shaders/model_sky.fs

   1 uniform sampler2D uTexGarbage;
   2
   3 in vec4 aColour;
   4 in vec2 aUv;
   5 in vec3 aNorm;
   6 in vec3 aCo;
   7 in vec3 aWorldCo;
   8
   9 // Spooky!
  10 const vec3 uCamera = vec3(0.0);
  11
  12 #include "common_world.glsl"
  13 #include "motion_vectors_fs.glsl"
  14
  15 void main()
  16 {
  17    compute_motion_vectors();
  18
  19    vec3 rd = normalize(aNorm);
  20
  21    float fmove = g_time * 5.0;
  22    vec2 cloudplane = (rd.xz / (rd.y*sign(rd.y))) * 0.025;
  23    vec4 clouds1 = texture( uTexGarbage, cloudplane + vec2(0.1,0.4)*fmove*2.0 );
  24    vec4 clouds2 = texture( uTexGarbage, cloudplane*2.0 + vec2(0.3,0.1)*fmove );
  25
  26    float cloud_d = max(clouds1.b*clouds2.r -0.2 - clouds2.g*0.4,0.0);
  27    float cloud_e = pow(cloud_d,1.5)*pow(abs(rd.y),0.3)*2.0;
  28
  29    oColour = vec4( clearskies_sky( -rd ) ,1.0);
  30
  31    vec3 cloud_colour = mix( mix(g_nightsky_colour.rgb,vec3(1.0),g_day_phase),
  32                                 g_sunset_colour.rgb, g_sunset_phase );
  33
  34    oColour.rgb = mix( oColour.rgb, cloud_colour, cloud_e );
  35 }