GL_OES_blend_equation_separate#

Supported Hardware#

Series5, Series5XT, Series6, Series6XE, Series6XT

Valid APIs#

OpenGL ES 1.x

Description#

This function extends GL_OES_blend_subtract, which adds functionality allowing a blend equation to operate on all the channels in an output colour at once. However, often a different operation is wanted for the alpha and colour channels. This extension adds a new function, glBlendEquationSeparateOES, which operates in the same way as glBlendEquationOES, except that different equations can now be specified for RGB and Alpha.

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.

Example#

// Set the blend equation to use additive blending for the RGB channels, but subtractive for
// the Alpha channel.
glBlendEquationSeparate(GL_FUNC_ADD_OES, GL_FUNC_SUBTRACT_OES);