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#!/usr/bin/env python
# encoding=utf-8
# © Copyright IBM Corporation 2004, 2005
# All Rights Reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# on the rights to use, copy, modify, merge, publish, distribute, sub
# license, and/or sell copies of the Software, and to permit persons to whom
# the Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
#
# Authors:
# Ian Romanick <idr@us.ibm.com>
import argparse
import textwrap
import license
import gl_XML
import glX_XML
class PrintGlProcs(gl_XML.gl_print_base):
def __init__(self, es=False):
gl_XML.gl_print_base.__init__(self)
self.es = es
self.name = "gl_procs.py (from Mesa)"
self.license = license.bsd_license_template % ( \
textwrap.dedent("""\
Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
(C) Copyright IBM Corporation 2004, 2006"""),
"BRIAN PAUL, IBM")
def printRealHeader(self):
print textwrap.dedent("""\
/* This file is only included by glapi.c and is used for
* the GetProcAddress() function
*/
typedef struct {
GLint Name_offset;
#if defined(NEED_FUNCTION_POINTER) || defined(GLX_INDIRECT_RENDERING)
_glapi_proc Address;
#endif
GLuint Offset;
} glprocs_table_t;
#if !defined(NEED_FUNCTION_POINTER) && !defined(GLX_INDIRECT_RENDERING)
# define NAME_FUNC_OFFSET(n,f1,f2,f3,o) { n , o }
#elif defined(NEED_FUNCTION_POINTER) && !defined(GLX_INDIRECT_RENDERING)
# define NAME_FUNC_OFFSET(n,f1,f2,f3,o) { n , (_glapi_proc) f1 , o }
#elif defined(NEED_FUNCTION_POINTER) && defined(GLX_INDIRECT_RENDERING)
# define NAME_FUNC_OFFSET(n,f1,f2,f3,o) { n , (_glapi_proc) f2 , o }
#elif !defined(NEED_FUNCTION_POINTER) && defined(GLX_INDIRECT_RENDERING)
# define NAME_FUNC_OFFSET(n,f1,f2,f3,o) { n , (_glapi_proc) f3 , o }
#endif
""")
return
def printRealFooter(self):
print ''
print '#undef NAME_FUNC_OFFSET'
return
def printFunctionString(self, name):
print ' "gl%s\\0"' % (name)
def printBody(self, api):
print ''
print 'static const char gl_string_table[] ='
base_offset = 0
table = []
for func in api.functionIterateByOffset():
name = func.dispatch_name()
self.printFunctionString(func.name)
table.append((base_offset, "gl" + name, "gl" + name, "NULL", func.offset))
# The length of the function's name, plus 2 for "gl",
# plus 1 for the NUL.
base_offset += len(func.name) + 3
for func in api.functionIterateByOffset():
for n in func.entry_points:
if n != func.name:
name = func.dispatch_name()
self.printFunctionString( n )
if func.has_different_protocol(n):
alt_name = "gl" + func.static_glx_name(n)
table.append((base_offset, "gl" + name, alt_name, alt_name, func.offset))
else:
table.append((base_offset, "gl" + name, "gl" + name, "NULL", func.offset))
base_offset += len(n) + 3
print ' ;'
print ''
print ''
print "#ifdef USE_MGL_NAMESPACE"
for func in api.functionIterateByOffset():
for n in func.entry_points:
if (not func.is_static_entry_point(func.name)) or (func.has_different_protocol(n) and not func.is_static_entry_point(n)):
print '#define gl_dispatch_stub_%u mgl_dispatch_stub_%u' % (func.offset, func.offset)
break
print "#endif /* USE_MGL_NAMESPACE */"
print ''
print ''
print '#if defined(NEED_FUNCTION_POINTER) || defined(GLX_INDIRECT_RENDERING)'
for func in api.functionIterateByOffset():
for n in func.entry_points:
if (not func.is_static_entry_point(func.name)) or (func.has_different_protocol(n) and not func.is_static_entry_point(n)):
print '%s GLAPIENTRY gl_dispatch_stub_%u(%s);' % (func.return_type, func.offset, func.get_parameter_string())
break
if self.es:
categories = {}
for func in api.functionIterateByOffset():
for n in func.entry_points:
cat, num = api.get_category_for_name(n)
if (cat.startswith("es") or cat.startswith("GL_OES")):
if not categories.has_key(cat):
categories[cat] = []
proto = 'GLAPI %s GLAPIENTRY %s(%s);' \
% (func.return_type, "gl" + n, func.get_parameter_string(n))
categories[cat].append(proto)
if categories:
print ''
print '/* OpenGL ES specific prototypes */'
print ''
keys = categories.keys()
keys.sort()
for key in keys:
print '/* category %s */' % key
print "\n".join(categories[key])
print ''
print '#endif /* defined(NEED_FUNCTION_POINTER) || defined(GLX_INDIRECT_RENDERING) */'
print ''
print 'static const glprocs_table_t static_functions[] = {'
for info in table:
print ' NAME_FUNC_OFFSET(%5u, %s, %s, %s, %d),' % info
print ' NAME_FUNC_OFFSET(-1, NULL, NULL, NULL, 0)'
print '};'
return
def _parser():
"""Parse arguments and return a namepsace."""
parser = argparse.ArgumentParser()
parser.add_argument('-f', '--filename',
default='gl_API.xml',
metavar="input_file_name",
dest='file_name',
help="Path to an XML description of OpenGL API.")
parser.add_argument('-c', '--es-version',
dest='es',
action="store_true",
help="filter functions for es")
return parser.parse_args()
def main():
"""Main function."""
args = _parser()
api = gl_XML.parse_GL_API(args.file_name, glX_XML.glx_item_factory())
PrintGlProcs(args.es).Print(api)
if __name__ == '__main__':
main()
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