58fe411750
Because of some weird ass shit bug in nvidia driver if functions were forward declared before declaration of UBO they were using
120 lines
4.7 KiB
C++
120 lines
4.7 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_GLSLWRITER_HPP
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#define NAZARA_GLSLWRITER_HPP
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#include <Nazara/Prerequisites.hpp>
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#include <Nazara/Shader/Config.hpp>
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#include <Nazara/Shader/ShaderWriter.hpp>
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#include <Nazara/Shader/Ast/AstExpressionVisitorExcept.hpp>
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#include <Nazara/Shader/Ast/AstStatementVisitorExcept.hpp>
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#include <set>
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#include <sstream>
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#include <string>
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#include <vector>
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namespace Nz
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{
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class NAZARA_SHADER_API GlslWriter : public ShaderWriter, public ShaderAst::ExpressionVisitorExcept, public ShaderAst::StatementVisitorExcept
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{
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public:
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struct Environment;
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using ExtSupportCallback = std::function<bool(const std::string_view& name)>;
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inline 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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inline std::string Generate(ShaderAst::StatementPtr& shader, const States& states = {});
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std::string Generate(std::optional<ShaderStageType> shaderStage, ShaderAst::StatementPtr& shader, const States& states = {});
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void SetEnv(Environment environment);
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struct Environment
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{
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ExtSupportCallback extCallback;
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unsigned int glMajorVersion = 3;
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unsigned int glMinorVersion = 0;
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bool glES = false;
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bool flipYPosition = false;
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};
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static const char* GetFlipYUniformName();
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private:
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void Append(const ShaderAst::ExpressionType& type);
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void Append(ShaderAst::BuiltinEntry builtin);
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void Append(const ShaderAst::IdentifierType& identifierType);
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void Append(const ShaderAst::MatrixType& matrixType);
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void Append(ShaderAst::MemoryLayout layout);
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void Append(ShaderAst::NoType);
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void Append(ShaderAst::PrimitiveType type);
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void Append(const ShaderAst::SamplerType& samplerType);
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void Append(const ShaderAst::StructType& structType);
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void Append(const ShaderAst::UniformType& uniformType);
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void Append(const ShaderAst::VectorType& vecType);
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template<typename T> void Append(const T& param);
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template<typename T1, typename T2, typename... Args> void Append(const T1& firstParam, const T2& secondParam, Args&&... params);
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void AppendCommentSection(const std::string& section);
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void AppendFunctionDeclaration(const ShaderAst::DeclareFunctionStatement& node, bool forward = false);
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void AppendField(std::size_t structIndex, const std::size_t* memberIndices, std::size_t remainingMembers);
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void AppendHeader();
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void AppendLine(const std::string& txt = {});
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template<typename... Args> void AppendLine(Args&&... params);
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void AppendStatementList(std::vector<ShaderAst::StatementPtr>& statements);
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void EnterScope();
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void LeaveScope(bool skipLine = true);
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void HandleEntryPoint(ShaderAst::DeclareFunctionStatement& node);
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void HandleInOut();
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void RegisterStruct(std::size_t structIndex, ShaderAst::StructDescription desc);
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void RegisterVariable(std::size_t varIndex, std::string varName);
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void Visit(ShaderAst::ExpressionPtr& expr, bool encloseIfRequired = false);
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void Visit(ShaderAst::AccessMemberIndexExpression& node) override;
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void Visit(ShaderAst::AssignExpression& node) override;
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void Visit(ShaderAst::BinaryExpression& node) override;
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void Visit(ShaderAst::CallFunctionExpression& node) override;
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void Visit(ShaderAst::CastExpression& node) override;
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void Visit(ShaderAst::ConditionalExpression& node) override;
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void Visit(ShaderAst::ConstantExpression& node) override;
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void Visit(ShaderAst::IntrinsicExpression& node) override;
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void Visit(ShaderAst::SwizzleExpression& node) override;
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void Visit(ShaderAst::VariableExpression& node) override;
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void Visit(ShaderAst::UnaryExpression& node) override;
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void Visit(ShaderAst::BranchStatement& node) override;
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void Visit(ShaderAst::ConditionalStatement& node) override;
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void Visit(ShaderAst::DeclareExternalStatement& node) override;
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void Visit(ShaderAst::DeclareFunctionStatement& node) override;
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void Visit(ShaderAst::DeclareOptionStatement& node) override;
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void Visit(ShaderAst::DeclareStructStatement& node) override;
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void Visit(ShaderAst::DeclareVariableStatement& node) override;
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void Visit(ShaderAst::DiscardStatement& node) override;
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void Visit(ShaderAst::ExpressionStatement& node) override;
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void Visit(ShaderAst::MultiStatement& node) override;
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void Visit(ShaderAst::NoOpStatement& node) override;
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void Visit(ShaderAst::ReturnStatement& node) override;
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static bool HasExplicitBinding(ShaderAst::StatementPtr& shader);
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static bool HasExplicitLocation(ShaderAst::StatementPtr& shader);
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struct State;
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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/Shader/GlslWriter.inl>
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#endif // NAZARA_GLSLWRITER_HPP
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