1 2# (C) Copyright IBM Corporation 2004 3# All Rights Reserved. 4# Copyright (c) 2014 Intel Corporation 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 28import argparse 29 30import gl_XML 31import license 32 33 34class PrintGlTable(gl_XML.gl_print_base): 35 def __init__(self): 36 gl_XML.gl_print_base.__init__(self) 37 38 self.header_tag = '_GLAPI_TABLE_H_' 39 self.name = "gl_table.py (from Mesa)" 40 self.license = license.bsd_license_template % ( \ 41"""Copyright (C) 1999-2003 Brian Paul All Rights Reserved. 42(C) Copyright IBM Corporation 2004""", "BRIAN PAUL, IBM") 43 return 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 */' % ( 49 f.return_type, f.name, arg_string, f.offset) 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 '#ifdef __cplusplus' 62 print 'extern "C" {' 63 print '#endif' 64 print '' 65 print 'struct _glapi_table' 66 print '{' 67 return 68 69 def printRealFooter(self): 70 print '};' 71 print '' 72 print '#ifdef __cplusplus' 73 print '}' 74 print '#endif' 75 return 76 77 78class PrintRemapTable(gl_XML.gl_print_base): 79 def __init__(self): 80 gl_XML.gl_print_base.__init__(self) 81 82 self.header_tag = '_DISPATCH_H_' 83 self.name = "gl_table.py (from Mesa)" 84 self.license = license.bsd_license_template % ( 85 "(C) Copyright IBM Corporation 2005", "IBM") 86 return 87 88 89 def printRealHeader(self): 90 print """ 91/** 92 * \\file main/dispatch.h 93 * Macros for handling GL dispatch tables. 94 * 95 * For each known GL function, there are 3 macros in this file. The first 96 * macro is named CALL_FuncName and is used to call that GL function using 97 * the specified dispatch table. The other 2 macros, called GET_FuncName 98 * can SET_FuncName, are used to get and set the dispatch pointer for the 99 * named function in the specified dispatch table. 100 */ 101""" 102 return 103 104 105 def printBody(self, api): 106 print '#define CALL_by_offset(disp, cast, offset, parameters) \\' 107 print ' (*(cast (GET_by_offset(disp, offset)))) parameters' 108 print '#define GET_by_offset(disp, offset) \\' 109 print ' (offset >= 0) ? (((_glapi_proc *)(disp))[offset]) : NULL' 110 print '#define SET_by_offset(disp, offset, fn) \\' 111 print ' do { \\' 112 print ' if ( (offset) < 0 ) { \\' 113 print ' /* fprintf( stderr, "[%s:%u] SET_by_offset(%p, %d, %s)!\\n", */ \\' 114 print ' /* __func__, __LINE__, disp, offset, # fn); */ \\' 115 print ' /* abort(); */ \\' 116 print ' } \\' 117 print ' else { \\' 118 print ' ( (_glapi_proc *) (disp) )[offset] = (_glapi_proc) fn; \\' 119 print ' } \\' 120 print ' } while(0)' 121 print '' 122 123 functions = [] 124 abi_functions = [] 125 count = 0 126 for f in api.functionIterateByOffset(): 127 if not f.is_abi(): 128 functions.append([f, count]) 129 count += 1 130 else: 131 abi_functions.append([f, -1]) 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 remap_table = "driDispatchRemapTable" 141 142 print '#define %s_size %u' % (remap_table, count) 143 print 'extern int %s[ %s_size ];' % (remap_table, remap_table) 144 print '' 145 146 for f, index in functions: 147 print '#define %s_remap_index %u' % (f.name, index) 148 149 print '' 150 151 for f, index in functions: 152 print '#define _gloffset_%s %s[%s_remap_index]' % (f.name, remap_table, f.name) 153 154 print '' 155 156 for f, index in abi_functions + functions: 157 arg_string = gl_XML.create_parameter_string(f.parameters, 0) 158 159 print 'typedef %s (GLAPIENTRYP _glptr_%s)(%s);' % (f.return_type, f.name, arg_string) 160 print '#define CALL_%s(disp, parameters) \\' % (f.name) 161 print ' (* GET_%s(disp)) parameters' % (f.name) 162 print 'static inline _glptr_%s GET_%s(struct _glapi_table *disp) {' % (f.name, f.name) 163 print ' return (_glptr_%s) (GET_by_offset(disp, _gloffset_%s));' % (f.name, f.name) 164 print '}' 165 print 166 print 'static inline void SET_%s(struct _glapi_table *disp, %s (GLAPIENTRYP fn)(%s)) {' % (f.name, f.return_type, arg_string) 167 print ' SET_by_offset(disp, _gloffset_%s, fn);' % (f.name) 168 print '}' 169 print 170 171 return 172 173 174def _parser(): 175 """Parse arguments and return a namespace.""" 176 parser = argparse.ArgumentParser() 177 parser.add_argument('-f', '--filename', 178 default='gl_API.xml', 179 metavar="input_file_name", 180 dest='file_name', 181 help="Path to an XML description of OpenGL API.") 182 parser.add_argument('-m', '--mode', 183 choices=['table', 'remap_table'], 184 default='table', 185 metavar="mode", 186 help="Generate either a table or a remap_table") 187 return parser.parse_args() 188 189 190def main(): 191 """Main function.""" 192 args = _parser() 193 194 api = gl_XML.parse_GL_API(args.file_name) 195 196 if args.mode == "table": 197 printer = PrintGlTable() 198 elif args.mode == "remap_table": 199 printer = PrintRemapTable() 200 201 printer.Print(api) 202 203 204if __name__ == '__main__': 205 main() 206