client/shaders/second_stage/opengl_vertex.glsl

   1 #define exposureMap texture2
   2
   3 uniform sampler2D exposureMap;
   4
   5 #ifdef GL_ES
   6 varying mediump vec2 varTexCoord;
   7 #else
   8 centroid varying vec2 varTexCoord;
   9 #endif
  10
  11 varying float exposure;
  12
  13 void main(void)
  14 {
  15 #ifdef ENABLE_AUTO_EXPOSURE
  16         exposure = texture2D(exposureMap, vec2(0.5)).r;
  17         exposure = pow(2., exposure);
  18 #else
  19         exposure = 1.0;
  20 #endif
  21
  22         varTexCoord.st = inTexCoord0.st;
  23         gl_Position = inVertexPosition;
  24 }