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'''OpenGL extension ARB.texture_border_clamp
Overview (from the spec)
The base OpenGL provides clamping such that the texture coordinates are
limited to exactly the range [0,1]. When a texture coordinate is clamped
using this algorithm, the texture sampling filter straddles the edge of
the texture image, taking 1/2 its sample values from within the texture
image, and the other 1/2 from the texture border. It is sometimes
desirable for a texture to be clamped to the border color, rather than to
an average of the border and edge colors.
This extension defines an additional texture clamping algorithm.
CLAMP_TO_BORDER_ARB clamps texture coordinates at all mipmap levels such
that NEAREST and LINEAR filters return only the color of the border
texels.
The official definition of this extension is available here:
http://oss.sgi.com/projects/ogl-sample/registry/ARB/texture_border_clamp.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_ARB_texture_border_clamp'
GL_CLAMP_TO_BORDER_ARB = constant.Constant( 'GL_CLAMP_TO_BORDER_ARB', 0x812D )
def glInitTextureBorderClampARB():
'''Return boolean indicating whether this extension is available'''
return extensions.hasGLExtension( EXTENSION_NAME )
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