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'''OpenGL extension EXT.texture_perturb_normal
Overview (from the spec)
This extension defines a mechanism for using texture values to perturb
the fragment normal vector prior to fragment lighting. It enables a
direct implementation of the original formulation of bump mapping by
Blinn.
The official definition of this extension is available here:
http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_perturb_normal.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_EXT_texture_perturb_normal'
GL_PERTURB_EXT = constant.Constant( 'GL_PERTURB_EXT', 0x85AE )
GL_TEXTURE_NORMAL_EXT = constant.Constant( 'GL_TEXTURE_NORMAL_EXT', 0x85AF )
glTextureNormalEXT = platform.createExtensionFunction(
'glTextureNormalEXT', dll=platform.GL,
extension=EXTENSION_NAME,
resultType=None,
argTypes=(constants.GLenum,),
doc = 'glTextureNormalEXT( GLenum(mode) ) -> None',
argNames = ('mode',),
)
def glInitTexturePerturbNormalEXT():
'''Return boolean indicating whether this extension is available'''
return extensions.hasGLExtension( EXTENSION_NAME )
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