shaders/scene_terrain.fs

   1 uniform sampler2D uTexGarbage;
   2 uniform sampler2D uTexGradients;
   3 uniform vec3 uCamera;
   4 uniform vec3 uSandColour;
   5 uniform vec2 uBlendOffset;
   6 uniform vec3 uBoard0;
   7 uniform vec3 uBoard1;
   8
   9 #include "common_scene.glsl"
  10 #include "motion_vectors_fs.glsl"
  11
  12 void main()
  13 {
  14    compute_motion_vectors();
  15
  16    // Colour
  17    // ------
  18    vec3 vfrag = vec3(0.5,0.5,0.5);
  19
  20    // ws modulation
  21    vec4 wgarbage = texture( uTexGarbage, aCo.xz * 0.015 );
  22
  23    // Creating normal patches
  24    vec3 modnorm = (wgarbage.rgb-0.4) * 1.4;
  25    vec3 qnorm = normalize(floor(aNorm.xyz*4.0+modnorm)*0.25);
  26    qnorm += vec3(0.001,0.0,0.0);
  27
  28    vec2 dir = normalize(qnorm.xz);
  29    vec2 uvdiffuse = aCo.xz * 0.02;
  30    uvdiffuse = mat2(dir.y, dir.x, -dir.x, dir.y) * uvdiffuse;
  31
  32    // Patch local noise
  33    vec4 rgarbage = texture( uTexGarbage, uvdiffuse );
  34
  35    // Colour blending
  36    float amtgrass = step(qnorm.y,0.6);
  37    float amtsand = min(max((aCo.y - 10.0) * -0.1,0.0)*qnorm.y,1.0);
  38    vec2 uvgradients = aUv + vec2( amtgrass + rgarbage.a*0.8 )*uBlendOffset;
  39    vfrag = texture( uTexGradients, uvgradients ).rgb;
  40    vfrag = mix( vfrag, uSandColour, amtsand );
  41
  42    qnorm = mix( qnorm, aNorm.xyz, amtsand );
  43
  44    if( g_light_preview == 1 )
  45    {
  46       vfrag = vec3(0.5);
  47    }
  48
  49    vfrag = scene_do_lighting( vfrag, qnorm );
  50    oColour = vec4(vfrag, 1.0);
  51 }