Graphics Reference
In-Depth Information
The strong point of Montecarlo rendering is that it can give very clean results if you have the time to
spare. Doing sample tests on a limited area can allow you to pinpoint the render quality needed, and then
a final render can be launched. The resulting image will have good, even render quality and no undesirable
lighting artifacts.
Irradiance Caching
Irradiance Caching provides a more elegant solution to rendering with Global Illumination, but it can be
frustrating for problematic images if not approached correctly. Just like the previous render type, Irradiance
Caching has a number of rays that can be set. However, this works a bit more like the example of antialias-
ing: a simple increase does not guarantee the best results. Irradiance Caching is on by default when Indirect
Illumination is enabled. Clicking the Enable box under Irradiance Caching will toggle the mode.
Figure 7-37
shows various levels of Irradiance Rays. Notice the increase in quality around the middle of
the ball. It is also important to note that the render times of all these images are less than the lowest-quality
