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'''OpenGL extension ATI.envmap_bumpmap
Overview (from the spec)
This extension adds environment mapped bump mapping (EMBM) to the GL.
The method exposed by this extension is to use a dependent texture
read on a bumpmap (du,dv) texture to offset the texture coordinates
read into a map on another texture unit. This (du,dv) offset is also
rotated through a user-specified rotation matrix to get the texture
coordinates into the appropriate space.
A new texture format is introduced in order for specifying the (du,dv)
bumpmap texture. This map represents -1 <= du,dv <= 1 offsets to
be applied to the texture coordinates used to read into the base
map. Additionally, the (du,dv) offsets are transformed by a rotation
matrix that this extension allows the user to specify. Further, a
new color operation is added to EXT_texture_env_combine to specify
both that bumpmapping is enabled and which texture unit to apply
the bump offset to.
The official definition of this extension is available here:
http://oss.sgi.com/projects/ogl-sample/registry/ATI/envmap_bumpmap.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_ATI_envmap_bumpmap'
GL_BUMP_ROT_MATRIX_ATI = constant.Constant( 'GL_BUMP_ROT_MATRIX_ATI', 0x8775 )
GL_BUMP_ROT_MATRIX_SIZE_ATI = constant.Constant( 'GL_BUMP_ROT_MATRIX_SIZE_ATI', 0x8776 )
GL_BUMP_NUM_TEX_UNITS_ATI = constant.Constant( 'GL_BUMP_NUM_TEX_UNITS_ATI', 0x8777 )
GL_BUMP_TEX_UNITS_ATI = constant.Constant( 'GL_BUMP_TEX_UNITS_ATI', 0x8778 )
GL_DUDV_ATI = constant.Constant( 'GL_DUDV_ATI', 0x8779 )
GL_DU8DV8_ATI = constant.Constant( 'GL_DU8DV8_ATI', 0x877A )
GL_BUMP_ENVMAP_ATI = constant.Constant( 'GL_BUMP_ENVMAP_ATI', 0x877B )
GL_BUMP_TARGET_ATI = constant.Constant( 'GL_BUMP_TARGET_ATI', 0x877C )
glTexBumpParameterivATI = platform.createExtensionFunction(
'glTexBumpParameterivATI', dll=platform.GL,
extension=EXTENSION_NAME,
resultType=None,
argTypes=(constants.GLenum, arrays.GLintArray,),
doc = 'glTexBumpParameterivATI( GLenum(pname), GLintArray(param) ) -> None',
argNames = ('pname', 'param',),
)
glTexBumpParameterfvATI = platform.createExtensionFunction(
'glTexBumpParameterfvATI', dll=platform.GL,
extension=EXTENSION_NAME,
resultType=None,
argTypes=(constants.GLenum, arrays.GLfloatArray,),
doc = 'glTexBumpParameterfvATI( GLenum(pname), GLfloatArray(param) ) -> None',
argNames = ('pname', 'param',),
)
glGetTexBumpParameterivATI = platform.createExtensionFunction(
'glGetTexBumpParameterivATI', dll=platform.GL,
extension=EXTENSION_NAME,
resultType=None,
argTypes=(constants.GLenum, arrays.GLintArray,),
doc = 'glGetTexBumpParameterivATI( GLenum(pname), GLintArray(param) ) -> None',
argNames = ('pname', 'param',),
)
glGetTexBumpParameterfvATI = platform.createExtensionFunction(
'glGetTexBumpParameterfvATI', dll=platform.GL,
extension=EXTENSION_NAME,
resultType=None,
argTypes=(constants.GLenum, arrays.GLfloatArray,),
doc = 'glGetTexBumpParameterfvATI( GLenum(pname), GLfloatArray(param) ) -> None',
argNames = ('pname', 'param',),
)
def glInitEnvmapBumpmapATI():
'''Return boolean indicating whether this extension is available'''
return extensions.hasGLExtension( EXTENSION_NAME )
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