'''OpenGL extension EXT.framebuffer_multisample_blit_scaled

This module customises the behaviour of the 
OpenGL.raw.GL.EXT.framebuffer_multisample_blit_scaled to provide a more 
Python-friendly API

Overview (from the spec)
	
	This extension relaxes some of the restrictions associated with
	multisample resolve operations, specifically to allow a combined
	resolve and scale operation through a single call to BlitFramebuffer.
	It also adds two new filter types to control the quality of the
	combined scaled resolve operation.
	
	In traditional multisampled framebuffer rendering, color samples
	must be explicitly resolved via BlitFramebuffer before any other
	operation on the resulting pixel values can be performed.  This
	multisample resolve operation must be done using a BlitFramebuffer
	call where the dimensions of the source and destination rectangles
	are identical.  If the resulting pixel values need to be copied to a
	texture with different dimensions, these resolved values can then be
	scaled with a second call to BlitFramebuffer.
	
	By requiring two separate calls to BlitFramebuffer, the quality
	of final image can be maintained to a certain degree.  The samples
	are first resolved, and then these resolved values can be filtered
	to produce the final image.  This image quality comes at the price
	of increased memory usage and lower performance.  However, the
	scaling blit can still introduce artifacts, particularly if it is
	done with a simple bilinear filter.
	
	The new filter types introduced by this extension allow the scaled
	resolve to be done with a single call to BlitFramebuffer.  Not all
	samples from the read framebuffer are required to be be used when
	producing the final pixel values, and there may be a loss in quality
	when compared to an image produced by a separate resolve and scale.
	However, the single-pass scaled resolve blit should be faster than
	the traditional two-pass resolve then scale blits.
	

The official definition of this extension is available here:
http://www.opengl.org/registry/specs/EXT/framebuffer_multisample_blit_scaled.txt
'''
from OpenGL import platform, constants, constant, arrays
from OpenGL import extensions, wrapper
from OpenGL.GL import glget
import ctypes
from OpenGL.raw.GL.EXT.framebuffer_multisample_blit_scaled import *
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