Graphics: Add SpriteChainRenderer

include/Nazara/Graphics/SpriteChainRenderer.hpp

@@ -0,0 +1,68 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Graphics module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_SPRITECHAINRENDERER_HPP
+#define NAZARA_SPRITECHAINRENDERER_HPP
+
+#include <Nazara/Prerequisites.hpp>
+#include <Nazara/Graphics/ElementRenderer.hpp>
+#include <memory>
+#include <unordered_map>
+#include <vector>
+
+namespace Nz
+{
+	class AbstractBuffer;
+	class RenderDevice;
+	class RenderPipeline;
+	class RenderSpriteChain;
+	class ShaderBinding;
+
+	class NAZARA_GRAPHICS_API SpriteChainRenderer : public ElementRenderer
+	{
+		public:
+			SpriteChainRenderer(RenderDevice& device, std::size_t maxVertexBufferSize = 32 * 1024);
+			~SpriteChainRenderer() = default;
+
+			std::unique_ptr<ElementRendererData> InstanciateData();
+			void Prepare(ElementRendererData& rendererData, RenderFrame& currentFrame, const Pointer<const RenderElement>* elements, std::size_t elementCount);
+			void Render(ElementRendererData& rendererData, CommandBufferBuilder& commandBuffer, const Pointer<const RenderElement>* elements, std::size_t elementCount) override;
+			void Reset(ElementRendererData& rendererData, RenderFrame& currentFrame);
+
+		private:
+			std::shared_ptr<AbstractBuffer> m_indexBuffer;
+			std::size_t m_maxVertexBufferSize;
+			std::size_t m_maxVertexCount;
+			RenderDevice& m_device;
+	};
+
+	struct SpriteChainRendererData : public ElementRendererData
+	{
+		struct DrawCall
+		{
+			const AbstractBuffer* vertexBuffer;
+			const RenderPipeline* renderPipeline;
+			const ShaderBinding* instanceBinding;
+			const ShaderBinding* materialBinding;
+			std::size_t firstIndex;
+			std::size_t quadCount;
+		};
+
+		struct DrawCallIndices
+		{
+			std::size_t start;
+			std::size_t count;
+		};
+
+		std::unordered_map<const RenderSpriteChain*, DrawCallIndices> drawCallPerElement;
+		std::vector<DrawCall> drawCalls;
+		std::vector<std::shared_ptr<AbstractBuffer>> vertexBuffers;
+	};
+}
+
+#include <Nazara/Graphics/SpriteChainRenderer.inl>
+
+#endif