OpenGL extension NV.primitive_restart
This module customises the behaviour of the
OpenGL.raw.GL.NV.primitive_restart to provide a more
Overview (from the spec)
This extension allows applications to easily and inexpensively
restart a primitive in its middle. A "primitive restart" is simply
the same as an End command, followed by another Begin command with
the same mode as the original. The typical expected use of this
feature is to draw a mesh with many triangle strips, though primitive
restarts are legal for all primitive types, even for points (where
they are not useful).
Although the EXT_multi_draw_arrays extension did reduce the overhead
of such drawing techniques, they still remain more expensive than one
This extension provides an extremely lightweight primitive restart,
which is accomplished by allowing the application to choose a special
index number that signals that a primitive restart should occur,
rather than a vertex being provoked. This index can be an arbitrary
32-bit integer for maximum application convenience.
In addition, for full orthogonality, a special OpenGL command is
provided to restart primitives when in immediate mode. This command
is not likely to increase performance in any significant fashion, but
providing it greatly simplifies the specification and implementation
of display list compilation and indirect rendering.
The official definition of this extension is available here:
|EXTENSION_NAME = 'GL_NV_primitive_restart'|
GL_PRIMITIVE_RESTART_INDEX_NV = GL_PRIMITIVE_RESTART_INDEX_NV
GL_PRIMITIVE_RESTART_NV = GL_PRIMITIVE_RESTART_NV
__file__ = '/home/mcfletch/pylive/OpenGL/GL/NV/primitive_restart.pyc'
__name__ = 'OpenGL.GL.NV.primitive_restart'
__package__ = 'OpenGL.GL.NV'
glPrimitiveRestartIndexNV = <OpenGL.platform.baseplatform.glPrimitiveRestartIndexNV object at 0x797a910>
glPrimitiveRestartNV = <OpenGL.platform.baseplatform.glPrimitiveRestartNV object at 0x797a850>