Index: conformance/ogles/GL/faceforward/faceforward_vec3_frag_nvaryiconst.frag |
=================================================================== |
--- conformance/ogles/GL/faceforward/faceforward_vec3_frag_nvaryiconst.frag (revision 0) |
+++ conformance/ogles/GL/faceforward/faceforward_vec3_frag_nvaryiconst.frag (working copy) |
@@ -0,0 +1,47 @@ |
+ |
+/* |
+** Copyright (c) 2012 The Khronos Group Inc. |
+** |
+** Permission is hereby granted, free of charge, to any person obtaining a |
+** copy of this software and/or associated documentation files (the |
+** "Materials"), to deal in the Materials without restriction, including |
+** without limitation the rights to use, copy, modify, merge, publish, |
+** distribute, sublicense, and/or sell copies of the Materials, and to |
+** permit persons to whom the Materials are 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 Materials. |
+** |
+** THE MATERIALS ARE 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 |
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
+*/ |
+ |
+ |
+#ifdef GL_ES |
+precision mediump float; |
+#endif |
+varying vec4 color; |
+ |
+void main (void) |
+{ |
+ const float M_PI = 3.14159265358979323846; |
+ |
+ // Both are unit vectors |
+ vec3 v1; |
+ vec3 v2 = normalize(vec3(1.0, 1.0, 1.0)); |
+ |
+ |
+ float theta = color.g * 2.0 * M_PI; |
+ float phi = color.b * 2.0 * M_PI; |
+ v1.x = cos(theta) * sin(phi); |
+ v1.y = sin(theta) * sin(phi); |
+ v1.z = cos(phi); |
+ |
+ gl_FragColor = vec4((faceforward(v1, v2, v1) + 1.0) / 2.0, 1.0); |
+} |