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# Patch to the array size of glBufferDataARB, which should be the size in bytes,
# not the array size (number of elements.) glBufferSubDataARB has the same bug.
#
# From PyOpenGL-3.0.0a6-py2.5.egg/OpenGL/GL/ARB/vertex_buffer_object.py
from OpenGL import platform, constants, constant, arrays
from OpenGL import extensions, wrapper
from OpenGL.GL import glget
import ctypes
from OpenGL.raw.GL.ARB.vertex_buffer_object import *
def _sizeOfArrayInput( pyArgs, index, wrapper ):
return (
# Was arraySize.
arrays.ArrayDatatype.arrayByteCount( pyArgs[index] )
)
glBufferDataARB = wrapper.wrapper( glBufferDataARB ).setPyConverter(
'data', arrays.asVoidArray(),
).setPyConverter( 'size' ).setCResolver(
'data', arrays.ArrayDatatype.voidDataPointer ,
).setCConverter(
'size', _sizeOfArrayInput,
).setReturnValues(
wrapper.returnPyArgument( 'data' )
)
glBufferSubDataARB = wrapper.wrapper( glBufferSubDataARB ).setPyConverter(
'data', arrays.asVoidArray(),
).setPyConverter( 'size' ).setCResolver(
'data', arrays.ArrayDatatype.voidDataPointer ,
).setCConverter(
'size', _sizeOfArrayInput,
).setReturnValues(
wrapper.returnPyArgument( 'data' )
)
# For VBO drawing, the "indices" argument to glMultiDrawElements is an array of
# byte offsets within the bound Index Buffer Object in graphics card RAM, rather
# than of an array of pointers to parts of client-side index arrays. See the
# docs for glBindBuffer, glDrawElements, and glMultiDrawElements.
#
# Changed the "indices" argument type from ctypes.POINTER(ctypes.c_void_p) to
# arrays.GLintArray, like the "first" argument of glMultiDrawArrays.
glMultiDrawElementsVBO = platform.createExtensionFunction(
'glMultiDrawElementsEXT', dll=platform.GL,
resultType=None,
argTypes=(constants.GLenum, arrays.GLsizeiArray,
constants.GLenum, arrays.GLintArray, constants.GLsizei,),
doc = ('glMultiDrawElementsEXT( GLenum(mode), GLsizeiArray(count), '
'GLenum(type), GLintArray(indices), GLsizei(primcount) ) -> None'),
argNames = ('mode', 'count', 'type', 'indices', 'primcount',),
)
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