101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
// Copyright (C) 2020 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Renderer 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_SPIRVWRITER_HPP
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#define NAZARA_SPIRVWRITER_HPP
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#include <Nazara/Prerequisites.hpp>
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#include <Nazara/Renderer/Config.hpp>
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#include <Nazara/Renderer/ShaderAst.hpp>
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#include <Nazara/Renderer/ShaderVarVisitor.hpp>
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#include <Nazara/Renderer/ShaderVisitor.hpp>
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#include <Nazara/Renderer/ShaderWriter.hpp>
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#include <set>
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#include <string_view>
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#include <unordered_map>
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namespace Nz
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{
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class NAZARA_RENDERER_API SpirvWriter : public ShaderVarVisitor, public ShaderVisitor
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{
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public:
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struct Environment;
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SpirvWriter();
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SpirvWriter(const SpirvWriter&) = delete;
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SpirvWriter(SpirvWriter&&) = delete;
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~SpirvWriter() = default;
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std::vector<UInt32> Generate(const ShaderAst& shader);
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void SetEnv(Environment environment);
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struct Environment
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{
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};
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private:
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struct Opcode;
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inline void Append(const char* str);
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void Append(const std::string_view& str);
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void Append(const Opcode& opcode, unsigned int wordCount);
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void Append(UInt32 codepoint);
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void Append(std::initializer_list<UInt32> codepoints);
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template<typename... Args> void Append(Opcode opcode, const Args&... args);
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template<typename T> void Append(T value);
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void AppendHeader();
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inline unsigned int CountWord(const char* str);
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unsigned int CountWord(const std::string_view& str);
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template<typename T> unsigned int CountWord(const T& value);
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template<typename T1, typename T2, typename... Args> unsigned int CountWord(const T1& value, const T2& value2, const Args&... rest);
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using ShaderVarVisitor::Visit;
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using ShaderVisitor::Visit;
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void Visit(const ShaderNodes::ExpressionPtr& expr, bool encloseIfRequired = false);
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void Visit(const ShaderNodes::AccessMember& node) override;
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void Visit(const ShaderNodes::AssignOp& node) override;
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void Visit(const ShaderNodes::Branch& node) override;
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void Visit(const ShaderNodes::BinaryOp& node) override;
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void Visit(const ShaderNodes::BuiltinVariable& var) override;
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void Visit(const ShaderNodes::Cast& node) override;
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void Visit(const ShaderNodes::Constant& node) override;
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void Visit(const ShaderNodes::DeclareVariable& node) override;
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void Visit(const ShaderNodes::ExpressionStatement& node) override;
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void Visit(const ShaderNodes::Identifier& node) override;
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void Visit(const ShaderNodes::InputVariable& var) override;
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void Visit(const ShaderNodes::IntrinsicCall& node) override;
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void Visit(const ShaderNodes::LocalVariable& var) override;
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void Visit(const ShaderNodes::ParameterVariable& var) override;
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void Visit(const ShaderNodes::OutputVariable& var) override;
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void Visit(const ShaderNodes::Sample2D& node) override;
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void Visit(const ShaderNodes::StatementBlock& node) override;
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void Visit(const ShaderNodes::SwizzleOp& node) override;
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void Visit(const ShaderNodes::UniformVariable& var) override;
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struct Context
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{
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const ShaderAst* shader = nullptr;
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const ShaderAst::Function* currentFunction = nullptr;
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};
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struct State
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{
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std::vector<UInt32> output;
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};
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Context m_context;
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Environment m_environment;
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State* m_currentState;
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};
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}
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#include <Nazara/Renderer/SpirvWriter.inl>
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#endif
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