2021-04-16 23:21:06 +08:00
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# ----------------------------------------------------------------------------
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# pyglet
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# Copyright (c) 2006-2008 Alex Holkner
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2021-04-17 01:14:38 +08:00
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# Copyright (c) 2008-2021 pyglet contributors
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2021-04-16 23:21:06 +08:00
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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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"""Cached information about version and extensions of current WGL
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implementation.
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"""
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from ctypes import *
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import warnings
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from pyglet.gl.lib import MissingFunctionException
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from pyglet.gl.gl import *
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from pyglet.gl import gl_info
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from pyglet.gl.wgl import *
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from pyglet.gl.wglext_arb import *
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from pyglet.util import asstr
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class WGLInfoException(Exception):
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pass
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class WGLInfo:
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def get_extensions(self):
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if not gl_info.have_context():
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warnings.warn("Can't query WGL until a context is created.")
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return []
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try:
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return asstr(wglGetExtensionsStringEXT()).split()
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except MissingFunctionException:
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return asstr(cast(glGetString(GL_EXTENSIONS), c_char_p).value).split()
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def have_extension(self, extension):
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return extension in self.get_extensions()
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_wgl_info = WGLInfo()
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get_extensions = _wgl_info.get_extensions
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have_extension = _wgl_info.have_extension
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