Function renderPixelStandard

tutorials/dynamic_scene/dynamic_scene_device.cpp:170–217

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)
{
  /* initialize ray */
  Ray ray(Vec3fa(camera.xfm.p), Vec3fa(normalize(x*camera.xfm.l.vx + y*camera.xfm.l.vy + camera.xfm.l.vz)), 0.0f, inf);

  /* intersect ray with scene */
  RTCIntersectArguments iargs;
  rtcInitIntersectArguments(&iargs);
  iargs.feature_mask = (RTCFeatureFlags) (FEATURE_MASK);
  
  rtcTraversableIntersect1(data.g_traversable,RTCRayHit_(ray),&iargs);
  RayStats_addRay(stats);

  /* shade pixels */
  Vec3fa color = Vec3fa(0.0f);
  if (ray.geomID != RTC_INVALID_GEOMETRY_ID)
  {
    Vec3fa diffuse = Vec3fa(data.colors[ray.geomID]);
    color = color + diffuse*0.1f;
    Vec3fa lightDir = normalize(Vec3fa(-1,-1,-1));

    /* initialize shadow ray */
    Ray shadow(ray.org + ray.tfar*ray.dir, neg(lightDir), 0.001f, inf);

    /* trace shadow ray */
    RTCOccludedArguments sargs;
    rtcInitOccludedArguments(&sargs);
    sargs.feature_mask = (RTCFeatureFlags) (FEATURE_MASK);
    rtcTraversableOccluded1(data.g_traversable,RTCRay_(shadow),&sargs);
    RayStats_addShadowRay(stats);

    /* add light contribution */
    if (shadow.tfar >= 0.0f)
      color = color + diffuse*clamp(-dot(lightDir,normalize(ray.Ng)),0.0f,1.0f);
  }

  /* write color to framebuffer */
  unsigned int r = (unsigned int) (255.0f * clamp(color.x,0.0f,1.0f));
  unsigned int g = (unsigned int) (255.0f * clamp(color.y,0.0f,1.0f));
  unsigned int b = (unsigned int) (255.0f * clamp(color.z,0.0f,1.0f));
  pixels[y*width+x] = (b << 16) + (g << 8) + r;
}

/* renders a single screen tile */
void renderTileStandard(int taskIndex,