Apertura del repositorio

indra/newview/app_settings/shaders/class1/interface/twotexturecompareF.glsl

@@ -0,0 +1,54 @@
+/**
+ * @file twotexturecompareF.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_color;
+
+uniform sampler2D tex0;
+uniform sampler2D tex1;
+uniform sampler2D dither_tex;
+uniform float dither_scale;
+uniform float dither_scale_s;
+uniform float dither_scale_t;
+
+in vec2 vary_texcoord0;
+in vec2 vary_texcoord1;
+
+void main()
+{
+    frag_color = abs(texture(tex0, vary_texcoord0.xy) - texture(tex1, vary_texcoord0.xy));
+
+    vec2 dither_coord;
+    dither_coord[0] = vary_texcoord0[0] * dither_scale_s;
+    dither_coord[1] = vary_texcoord0[1] * dither_scale_t;
+    vec4 dither_vec = texture(dither_tex, dither_coord.xy);
+
+    for(int i = 0; i < 3; i++)
+    {
+        if(frag_color[i] < dither_vec[i] * dither_scale)
+        {
+            frag_color[i] = 0.f;
+        }
+    }
+}