51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - Shader module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#pragma once
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#ifndef NAZARA_SHADER_AST_ELIMINATEUNUSEDPASSVISITOR_HPP
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#define NAZARA_SHADER_AST_ELIMINATEUNUSEDPASSVISITOR_HPP
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#include <Nazara/Prerequisites.hpp>
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#include <Nazara/Core/Bitset.hpp>
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#include <Nazara/Shader/Config.hpp>
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#include <Nazara/Shader/Ast/AstCloner.hpp>
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namespace Nz::ShaderAst
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{
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class NAZARA_SHADER_API EliminateUnusedPassVisitor : AstCloner
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{
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public:
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EliminateUnusedPassVisitor() = default;
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EliminateUnusedPassVisitor(const EliminateUnusedPassVisitor&) = delete;
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EliminateUnusedPassVisitor(EliminateUnusedPassVisitor&&) = delete;
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~EliminateUnusedPassVisitor() = default;
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StatementPtr Process(Statement& statement);
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EliminateUnusedPassVisitor& operator=(const EliminateUnusedPassVisitor&) = delete;
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EliminateUnusedPassVisitor& operator=(EliminateUnusedPassVisitor&&) = delete;
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private:
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using AstCloner::Clone;
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StatementPtr Clone(DeclareExternalStatement& node) override;
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StatementPtr Clone(DeclareFunctionStatement& node) override;
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StatementPtr Clone(DeclareStructStatement& node) override;
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StatementPtr Clone(DeclareVariableStatement& node) override;
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bool IsFunctionUsed(std::size_t varIndex) const;
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bool IsStructUsed(std::size_t varIndex) const;
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bool IsVariableUsed(std::size_t varIndex) const;
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struct Context;
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Context* m_context;
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};
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inline StatementPtr EliminateUnusedPass(Statement& ast);
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}
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#include <Nazara/Shader/Ast/EliminateUnusedPassVisitor.inl>
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#endif // NAZARA_SHADER_AST_ELIMINATEUNUSEDPASSVISITOR_HPP
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