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 )