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'''OpenGL extension VERSION.GL_1_5
This module customises the behaviour of the
OpenGL.raw.GL.VERSION.GL_1_5 to provide a more
Python-friendly API
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/VERSION/GL_1_5.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.VERSION.GL_1_5 import *
from OpenGL.raw.GL.VERSION.GL_1_5 import _EXTENSION_NAME
def glInitGl15VERSION():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
glGenQueries=wrapper.wrapper(glGenQueries).setOutput(
'ids',size=lambda x:(x,),pnameArg='n',orPassIn=True
)
# INPUT glDeleteQueries.ids size not checked against n
glDeleteQueries=wrapper.wrapper(glDeleteQueries).setInputArraySize(
'ids', None
)
glGetQueryiv=wrapper.wrapper(glGetQueryiv).setOutput(
'params',size=_glgets._glget_size_mapping,pnameArg='pname',orPassIn=True
)
glGetQueryObjectiv=wrapper.wrapper(glGetQueryObjectiv).setOutput(
'params',size=_glgets._glget_size_mapping,pnameArg='pname',orPassIn=True
)
glGetQueryObjectuiv=wrapper.wrapper(glGetQueryObjectuiv).setOutput(
'params',size=_glgets._glget_size_mapping,pnameArg='pname',orPassIn=True
)
# INPUT glDeleteBuffers.buffers size not checked against n
glDeleteBuffers=wrapper.wrapper(glDeleteBuffers).setInputArraySize(
'buffers', None
)
glGenBuffers=wrapper.wrapper(glGenBuffers).setOutput(
'buffers',size=lambda x:(x,),pnameArg='n',orPassIn=True
)
# INPUT glBufferData.data size not checked against size
glBufferData=wrapper.wrapper(glBufferData).setInputArraySize(
'data', None
)
# INPUT glBufferSubData.data size not checked against size
glBufferSubData=wrapper.wrapper(glBufferSubData).setInputArraySize(
'data', None
)
glGetBufferSubData=wrapper.wrapper(glGetBufferSubData).setOutput(
'data',size=lambda x:(x,),pnameArg='size',orPassIn=True
)
glGetBufferParameteriv=wrapper.wrapper(glGetBufferParameteriv).setOutput(
'params',size=_glgets._glget_size_mapping,pnameArg='pname',orPassIn=True
)
glGetBufferPointerv=wrapper.wrapper(glGetBufferPointerv).setOutput(
'params',size=(1,),orPassIn=True
)
### END AUTOGENERATED SECTION
from OpenGL.lazywrapper import lazy as _lazy
from OpenGL.arrays import ArrayDatatype
from OpenGL._bytes import integer_types
@_lazy( glBufferData )
def glBufferData( baseOperation, target, size, data=None, usage=None ):
"""Copy given data into the currently bound vertex-buffer-data object
target -- the symbolic constant indicating which buffer type is intended
size -- if provided, the count-in-bytes of the array
data -- data-pointer to be used, may be None to initialize without
copying over a data-set
usage -- hint to the driver as to how to set up access to the buffer
Note: parameter "size" can be omitted, which makes the signature
glBufferData( target, data, usage )
instead of:
glBufferData( target, size, data, usage )
"""
if usage is None:
usage = data
data = size
size = None
data = ArrayDatatype.asArray( data )
if size is None:
size = ArrayDatatype.arrayByteCount( data )
return baseOperation( target, size, data, usage )
@_lazy( glBufferSubData )
def glBufferSubData( baseOperation, target, offset, size=None, data=None ):
"""Copy subset of data into the currently bound vertex-buffer-data object
target -- the symbolic constant indicating which buffer type is intended
offset -- offset from beginning of buffer at which to copy bytes
size -- the count-in-bytes of the array (if an int/long), if None,
calculate size from data, if an array and data is None, use as
data (i.e. the parameter can be omitted and calculated)
data -- data-pointer to be used, may be None to initialize without
copying over a data-set
Note that if size is not an int/long it is considered to be data
*iff* data is None
"""
if size is None:
if data is None:
raise TypeError( "Need data or size" )
elif (not isinstance( size, integer_types)) and (data is None):
data = size
size = None
try:
if size is not None:
size = int( size )
except TypeError:
if data is not None:
raise TypeError(
"""Expect an integer size *or* a data-array, not both"""
)
data = size
size = None
data = ArrayDatatype.asArray( data )
if size is None:
size = ArrayDatatype.arrayByteCount( data )
return baseOperation( target, offset, size, data )
@_lazy( glGetBufferPointerv )
def glGetBufferPointerv( baseOperation, target, pname, params=None ):
"""Retrieve a ctypes pointer to buffer's data"""
if params is None:
size = glGetBufferParameteriv( target, GL_BUFFER_SIZE )
data = arrays.ArrayDatatype.zeros( (size,), GL_UNSIGNED_BYTE )
baseOperation( target, pname, ctypes.byref( data ) )
return data
else:
return baseOperation( target, pname, params )
@_lazy( glDeleteQueries )
def glDeleteQueries( baseOperation, n, ids=None ):
if ids is None:
ids = arrays.GLuintArray.asArray( n )
n = arrays.GLuintArray.arraySize( ids )
else:
ids = arrays.GLuintArray.asArray( ids )
return baseOperation( n,ids )
@_lazy( glGenQueries )
def glGenQueries( baseOperation, n, ids=None ):
"""Generate n queries, if ids is None, is allocated
returns array of ids
"""
if ids is None:
ids = arrays.GLuintArray.zeros( (n,))
else:
ids = arrays.GLuintArray.asArray( ids )
baseOperation( n, ids )
return ids
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