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comparison: gfx/gl/GLParseRegistryXML.py
gfx/gl/GLParseRegistryXML.py
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:7d0e4329b5e6 |
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| 1 #!/usr/bin/env python | |
| 2 # coding=utf8 | |
| 3 | |
| 4 | |
| 5 ################################################################################ | |
| 6 # TUTORIAL | |
| 7 # This script will generate GLConsts.h | |
| 8 # | |
| 9 # Step 1: | |
| 10 # Download the last gl.xml, egl.xml, glx.xml and wgl.xml from | |
| 11 # http://www.opengl.org/registry/#specfiles into a directory of your choice | |
| 12 # | |
| 13 # Step 2: | |
| 14 # Execute this script ./GLParseRegistryXML.py [your dir containing XML files] | |
| 15 # | |
| 16 # Step 3: | |
| 17 # Do not add the downloaded XML in the patch | |
| 18 # | |
| 19 # Step 4: | |
| 20 # Enjoy =) | |
| 21 # | |
| 22 ################################################################################ | |
| 23 | |
| 24 # includes | |
| 25 import os | |
| 26 import sys | |
| 27 import xml.etree.ElementTree | |
| 28 | |
| 29 | |
| 30 ################################################################################ | |
| 31 # export management | |
| 32 | |
| 33 class GLConstHeader: | |
| 34 def __init__(self, f): | |
| 35 self.f = f | |
| 36 | |
| 37 | |
| 38 def write(self, arg): | |
| 39 if isinstance(arg, list): | |
| 40 self.f.write('\n'.join(arg) + '\n') | |
| 41 elif isinstance(arg, (int, long)): | |
| 42 self.f.write('\n' * arg) | |
| 43 else: | |
| 44 self.f.write(str(arg) + '\n') | |
| 45 | |
| 46 | |
| 47 def formatFileBegin(self): | |
| 48 self.write([ | |
| 49 '/* This Source Code Form is subject to the terms of the Mozilla Public', | |
| 50 ' * License, v. 2.0. If a copy of the MPL was not distributed with this', | |
| 51 ' * file, You can obtain one at http://mozilla.org/MPL/2.0/. */', | |
| 52 '', | |
| 53 '#ifndef GLCONSTS_H_', | |
| 54 '#define GLCONSTS_H_', | |
| 55 '', | |
| 56 '/**', | |
| 57 ' * GENERATED FILE, DO NOT MODIFY DIRECTLY.', | |
| 58 ' * This is a file generated directly from the official OpenGL registry', | |
| 59 ' * xml available http://www.opengl.org/registry/#specfiles.', | |
| 60 ' *', | |
| 61 ' * To generate this file, see tutorial in \'GLParseRegistryXML.py\'.', | |
| 62 ' */', | |
| 63 '' | |
| 64 ]) | |
| 65 | |
| 66 | |
| 67 def formatLibBegin(self, lib): | |
| 68 # lib would be 'GL', 'EGL', 'GLX' or 'WGL' | |
| 69 self.write('// ' + lib) | |
| 70 | |
| 71 | |
| 72 def formatLibConstant(self, lib, name, value): | |
| 73 # lib would be 'GL', 'EGL', 'GLX' or 'WGL' | |
| 74 # name is the name of the const (example: MAX_TEXTURE_SIZE) | |
| 75 # value is the value of the const (example: 0xABCD) | |
| 76 | |
| 77 define = '#define LOCAL_' + lib + '_' + name | |
| 78 whitespace = 60 - len(define) | |
| 79 | |
| 80 if whitespace < 0: | |
| 81 whitespace = whitespace % 8 | |
| 82 | |
| 83 self.write(define + ' ' * whitespace + ' ' + value) | |
| 84 | |
| 85 | |
| 86 def formatLibEnd(self, lib): | |
| 87 # lib would be 'GL', 'EGL', 'GLX' or 'WGL' | |
| 88 self.write(2) | |
| 89 | |
| 90 | |
| 91 def formatFileEnd(self): | |
| 92 self.write([ | |
| 93 '', | |
| 94 '#endif // GLCONSTS_H_' | |
| 95 ]) | |
| 96 | |
| 97 | |
| 98 ################################################################################ | |
| 99 # underground code | |
| 100 | |
| 101 def getScriptDir(): | |
| 102 return os.path.dirname(__file__) + '/' | |
| 103 | |
| 104 | |
| 105 def getXMLDir(): | |
| 106 if len(sys.argv) == 1: | |
| 107 return './' | |
| 108 | |
| 109 dirPath = sys.argv[1] | |
| 110 if dirPath[-1] != '/': | |
| 111 dirPath += '/' | |
| 112 | |
| 113 return dirPath | |
| 114 | |
| 115 | |
| 116 class GLConst: | |
| 117 def __init__(self, lib, name, value, type): | |
| 118 self.lib = lib | |
| 119 self.name = name | |
| 120 self.value = value | |
| 121 self.type = type | |
| 122 | |
| 123 | |
| 124 class GLDatabase: | |
| 125 | |
| 126 LIBS = ['GL', 'EGL', 'GLX', 'WGL'] | |
| 127 | |
| 128 def __init__(self): | |
| 129 self.consts = {} | |
| 130 self.libs = set(GLDatabase.LIBS) | |
| 131 self.vendors = set(['EXT', 'ATI']) | |
| 132 # there is no vendor="EXT" and vendor="ATI" in gl.xml, | |
| 133 # so we manualy declare them | |
| 134 | |
| 135 | |
| 136 def loadXML(self, path): | |
| 137 xmlPath = getXMLDir() + path | |
| 138 | |
| 139 if not os.path.isfile(xmlPath): | |
| 140 print 'missing file "' + xmlPath + '"' | |
| 141 return False | |
| 142 | |
| 143 tree = xml.etree.ElementTree.parse(xmlPath) | |
| 144 root = tree.getroot() | |
| 145 | |
| 146 for enums in root.iter('enums'): | |
| 147 vendor = enums.get('vendor') | |
| 148 if not vendor: | |
| 149 # there some standart enums that do have the vendor attribute, | |
| 150 # so we fake them as ARB's enums | |
| 151 vendor = 'ARB' | |
| 152 | |
| 153 if vendor not in self.vendors: | |
| 154 # we map this new vendor in the vendors set. | |
| 155 self.vendors.add(vendor) | |
| 156 | |
| 157 namespaceType = enums.get('type') | |
| 158 | |
| 159 for enum in enums: | |
| 160 if enum.tag != 'enum': | |
| 161 # this is not an enum => we skip it | |
| 162 continue | |
| 163 | |
| 164 lib = enum.get('name').split('_')[0] | |
| 165 | |
| 166 if lib not in self.libs: | |
| 167 # unknown library => we skip it | |
| 168 continue | |
| 169 | |
| 170 name = enum.get('name')[len(lib) + 1:] | |
| 171 value = enum.get('value') | |
| 172 type = enum.get('type') | |
| 173 | |
| 174 if not type: | |
| 175 # if no type specified, we get the namespace's default type | |
| 176 type = namespaceType | |
| 177 | |
| 178 self.consts[lib + '_' + name] = GLConst(lib, name, value, type) | |
| 179 | |
| 180 return True | |
| 181 | |
| 182 | |
| 183 def exportConsts(self, path): | |
| 184 with open(getScriptDir() + path,'w') as f: | |
| 185 | |
| 186 headerFile = GLConstHeader(f) | |
| 187 headerFile.formatFileBegin() | |
| 188 | |
| 189 constNames = self.consts.keys() | |
| 190 constNames.sort() | |
| 191 | |
| 192 for lib in GLDatabase.LIBS: | |
| 193 headerFile.formatLibBegin(lib) | |
| 194 | |
| 195 for constName in constNames: | |
| 196 const = self.consts[constName] | |
| 197 | |
| 198 if const.lib != lib: | |
| 199 continue | |
| 200 | |
| 201 headerFile.formatLibConstant(lib, const.name, const.value) | |
| 202 | |
| 203 headerFile.formatLibEnd(lib) | |
| 204 | |
| 205 headerFile.formatFileEnd() | |
| 206 | |
| 207 | |
| 208 glDatabase = GLDatabase() | |
| 209 | |
| 210 success = glDatabase.loadXML('gl.xml') | |
| 211 success = success and glDatabase.loadXML('egl.xml') | |
| 212 success = success and glDatabase.loadXML('glx.xml') | |
| 213 success = success and glDatabase.loadXML('wgl.xml') | |
| 214 | |
| 215 if success: | |
| 216 glDatabase.exportConsts('GLConsts.h') |
