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Diffstat (limited to 'gfx/angle/checkout/src/compiler/translator/tree_ops/DeferGlobalInitializers.h')
-rw-r--r-- | gfx/angle/checkout/src/compiler/translator/tree_ops/DeferGlobalInitializers.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/compiler/translator/tree_ops/DeferGlobalInitializers.h b/gfx/angle/checkout/src/compiler/translator/tree_ops/DeferGlobalInitializers.h new file mode 100644 index 0000000000..58a38a982b --- /dev/null +++ b/gfx/angle/checkout/src/compiler/translator/tree_ops/DeferGlobalInitializers.h @@ -0,0 +1,38 @@ +// +// 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; + +[[nodiscard]] bool DeferGlobalInitializers(TCompiler *compiler, + TIntermBlock *root, + bool initializeUninitializedGlobals, + bool canUseLoopsToInitialize, + bool highPrecisionSupported, + bool forceDeferGlobalInitializers, + TSymbolTable *symbolTable); + +} // namespace sh + +#endif // COMPILER_TRANSLATOR_TREEOPS_DEFERGLOBALINITIALIZERS_H_ |