src/mapi/glapi/gen/gl_table.py

   1 #!/usr/bin/python2
   2
   3 # (C) Copyright IBM Corporation 2004
   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 PrintGlTable(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.header_tag = '_GLAPI_TABLE_H_'
  38                 self.name = "gl_table.py (from Mesa)"
  39                 self.license = license.bsd_license_template % ( \
  40 """Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
  41 (C) Copyright IBM Corporation 2004""", "BRIAN PAUL, IBM")
  42                 return
  43
  44
  45         def printBody(self, api):
  46                 for f in api.functionIterateByOffset():
  47                         arg_string = f.get_parameter_string()
  48                         print '   %s (GLAPIENTRYP %s)(%s); /* %d */' % (f.return_type, f.name, arg_string, f.offset)
  49
  50
  51         def printRealHeader(self):
  52                 print '#ifndef GLAPIENTRYP'
  53                 print '# ifndef GLAPIENTRY'
  54                 print '#  define GLAPIENTRY'
  55                 print '# endif'
  56                 print ''
  57                 print '# define GLAPIENTRYP GLAPIENTRY *'
  58                 print '#endif'
  59                 print ''
  60                 print ''
  61                 print 'struct _glapi_table'
  62                 print '{'
  63                 return
  64
  65
  66         def printRealFooter(self):
  67                 print '};'
  68                 return
  69
  70
  71 class PrintRemapTable(gl_XML.gl_print_base):
  72         def __init__(self, es=False):
  73                 gl_XML.gl_print_base.__init__(self)
  74
  75                 self.es = es
  76                 self.header_tag = '_DISPATCH_H_'
  77                 self.name = "gl_table.py (from Mesa)"
  78                 self.license = license.bsd_license_template % ("(C) Copyright IBM Corporation 2005", "IBM")
  79                 return
  80
  81
  82         def printRealHeader(self):
  83                 print """
  84 /**
  85  * \\file main/dispatch.h
  86  * Macros for handling GL dispatch tables.
  87  *
  88  * For each known GL function, there are 3 macros in this file.  The first
  89  * macro is named CALL_FuncName and is used to call that GL function using
  90  * the specified dispatch table.  The other 2 macros, called GET_FuncName
  91  * can SET_FuncName, are used to get and set the dispatch pointer for the
  92  * named function in the specified dispatch table.
  93  */
  94
  95 #include "main/mfeatures.h"
  96 """
  97                 return
  98
  99         def printBody(self, api):
 100                 print '#define CALL_by_offset(disp, cast, offset, parameters) \\'
 101                 print '    (*(cast (GET_by_offset(disp, offset)))) parameters'
 102                 print '#define GET_by_offset(disp, offset) \\'
 103                 print '    (offset >= 0) ? (((_glapi_proc *)(disp))[offset]) : NULL'
 104                 print '#define SET_by_offset(disp, offset, fn) \\'
 105                 print '    do { \\'
 106                 print '        if ( (offset) < 0 ) { \\'
 107                 print '            /* fprintf( stderr, "[%s:%u] SET_by_offset(%p, %d, %s)!\\n", */ \\'
 108                 print '            /*         __func__, __LINE__, disp, offset, # fn); */ \\'
 109                 print '            /* abort(); */ \\'
 110                 print '        } \\'
 111                 print '        else { \\'
 112                 print '            ( (_glapi_proc *) (disp) )[offset] = (_glapi_proc) fn; \\'
 113                 print '        } \\'
 114                 print '    } while(0)'
 115                 print ''
 116
 117                 functions = []
 118                 abi_functions = []
 119                 alias_functions = []
 120                 count = 0
 121                 for f in api.functionIterateByOffset():
 122                         if not f.is_abi():
 123                                 functions.append( [f, count] )
 124                                 count += 1
 125                         else:
 126                                 abi_functions.append( [f, -1] )
 127
 128                         if self.es:
 129                                 # remember functions with aliases
 130                                 if len(f.entry_points) > 1:
 131                                         alias_functions.append(f)
 132
 133                 print '/* total number of offsets below */'
 134                 print '#define _gloffset_COUNT %d' % (len(abi_functions + functions))
 135                 print ''
 136
 137                 for f, index in abi_functions:
 138                         print '#define _gloffset_%s %d' % (f.name, f.offset)
 139
 140                 print ''
 141                 print '#if !FEATURE_remap_table'
 142                 print ''
 143
 144                 for f, index in functions:
 145                         print '#define _gloffset_%s %d' % (f.name, f.offset)
 146
 147                 print ''
 148                 print '#else /* !FEATURE_remap_table */'
 149                 print ''
 150
 151                 if self.es:
 152                         remap_table = "esLocalRemapTable"
 153
 154                         print '#define %s_size %u' % (remap_table, count)
 155                         print 'static int %s[ %s_size ];' % (remap_table, remap_table)
 156                         print ''
 157                 else:
 158                         remap_table = "driDispatchRemapTable"
 159
 160                         print '#define %s_size %u' % (remap_table, count)
 161                         print 'extern int %s[ %s_size ];' % (remap_table, remap_table)
 162                         print ''
 163
 164                 for f, index in functions:
 165                         print '#define %s_remap_index %u' % (f.name, index)
 166
 167                 print ''
 168
 169                 for f, index in functions:
 170                         print '#define _gloffset_%s %s[%s_remap_index]' % (f.name, remap_table, f.name)
 171
 172                 print ''
 173                 print '#endif /* !FEATURE_remap_table */'
 174                 print ''
 175
 176                 for f, index in abi_functions + functions:
 177                         arg_string = gl_XML.create_parameter_string( f.parameters, 0 )
 178
 179                         print 'typedef %s (GLAPIENTRYP _glptr_%s)(%s);' % (f.return_type, f.name, arg_string)
 180                         print '#define CALL_%s(disp, parameters) \\' % (f.name)
 181                         print '    (* GET_%s(disp)) parameters' % (f.name)
 182                         print 'static INLINE _glptr_%s GET_%s(struct _glapi_table *disp) {' % (f.name, f.name)
 183                         print '   return (_glptr_%s) (GET_by_offset(disp, _gloffset_%s));' % (f.name, f.name)
 184                         print '}'
 185                         print
 186                         print 'static INLINE void SET_%s(struct _glapi_table *disp, %s (GLAPIENTRYP fn)(%s)) {' % (f.name, f.return_type, arg_string)
 187                         print '   SET_by_offset(disp, _gloffset_%s, fn);' % (f.name)
 188                         print '}'
 189                         print
 190
 191                 if alias_functions:
 192                         print ''
 193                         print '/* define aliases for compatibility */'
 194                         for f in alias_functions:
 195                                 for name in f.entry_points:
 196                                         if name != f.name:
 197                                                 print '#define CALL_%s(disp, parameters) CALL_%s(disp, parameters)' % (name, f.name)
 198                                                 print '#define GET_%s(disp) GET_%s(disp)' % (name, f.name)
 199                                                 print '#define SET_%s(disp, fn) SET_%s(disp, fn)' % (name, f.name)
 200                         print ''
 201
 202                         print '#if FEATURE_remap_table'
 203                         for f in alias_functions:
 204                                 for name in f.entry_points:
 205                                         if name != f.name:
 206                                                 print '#define %s_remap_index %s_remap_index' % (name, f.name)
 207                         print '#endif /* FEATURE_remap_table */'
 208                         print ''
 209
 210                 return
 211
 212
 213 def show_usage():
 214         print "Usage: %s [-f input_file_name] [-m mode] [-c]" % sys.argv[0]
 215         print "    -m mode   Mode can be 'table' or 'remap_table'."
 216         print "    -c        Enable compatibility with OpenGL ES."
 217         sys.exit(1)
 218
 219 if __name__ == '__main__':
 220         file_name = "gl_API.xml"
 221
 222         try:
 223                 (args, trail) = getopt.getopt(sys.argv[1:], "f:m:c")
 224         except Exception,e:
 225                 show_usage()
 226
 227         mode = "table"
 228         es = False
 229         for (arg,val) in args:
 230                 if arg == "-f":
 231                         file_name = val
 232                 elif arg == "-m":
 233                         mode = val
 234                 elif arg == "-c":
 235                         es = True
 236
 237         if mode == "table":
 238                 printer = PrintGlTable(es)
 239         elif mode == "remap_table":
 240                 printer = PrintRemapTable(es)
 241         else:
 242                 show_usage()
 243
 244         api = gl_XML.parse_GL_API( file_name )
 245
 246         printer.Print( api )