December 2013
Intermediate to advanced
116 pages
2h 15m
English
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Shader input and output variables
Until now, we've been speaking about the language itself; how it's similar to the C programming language, but focusing specially on the differences. That was only the language part. Now it's time to see some of the functional parts of GLSL and cover an important topic: the inputs and outputs of the shaders.
Uniform variables
Suppose, you want to create a shader that makes use of a simple light. Well, shaders don't know about lights or any other high-level concept. Shaders only know about math and programming. So, if the language doesn't have support for lights, how would I use the light's position or color in a shader?
You need to pass those variables from your application to your shader and perform the lighting ...
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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.