shaders/scene_route.fs

   1 uniform sampler2D uTexGarbage;
   2 uniform sampler2D uTexGradients;
   3 uniform vec3 uCamera;
   4 uniform vec4 uColour;
   5
   6 #include "common_scene.glsl"
   7 #include "motion_vectors_fs.glsl"
   8
   9 float filtered_stripe( in float p, in float ddx, in float ddy )
  10 {
  11    float w = max(abs(ddx), abs(ddy)) + 0.02;
  12    float i = (abs(fract((p-0.5*w)/2.0)-0.5)-abs(fract((p+0.5*w)/2.0)-0.5))/w;
  13    return 0.5 - i;
  14 }
  15
  16 void main()
  17 {
  18    compute_motion_vectors();
  19
  20    vec3 vfrag = vec3(0.5,0.5,0.5);
  21
  22    // ws modulation
  23    vec4 wgarbage = texture( uTexGarbage, aCo.xz * 0.015 );
  24
  25    // Creating normal patches
  26    vec3 modnorm = (wgarbage.rgb-0.4) * 1.4;
  27    vec3 qnorm = normalize(floor(aNorm.xyz*4.0+modnorm)*0.25);
  28    qnorm += vec3(0.001,0.0,0.0);
  29
  30    vec3 tangent0 = normalize(cross(qnorm,vec3(0.0,1.0,0.0)));
  31    vec3 tangent1 = cross(qnorm,tangent0);
  32    vec2 uvdiffuse = vec2( dot(tangent0,aCo), dot(tangent1,aCo) ) * 0.035;
  33
  34    // Patch local noise
  35    vec4 rgarbage = texture( uTexGarbage, uvdiffuse );
  36
  37    vfrag = pow(uColour.rgb,vec3(1.0/2.2));
  38    vfrag -= rgarbage.a*0.1;
  39
  40    if( wgarbage.g < 0.1 )
  41       discard;
  42
  43    float movep = (aUv.x + abs(aUv.y-0.5)*0.4 - g_realtime)*2.0;
  44    float stripe = filtered_stripe( movep, dFdx(movep), dFdy(movep) );
  45    vfrag *= 0.9+stripe*uColour.a;
  46
  47    if( g_light_preview == 1 )
  48    {
  49       vfrag = vec3(0.5);
  50    }
  51
  52    // Lighting
  53    oColour = vec4( scene_compute_lighting( vfrag, qnorm, aWorldCo ), 1.0 );
  54 }