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'''OpenGL extension ARB.texture_env_combine
This module customises the behaviour of the
OpenGL.raw.GL.ARB.texture_env_combine to provide a more
Python-friendly API
Overview (from the spec)
New texture environment function COMBINE_ARB allows programmable
texture combiner operations, including:
REPLACE Arg0
MODULATE Arg0 * Arg1
ADD Arg0 + Arg1
ADD_SIGNED_ARB Arg0 + Arg1 - 0.5
SUBTRACT_ARB Arg0 - Arg1
INTERPOLATE_ARB Arg0 * (Arg2) + Arg1 * (1-Arg2)
where Arg0, Arg1 and Arg2 are derived from
PRIMARY_COLOR_ARB primary color of incoming fragment
TEXTURE texture color of corresponding texture unit
CONSTANT_ARB texture environment constant color
PREVIOUS_ARB result of previous texture environment; on
texture unit 0, this maps to PRIMARY_COLOR_ARB
In addition, the result may be scaled by 1.0, 2.0 or 4.0.
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/ARB/texture_env_combine.txt
'''
from OpenGL import platform, constant, arrays
from OpenGL import extensions, wrapper
import ctypes
from OpenGL.raw.GL import _types, _glgets
from OpenGL.raw.GL.ARB.texture_env_combine import *
from OpenGL.raw.GL.ARB.texture_env_combine import _EXTENSION_NAME
def glInitTextureEnvCombineARB():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
### END AUTOGENERATED SECTION
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