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'''OpenGL extension NV.primitive_shading_rate
This module customises the behaviour of the
OpenGL.raw.GLES2.NV.primitive_shading_rate to provide a more
Python-friendly API
Overview (from the spec)
This extension builds on top of the NV_shading_rate_image extension to
provide OpenGL API support for using a per-primitive shading rate value to
control the computation of the rate used to process each fragment.
In the NV_shading_rate_image extension, the shading rate for each fragment
produced by a primitive is determined by looking up a texel in the bound
shading rate image and using that value as an index into a shading rate
palette. That extension provides a separate shading rate image lookup
enable and palette for each viewport. When a primitive is rasterized, the
implementation uses the enable and palette associated with the primitive's
viewport to determine the shading rate.
This extension decouples the shading rate image enables and palettes from
viewports. The number of enables/palettes now comes from the
implementation-dependent constant SHADING_RATE_IMAGE_PALETTE_COUNT_NV. When
SHADING_RATE_IMAGE_PER_PRIMITIVE_NV (added here) is enabled, the value of
the new gl_ShadingRateNV built-in output is used to select an enable and
palette to determine the shading rate. Otherwise, the viewport number for
the primitive is used, as in NV_shading_rate_image.
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/NV/primitive_shading_rate.txt
'''
from OpenGL import platform, constant, arrays
from OpenGL import extensions, wrapper
import ctypes
from OpenGL.raw.GLES2 import _types, _glgets
from OpenGL.raw.GLES2.NV.primitive_shading_rate import *
from OpenGL.raw.GLES2.NV.primitive_shading_rate import _EXTENSION_NAME
def glInitPrimitiveShadingRateNV():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
### END AUTOGENERATED SECTION
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