diff options
Diffstat (limited to 'gfx/angle/checkout/src/compiler/translator/tree_ops/d3d/RewriteAtomicFunctionExpressions.h')
-rw-r--r-- | gfx/angle/checkout/src/compiler/translator/tree_ops/d3d/RewriteAtomicFunctionExpressions.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/compiler/translator/tree_ops/d3d/RewriteAtomicFunctionExpressions.h b/gfx/angle/checkout/src/compiler/translator/tree_ops/d3d/RewriteAtomicFunctionExpressions.h new file mode 100644 index 0000000000..60e6ffa2d1 --- /dev/null +++ b/gfx/angle/checkout/src/compiler/translator/tree_ops/d3d/RewriteAtomicFunctionExpressions.h @@ -0,0 +1,42 @@ +// +// Copyright 2018 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. +// +// RewriteAtomicFunctionExpressions rewrites the expressions that contain +// atomic function calls and cannot be directly translated into HLSL into +// several simple ones that can be easily handled in the HLSL translator. +// +// We need to rewite these expressions because: +// 1. All GLSL atomic functions have return values, which all represent the +// original value of the shared or ssbo variable; while all HLSL atomic +// functions don't, and the original value can be stored in the last +// parameter of the function call. +// 2. For HLSL atomic functions, the last parameter that stores the original +// value is optional except for InterlockedExchange and +// InterlockedCompareExchange. Missing original_value in the call of +// InterlockedExchange or InterlockedCompareExchange results in a compile +// error from HLSL compiler. +// +// RewriteAtomicFunctionExpressions is a function that can modify the AST +// to ensure all the expressions that contain atomic function calls can be +// directly translated into HLSL expressions. + +#ifndef COMPILER_TRANSLATOR_TREEOPS_D3D_REWRITE_ATOMIC_FUNCTION_EXPRESSIONS_H_ +#define COMPILER_TRANSLATOR_TREEOPS_D3D_REWRITE_ATOMIC_FUNCTION_EXPRESSIONS_H_ + +#include "common/angleutils.h" + +namespace sh +{ +class TCompiler; +class TIntermNode; +class TSymbolTable; + +[[nodiscard]] bool RewriteAtomicFunctionExpressions(TCompiler *compiler, + TIntermNode *root, + TSymbolTable *symbolTable, + int shaderVersion); +} // namespace sh + +#endif // COMPILER_TRANSLATOR_TREEOPS_D3D_REWRITE_ATOMIC_FUNCTION_EXPRESSIONS_H_ |