Shader: Add module ID (UUID)

include/Nazara/Shader/Ast/Module.hpp

@@ -8,26 +8,43 @@
 #define NAZARA_SHADER_AST_MODULE_HPP
 
 #include <Nazara/Prerequisites.hpp>
+#include <Nazara/Core/Uuid.hpp>
 #include <Nazara/Shader/Config.hpp>
 #include <Nazara/Shader/Ast/Nodes.hpp>
 #include <memory>
 
 namespace Nz::ShaderAst
 {
-	struct Module;
+	class Module;
 
 	using ModulePtr = std::shared_ptr<Module>;
 
-	struct Module
+	class Module
 	{
-		struct Metadata
-		{
-			UInt32 shaderLangVersion;
-		};
+		public:
+			struct Metadata;
 
-		std::shared_ptr<const Metadata> metadata;
-		MultiStatementPtr rootNode;
+			inline Module(UInt32 shaderLangVersion);
+			inline Module(std::shared_ptr<const Metadata> metadata);
+			inline Module(std::shared_ptr<const Metadata> metadata, MultiStatementPtr rootNode);
+			Module(const Module&) = default;
+			Module(Module&&) noexcept = default;
+			~Module() = default;
+
+			Module& operator=(const Module&) = default;
+			Module& operator=(Module&&) noexcept = default;
+
+			std::shared_ptr<const Metadata> metadata;
+			MultiStatementPtr rootNode;
+
+			struct Metadata
+			{
+				UInt32 shaderLangVersion;
+				Uuid moduleId;
+			};
 	};
 }
 
+#include <Nazara/Shader/Ast/Module.inl>
+
 #endif // NAZARA_SHADER_AST_MODULE_HPP

include/Nazara/Shader/Ast/Module.inl

@@ -0,0 +1,33 @@
+// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Shader module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Shader/Ast/Module.hpp>
+#include <Nazara/Shader/ShaderBuilder.hpp>
+#include <Nazara/Shader/Debug.hpp>
+
+namespace Nz::ShaderAst
+{
+	inline Module::Module(UInt32 shaderLangVersion)
+	{
+		auto mutMetadata = std::make_shared<Metadata>();
+		mutMetadata->moduleId = Uuid::Generate();
+		mutMetadata->shaderLangVersion = shaderLangVersion;
+
+		metadata = std::move(mutMetadata);
+		rootNode = ShaderBuilder::MultiStatement();
+	}
+
+	inline Module::Module(std::shared_ptr<const Metadata> metadata) :
+	Module(std::move(metadata), ShaderBuilder::MultiStatement())
+	{
+	}
+
+	inline Module::Module(std::shared_ptr<const Metadata> Metadata, MultiStatementPtr RootNode) :
+	metadata(std::move(Metadata)),
+	rootNode(std::move(RootNode))
+	{
+	}
+}
+
+#include <Nazara/Shader/DebugOff.hpp>

src/Nazara/OpenGLRenderer/OpenGLRenderPipeline.cpp

@@ -48,15 +48,10 @@ namespace Nz
 			{
 				if (!stageFlags.Test(stage))
 				{
-					ShaderAst::Module dummyModule;
+					ShaderAst::Module dummyModule(100);
 					dummyModule.rootNode = ShaderBuilder::MultiStatement();
 					dummyModule.rootNode->statements.push_back(ShaderBuilder::DeclareFunction(stage, "main", {}, {}));
 
-					std::shared_ptr<ShaderAst::Module::Metadata> metadata = std::make_shared<ShaderAst::Module::Metadata>();
-					metadata->shaderLangVersion = 100;
-
-					dummyModule.metadata = std::move(metadata);
-
 					OpenGLShaderModule shaderModule(device, stage, dummyModule);
 					stageFlags |= shaderModule.Attach(m_program, pipelineLayout.GetBindingMapping());
 				}

src/Nazara/Shader/Ast/AstConstantPropagationVisitor.cpp

@@ -737,20 +737,16 @@ namespace Nz::ShaderAst
 
 	ModulePtr AstConstantPropagationVisitor::Process(const Module& shaderModule)
 	{
-		ModulePtr clone = std::make_shared<Module>();
-		clone->metadata = shaderModule.metadata;
-		clone->rootNode = static_unique_pointer_cast<MultiStatement>(Process(*shaderModule.rootNode));
+		auto rootnode = static_unique_pointer_cast<MultiStatement>(Process(*shaderModule.rootNode));
 
-		return clone;
+		return std::make_shared<Module>(shaderModule.metadata, std::move(rootnode));
 	}
 
 	ModulePtr AstConstantPropagationVisitor::Process(const Module& shaderModule, const Options& options)
 	{
-		ModulePtr clone = std::make_shared<Module>();
-		clone->metadata = shaderModule.metadata;
-		clone->rootNode = static_unique_pointer_cast<MultiStatement>(Process(*shaderModule.rootNode, options));
+		auto rootNode = static_unique_pointer_cast<MultiStatement>(Process(*shaderModule.rootNode, options));
 
-		return clone;
+		return std::make_shared<Module>(shaderModule.metadata, std::move(rootNode));
 	}
 
 	ExpressionPtr AstConstantPropagationVisitor::Clone(BinaryExpression& node)

src/Nazara/Shader/Ast/AstSerializer.cpp

@@ -346,6 +346,7 @@ namespace Nz::ShaderAst
 	{
 		m_stream << s_magicNumber << s_currentVersion;
 
+		m_stream << module.metadata->moduleId;
 		m_stream << module.metadata->shaderLangVersion;
 		Serialize(*module.rootNode);
 
@@ -542,14 +543,12 @@ namespace Nz::ShaderAst
 		if (version > s_currentVersion)
 			throw std::runtime_error("unsupported version");
 
-		ModulePtr module = std::make_shared<Module>();
-
 		std::shared_ptr<Module::Metadata> metadata = std::make_shared<Module::Metadata>();
+		m_stream >> metadata->moduleId;
 		m_stream >> metadata->shaderLangVersion;
 
-		module->metadata = std::move(metadata);
+		ModulePtr module = std::make_shared<Module>(std::move(metadata));
 
-		module->rootNode = ShaderBuilder::MultiStatement();
 		ShaderSerializerVisitor visitor(*this);
 		module->rootNode->Visit(visitor);
 

src/Nazara/Shader/Ast/EliminateUnusedPassVisitor.cpp

@@ -25,11 +25,9 @@ namespace Nz::ShaderAst
 
 	ModulePtr EliminateUnusedPassVisitor::Process(const Module& shaderModule, const DependencyCheckerVisitor::UsageSet& usageSet)
 	{
-		ModulePtr clone = std::make_shared<Module>();
-		clone->metadata = shaderModule.metadata;
-		clone->rootNode = static_unique_pointer_cast<MultiStatement>(Process(*shaderModule.rootNode, usageSet));
-
-		return clone;
+		auto rootNode = static_unique_pointer_cast<MultiStatement>(Process(*shaderModule.rootNode, usageSet));
+		
+		return std::make_shared<Module>(shaderModule.metadata, std::move(rootNode));
 	}
 
 	StatementPtr EliminateUnusedPassVisitor::Process(Statement& statement, const DependencyCheckerVisitor::UsageSet& usageSet)

src/Nazara/Shader/Ast/SanitizeVisitor.cpp

@@ -141,8 +141,7 @@ namespace Nz::ShaderAst
 
 	ModulePtr SanitizeVisitor::Sanitize(const Module& module, const Options& options, std::string* error)
 	{
-		ModulePtr clone = std::make_shared<Module>();
-		clone->metadata = module.metadata;
+		ModulePtr clone = std::make_shared<Module>(module.metadata);
 
 		Context currentContext;
 		currentContext.options = options;

src/Nazara/Shader/ShaderLangParser.cpp

@@ -304,13 +304,7 @@ namespace Nz::ShaderLang
 		if (!moduleVersion.has_value())
 			throw AttributeError{ "missing module version" };
 
-		m_context->module = std::make_shared<ShaderAst::Module>();
-		m_context->module->rootNode = ShaderBuilder::MultiStatement();
-
-		std::shared_ptr<ShaderAst::Module::Metadata> moduleMetadata = std::make_shared<ShaderAst::Module::Metadata>();
-		moduleMetadata->shaderLangVersion = *moduleVersion;
-
-		m_context->module->metadata = std::move(moduleMetadata);
+		m_context->module = std::make_shared<ShaderAst::Module>(*moduleVersion);
 
 		Expect(Advance(), TokenType::Semicolon);
 	}

src/ShaderNode/ShaderGraph.cpp

@@ -459,12 +459,7 @@ QJsonObject ShaderGraph::Save()
 
 Nz::ShaderAst::ModulePtr ShaderGraph::ToModule() const
 {
-	Nz::ShaderAst::ModulePtr shaderModule = std::make_shared<Nz::ShaderAst::Module>();
-
-	std::shared_ptr<Nz::ShaderAst::Module::Metadata> moduleMetada = std::make_shared<Nz::ShaderAst::Module::Metadata>();
-	moduleMetada->shaderLangVersion = 100;
-
-	shaderModule->metadata = std::move(moduleMetada);
+	Nz::ShaderAst::ModulePtr shaderModule = std::make_shared<Nz::ShaderAst::Module>(100);
 
 	// Declare all options
 	for (const auto& option : m_options)