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# (C) Copyright IBM Corporation 2004
# All Rights Reserved.
# Copyright (c) 2014 Intel Corporation
#
# 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
# IBM AND/OR ITS SUPPLIERS 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 gl_XML
import license
class PrintGlTable(gl_XML.gl_print_base):
def __init__(self):
gl_XML.gl_print_base.__init__(self)
self.header_tag = '_GLAPI_TABLE_H_'
self.name = "gl_table.py (from Mesa)"
self.license = license.bsd_license_template % ( \
"""Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
(C) Copyright IBM Corporation 2004""", "BRIAN PAUL, IBM")
self.ifdef_emitted = False
return
def printBody(self, api):
for f in api.functionIterateByOffset():
if not f.is_abi() and not self.ifdef_emitted:
print '#if !defined HAVE_SHARED_GLAPI'
self.ifdef_emitted = True
arg_string = f.get_parameter_string()
print ' %s (GLAPIENTRYP %s)(%s); /* %d */' % (
f.return_type, f.name, arg_string, f.offset)
print '#endif /* !defined HAVE_SHARED_GLAPI */'
def printRealHeader(self):
print '#ifndef GLAPIENTRYP'
print '# ifndef GLAPIENTRY'
print '# define GLAPIENTRY'
print '# endif'
print ''
print '# define GLAPIENTRYP GLAPIENTRY *'
print '#endif'
print ''
print ''
print 'struct _glapi_table'
print '{'
return
def printRealFooter(self):
print '};'
return
class PrintRemapTable(gl_XML.gl_print_base):
def __init__(self):
gl_XML.gl_print_base.__init__(self)
self.header_tag = '_DISPATCH_H_'
self.name = "gl_table.py (from Mesa)"
self.license = license.bsd_license_template % (
"(C) Copyright IBM Corporation 2005", "IBM")
return
def printRealHeader(self):
print """
/**
* \\file main/dispatch.h
* Macros for handling GL dispatch tables.
*
* For each known GL function, there are 3 macros in this file. The first
* macro is named CALL_FuncName and is used to call that GL function using
* the specified dispatch table. The other 2 macros, called GET_FuncName
* can SET_FuncName, are used to get and set the dispatch pointer for the
* named function in the specified dispatch table.
*/
"""
return
def printBody(self, api):
print '#define CALL_by_offset(disp, cast, offset, parameters) \\'
print ' (*(cast (GET_by_offset(disp, offset)))) parameters'
print '#define GET_by_offset(disp, offset) \\'
print ' (offset >= 0) ? (((_glapi_proc *)(disp))[offset]) : NULL'
print '#define SET_by_offset(disp, offset, fn) \\'
print ' do { \\'
print ' if ( (offset) < 0 ) { \\'
print ' /* fprintf( stderr, "[%s:%u] SET_by_offset(%p, %d, %s)!\\n", */ \\'
print ' /* __func__, __LINE__, disp, offset, # fn); */ \\'
print ' /* abort(); */ \\'
print ' } \\'
print ' else { \\'
print ' ( (_glapi_proc *) (disp) )[offset] = (_glapi_proc) fn; \\'
print ' } \\'
print ' } while(0)'
print ''
functions = []
abi_functions = []
count = 0
for f in api.functionIterateByOffset():
if not f.is_abi():
functions.append([f, count])
count += 1
else:
abi_functions.append([f, -1])
print '/* total number of offsets below */'
print '#define _gloffset_COUNT %d' % (len(abi_functions + functions))
print ''
for f, index in abi_functions:
print '#define _gloffset_%s %d' % (f.name, f.offset)
remap_table = "driDispatchRemapTable"
print '#define %s_size %u' % (remap_table, count)
print 'extern int %s[ %s_size ];' % (remap_table, remap_table)
print ''
for f, index in functions:
print '#define %s_remap_index %u' % (f.name, index)
print ''
for f, index in functions:
print '#define _gloffset_%s %s[%s_remap_index]' % (f.name, remap_table, f.name)
print ''
for f, index in abi_functions + functions:
arg_string = gl_XML.create_parameter_string(f.parameters, 0)
print 'typedef %s (GLAPIENTRYP _glptr_%s)(%s);' % (f.return_type, f.name, arg_string)
print '#define CALL_%s(disp, parameters) \\' % (f.name)
print ' (* GET_%s(disp)) parameters' % (f.name)
print 'static inline _glptr_%s GET_%s(struct _glapi_table *disp) {' % (f.name, f.name)
print ' return (_glptr_%s) (GET_by_offset(disp, _gloffset_%s));' % (f.name, f.name)
print '}'
print
print 'static inline void SET_%s(struct _glapi_table *disp, %s (GLAPIENTRYP fn)(%s)) {' % (f.name, f.return_type, arg_string)
print ' SET_by_offset(disp, _gloffset_%s, fn);' % (f.name)
print '}'
print
return
def _parser():
"""Parse arguments and return a namespace."""
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('-m', '--mode',
choices=['table', 'remap_table'],
default='table',
metavar="mode",
help="Generate either a table or a remap_table")
return parser.parse_args()
def main():
"""Main function."""
args = _parser()
api = gl_XML.parse_GL_API(args.file_name)
if args.mode == "table":
printer = PrintGlTable()
elif args.mode == "remap_table":
printer = PrintRemapTable()
printer.Print(api)
if __name__ == '__main__':
main()
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