OpenGL.GL.ARB.texture_env_add

OpenGL extension ARB.texture_env_add

This module customises the behaviour of the OpenGL.raw.GL.ARB.texture_env_add to provide a more Python-friendly API

Overview (from the spec)

New texture environment function ADD is supported with the following equation: Cv = min(1, Cf + Ct)

New function may be specified by calling TexEnv with ADD token.

One possible application is to add a specular highlight texture to a Gouraud-shaded primitive to emulate Phong shading, in a single pass.

The official definition of this extension is available here: http://www.opengl.org/registry/specs/ARB/texture_env_add.txt