vary_fragcoord;
+
+float wave(vec2 v, float t, float f, vec2 d, float s)
+{
+   return (dot(d, v)*f + t*s)*f;
+}
+
+void main()
+{
+    //transform vertex
+    vec4 pos = vec4(position.xyz, 1.0);
+    mat4 modelViewProj = modelview_projection_matrix;
+
+    vary_position = (modelview_matrix * pos).xyz;
+    vary_light_dir = normal_matrix * lightDir;
+    vary_normal = normal_matrix * vec3(0, 0, 1);
+    vary_tangent = normal_matrix * vec3(1, 0, 0);
+
+    vec4 oPosition;
+
+    //get view vector
+    vec3 oEyeVec;
+    oEyeVec.xyz = pos.xyz-eyeVec;
+
+    float d = length(oEyeVec.xy);
+    float ld = min(d, 2560.0);
+
+    pos.xy = eyeVec.xy + oEyeVec.xy/d*ld;
+    view.xyz = oEyeVec;
+
+    d = clamp(ld/1536.0-0.5, 0.0, 1.0);
+    d *= d;
+
+    oPosition = vec4(position, 1.0);
+//  oPosition.z = mix(oPosition.z, max(eyeVec.z*0.75, 0.0), d); // SL-11589 remove "U" shaped horizon
+
+    oPosition = modelViewProj * oPosition;
+
+    refCoord.xyz = oPosition.xyz + vec3(0,0,0.2);
+
+    //get wave position parameter (create sweeping horizontal waves)
+    vec3 v = pos.xyz;
+    v.x += (cos(v.x*0.08/*+time*0.01*/)+sin(v.y*0.02))*6.0;
+
+    //push position for further horizon effect.
+    pos.xyz = oEyeVec.xyz*(waterHeight/oEyeVec.z);
+    pos.w = 1.0;
+    pos = modelview_matrix*pos;
+
+    calcAtmospherics(pos.xyz);
+
+    //pass wave parameters to pixel shader
+    vec2 bigWave =  (v.xy) * vec2(0.04,0.04)  + waveDir1 * time * 0.055;
+    //get two normal map (detail map) texture coordinates
+    littleWave.xy = (v.xy) * vec2(0.45, 0.9)   + waveDir2 * time * 0.13;
+    littleWave.zw = (v.xy) * vec2(0.1, 0.2) + waveDir1 * time * 0.1;
+    view.w = bigWave.y;
+    refCoord.w = bigWave.x;
+
+    gl_Position = oPosition;
+}