The official definition of this extension is available here:
http://www.opengl.org/registry/specs/ARB/texture_compression.txt
'''
from OpenGL import platform, constants, constant, arrays
from OpenGL import extensions, wrapper
from OpenGL.GL import glget
import ctypes
from OpenGL.raw.GL.ARB.texture_compression import *
### END AUTOGENERATED SECTION
from OpenGL.GL import images
for dimensions in (1,2,3):
for function in ('glCompressedTexImage%sDARB','glCompressedTexSubImage%sDARB'):
name = function%(dimensions,)
globals()[ name ] = images.compressedImageFunction(
globals()[ name ]
)
try:
del name, function
except NameError as err:
pass
try:
del dimensions
except NameError as err:
pass
if glGetCompressedTexImageARB:
def glGetCompressedTexImageARB( target, level, img=None ):
"""Retrieve a compressed texture image"""
if img is None:
length = glget.glGetTexLevelParameteriv(
### END AUTOGENERATED SECTION
GL_SRC0_ALPHA = GL_SOURCE0_ALPHA # alias
GL_SRC0_RGB = GL_SOURCE0_RGB # alias
GL_SRC1_ALPHA = GL_SOURCE1_ALPHA # alias
GL_SRC1_RGB = GL_SOURCE1_RGB # alias
GL_SRC2_ALPHA = GL_SOURCE2_ALPHA # alias
GL_SRC2_RGB = GL_SOURCE2_RGB # alias
from OpenGL import wrapper
from OpenGL.raw.GL.VERSION import GL_1_3 as _simple
from OpenGL.GL import images, glget
for dimensions in (1, 2, 3):
for function in ('glCompressedTexImage%sD', 'glCompressedTexSubImage%sD'):
name = function % (dimensions, )
globals()[name] = images.compressedImageFunction(getattr(
_simple, name))
try:
del name, function
except NameError as err:
pass
try:
del dimensions
except NameError as err:
pass
if _simple.glGetCompressedTexImage:
def glGetCompressedTexImage(target, level, img=None):
"""Retrieve a compressed texture image"""
if img is None:
length = glget.glGetTexLevelParameteriv(
"""OpenGL version 1.3 imaging-handling routines"""
from OpenGL import wrapper, constants, arrays
from OpenGL.raw.GL.VERSION import GL_1_3 as simple
from OpenGL.GL import images, glget
for dimensions in (1,2,3):
for function in ('glCompressedTexImage%sD','glCompressedTexSubImage%sD'):
name = function%(dimensions,)
globals()[ name ] = images.compressedImageFunction(
getattr( simple, name )
)
del name, function
del dimensions
if simple.glGetCompressedTexImage:
def glGetCompressedTexImage( target, level, img=None ):
"""Retrieve a compressed texture image"""
if img is None:
length = glget.glGetTexLevelParameteriv(
target, 0,
simple.GL_TEXTURE_COMPRESSED_IMAGE_SIZE_ARB,
)
img = arrays.ArrayDataType.zeros( (length,), constants.GL_UNSIGNED_BYTE )
return simple.glGetCompressedTexImage(target, 0, img);