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Practical Global Illumination with Irradiance Caching

Part of the Synthesis Lectures on Computer Graphics and Animation Book Series

DOI: 10.1007/978-3-031-79540-4

ISBN: 978-3-031-79539-8

Publisher: Springer International Publishing - Springer Journals

Jan 1, 2009

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Chapter 1Introduction to Ray Tracing and Global Illumination

Křivánek, Jaroslav; Gautron, Pascal

Pages: 1 –16

[Our visual perception of reality is due to the light entering our eyes. But before the light reaches the eyes on its way from the light source, it is usually reflected or refracted many times off object surfaces. In computer graphics, we refer to the light bouncing around in a scene as global...
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Chapter 2Irradiance Caching Core

Křivánek, Jaroslav; Gautron, Pascal

Pages: 17 –42

[As described in the previous chapter, a straightforward way to compute indirect illumination at a point on a diffuse surface is hemisphere sampling: a number of secondary rays are traced and their radiance contributions are averaged. However, doing so at each visible point is prohibitive, since...
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Chapter 3Practical Rendering with Irradiance Caching

Křivánek, Jaroslav; Gautron, Pascal

Pages: 43 –54

[This chapter discusses some details that make rendering with irradiance caching more practical. Section 3.1 shows that the order in which pixels are visited during image rendering may have a significant impact on the caching performance and image quality. In Section 3.2 we focus on maintaining a...
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Chapter 4Irradiance Caching in a Complete Global Illumination Solution

Křivánek, Jaroslav; Gautron, Pascal

Pages: 55 –70

[In this chapter, we treat the irradiance caching algorithm as a black box and we focus on its efficient integration in the process of computing full global illumination solution.]
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Chapter 5Irradiance Caching on Graphics Hardware

Křivánek, Jaroslav; Gautron, Pascal

Pages: 71 –90

[In the classical irradiance caching algorithm, the irradiance cache is queried for each visible point in the scene to determine if a new irradiance record should be created. When a new record is required, the irradiance value is computed by sampling the surrounding hemisphere using ray tracing....
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Chapter 6Temporal Irradiance Caching

Křivánek, Jaroslav; Gautron, Pascal

Pages: 91 –104

[Most global illumination methods only focus on static scenes. Accounting for animated objects and light sources either require a recomputation of the global illumination solution for each frame or involve complex data structures and algorithms for temporal optimization [SKDM05]. Furthermore,...

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