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'''OpenGL extension EXT.histogram
This module customises the behaviour of the
OpenGL.raw.GL.EXT.histogram to provide a more
Python-friendly API
Overview (from the spec)
This extension defines pixel operations that count occurences of
specific color component values (histogram) and that track the minimum
and maximum color component values (minmax). An optional mode allows
pixel data to be discarded after the histogram and/or minmax operations
are completed. Otherwise the pixel data continue on to the next
operation unaffected.
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/EXT/histogram.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.EXT.histogram import *
from OpenGL.raw.GL.EXT.histogram import _EXTENSION_NAME
def glInitHistogramEXT():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
# OUTPUT glGetHistogramEXT.values COMPSIZE(target,format,type)
glGetHistogramParameterfvEXT=wrapper.wrapper(glGetHistogramParameterfvEXT).setOutput(
'params',size=_glgets._glget_size_mapping,pnameArg='pname',orPassIn=True
)
glGetHistogramParameterivEXT=wrapper.wrapper(glGetHistogramParameterivEXT).setOutput(
'params',size=_glgets._glget_size_mapping,pnameArg='pname',orPassIn=True
)
# OUTPUT glGetMinmaxEXT.values COMPSIZE(target,format,type)
glGetMinmaxParameterfvEXT=wrapper.wrapper(glGetMinmaxParameterfvEXT).setOutput(
'params',size=_glgets._glget_size_mapping,pnameArg='pname',orPassIn=True
)
glGetMinmaxParameterivEXT=wrapper.wrapper(glGetMinmaxParameterivEXT).setOutput(
'params',size=_glgets._glget_size_mapping,pnameArg='pname',orPassIn=True
)
### END AUTOGENERATED SECTION
glGetHistogramParameterfvEXT = wrapper.wrapper(glGetHistogramParameterfvEXT).setOutput(
"params",(1,), orPassIn=True
)
glGetHistogramParameterivEXT = wrapper.wrapper(glGetHistogramParameterivEXT).setOutput(
"params",(1,), orPassIn=True
)
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