Function renderPixelStandard

tutorials/pathtracer/pathtracer_device.cpp:1605–1637

task that renders a single screen tile */

/* task that renders a single screen tile */
void renderPixelStandard(const TutorialData& data,
                         int x, int y,
                         int* pixels,
                         const unsigned int width,
                         const unsigned int height,
                         const float time,
                         const ISPCCamera& camera,
                         RayStats& stats,
                         const RTCFeatureFlags features)
{
  RandomSampler sampler;

  Vec3fa L = Vec3fa(0.0f);

  for (int i=0; i<data.spp; i++)
  {
    RandomSampler_init(sampler, x, y, data.accu_count*data.spp+i);

    /* calculate pixel color */
    float fx = x + RandomSampler_get1D(sampler);
    float fy = y + RandomSampler_get1D(sampler);
    L = L + renderPixelFunction(data,fx,fy,sampler,camera,stats,features);
  }
  L = L/(float)data.spp;

  /* write color to framebuffer */
  Vec3ff accu_color = data.accu[y*width+x] + Vec3ff(L.x,L.y,L.z,1.0f); data.accu[y*width+x] = accu_color;
  float f = rcp(max(0.001f,accu_color.w));
  unsigned int r = (unsigned int) (255.01f * clamp(accu_color.x*f,0.0f,1.0f));
  unsigned int g = (unsigned int) (255.01f * clamp(accu_color.y*f,0.0f,1.0f));
  unsigned int b = (unsigned int) (255.01f * clamp(accu_color.z*f,0.0f,1.0f));
  pixels[y*width+x] = (b << 16) + (g << 8) + r;
}

/* task that renders a single screen tile */
void renderTileTask (int taskIndex, int threadIndex, int* pixels,