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'''OpenGL extension SGIX.texture_multi_buffer
Overview (from the spec)
This extension provides an API for the application to specify that
the OpenGL should handle multiple textures in such a way that,
wherever possible, a texture definition or redefinition can occur
in parallel with rendering that uses a different texture.
The texture_object extension allows the simultaneous definition
of multiple textures; any texture that is not being used for
rendering can, in principle, have its definition or operations
in its definition (e.g. downloading to hardware) occur in parallel
with the use of another texture. This is true as long as all
redefinitions strictly follow any use of the previous definition.
Conceptually this is similar to frame buffer double-buffering,
except that the intent here is to simply provide a hint to the
OpenGL to promote such double-buffering if and wherever possible.
The effect of such a hint is to speed up operations without
affecting the result. The user on any particular system must be
knowledgable and prepared to accept any trade-offs which follow
from such a hint.
GL_FASTEST in this context means that texture multi-buffering
is being used whenever possible to improve performance.
Generally, textures that are adjacent in a sequence of multiple
texture definitions have the greatest chance of being in
different buffers. The number of buffers available at any time
depends on various factors, such as the machine being used and
the textures' internal formats.
The official definition of this extension is available here:
http://oss.sgi.com/projects/ogl-sample/registry/SGIX/texture_multi_buffer.txt
Automatically generated by the get_gl_extensions script, do not edit!
'''
from OpenGL import platform, constants, constant, arrays
from OpenGL import extensions
from OpenGL.GL import glget
import ctypes
EXTENSION_NAME = 'GL_SGIX_texture_multi_buffer'
GL_TEXTURE_MULTI_BUFFER_HINT_SGIX = constant.Constant( 'GL_TEXTURE_MULTI_BUFFER_HINT_SGIX', 0x812E )
def glInitTextureMultiBufferSGIX():
'''Return boolean indicating whether this extension is available'''
return extensions.hasGLExtension( EXTENSION_NAME )
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