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GPU-Based Techniques for Global Illumination Effects

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

DOI: 10.1007/978-3-031-79525-1

ISBN: 978-3-031-79524-4

Publisher: Springer International Publishing - Springer Journals

Jan 1, 2008

1 - 10 of 12 Chapters

LitStream

Chapter 1Global Illumination Rendering

Szirmay-Kalos, László; Szécsi, László; Sbert, Mateu

Pages: 1 –22

[The ultimate objective of image synthesis or rendering is to provide the user with the illusion of watching real objects on the computer screen. The image on the computer screen consists of constant color small rectangles, called pixels. The color of pixels is generated from an internal model...
LitStream

Chapter 2Local Illumination Rendering Pipeline of GPUs

Szirmay-Kalos, László; Szécsi, László; Sbert, Mateu

Pages: 23 –41

[In this chapter, we review the incremental triangle rendering pipeline working with the local illumination model and discuss how its operations are supported by the graphics hardware (Figure 2.1).]
LitStream

Chapter 3Programming and Controlling GPUs

Szirmay-Kalos, László; Szécsi, László; Sbert, Mateu

Pages: 43 –65

[In this chapter, we are going to give a short review of the techniques necessary to control what the GPU pipeline does, accompanied by simple programming examples. A reader deeply familiar with HLSL programming may wish to skip this introduction, and continue reading at Section 3.3.1, where we...
LitStream

Chapter 4Simple Improvements of the Local Illumination Model

Szirmay-Kalos, László; Szécsi, László; Sbert, Mateu

Pages: 67 –89

[Local illumination models simplify the rendering problem to shading a surface fragment according to a given point or directional light source. This is based on several false assumptions resulting in less realistic images:]
LitStream

Chapter 5Ray Casting on the GPU

Szirmay-Kalos, László; Szécsi, László; Sbert, Mateu

Pages: 91 –115

[In Chapter 1 we introduced the global illumination problem as the solution of the rendering equation. To evaluate the integral numerically, we need samples, and those samples are light paths. In one way or another, all algorithms have to generate light paths connecting the lights with the...
LitStream

Chapter 6Specular Effects With Rasterization

Szirmay-Kalos, László; Szécsi, László; Sbert, Mateu

Pages: 117 –145

[The computation of specular effects, such as ideal reflection, refraction,or caustics, can be regarded as a process looking for light paths containing more than one scattering point (Figure 6.1). For example, in the case of reflection we first find the point visible from the camera, which is the...
LitStream

Chapter 7Diffuse and Glossy Indirect Illumination

Szirmay-Kalos, László; Szécsi, László; Sbert, Mateu

Pages: 147 –167

[Optically rough surfaces reflect light not just at a single direction as mirror-like smooth surfaces but at infinitely many directions. The reflected radiance of very rough surfaces, which are called diffuse surfaces, is similar for all viewing directions. Smoother, glossy surfaces still reflect...
LitStream

Chapter 8Pre-computation Aided Global Illumination

Szirmay-Kalos, László; Szécsi, László; Sbert, Mateu

Pages: 169 –194

[Global illumination algorithms should integrate the contribution of all light paths connecting the eye and the light sources via scattering points. If the scene is static, that is, its geometry and material properties do not change in time, then these light paths remain the same except for the...
LitStream

Chapter 9Participating Media Rendering

Szirmay-Kalos, László; Szécsi, László; Sbert, Mateu

Pages: 195 –217

[So far we assumed that the radiance is constant along a ray and scattering may occur just on object surfaces. Participating media, however, may scatter light not only on their boundary, but anywhere inside their volume. Such phenomena are often called subsurface scattering,or translucency....
LitStream

Chapter 10Fake Global Illumination

Szirmay-Kalos, László; Szécsi, László; Sbert, Mateu

Pages: 219 –228

[Global illumination computation is inherently costly since all other points may affect the illumination of a particular point. The inherent complexity can be reduced if the physically plausible model is replaced by another model that is simpler to solve but provides somehow similarly looking...

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