| // |
| // Copyright 2016 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // DeferGlobalInitializers is an AST traverser that moves global initializers into a separate |
| // function that is called in the beginning of main(). This enables initialization of globals with |
| // uniforms or non-constant globals, as allowed by the WebGL spec. Some initializers referencing |
| // non-constants may need to be unfolded into if statements in HLSL - this kind of steps should be |
| // done after DeferGlobalInitializers is run. Note that it's important that the function definition |
| // is at the end of the shader, as some globals may be declared after main(). |
| // |
| // It can also initialize all uninitialized globals. |
| // |
| |
| #ifndef COMPILER_TRANSLATOR_TREEOPS_DEFERGLOBALINITIALIZERS_H_ |
| #define COMPILER_TRANSLATOR_TREEOPS_DEFERGLOBALINITIALIZERS_H_ |
| |
| #include "common/angleutils.h" |
| |
| namespace sh |
| { |
| |
| class TCompiler; |
| class TIntermBlock; |
| class TSymbolTable; |
| |
| ANGLE_NO_DISCARD bool DeferGlobalInitializers(TCompiler *compiler, |
| TIntermBlock *root, |
| bool initializeUninitializedGlobals, |
| bool canUseLoopsToInitialize, |
| bool highPrecisionSupported, |
| TSymbolTable *symbolTable); |
| |
| } // namespace sh |
| |
| #endif // COMPILER_TRANSLATOR_TREEOPS_DEFERGLOBALINITIALIZERS_H_ |