'''OpenGL extension SGIS.blended_overlay

This module customises the behaviour of the 
OpenGL.raw.GLX.SGIS.blended_overlay to provide a more 
Python-friendly API

The official definition of this extension is available here:
http://www.opengl.org/registry/specs/SGIS/blended_overlay.txt
'''
from OpenGL import platform, constant, arrays
from OpenGL import extensions, wrapper
import ctypes
from OpenGL.raw.GLX import _types, _glgets
from OpenGL.raw.GLX.SGIS.blended_overlay import *
from OpenGL.raw.GLX.SGIS.blended_overlay import _EXTENSION_NAME

def glInitBlendedOverlaySGIS():
    '''Return boolean indicating whether this extension is available'''
    from OpenGL import extensions
    return extensions.hasGLExtension( _EXTENSION_NAME )


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