shaders/vblend.fs

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