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'''OpenGL extension EXT.cull_vertex
This module customises the behaviour of the
OpenGL.raw.GL.EXT.cull_vertex to provide a more
Python-friendly API
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://www.opengl.org/registry/specs/EXT/cull_vertex.txt
'''
from OpenGL import platform, constant, arrays
from OpenGL import extensions, wrapper
import ctypes
from OpenGL.raw.GL import _types, _glgets
from OpenGL.raw.GL.EXT.cull_vertex import *
from OpenGL.raw.GL.EXT.cull_vertex import _EXTENSION_NAME
def glInitCullVertexEXT():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
glCullParameterdvEXT=wrapper.wrapper(glCullParameterdvEXT).setOutput(
'params',size=(4,),orPassIn=True
)
glCullParameterfvEXT=wrapper.wrapper(glCullParameterfvEXT).setOutput(
'params',size=(4,),orPassIn=True
)
### END AUTOGENERATED SECTION
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