Schedule Syllabus Resources

Shadow map code

Code changes from class:

• shadowMap.vert:

  //TODO: move vertex, put in light view
  vec4 vertPos = mR * mT * vec4(pos, 1);
  vertPos = Lp * Lv  * vertPos;
  
  return vertPos;
  

• reflectance.vert:

  //TODO: move vertex, put in light view
  vec4 vertPos = mR * mT * vec4(pos, 1);
  vertPos = offset * Lp * Lv  * vertPos;
  
  return vertPos;
  

• reflectance.frag:

  //TODO: adjust for the perspective divide and bias
  vec4 shp = shadowPos;
  shp = shp/shp.w;
  shp.z = shp.z - getBias();
  return shp;
  

• reflectance.frag:

  //TODO lookup the distance in the shapow map, get surface and occlusion distance
  vec4 shadowTexel = texture(texId, shadowPoint.xy);
  float surfaceDistance = shadowPoint.z;
  float occlusionDistance = shadowTexel.z;