80 lines
3.1 KiB
Python
80 lines
3.1 KiB
Python
# ----------------------------------------------------------------------------
|
|
# pyglet
|
|
# Copyright (c) 2006-2008 Alex Holkner
|
|
# Copyright (c) 2008-2022 pyglet contributors
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
#
|
|
# * Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# * Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in
|
|
# the documentation and/or other materials provided with the
|
|
# distribution.
|
|
# * Neither the name of pyglet nor the names of its
|
|
# contributors may be used to endorse or promote products
|
|
# derived from this software without specific prior written
|
|
# permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
# POSSIBILITY OF SUCH DAMAGE.
|
|
# ----------------------------------------------------------------------------
|
|
|
|
from ctypes import *
|
|
from typing import Any, Callable
|
|
|
|
import pyglet.lib
|
|
from pyglet.gl.lib import missing_function, decorate_function
|
|
|
|
from pyglet.util import asbytes
|
|
|
|
__all__ = ['link_GL', 'link_GLX']
|
|
|
|
gl_lib = pyglet.lib.load_library('GL')
|
|
|
|
# Look for glXGetProcAddressARB extension, use it as fallback (for ATI fglrx and DRI drivers).
|
|
try:
|
|
glXGetProcAddressARB = getattr(gl_lib, 'glXGetProcAddressARB')
|
|
glXGetProcAddressARB.restype = POINTER(CFUNCTYPE(None))
|
|
glXGetProcAddressARB.argtypes = [POINTER(c_ubyte)]
|
|
_have_getprocaddress = True
|
|
except AttributeError:
|
|
_have_getprocaddress = False
|
|
|
|
|
|
def link_GL(name, restype, argtypes, requires=None, suggestions=None) -> Callable[..., Any]:
|
|
try:
|
|
func = getattr(gl_lib, name)
|
|
func.restype = restype
|
|
func.argtypes = argtypes
|
|
decorate_function(func, name)
|
|
return func
|
|
except AttributeError:
|
|
if _have_getprocaddress:
|
|
# Fallback if implemented but not in ABI
|
|
bname = cast(pointer(create_string_buffer(asbytes(name))), POINTER(c_ubyte))
|
|
addr = glXGetProcAddressARB(bname)
|
|
if addr:
|
|
ftype = CFUNCTYPE(*((restype,) + tuple(argtypes)))
|
|
func = cast(addr, ftype)
|
|
decorate_function(func, name)
|
|
return func
|
|
|
|
return missing_function(name, requires, suggestions)
|
|
|
|
|
|
link_GLX = link_GL
|