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gfx/gl/GLParseRegistryXML.py@6474c204b198 (annotated)

gfx/gl/GLParseRegistryXML.py

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rwxr-xr-x

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

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