shaders/vblend.fs

   1 out vec4 FragColor;
   2
   3 uniform sampler2D uTexGarbage;
   4 uniform sampler2D uTexGradients;
   5 uniform vec3 uCamera;
   6 uniform vec4 uPlane;
   7
   8 in vec4 aColour;
   9 in vec2 aUv;
  10 in vec3 aNorm;
  11 in vec3 aCo;
  12 in vec3 aWorldCo;
  13
  14 #include "common_world.glsl"
  15
  16 void main()
  17 {
  18    vec3 vfrag = vec3(0.5,0.5,0.5);
  19
  20    // ws modulation
  21    vec4 wgarbage = texture( uTexGarbage, aCo.xz * 0.160 );
  22
  23    // Creating normal patches
  24    vec3 modnorm = (wgarbage.rgb-0.4) * 1.4;
  25    vec3 qnorm = normalize(floor(aNorm*4.0+modnorm)*0.25) + vec3(0.001,0.0,0.0);
  26
  27    vec3 tangent0 = normalize(cross(qnorm,vec3(0.0,1.0,0.0)));
  28    vec3 tangent1 = cross(qnorm,tangent0);
  29    vec2 uvdiffuse = vec2( dot(tangent0,aCo), dot(tangent1,aCo) ) * 0.160;
  30
  31    // Patch local noise
  32    vec4 rgarbage = texture( uTexGarbage, uvdiffuse );
  33
  34    // Colour blending
  35    float fblendclip = step(0.380,aColour.r + (rgarbage.r-0.5)*-1.740)*0.320;
  36    vec2 uvgradients = aUv + vec2( fblendclip, 0.0 );
  37
  38    vfrag = texture( uTexGradients, uvgradients ).rgb;
  39    vfrag -= rgarbage.a*0.04;
  40
  41    if( g_light_preview == 1 )
  42    {
  43       vfrag = vec3(0.5);
  44    }
  45
  46    // Lighting
  47    vec3 halfview = uCamera - aWorldCo;
  48    float fdist = length( halfview );
  49    halfview /= fdist;
  50
  51    vfrag = do_light_diffuse( vfrag, qnorm );
  52    vfrag = do_light_spec( vfrag, qnorm, halfview, 0.1 );
  53    vfrag = do_light_shadowing( vfrag );
  54    vfrag = apply_fog( vfrag, fdist );
  55
  56    FragColor = vec4(vfrag, 1.0 );
  57 }