OpenGL.GL.EXT.texture_env_dot3

OpenGL extension EXT.texture_env_dot3

This module customises the behaviour of the OpenGL.raw.GL.EXT.texture_env_dot3 to provide a more Python-friendly API

Overview (from the spec)

Adds new operation to the texture combiner operations.

DOT3_RGB_EXT Arg0 <dotprod> Arg1 DOT3_RGBA_EXT Arg0 <dotprod> Arg1

where Arg0, Arg1 are derived from

PRIMARY_COLOR_EXT primary color of incoming fragment TEXTURE texture color of corresponding texture unit CONSTANT_EXT texture environment constant color PREVIOUS_EXT result of previous texture environment; on texture unit 0, this maps to PRIMARY_COLOR_EXT

This operaion can only be performed if SOURCE0_RGB_EXT, SOURCE1_RGB_EXT are defined.

The official definition of this extension is available here: http://www.opengl.org/registry/specs/EXT/texture_env_dot3.txt