[an error occurred while processing this directive]
The main purpose of this review is above all to analyze brazil configuration methods and means for indirect illumination calculations. And many other issues, important for illumination on the whole, are left out of the scope of this article. For example, setting up direct illumination and materials. However, this approach is justified, because it allows better focus on the object of the article. Later on, both direct illumination and materials, as well as other topics, will surely be touched upon in descriptions of sample illumination settings for certain scenes, but only as much as necessary.
Indirect illumination calculation setup pursues only two objects in the long run. The first one – to obtain smooth rendered images with secondary illumination, without visible patches, hot spots/dark areas in the corners and other artifacts. The second – to obtain physically correct secondary illumination while preserving smooth rendered images. The latter task is much more difficult, it requires more time and efforts.
There can be three methods of calculating secondary illumination.
All the three methods of calculating illumination in brazil are used in practice and their examples will be reviewed in much detail in the next, second part of the review.