1 2/* 3** Copyright (c) 2012 The Khronos Group Inc. 4** 5** Permission is hereby granted, free of charge, to any person obtaining a 6** copy of this software and/or associated documentation files (the 7** "Materials"), to deal in the Materials without restriction, including 8** without limitation the rights to use, copy, modify, merge, publish, 9** distribute, sublicense, and/or sell copies of the Materials, and to 10** permit persons to whom the Materials are furnished to do so, subject to 11** the following conditions: 12** 13** The above copyright notice and this permission notice shall be included 14** in all copies or substantial portions of the Materials. 15** 16** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 17** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 18** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 19** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 20** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 21** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 22** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. 23*/ 24 25 26attribute vec4 gtf_Vertex; 27uniform mat4 gtf_ModelViewProjectionMatrix; 28varying vec4 color; 29 30void main (void) 31{ 32 int m = +23; 33 int k = -m; 34 bool a = false; 35 bool b = !a; 36 float gray; 37 if( (m==23) && (k==-23) && (b) ) 38 gray=1.0; 39 else gray=0.0; 40 color = vec4(gray, gray, gray, 1.0); 41 gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex; 42} 43