79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
// Copyright (C) 2016 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_GLSLWRITER_HPP
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#define NAZARA_GLSLWRITER_HPP
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#include <Nazara/Prerequesites.hpp>
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#include <Nazara/Core/StringStream.hpp>
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#include <Nazara/Renderer/Config.hpp>
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#include <Nazara/Renderer/ShaderWriter.hpp>
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#include <map>
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#include <set>
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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 GlslWriter : public ShaderWriter
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{
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public:
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GlslWriter();
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GlslWriter(const GlslWriter&) = delete;
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GlslWriter(GlslWriter&&) = delete;
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~GlslWriter() = default;
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Nz::String Generate(const ShaderAst::StatementPtr& node) override;
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void RegisterFunction(const String& name, ShaderAst::StatementPtr statement, std::initializer_list<ShaderAst::VariablePtr> parameters, ShaderAst::ExpressionType ret) override;
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void RegisterVariable(ShaderAst::VariableType kind, const String& name, ShaderAst::ExpressionType type) override;
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void SetGlslVersion(unsigned int version);
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void Write(const ShaderAst::AssignOp& node) override;
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void Write(const ShaderAst::Branch& node) override;
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void Write(const ShaderAst::BinaryOp& node) override;
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void Write(const ShaderAst::Constant& node) override;
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void Write(const ShaderAst::ExpressionStatement& node) override;
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void Write(const ShaderAst::NodePtr& node) override;
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void Write(const ShaderAst::StatementBlock& node) override;
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void Write(const ShaderAst::Variable& node) override;
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private:
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struct Function;
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void Append(ShaderAst::ExpressionType type);
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void Append(const String& txt);
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void AppendFunction(Function& func);
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void AppendLine(const Nz::String& txt = Nz::String());
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void EnterScope();
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void LeaveScope();
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struct Function
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{
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std::set<std::pair<ShaderAst::ExpressionType, String>> variables;
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std::vector<ShaderAst::VariablePtr> parameters;
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ShaderAst::ExpressionType retType;
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ShaderAst::StatementPtr node;
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String name;
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};
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struct State
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{
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std::set<std::pair<ShaderAst::ExpressionType, String>> m_uniforms;
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StringStream stream;
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unsigned int indentLevel = 0;
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};
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std::unordered_map<String, Function> m_functions;
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Function* m_currentFunction;
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State* m_currentState;
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unsigned int m_glslVersion;
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};
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}
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#endif // NAZARA_GLSLWRITER_HPP
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