Split shader generation to a new module

include/Nazara/Shader/ShaderBuilder.inl

@@ -0,0 +1,52 @@
+// Copyright (C) 2020 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Shader generator"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Shader/ShaderBuilder.hpp>
+#include <Nazara/Shader/Debug.hpp>
+
+namespace Nz::ShaderBuilder
+{
+	template<typename T>
+	template<typename... Args>
+	std::shared_ptr<T> GenBuilder<T>::operator()(Args&&... args) const
+	{
+		return T::Build(std::forward<Args>(args)...);
+	}
+
+	template<ShaderNodes::AssignType op>
+	std::shared_ptr<ShaderNodes::AssignOp> AssignOpBuilder<op>::operator()(const ShaderNodes::ExpressionPtr& left, const ShaderNodes::ExpressionPtr& right) const
+	{
+		return ShaderNodes::AssignOp::Build(op, left, right);
+	}
+
+	template<ShaderNodes::BinaryType op>
+	std::shared_ptr<ShaderNodes::BinaryOp> BinOpBuilder<op>::operator()(const ShaderNodes::ExpressionPtr& left, const ShaderNodes::ExpressionPtr& right) const
+	{
+		return ShaderNodes::BinaryOp::Build(op, left, right);
+	}
+
+	inline std::shared_ptr<ShaderNodes::Variable> BuiltinBuilder::operator()(ShaderNodes::BuiltinEntry builtin) const
+	{
+		ShaderNodes::BasicType exprType = ShaderNodes::BasicType::Void;
+
+		switch (builtin)
+		{
+			case ShaderNodes::BuiltinEntry::VertexPosition:
+				exprType = ShaderNodes::BasicType::Float4;
+				break;
+		}
+
+		NazaraAssert(exprType != ShaderNodes::BasicType::Void, "Unhandled builtin");
+
+		return ShaderNodes::BuiltinVariable::Build(builtin, exprType);
+	}
+
+	template<ShaderNodes::BasicType Type, typename... Args>
+	std::shared_ptr<ShaderNodes::Cast> Cast(Args&&... args)
+	{
+		return ShaderNodes::Cast::Build(Type, std::forward<Args>(args)...);
+	}
+}
+
+#include <Nazara/Shader/DebugOff.hpp>