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'''OpenGL extension SGIX.blend_alpha_minmax
Overview (from the spec)
Two additional blending equations are specified using the interface
defined by EXT_blend_minmax. These equations are similar to the
MIN_EXT and MAX_EXT blending equations, but the outcome for all four
color components is determined by a comparison of just the alpha
component's source and destination values. These equations are useful
in image processing and advanced shading algorithms.
The official definition of this extension is available here:
http://oss.sgi.com/projects/ogl-sample/registry/SGIX/blend_alpha_minmax.txt
Automatically generated by the get_gl_extensions script, do not edit!
'''
from OpenGL import platform, constants, constant, arrays
from OpenGL import extensions
from OpenGL.GL import glget
import ctypes
EXTENSION_NAME = 'GL_SGIX_blend_alpha_minmax'
GL_ALPHA_MIN_SGIX = constant.Constant( 'GL_ALPHA_MIN_SGIX', 0x8320 )
GL_ALPHA_MAX_SGIX = constant.Constant( 'GL_ALPHA_MAX_SGIX', 0x8321 )
def glInitBlendAlphaMinmaxSGIX():
'''Return boolean indicating whether this extension is available'''
return extensions.hasGLExtension( EXTENSION_NAME )
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