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'''OpenGL extension NV.representative_fragment_test
This module customises the behaviour of the
OpenGL.raw.GL.NV.representative_fragment_test to provide a more
Python-friendly API
Overview (from the spec)
This extension provides a new _representative fragment test_ that allows
implementations to reduce the amount of rasterization and fragment
processing work performed for each point, line, or triangle primitive. For
any primitive that produces one or more fragments that pass all other
early fragment tests, the implementation is permitted to choose one or
more "representative" fragments for processing and discard all other
fragments. For draw calls rendering multiple points, lines, or triangles
arranged in lists, strips, or fans, the representative fragment test is
performed independently for each of those primitives.
This extension is useful for applications that use an early render pass
to determine the full set of primitives that would be visible in the final
scene. In this render pass, such applications would set up a fragment
shader that enables early fragment tests and writes to an image or shader
storage buffer to record the ID of the primitive that generated the
fragment. Without this extension, the shader would record the ID
separately for each visible fragment of each primitive. With this
extension, fewer stores will be performed, particularly for large
primitives.
The representative fragment test has no effect if early fragment tests are
not enabled via the fragment shader. The set of fragments discarded by the
representative fragment test is implementation-dependent and may vary from
frame to frame. In some cases, the representative fragment test may not
discard any fragments for a given primitive.
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/NV/representative_fragment_test.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.NV.representative_fragment_test import *
from OpenGL.raw.GL.NV.representative_fragment_test import _EXTENSION_NAME
def glInitRepresentativeFragmentTestNV():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
### END AUTOGENERATED SECTION
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