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
Content preview from OpenGL Programming Guide: The Official Guide to Learning OpenGL, Version 4.3, Eighth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
Wood
We can do a fair approximation of wood with this approach as well. In Advanced Renderman, Anthony A. Apodaca and Larry Gritz describe a model for simulating the appearance of wood. We can adapt their approach to create wood shaders in GLSL. Following are the basic ideas behind the wood fragment shader shown in Example 8.21:
• Wood is composed of light and dark areas alternating in concentric cylinders surrounding a central axis.
• Noise is added to warp the cylinders to create a more natural-looking pattern.
• The center of the “tree” is taken to be the y axis.
• Throughout the wood, a high-frequency grain pattern gives the appearance of wood that has been sawed, exposing the open grain nature of the wood.
The wood shader uses the same vertex ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.