shaders/cloud.fs

   1 out vec4 FragColor;
   2
   3 #include "motion_vectors_fs.glsl"
   4
   5 uniform vec3 uCamera;
   6
   7 in vec4 aColour;
   8 in vec3 aNorm;
   9 in vec3 aCo;
  10 in vec3 aWorldCo;
  11
  12 void main()
  13 {
  14    vec2 ssuv = gl_FragCoord.xy;
  15    vec3 vDither = vec3( dot( vec2( 171.0, 231.0 ), ssuv) );
  16    float dither = fract( vDither.g / 71.0 ) - 0.5;
  17
  18    float diff = length(gl_PointCoord.xy-vec2(0.5));
  19    if( diff+dither>0.5 )
  20       discard;
  21
  22    compute_motion_vectors();
  23    FragColor = aColour;
  24 }