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'''OpenGL extension EXT.sparse_texture2
This module customises the behaviour of the
OpenGL.raw.GLES2.EXT.sparse_texture2 to provide a more
Python-friendly API
Overview (from the spec)
This extension builds on the ARB_sparse_texture extension, providing the
following new functionality:
* New built-in GLSL texture lookup and image load functions are provided
that return information on whether the texels accessed for the texture
lookup accessed uncommitted texture memory.
* New built-in GLSL texture lookup functions are provided that specify a
minimum level of detail to use for lookups where the level of detail
is computed automatically. This allows shaders to avoid accessing
unpopulated portions of high-resolution levels of detail when it knows
that the memory accessed is unpopulated, either from a priori
knowledge or from feedback provided by the return value of previously
executed "sparse" texture lookup functions.
* Reads of uncommitted texture memory will act as though such memory
were filled with zeroes; previously, the values returned by reads were
undefined.
* Standard implementation-independent virtual page sizes for internal
formats required to be supported with sparse textures. These standard
sizes can be requested by leaving VIRTUAL_PAGE_SIZE_INDEX_ARB at its
initial value (0).
* Support for creating sparse multisample and multisample array textures
is added. However, the virtual page sizes for such textures remain
fully implementation-dependent.
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/EXT/sparse_texture2.txt
'''
from OpenGL import platform, constant, arrays
from OpenGL import extensions, wrapper
import ctypes
from OpenGL.raw.GLES2 import _types, _glgets
from OpenGL.raw.GLES2.EXT.sparse_texture2 import *
from OpenGL.raw.GLES2.EXT.sparse_texture2 import _EXTENSION_NAME
def glInitSparseTexture2EXT():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
### END AUTOGENERATED SECTION
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