shaders/terrain_fast.fs

   1 uniform sampler2D uTexGarbage;
   2 uniform sampler2D uTexGradients;
   3 uniform vec3 uCamera;
   4 uniform vec3 uSandColour;
   5 uniform vec2 uBlendOffset;
   6
   7 in vec4 aColour;
   8 in vec2 aUv;
   9 in vec3 aNorm;
  10 in vec3 aCo;
  11 in vec3 aWorldCo;
  12
  13 #include "common_world.glsl"
  14 #include "motion_vectors_fs.glsl"
  15
  16 void main()
  17 {
  18    compute_motion_vectors();
  19
  20    // Colour
  21    // ------
  22    vec3 vfrag = vec3(0.5,0.5,0.5);
  23
  24    // Colour blending
  25    float amtgrass = step(aNorm.y,0.6);
  26    float amtsand = min(max((aCo.y - 10.0) * -0.1,0.0)*aNorm.y,1.0);
  27    vec2 uvgradients = aUv + vec2( amtgrass )*uBlendOffset;
  28    vfrag = texture( uTexGradients, uvgradients ).rgb;
  29    vfrag = mix( vfrag, uSandColour, amtsand );
  30
  31    if( g_light_preview == 1 )
  32    {
  33       vfrag = vec3(0.5);
  34    }
  35
  36    // Lighting
  37    vec3 halfview = uCamera - aCo;
  38    float fdist = length( halfview );
  39    halfview /= fdist;
  40
  41    vfrag = do_light_diffuse( vfrag, aNorm );
  42    vfrag = do_light_spec( vfrag, aNorm, halfview, 0.1 );
  43    vfrag = do_light_shadowing( vfrag );
  44    vfrag = apply_fog( vfrag, fdist );
  45
  46    oColour = vec4(vfrag, 1.0 );
  47 }