1 #!/usr/bin/python2 2 # -*- Mode: Python; py-indent-offset: 8 -*- 3 4 # (C) Copyright Zack Rusin 2005 5 # All Rights Reserved. 6 # 7 # Permission is hereby granted, free of charge, to any person obtaining a 8 # copy of this software and associated documentation files (the "Software"), 9 # to deal in the Software without restriction, including without limitation 10 # on the rights to use, copy, modify, merge, publish, distribute, sub 11 # license, and/or sell copies of the Software, and to permit persons to whom 12 # the Software is furnished to do so, subject to the following conditions: 13 # 14 # The above copyright notice and this permission notice (including the next 15 # paragraph) shall be included in all copies or substantial portions of the 16 # Software. 17 # 18 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 # FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 # IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 23 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 24 # IN THE SOFTWARE. 25 # 26 # Authors: 27 # Zack Rusin <zack (at] kde.org> 28 29 import license 30 import gl_XML 31 import sys, getopt 32 33 class PrintGlEnums(gl_XML.gl_print_base): 34 35 def __init__(self): 36 gl_XML.gl_print_base.__init__(self) 37 38 self.name = "gl_enums.py (from Mesa)" 39 self.license = license.bsd_license_template % ( \ 40 """Copyright (C) 1999-2005 Brian Paul All Rights Reserved.""", "BRIAN PAUL") 41 self.enum_table = {} 42 43 44 def printRealHeader(self): 45 print '#include "main/glheader.h"' 46 print '#include "main/mfeatures.h"' 47 print '#include "main/enums.h"' 48 print '#include "main/imports.h"' 49 print '#include "main/mtypes.h"' 50 print '' 51 print 'typedef struct {' 52 print ' size_t offset;' 53 print ' int n;' 54 print '} enum_elt;' 55 print '' 56 return 57 58 def print_code(self): 59 print """ 60 typedef int (*cfunc)(const void *, const void *); 61 62 /** 63 * Compare a key name to an element in the \c all_enums array. 64 * 65 * \c bsearch always passes the key as the first parameter and the pointer 66 * to the array element as the second parameter. We can elimiate some 67 * extra work by taking advantage of that fact. 68 * 69 * \param a Pointer to the desired enum name. 70 * \param b Pointer to an element of the \c all_enums array. 71 */ 72 static int compar_name( const char *a, const enum_elt *b ) 73 { 74 return strcmp( a, & enum_string_table[ b->offset ] ); 75 } 76 77 /** 78 * Compare a key enum value to an element in the \c all_enums array. 79 * 80 * \c bsearch always passes the key as the first parameter and the pointer 81 * to the array element as the second parameter. We can elimiate some 82 * extra work by taking advantage of that fact. 83 * 84 * \param a Pointer to the desired enum name. 85 * \param b Pointer to an index into the \c all_enums array. 86 */ 87 static int compar_nr( const int *a, const unsigned *b ) 88 { 89 return a[0] - all_enums[*b].n; 90 } 91 92 93 static char token_tmp[20]; 94 95 const char *_mesa_lookup_enum_by_nr( int nr ) 96 { 97 unsigned * i; 98 99 i = (unsigned *) _mesa_bsearch(& nr, reduced_enums, 100 Elements(reduced_enums), 101 sizeof(reduced_enums[0]), 102 (cfunc) compar_nr); 103 104 if ( i != NULL ) { 105 return & enum_string_table[ all_enums[ *i ].offset ]; 106 } 107 else { 108 /* this is not re-entrant safe, no big deal here */ 109 _mesa_snprintf(token_tmp, sizeof(token_tmp) - 1, "0x%x", nr); 110 token_tmp[sizeof(token_tmp) - 1] = '\\0'; 111 return token_tmp; 112 } 113 } 114 115 /** 116 * Primitive names 117 */ 118 static const char *prim_names[PRIM_UNKNOWN + 1] = { 119 "GL_POINTS", 120 "GL_LINES", 121 "GL_LINE_LOOP", 122 "GL_LINE_STRIP", 123 "GL_TRIANGLES", 124 "GL_TRIANGLE_STRIP", 125 "GL_TRIANGLE_FAN", 126 "GL_QUADS", 127 "GL_QUAD_STRIP", 128 "GL_POLYGON", 129 "outside begin/end", 130 "inside unknown primitive", 131 "unknown state" 132 }; 133 134 135 /* Get the name of an enum given that it is a primitive type. Avoids 136 * GL_FALSE/GL_POINTS ambiguity and others. 137 */ 138 const char * 139 _mesa_lookup_prim_by_nr(GLuint nr) 140 { 141 if (nr < Elements(prim_names)) 142 return prim_names[nr]; 143 else 144 return "invalid mode"; 145 } 146 147 148 int _mesa_lookup_enum_by_name( const char *symbol ) 149 { 150 enum_elt * f = NULL; 151 152 if ( symbol != NULL ) { 153 f = (enum_elt *) _mesa_bsearch(symbol, all_enums, 154 Elements(all_enums), 155 sizeof( enum_elt ), 156 (cfunc) compar_name); 157 } 158 159 return (f != NULL) ? f->n : -1; 160 } 161 162 """ 163 return 164 165 166 def printBody(self, api_list): 167 self.enum_table = {} 168 for api in api_list: 169 self.process_enums( api ) 170 171 keys = self.enum_table.keys() 172 keys.sort() 173 174 name_table = [] 175 enum_table = {} 176 177 for enum in keys: 178 low_pri = 9 179 for [name, pri] in self.enum_table[ enum ]: 180 name_table.append( [name, enum] ) 181 182 if pri < low_pri: 183 low_pri = pri 184 enum_table[enum] = name 185 186 187 name_table.sort() 188 189 string_offsets = {} 190 i = 0; 191 print 'LONGSTRING static const char enum_string_table[] = ' 192 for [name, enum] in name_table: 193 print ' "%s\\0"' % (name) 194 string_offsets[ name ] = i 195 i += len(name) + 1 196 197 print ' ;' 198 print '' 199 200 201 print 'static const enum_elt all_enums[%u] =' % (len(name_table)) 202 print '{' 203 for [name, enum] in name_table: 204 print ' { %5u, 0x%08X }, /* %s */' % (string_offsets[name], enum, name) 205 print '};' 206 print '' 207 208 print 'static const unsigned reduced_enums[%u] =' % (len(keys)) 209 print '{' 210 for enum in keys: 211 name = enum_table[ enum ] 212 if [name, enum] not in name_table: 213 print ' /* Error! %s, 0x%04x */ 0,' % (name, enum) 214 else: 215 i = name_table.index( [name, enum] ) 216 217 print ' %4u, /* %s */' % (i, name) 218 print '};' 219 220 221 self.print_code() 222 return 223 224 225 def process_enums(self, api): 226 for obj in api.enumIterateByName(): 227 if obj.value not in self.enum_table: 228 self.enum_table[ obj.value ] = [] 229 230 231 enum = self.enum_table[ obj.value ] 232 name = "GL_" + obj.name 233 priority = obj.priority() 234 already_in = False; 235 for n, p in enum: 236 if n == name: 237 already_in = True 238 if not already_in: 239 enum.append( [name, priority] ) 240 241 242 def show_usage(): 243 print "Usage: %s [-f input_file_name]" % sys.argv[0] 244 sys.exit(1) 245 246 if __name__ == '__main__': 247 try: 248 (args, trail) = getopt.getopt(sys.argv[1:], "f:") 249 except Exception,e: 250 show_usage() 251 252 api_list = [] 253 for (arg,val) in args: 254 if arg == "-f": 255 api = gl_XML.parse_GL_API( val ) 256 api_list.append(api); 257 258 printer = PrintGlEnums() 259 printer.Print( api_list ) 260
