1//
2// Copyright (c) 2016 The ANGLE Project Authors. All rights reserved.
3// Use of this source code is governed by a BSD-style license that can be
4// found in the LICENSE file.
5//
6// DeferGlobalInitializers is an AST traverser that moves global initializers into a separate
7// function that is called in the beginning of main(). This enables initialization of globals with
8// uniforms or non-constant globals, as allowed by the WebGL spec. Some initializers referencing
9// non-constants may need to be unfolded into if statements in HLSL - this kind of steps should be
10// done after DeferGlobalInitializers is run. Note that it's important that the function definition
11// is at the end of the shader, as some globals may be declared after main().
12//
13// It can also initialize all uninitialized globals.
14//
15
16#ifndef COMPILER_TRANSLATOR_TREEOPS_DEFERGLOBALINITIALIZERS_H_
17#define COMPILER_TRANSLATOR_TREEOPS_DEFERGLOBALINITIALIZERS_H_
18
19namespace sh
20{
21
22class TIntermBlock;
23class TSymbolTable;
24
25void DeferGlobalInitializers(TIntermBlock *root,
26 bool initializeUninitializedGlobals,
27 bool canUseLoopsToInitialize,
28 bool highPrecisionSupported,
29 TSymbolTable *symbolTable);
30
31} // namespace sh
32
33#endif // COMPILER_TRANSLATOR_TREEOPS_DEFERGLOBALINITIALIZERS_H_
34