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- '''OpenGL extension EXT.cull_vertex
-
- Overview (from the spec)
-
- This extension introduces a method for culling vertexes in object
- space based on the value of the dot product between the normal at
- the vertex and a culling eye direction.
-
- Culling a polygon by examining its vertexes in object space can be
- more efficient than screen space polygon culling since the transformation
- to screen space (which may include a division by w) can be avoided for
- culled vertexes. Also, vertex culling can be computed before vertexes
- are assembled into primitives. This is a useful property when drawing
- meshes with shared vertexes, since a vertex can be culled once, and the
- resulting state can be used for all primitives which share the vertex.
-
- The official definition of this extension is available here:
- http://oss.sgi.com/projects/ogl-sample/registry/EXT/cull_vertex.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_cull_vertex'
- GL_CULL_VERTEX_EXT = constant.Constant( 'GL_CULL_VERTEX_EXT', 0x81AA )
- GL_CULL_VERTEX_EYE_POSITION_EXT = constant.Constant( 'GL_CULL_VERTEX_EYE_POSITION_EXT', 0x81AB )
- GL_CULL_VERTEX_OBJECT_POSITION_EXT = constant.Constant( 'GL_CULL_VERTEX_OBJECT_POSITION_EXT', 0x81AC )
- glCullParameterdvEXT = platform.createExtensionFunction(
- 'glCullParameterdvEXT', dll=platform.GL,
- extension=EXTENSION_NAME,
- resultType=None,
- argTypes=(constants.GLenum, arrays.GLdoubleArray,),
- doc = 'glCullParameterdvEXT( GLenum(pname), GLdoubleArray(params) ) -> None',
- argNames = ('pname', 'params',),
- )
-
- glCullParameterfvEXT = platform.createExtensionFunction(
- 'glCullParameterfvEXT', dll=platform.GL,
- extension=EXTENSION_NAME,
- resultType=None,
- argTypes=(constants.GLenum, arrays.GLfloatArray,),
- doc = 'glCullParameterfvEXT( GLenum(pname), GLfloatArray(params) ) -> None',
- argNames = ('pname', 'params',),
- )
-
-
- def glInitCullVertexEXT():
- '''Return boolean indicating whether this extension is available'''
- return extensions.hasGLExtension( EXTENSION_NAME )
-