tests/shaders/glsl-vs-functions.vert

   1 uniform vec4 args1;
   2
   3 /* In order to make the Mesa compiler not inline the function calls, have
   4  * return statements inside of branches.
   5  */
   6 float f1(float f)
   7 {
   8         if (f > 0.5)
   9                 return 1.0;
  10         else
  11                 return 0.0;
  12 }
  13
  14 float f2(float f)
  15 {
  16         if (f < 0.5)
  17                 return 1.0;
  18         else
  19                 return 0.0;
  20 }
  21
  22 void main()
  23 {
  24         gl_FrontColor = vec4(f1(args1.x),
  25                              f1(args1.y),
  26                              f2(args1.z),
  27                              f2(args1.w));
  28         gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
  29 }
  30