1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
'''OpenGL extension SGIX.blend_alpha_minmax
This module customises the behaviour of the
OpenGL.raw.GL.SGIX.blend_alpha_minmax to provide a more
Python-friendly API
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://www.opengl.org/registry/specs/SGIX/blend_alpha_minmax.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.SGIX.blend_alpha_minmax import *
from OpenGL.raw.GL.SGIX.blend_alpha_minmax import _EXTENSION_NAME
def glInitBlendAlphaMinmaxSGIX():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
### END AUTOGENERATED SECTION
|
