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 2. Hello Triangle: An OpenGL ES 2.0 Example
To introduce the basic concepts of OpenGL ES 2.0, we begin with a simple example. In this chapter, we show what is required to create an OpenGL ES 2.0 program that draws a single triangle. The program we will write is just about the most basic example of an OpenGL ES 2.0 application that draws geometry. There are number of concepts that we cover in this chapter:
- Creating an on-screen render surface with EGL.
- Loading vertex and fragment shaders.
- Creating a program object, attaching vertex and fragment shaders, and linking a program object.
- Setting the viewport.
- Clearing the color buffer.
- Rendering a simple primitive.
- Making the contents of the color buffer visible in the EGL window surface. ...
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