143 lines
5.1 KiB
Python
143 lines
5.1 KiB
Python
# ----------------------------------------------------------------------------
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# pyglet
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# Copyright (c) 2006-2008 Alex Holkner
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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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'''Information about version and extensions of current GLX implementation.
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Usage::
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from pyglet.gl import glx_info
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if glx_info.have_extension('GLX_NV_float_buffer'):
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# ...
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Or, if using more than one display::
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from pyglet.gl.glx_info import GLXInfo
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info = GLXInfo(window._display)
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if info.get_server_vendor() == 'ATI':
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# ...
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'''
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__docformat__ = 'restructuredtext'
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__version__ = '$Id: glx_info.py 1579 2008-01-15 14:47:19Z Alex.Holkner $'
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from ctypes import *
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from pyglet.gl.glx import *
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from pyglet.gl.glx import Display
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class GLXInfoException(Exception):
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pass
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class GLXInfo(object):
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def __init__(self, display=None):
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self.display = display
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def set_display(self, display):
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self.display = cast(pointer(display), POINTER(Display))
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def check_display(self):
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if not self.display:
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raise GLXInfoException('No X11 display has been set yet.')
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def have_version(self, major, minor=0):
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self.check_display()
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if not glXQueryExtension(self.display, None, None):
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raise GLXInfoException('pyglet requires an X server with GLX')
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server_version = self.get_server_version().split()[0]
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client_version = self.get_client_version().split()[0]
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server = [int(i) for i in server_version.split('.')]
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client = [int(i) for i in client_version.split('.')]
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return (tuple(server) >= (major, minor) and
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tuple(client) >= (major, minor))
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def get_server_vendor(self):
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self.check_display()
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return glXQueryServerString(self.display, 0, GLX_VENDOR)
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def get_server_version(self):
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# glXQueryServerString was introduced in GLX 1.1, so we need to use the
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# 1.0 function here which queries the server implementation for its
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# version.
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self.check_display()
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major = c_int()
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minor = c_int()
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if not glXQueryVersion(self.display, byref(major), byref(minor)):
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raise GLXInfoException('Could not determine GLX server version')
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return '%s.%s'%(major.value, minor.value)
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def get_server_extensions(self):
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self.check_display()
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return glXQueryServerString(self.display, 0, GLX_EXTENSIONS).split()
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def get_client_vendor(self):
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self.check_display()
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return glXGetClientString(self.display, GLX_VENDOR)
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def get_client_version(self):
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self.check_display()
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return glXGetClientString(self.display, GLX_VERSION)
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def get_client_extensions(self):
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self.check_display()
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return glXGetClientString(self.display, GLX_EXTENSIONS).split()
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def get_extensions(self):
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self.check_display()
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return glXQueryExtensionsString(self.display, 0).split()
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def have_extension(self, extension):
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self.check_display()
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if not self.have_version(1, 1):
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return False
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return extension in self.get_extensions()
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# Single instance suitable for apps that use only a single display.
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_glx_info = GLXInfo()
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set_display = _glx_info.set_display
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check_display = _glx_info.check_display
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have_version = _glx_info.have_version
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get_server_vendor = _glx_info.get_server_vendor
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get_server_version = _glx_info.get_server_version
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get_server_extensions = _glx_info.get_server_extensions
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get_client_vendor = _glx_info.get_client_vendor
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get_client_version = _glx_info.get_client_version
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get_client_extensions = _glx_info.get_client_extensions
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get_extensions = _glx_info.get_extensions
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have_extension = _glx_info.have_extension
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