July 2008
Intermediate to advanced
480 pages
9h 29m
English
Content preview from OpenGL® ES 2.0 Programming GuideBecome 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,
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Chapter 3. An Introduction to EGL
In Chapter 2, “Hello, Triangle: An OpenGL ES 2.0 Example,” we drew a triangle into a window using OpenGL ES 2.0, but we used some custom functions of our own design to open and manage the window. Although that simplifies our examples, it obscures how you might need to work with OpenGL ES 2.0 on your own systems.
As part of the family of APIs provided by the Khronos Group for developing content, a (mostly) platform-independent API, EGL, is available for managing drawing surfaces (windows are just one type; we’ll talk about others later). EGL provides the mechanisms for the following:
- Communicating with the native windowing system of your system.
- Querying the available types and configurations of drawing surfaces. ...
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