OpenGL extension EXT.cull_vertex
This module customises the behaviour of the
OpenGL.raw.GL.EXT.cull_vertex to provide a more
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:
|EXTENSION_NAME = 'GL_EXT_cull_vertex'|
GL_CULL_VERTEX_EXT = GL_CULL_VERTEX_EXT
GL_CULL_VERTEX_EYE_POSITION_EXT = GL_CULL_VERTEX_EYE_POSITION_EXT
GL_CULL_VERTEX_OBJECT_POSITION_EXT = GL_CULL_VERTEX_OBJECT_POSITION_EXT
__file__ = '/home/mcfletch/pylive/OpenGL/GL/EXT/cull_vertex.pyc'
__name__ = 'OpenGL.GL.EXT.cull_vertex'
__package__ = 'OpenGL.GL.EXT'
glCullParameterdvEXT = <OpenGL.platform.baseplatform.glCullParameterdvEXT object at 0x75602d0>
glCullParameterfvEXT = <OpenGL.platform.baseplatform.glCullParameterfvEXT object at 0x7560310>