shaders/model_sky.fs

   1 layout (location = 0) out vec4 oColour;
   2
   3 uniform vec4 uColour;
   4 uniform sampler2D uTexGarbage;
   5 uniform float uTime;
   6
   7 in vec4 aColour;
   8 in vec2 aUv;
   9 in vec3 aNorm;
  10 in vec3 aCo;
  11
  12 #include "motion_vectors_fs.glsl"
  13
  14 void main()
  15 {
  16    compute_motion_vectors();
  17
  18    float fintensity = 1.0-(abs(aNorm.y)*0.7);
  19    float fblend = pow(fintensity,4.0);
  20    vec3 horizon = vec3( 0.8, 0.9, 0.9 );
  21    vec3 skycolour = vec3( 0.5, 0.6, 0.9 );
  22    vec3 diffuse = mix( skycolour, horizon, fblend );
  23
  24    float fmove = uTime * 0.004;
  25    vec2 cloudplane = (aNorm.xz / (aNorm.y*sign(aNorm.y))) * 0.05;
  26    vec4 clouds1 = texture( uTexGarbage, cloudplane + vec2(0.1,0.4)*fmove*2.0 );
  27    vec4 clouds2 = texture( uTexGarbage, cloudplane + vec2(0.3,0.1)*fmove );
  28
  29    float cloud_d = max(clouds1.b*clouds2.r -0.2 - clouds2.g*0.4,0.0);
  30    float cloud_e = pow(cloud_d,1.5)*pow(abs(aNorm.y),0.3)*2.0;
  31
  32    vec3 colour_ocean = vec3( 0.61, 0.84, 0.9 );
  33    float fhorizon = step( aNorm.y * 0.5 + 0.5, 0.5 );
  34
  35    vec3 skycomp = mix(diffuse, vec3(1.0,1.0,1.0), cloud_e);
  36    oColour = vec4(pow(skycomp, vec3(1.5)),1.0);
  37 }