bake_radiosity.sl

[index]

22th February 2009   6:2pm 56sec
/stuhome/vsfx419/shaders/bake_radiosity.sl

pTbase_radio

surface
    bake_radiosity(string bakefile = "", 
                    displaychannels = "", 
                    texturename = "";
                   float Ka = 1, Kd = 1)
    {
      color irrad, tex = 1, diffcolor;
      normal Nn = normalize(N);
      float a = area(P, "dicing"); // micropolygon area (is 0 on e.g. curves)
  
      // Compute direct illumination (ambient and diffuse)
      irrad = Ka*ambient() + Kd*diffuse(Nn);
  
      // Lookup diffuse texture (if any)
      if (texturename != "")
        tex = texture(texturename);
  
      diffcolor = Cs * tex;
  
      // Compute Ci and Oi
      Ci = irrad * diffcolor * Os;
      Oi = Os;
  
      if (a > 0) {
        // Store area and Ci in point cloud file
        bake3d(bakefile, displaychannels, P, Nn, "interpolate", 1,
               "_area", a, "_radiosity", Ci, "Cs", diffcolor);
      }
    }