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'''OpenGL extension MESA.shader_integer_functions
This module customises the behaviour of the
OpenGL.raw.GL.MESA.shader_integer_functions to provide a more
Python-friendly API
Overview (from the spec)
GL_ARB_gpu_shader5 extends GLSL in a number of useful ways. Much of this
added functionality requires significant hardware support. There are many
aspects, however, that can be easily implmented on any GPU with "real"
integer support (as opposed to simulating integers using floating point
calculations).
This extension provides a set of new features to the OpenGL Shading
Language to support capabilities of these GPUs, extending the
capabilities of version 1.30 of the OpenGL Shading Language and version
3.00 of the OpenGL ES Shading Language. Shaders using the new
functionality provided by this extension should enable this
functionality via the construct
#extension GL_MESA_shader_integer_functions : require (or enable)
This extension provides a variety of new features for all shader types,
including:
* support for implicitly converting signed integer types to unsigned
types, as well as more general implicit conversion and function
overloading infrastructure to support new data types introduced by
other extensions;
* new built-in functions supporting:
* splitting a floating-point number into a significand and exponent
(frexp), or building a floating-point number from a significand and
exponent (ldexp);
* integer bitfield manipulation, including functions to find the
position of the most or least significant set bit, count the number
of one bits, and bitfield insertion, extraction, and reversal;
* extended integer precision math, including add with carry, subtract
with borrow, and extenended multiplication;
The resulting extension is a strict subset of GL_ARB_gpu_shader5.
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/MESA/shader_integer_functions.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.MESA.shader_integer_functions import *
from OpenGL.raw.GL.MESA.shader_integer_functions import _EXTENSION_NAME
def glInitShaderIntegerFunctionsMESA():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
### END AUTOGENERATED SECTION
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