workbench/libs/mesa/src/mapi/glapi/gen/gl_offsets.py

   1 #!/usr/bin/env python
   2
   3 # (C) Copyright IBM Corporation 2004, 2005
   4 # All Rights Reserved.
   5 #
   6 # Permission is hereby granted, free of charge, to any person obtaining a
   7 # copy of this software and associated documentation files (the "Software"),
   8 # to deal in the Software without restriction, including without limitation
   9 # on the rights to use, copy, modify, merge, publish, distribute, sub
  10 # license, and/or sell copies of the Software, and to permit persons to whom
  11 # the Software is furnished to do so, subject to the following conditions:
  12 #
  13 # The above copyright notice and this permission notice (including the next
  14 # paragraph) shall be included in all copies or substantial portions of the
  15 # Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 # FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  20 # IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  23 # IN THE SOFTWARE.
  24 #
  25 # Authors:
  26 #    Ian Romanick <idr@us.ibm.com>
  27
  28 import gl_XML
  29 import license
  30 import sys, getopt
  31
  32 class PrintGlOffsets(gl_XML.gl_print_base):
  33         def __init__(self, es=False):
  34                 gl_XML.gl_print_base.__init__(self)
  35
  36                 self.es = es
  37                 self.name = "gl_offsets.py (from Mesa)"
  38                 self.header_tag = '_GLAPI_OFFSETS_H_'
  39                 self.license = license.bsd_license_template % ( \
  40 """Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
  41 (C) Copyright IBM Corporation 2004""", "BRIAN PAUL, IBM")
  42                 return
  43
  44         def printBody(self, api):
  45                 print '/* this file should not be included directly in mesa */'
  46                 print ''
  47
  48                 functions = []
  49                 abi_functions = []
  50                 alias_functions = []
  51                 count = 0
  52                 for f in api.functionIterateByOffset():
  53                         if not f.is_abi():
  54                                 functions.append( [f, count] )
  55                                 count += 1
  56                         else:
  57                                 abi_functions.append( f )
  58
  59                         if self.es:
  60                                 # remember functions with aliases
  61                                 if len(f.entry_points) > 1:
  62                                         alias_functions.append(f)
  63
  64                 for f in abi_functions:
  65                         print '#define _gloffset_%s %d' % (f.name, f.offset)
  66                         last_static = f.offset
  67
  68                 print ''
  69                 print '#if !defined(_GLAPI_USE_REMAP_TABLE)'
  70                 print ''
  71
  72                 for [f, index] in functions:
  73                         print '#define _gloffset_%s %d' % (f.name, f.offset)
  74
  75                 print '#define _gloffset_FIRST_DYNAMIC %d' % (api.next_offset)
  76
  77                 print ''
  78                 print '#else'
  79                 print ''
  80
  81                 for [f, index] in functions:
  82                         print '#define _gloffset_%s driDispatchRemapTable[%s_remap_index]' % (f.name, f.name)
  83
  84                 print ''
  85                 print '#endif /* !defined(_GLAPI_USE_REMAP_TABLE) */'
  86
  87                 if alias_functions:
  88                         print ''
  89                         print '/* define aliases for compatibility */'
  90                         for f in alias_functions:
  91                                 for name in f.entry_points:
  92                                         if name != f.name:
  93                                                 print '#define _gloffset_%s _gloffset_%s' % (name, f.name)
  94                 return
  95
  96
  97 def show_usage():
  98         print "Usage: %s [-f input_file_name] [-c]" % sys.argv[0]
  99         print "    -c        Enable compatibility with OpenGL ES."
 100         sys.exit(1)
 101
 102 if __name__ == '__main__':
 103         file_name = "gl_API.xml"
 104
 105         try:
 106                 (args, trail) = getopt.getopt(sys.argv[1:], "f:c")
 107         except Exception,e:
 108                 show_usage()
 109
 110         es = False
 111         for (arg,val) in args:
 112                 if arg == "-f":
 113                         file_name = val
 114                 elif arg == "-c":
 115                         es = True
 116
 117         api = gl_XML.parse_GL_API( file_name )
 118
 119         printer = PrintGlOffsets(es)
 120         printer.Print( api )