335 lines
10 KiB
Python
335 lines
10 KiB
Python
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# (C) Copyright IBM Corporation 2004, 2005
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# All Rights Reserved.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# on the rights to use, copy, modify, merge, publish, distribute, sub
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# license, and/or sell copies of the Software, and to permit persons to whom
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# the Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice (including the next
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# paragraph) shall be included in all copies or substantial portions of the
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# Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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#
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# Authors:
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# Ian Romanick <idr@us.ibm.com>
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import argparse
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import gl_XML, glX_XML
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import license
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class PrintGlOffsets(gl_XML.gl_print_base):
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def __init__(self, es=False):
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gl_XML.gl_print_base.__init__(self)
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self.name = "gl_apitemp.py (from Mesa)"
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self.license = license.bsd_license_template % ( \
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"""Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
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(C) Copyright IBM Corporation 2004""", "BRIAN PAUL, IBM")
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self.es = es
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self.undef_list.append( "KEYWORD1" )
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self.undef_list.append( "KEYWORD1_ALT" )
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self.undef_list.append( "KEYWORD2" )
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self.undef_list.append( "NAME" )
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self.undef_list.append( "DISPATCH" )
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self.undef_list.append( "RETURN_DISPATCH" )
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self.undef_list.append( "DISPATCH_TABLE_NAME" )
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self.undef_list.append( "UNUSED_TABLE_NAME" )
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self.undef_list.append( "TABLE_ENTRY" )
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def printFunction(self, f, name):
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p_string = ""
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o_string = ""
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t_string = ""
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comma = ""
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if f.is_static_entry_point(name):
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keyword = "KEYWORD1"
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else:
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keyword = "KEYWORD1_ALT"
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n = f.static_name(name)
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silence = ''
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space = ''
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for p in f.parameterIterator(name):
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if p.is_padding:
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continue
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if p.is_pointer():
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cast = "(const void *) "
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else:
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cast = ""
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t_string = t_string + comma + p.format_string()
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p_string = p_string + comma + p.name
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o_string = o_string + comma + cast + p.name
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comma = ", "
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silence += "%s(void) %s;" % (space, p.name);
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space = ' '
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if f.return_type != 'void':
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dispatch = "RETURN_DISPATCH"
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else:
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dispatch = "DISPATCH"
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need_proto = False
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if not f.is_static_entry_point(name):
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need_proto = True
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elif self.es:
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cat, num = api.get_category_for_name(name)
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if (cat.startswith("es") or cat.startswith("GL_OES")):
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need_proto = True
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if need_proto:
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print('%s %s KEYWORD2 NAME(%s)(%s);' % (keyword, f.return_type, n, f.get_parameter_string(name)))
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print('')
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print('%s %s KEYWORD2 NAME(%s)(%s)' % (keyword, f.return_type, n, f.get_parameter_string(name)))
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print('{')
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if silence:
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print(' %s' % (silence))
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if p_string == "":
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print(' %s(%s, (), (F, "gl%s();\\n"));' \
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% (dispatch, f.name, name))
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else:
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print(' %s(%s, (%s), (F, "gl%s(%s);\\n", %s));' \
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% (dispatch, f.name, p_string, name, t_string, o_string))
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print('}')
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print('')
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return
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def printRealHeader(self):
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print('')
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self.printVisibility( "HIDDEN", "hidden" )
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print("""
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/*
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* This file is a template which generates the OpenGL API entry point
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* functions. It should be included by a .c file which first defines
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* the following macros:
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* KEYWORD1 - usually nothing, but might be __declspec(dllexport) on Win32
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* KEYWORD2 - usually nothing, but might be __stdcall on Win32
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* NAME(n) - builds the final function name (usually add "gl" prefix)
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* DISPATCH(func, args, msg) - code to do dispatch of named function.
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* msg is a printf-style debug message.
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* RETURN_DISPATCH(func, args, msg) - code to do dispatch with a return value
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*
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* Here is an example which generates the usual OpenGL functions:
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* #define KEYWORD1
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* #define KEYWORD2
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* #define NAME(func) gl##func
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* #define DISPATCH(func, args, msg) \\
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* struct _glapi_table *dispatch = CurrentClientDispatch; \\
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* (*dispatch->func) args
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* #define RETURN DISPATCH(func, args, msg) \\
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* struct _glapi_table *dispatch = CurrentClientDispatch; \\
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* return (*dispatch->func) args
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*
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*/
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#if defined( NAME )
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#ifndef KEYWORD1
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#define KEYWORD1
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#endif
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#ifndef KEYWORD1_ALT
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#define KEYWORD1_ALT HIDDEN
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#endif
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#ifndef KEYWORD2
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#define KEYWORD2
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#endif
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#ifndef DISPATCH
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#error DISPATCH must be defined
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#endif
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#ifndef RETURN_DISPATCH
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#error RETURN_DISPATCH must be defined
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#endif
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#ifdef MemoryBarrier
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#undef MemoryBarrier
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#endif
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""")
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return
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def printInitDispatch(self, api):
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print("""
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#endif /* defined( NAME ) */
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/*
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* This is how a dispatch table can be initialized with all the functions
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* we generated above.
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*/
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#ifdef DISPATCH_TABLE_NAME
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#ifndef TABLE_ENTRY
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#error TABLE_ENTRY must be defined
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#endif
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#ifdef _GLAPI_SKIP_NORMAL_ENTRY_POINTS
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#error _GLAPI_SKIP_NORMAL_ENTRY_POINTS must not be defined
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#endif
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_glapi_proc DISPATCH_TABLE_NAME[] = {""")
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for f in api.functionIterateByOffset():
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print(' TABLE_ENTRY(%s),' % (f.dispatch_name()))
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print(' /* A whole bunch of no-op functions. These might be called')
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print(' * when someone tries to call a dynamically-registered')
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print(' * extension function without a current rendering context.')
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print(' */')
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for i in range(1, 100):
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print(' TABLE_ENTRY(Unused),')
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print('};')
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print('#endif /* DISPATCH_TABLE_NAME */')
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print('')
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return
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def printAliasedTable(self, api):
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print("""
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/*
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* This is just used to silence compiler warnings.
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* We list the functions which are not otherwise used.
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*/
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#ifdef UNUSED_TABLE_NAME
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_glapi_proc UNUSED_TABLE_NAME[] = {""")
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normal_entries = []
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proto_entries = []
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for f in api.functionIterateByOffset():
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normal_ents, proto_ents = self.classifyEntryPoints(f)
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# exclude f.name
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if f.name in normal_ents:
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normal_ents.remove(f.name)
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elif f.name in proto_ents:
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proto_ents.remove(f.name)
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normal_ents = [f.static_name(ent) for ent in normal_ents]
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proto_ents = [f.static_name(ent) for ent in proto_ents]
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normal_entries.extend(normal_ents)
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proto_entries.extend(proto_ents)
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print('#ifndef _GLAPI_SKIP_NORMAL_ENTRY_POINTS')
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for ent in normal_entries:
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print(' TABLE_ENTRY(%s),' % (ent))
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print('#endif /* _GLAPI_SKIP_NORMAL_ENTRY_POINTS */')
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print('#ifndef _GLAPI_SKIP_PROTO_ENTRY_POINTS')
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for ent in proto_entries:
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print(' TABLE_ENTRY(%s),' % (ent))
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print('#endif /* _GLAPI_SKIP_PROTO_ENTRY_POINTS */')
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print('};')
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print('#endif /*UNUSED_TABLE_NAME*/')
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print('')
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return
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def classifyEntryPoints(self, func):
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normal_names = []
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normal_stubs = []
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proto_names = []
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proto_stubs = []
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# classify the entry points
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for name in func.entry_points:
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if func.has_different_protocol(name):
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if func.is_static_entry_point(name):
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proto_names.append(name)
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else:
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proto_stubs.append(name)
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else:
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if func.is_static_entry_point(name):
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normal_names.append(name)
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else:
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normal_stubs.append(name)
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# there can be at most one stub for a function
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if normal_stubs:
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normal_names.append(normal_stubs[0])
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elif proto_stubs:
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proto_names.append(proto_stubs[0])
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return (normal_names, proto_names)
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def printBody(self, api):
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normal_entry_points = []
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proto_entry_points = []
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for func in api.functionIterateByOffset():
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normal_ents, proto_ents = self.classifyEntryPoints(func)
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normal_entry_points.append((func, normal_ents))
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proto_entry_points.append((func, proto_ents))
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print('#ifndef _GLAPI_SKIP_NORMAL_ENTRY_POINTS')
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print('')
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for func, ents in normal_entry_points:
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for ent in ents:
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self.printFunction(func, ent)
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print('')
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print('#endif /* _GLAPI_SKIP_NORMAL_ENTRY_POINTS */')
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print('')
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print('/* these entry points might require different protocols */')
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print('#ifndef _GLAPI_SKIP_PROTO_ENTRY_POINTS')
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print('')
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for func, ents in proto_entry_points:
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for ent in ents:
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self.printFunction(func, ent)
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print('')
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print('#endif /* _GLAPI_SKIP_PROTO_ENTRY_POINTS */')
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print('')
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self.printInitDispatch(api)
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self.printAliasedTable(api)
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return
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def _parser():
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"""Parser arguments and return a namespace."""
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parser = argparse.ArgumentParser()
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parser.add_argument('-f',
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metavar='<input file name>',
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dest='filename',
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default="gl_API.xml",
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help="An XML file describing the API.")
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parser.add_argument('-c',
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action='store_true',
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dest='es',
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help="Enable OpenGL ES compatibility")
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return parser.parse_args()
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def main():
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"""Main function."""
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args = _parser()
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api = gl_XML.parse_GL_API(args.filename, glX_XML.glx_item_factory())
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printer = PrintGlOffsets(args.es)
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printer.Print(api)
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if __name__ == '__main__':
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main()
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