91 lines
3.4 KiB
Python
91 lines
3.4 KiB
Python
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# ----------------------------------------------------------------------------
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# pyglet
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# Copyright (c) 2006-2008 Alex Holkner
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# Copyright (c) 2008-2021 pyglet contributors
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of pyglet nor the names of its
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# contributors may be used to endorse or promote products
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# derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# ----------------------------------------------------------------------------
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from ctypes import *
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import pyglet.lib
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from pyglet.gl.lib import missing_function, decorate_function
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from pyglet.util import asbytes
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__all__ = ['link_GL', 'link_GLU', 'link_GLX']
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gl_lib = pyglet.lib.load_library('GL')
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glu_lib = pyglet.lib.load_library('GLU')
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# Look for glXGetProcAddressARB extension, use it as fallback (for ATI fglrx and DRI drivers).
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try:
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glXGetProcAddressARB = getattr(gl_lib, 'glXGetProcAddressARB')
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glXGetProcAddressARB.restype = POINTER(CFUNCTYPE(None))
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glXGetProcAddressARB.argtypes = [POINTER(c_ubyte)]
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_have_getprocaddress = True
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except AttributeError:
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_have_getprocaddress = False
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def link_GL(name, restype, argtypes, requires=None, suggestions=None):
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try:
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func = getattr(gl_lib, name)
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func.restype = restype
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func.argtypes = argtypes
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decorate_function(func, name)
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return func
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except AttributeError:
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if _have_getprocaddress:
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# Fallback if implemented but not in ABI
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bname = cast(pointer(create_string_buffer(asbytes(name))), POINTER(c_ubyte))
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addr = glXGetProcAddressARB(bname)
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if addr:
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ftype = CFUNCTYPE(*((restype,) + tuple(argtypes)))
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func = cast(addr, ftype)
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decorate_function(func, name)
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return func
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return missing_function(name, requires, suggestions)
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link_GLX = link_GL
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def link_GLU(name, restype, argtypes, requires=None, suggestions=None):
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try:
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func = getattr(glu_lib, name)
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func.restype = restype
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func.argtypes = argtypes
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decorate_function(func, name)
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return func
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except AttributeError:
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return missing_function(name, requires, suggestions)
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