GL_OES_texture_env_crossbar

Supported Hardware

Series5, Series5XT, Series6, Series6XE, Series6XT

Valid APIs

OpenGL ES 1.x

Description

This extension extends the combining functionality in OpenGL ES 1 to allow application developers to choose textures from specific active texture units as the source, rather than just the current texture.

Note

This extension is part of the OpenGL ES 1.x Extension Pack Specification and is core functionality in OpenGL ES 2.0 and 3.0.

Registry Link

http://www.khronos.org/registry/gles/extensions/OES/OES_texture_env_crossbar.txt

Example

// Set the first source alpha texture environment variable 
// to sample from the third texture unit 
glTexEnvi(GL_TEXTURE_2D, GL_SOURCE0_ALPHA, GL_TEXTURE2);