/usr/lib/python2.7/dist-packages/pyglet/gl/lib.py is in python-pyglet 1.1.4.dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 | # ----------------------------------------------------------------------------
# pyglet
# Copyright (c) 2006-2008 Alex Holkner
# 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.
# ----------------------------------------------------------------------------
'''
'''
__docformat__ = 'restructuredtext'
__version__ = '$Id: lib.py 1978 2008-03-28 15:11:48Z Alex.Holkner $'
import sys
import ctypes
import pyglet
__all__ = ['link_GL', 'link_GLU', 'link_AGL', 'link_GLX', 'link_WGL']
_debug_gl = pyglet.options['debug_gl']
_debug_gl_trace = pyglet.options['debug_gl_trace']
_debug_gl_trace_args = pyglet.options['debug_gl_trace_args']
class MissingFunctionException(Exception):
def __init__(self, name, requires=None, suggestions=None):
msg = '%s is not exported by the available OpenGL driver.' % name
if requires:
msg += ' %s is required for this functionality.' % requires
if suggestions:
msg += ' Consider alternative(s) %s.' % ', '.join(suggestions)
Exception.__init__(self, msg)
def missing_function(name, requires=None, suggestions=None):
def MissingFunction(*args, **kwargs):
raise MissingFunctionException(name, requires, suggestions)
return MissingFunction
_int_types = (ctypes.c_int16, ctypes.c_int32)
if hasattr(ctypes, 'c_int64'):
# Some builds of ctypes apparently do not have c_int64
# defined; it's a pretty good bet that these builds do not
# have 64-bit pointers.
_int_types += (ctypes.c_int64,)
for t in _int_types:
if ctypes.sizeof(t) == ctypes.sizeof(ctypes.c_size_t):
c_ptrdiff_t = t
class c_void(ctypes.Structure):
# c_void_p is a buggy return type, converting to int, so
# POINTER(None) == c_void_p is actually written as
# POINTER(c_void), so it can be treated as a real pointer.
_fields_ = [('dummy', ctypes.c_int)]
class GLException(Exception):
pass
def errcheck(result, func, arguments):
if _debug_gl_trace:
try:
name = func.__name__
except AttributeError:
name = repr(func)
if _debug_gl_trace_args:
trace_args = ', '.join([repr(arg)[:20] for arg in arguments])
print '%s(%s)' % (name, trace_args)
else:
print name
from pyglet import gl
context = gl.current_context
if not context:
raise GLException('No GL context; create a Window first')
if not context._gl_begin:
error = gl.glGetError()
if error:
msg = ctypes.cast(gl.gluErrorString(error), ctypes.c_char_p).value
raise GLException(msg)
return result
def errcheck_glbegin(result, func, arguments):
from pyglet import gl
context = gl.current_context
if not context:
raise GLException('No GL context; create a Window first')
context._gl_begin = True
return result
def errcheck_glend(result, func, arguments):
from pyglet import gl
context = gl.current_context
if not context:
raise GLException('No GL context; create a Window first')
context._gl_begin = False
return errcheck(result, func, arguments)
def decorate_function(func, name):
if _debug_gl:
if name == 'glBegin':
func.errcheck = errcheck_glbegin
elif name == 'glEnd':
func.errcheck = errcheck_glend
elif name not in ('glGetError', 'gluErrorString') and \
name[:3] not in ('glX', 'agl', 'wgl'):
func.errcheck = errcheck
link_AGL = None
link_GLX = None
link_WGL = None
if sys.platform in ('win32', 'cygwin'):
from pyglet.gl.lib_wgl import link_GL, link_GLU, link_WGL
elif sys.platform == 'darwin':
from pyglet.gl.lib_agl import link_GL, link_GLU, link_AGL
else:
from pyglet.gl.lib_glx import link_GL, link_GLU, link_GLX
|