March 2013
Intermediate to advanced
984 pages
26h 18m
English
book
OpenGL Programming Guide: The Official Guide to Learning OpenGL, Version 4.3, Eighth Edition
by Dave Shreiner, Graham Sellers, John M. Kessenich, Bill M. Licea-Kane
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Noise Functions
Portability Note: Built-in noise functions are not reproducible from platform to platform. Verify their support and appearance on all platforms you care about.
Noise functions can be used to increase visual complexity. Values returned by the following noise functions give the appearance of randomness but are not random. Rather, they give the same result for the same input, allowing reproduction of the same variance from frame to frame.
The noise functions below are defined to have the following characteristics:
• The return value(s) are always in the range [–1.0, 1.0], and cover at least the range [–0.6, 0.6], with a Gaussian-like distribution.
• The return value(s) have an overall average of 0.0.
• They are repeatable, in that ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.