1# -*- coding: utf-8 -*-
2
3#-------------------------------------------------------------------------
4# drawElements Quality Program utilities
5# --------------------------------------
6#
7# Copyright 2015 The Android Open Source Project
8#
9# Licensed under the Apache License, Version 2.0 (the "License");
10# you may not use this file except in compliance with the License.
11# You may obtain a copy of the License at
12#
13#      http://www.apache.org/licenses/LICENSE-2.0
14#
15# Unless required by applicable law or agreed to in writing, software
16# distributed under the License is distributed on an "AS IS" BASIS,
17# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18# See the License for the specific language governing permissions and
19# limitations under the License.
20#
21#-------------------------------------------------------------------------
22
23import os
24from src_util import *
25from itertools import chain
26
27try:
28	from itertools import imap
29except ImportError:
30	imap=map
31
32def getMangledName (funcName):
33	assert funcName[:2] == "gl"
34	return "glw" + funcName[2:]
35
36def commandAliasDefinition (command):
37	return "#define\t%s\t%s" % (command.name, getMangledName(command.name))
38
39def commandWrapperDeclaration (command):
40	return "%s\t%s\t(%s);" % (
41		command.type,
42		getMangledName(command.name),
43		", ".join([param.declaration for param in command.params]))
44
45def genWrapperHeader (iface):
46	defines = imap(commandAliasDefinition, iface.commands)
47	prototypes = imap(commandWrapperDeclaration, iface.commands)
48	src = indentLines(chain(defines, prototypes))
49	writeInlFile(os.path.join(OPENGL_INC_DIR, "glwApi.inl"), src)
50
51def getDefaultReturn (command):
52	if command.name == "glGetError":
53		return "GL_INVALID_OPERATION"
54	else:
55		assert command.type != 'void'
56		return "(%s)0" % command.type
57
58def commandWrapperDefinition (command):
59	template = """
60{returnType} {mangledName} ({paramDecls})
61{{
62	const glw::Functions* gl = glw::getCurrentThreadFunctions();
63	if (!gl)
64		return{defaultReturn};
65	{maybeReturn}gl->{memberName}({arguments});
66}}"""
67	return template.format(
68		returnType		= command.type,
69		mangledName		= getMangledName(command.name),
70		paramDecls		= commandParams(command),
71		defaultReturn	= " " + getDefaultReturn(command) if command.type != 'void' else "",
72		maybeReturn		= "return " if command.type != 'void' else "",
73		memberName		= getFunctionMemberName(command.name),
74		arguments		= commandArgs(command))
75
76def genWrapperImplementation (iface):
77	genCommandList(iface, commandWrapperDefinition, OPENGL_INC_DIR, "glwImpl.inl")
78
79def genWrapper (iface):
80	genWrapperHeader(iface)
81	genWrapperImplementation(iface)
82
83if __name__ == "__main__":
84	genWrapper(getHybridInterface())
85