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
33
34
35
36
37
38
|
'''OpenGL extension SGIX.texture_scale_bias
This module customises the behaviour of the
OpenGL.raw.GL.SGIX.texture_scale_bias to provide a more
Python-friendly API
Overview (from the spec)
This extension adds scale, bias, and clamp to [0, 1] operations to the
texture pipeline.
These operations are applied to the filtered result of a texture lookup,
before that result is used in the texture environment equations and
before the texture color lookup table of SGI_texture_color_table,
if that extension exists.
These operations are distinct from the scale, bias, and clamp operations
that appear in the SGI_color_table extension, which are used to
define a color lookup table.
Scale and bias operations on texels can be used to better utilize the
color resolution of a particular texture internal format (see EXT_texture).
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/SGIX/texture_scale_bias.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.texture_scale_bias import *
from OpenGL.raw.GL.SGIX.texture_scale_bias import _EXTENSION_NAME
def glInitTextureScaleBiasSGIX():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
### END AUTOGENERATED SECTION
|
