diff options
Diffstat (limited to 'mesalib/src/mesa/glapi/gen/gl_enums.py')
| -rw-r--r-- | mesalib/src/mesa/glapi/gen/gl_enums.py | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/mesalib/src/mesa/glapi/gen/gl_enums.py b/mesalib/src/mesa/glapi/gen/gl_enums.py new file mode 100644 index 000000000..3a9ea3c86 --- /dev/null +++ b/mesalib/src/mesa/glapi/gen/gl_enums.py @@ -0,0 +1,243 @@ +#!/usr/bin/python2 +# -*- Mode: Python; py-indent-offset: 8 -*- + +# (C) Copyright Zack Rusin 2005 +# All Rights Reserved. +# +# 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: +# Zack Rusin <zack@kde.org> + +import license +import gl_XML +import sys, getopt + +class PrintGlEnums(gl_XML.gl_print_base): + + def __init__(self): + gl_XML.gl_print_base.__init__(self) + + self.name = "gl_enums.py (from Mesa)" + self.license = license.bsd_license_template % ( \ +"""Copyright (C) 1999-2005 Brian Paul All Rights Reserved.""", "BRIAN PAUL") + self.enum_table = {} + + + def printRealHeader(self): + print '#include "main/glheader.h"' + print '#include "main/mfeatures.h"' + print '#include "main/enums.h"' + print '#include "main/imports.h"' + print '' + print 'typedef struct {' + print ' size_t offset;' + print ' int n;' + print '} enum_elt;' + print '' + return + + def print_code(self): + print """ +typedef int (*cfunc)(const void *, const void *); + +/** + * Compare a key name to an element in the \c all_enums array. + * + * \c bsearch always passes the key as the first parameter and the pointer + * to the array element as the second parameter. We can elimiate some + * extra work by taking advantage of that fact. + * + * \param a Pointer to the desired enum name. + * \param b Pointer to an element of the \c all_enums array. + */ +static int compar_name( const char *a, const enum_elt *b ) +{ + return strcmp( a, & enum_string_table[ b->offset ] ); +} + +/** + * Compare a key enum value to an element in the \c all_enums array. + * + * \c bsearch always passes the key as the first parameter and the pointer + * to the array element as the second parameter. We can elimiate some + * extra work by taking advantage of that fact. + * + * \param a Pointer to the desired enum name. + * \param b Pointer to an index into the \c all_enums array. + */ +static int compar_nr( const int *a, const unsigned *b ) +{ + return a[0] - all_enums[*b].n; +} + + +static char token_tmp[20]; + +const char *_mesa_lookup_enum_by_nr( int nr ) +{ + unsigned * i; + + i = (unsigned *) _mesa_bsearch(& nr, reduced_enums, + Elements(reduced_enums), + sizeof(reduced_enums[0]), + (cfunc) compar_nr); + + if ( i != NULL ) { + return & enum_string_table[ all_enums[ *i ].offset ]; + } + else { + /* this is not re-entrant safe, no big deal here */ + sprintf(token_tmp, "0x%x", nr); + return token_tmp; + } +} + +/* Get the name of an enum given that it is a primitive type. Avoids + * GL_FALSE/GL_POINTS ambiguity and others. + */ +const char *_mesa_lookup_prim_by_nr( int nr ) +{ + switch (nr) { + case GL_POINTS: return "GL_POINTS"; + case GL_LINES: return "GL_LINES"; + case GL_LINE_STRIP: return "GL_LINE_STRIP"; + case GL_LINE_LOOP: return "GL_LINE_LOOP"; + case GL_TRIANGLES: return "GL_TRIANGLES"; + case GL_TRIANGLE_STRIP: return "GL_TRIANGLE_STRIP"; + case GL_TRIANGLE_FAN: return "GL_TRIANGLE_FAN"; + case GL_QUADS: return "GL_QUADS"; + case GL_QUAD_STRIP: return "GL_QUAD_STRIP"; + case GL_POLYGON: return "GL_POLYGON"; + case GL_POLYGON+1: return "OUTSIDE_BEGIN_END"; + default: return "<invalid>"; + } +} + + + +int _mesa_lookup_enum_by_name( const char *symbol ) +{ + enum_elt * f = NULL; + + if ( symbol != NULL ) { + f = (enum_elt *) _mesa_bsearch(symbol, all_enums, + Elements(all_enums), + sizeof( enum_elt ), + (cfunc) compar_name); + } + + return (f != NULL) ? f->n : -1; +} + +""" + return + + + def printBody(self, api): + self.process_enums( api ) + + keys = self.enum_table.keys() + keys.sort() + + name_table = [] + enum_table = {} + + for enum in keys: + low_pri = 9 + for [name, pri] in self.enum_table[ enum ]: + name_table.append( [name, enum] ) + + if pri < low_pri: + low_pri = pri + enum_table[enum] = name + + + name_table.sort() + + string_offsets = {} + i = 0; + print 'LONGSTRING static const char enum_string_table[] = ' + for [name, enum] in name_table: + print ' "%s\\0"' % (name) + string_offsets[ name ] = i + i += len(name) + 1 + + print ' ;' + print '' + + + print 'static const enum_elt all_enums[%u] =' % (len(name_table)) + print '{' + for [name, enum] in name_table: + print ' { %5u, 0x%08X }, /* %s */' % (string_offsets[name], enum, name) + print '};' + print '' + + print 'static const unsigned reduced_enums[%u] =' % (len(keys)) + print '{' + for enum in keys: + name = enum_table[ enum ] + if [name, enum] not in name_table: + print ' /* Error! %s, 0x%04x */ 0,' % (name, enum) + else: + i = name_table.index( [name, enum] ) + + print ' %4u, /* %s */' % (i, name) + print '};' + + + self.print_code() + return + + + def process_enums(self, api): + self.enum_table = {} + + for obj in api.enumIterateByName(): + if obj.value not in self.enum_table: + self.enum_table[ obj.value ] = [] + + + name = "GL_" + obj.name + priority = obj.priority() + self.enum_table[ obj.value ].append( [name, priority] ) + + +def show_usage(): + print "Usage: %s [-f input_file_name]" % sys.argv[0] + sys.exit(1) + +if __name__ == '__main__': + file_name = "gl_API.xml" + + try: + (args, trail) = getopt.getopt(sys.argv[1:], "f:") + except Exception,e: + show_usage() + + for (arg,val) in args: + if arg == "-f": + file_name = val + + api = gl_XML.parse_GL_API( file_name ) + + printer = PrintGlEnums() + printer.Print( api ) |