Chapter 10 Local Illumination
DOI: 10.1201/b22086-10
“Light makes right.”
—Andrew Glassner
In Chapter 9 we discussed the theory of physically based materials, and how to evaluate them with punctual light sources. With this content we can perform shading computations by simulating how lights interact with surfaces, in order to measure how much radiance is sent in a given direction to our virtual camera. This spectral radiance is the scene-referred pixel color that will be converted (Section 8.2) to the display-referred color a given pixel will have in the final image.
In reality, the interactions that we need to consider are never punctual. We have seen in Section 9.13.1 how, in order to correctly evaluate shading, we have to solve the ...
Get Real-Time Rendering, Fourth Edition, 4th Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
