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GPU Gems 2: Programming Techniques for High-Performance Graphics and General-Purpose Computation by Randima Fernando, Matt Pharr

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Chapter 38. High-Quality Global Illumination Rendering Using Rasterization

Toshiya HachisukaThe University of Tokyo

While the visual richness of images that current GPUs can render interactively continues to increase quickly, there are many important lighting effects that are not easily handled with current techniques. One important lighting effect that is difficult for GPUs is high-quality global illumination, where light that reflects off of objects in the scene that are not themselves light emitters is included in the final image. Incorporating this indirect illumination in rendered images greatly improves their visual quality; Figure 38-1 shows an indoor scene with indirect lighting and large area light sources. Like all images in this chapter, ...

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