July 2012
Intermediate to advanced
712 pages
24h 57m
English
Content preview from OpenGL Insights
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Improving Performance by
Reducing Calls to the Driver
S
´
ebastien Hillaire
25.1 Introduction
Rendering a scene can involve several rendering passes such as shadow map construc-
tion, light contribution accumulation, and framebuffer postprocessing. OpenGL is
a state machine, and each of these passes requires changing state several times. Ren-
dering requires two main steps:
1. Modify OpenGL states and objects in order to set up the assets used for ren-
dering.
2. Issue a draw call to draw triangles and effectively change some pixel values.
These two steps require multiple calls to the driver. The driver is responsible for
translating these function calls ...
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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.