NazaraEngine/include/Nazara/Graphics/SpriteChainRenderer.hpp

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3.8 KiB
C++

// Copyright (C) 2024 Jérôme "SirLynix" Leclercq (lynix680@gmail.com)
// 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_GRAPHICS_SPRITECHAINRENDERER_HPP
#define NAZARA_GRAPHICS_SPRITECHAINRENDERER_HPP
#include <NazaraUtils/Prerequisites.hpp>
#include <Nazara/Graphics/ElementRenderer.hpp>
#include <Nazara/Graphics/RenderSpriteChain.hpp>
#include <Nazara/Math/Rect.hpp>
#include <Nazara/Renderer/ShaderBinding.hpp>
#include <Nazara/Renderer/UploadPool.hpp>
#include <memory>
#include <unordered_map>
#include <vector>
namespace Nz
{
class RenderDevice;
class RenderPipeline;
class ShaderBinding;
class Texture;
class VertexDeclaration;
class WorldInstance;
struct SpriteChainRendererData : public ElementRendererData
{
struct DrawCall
{
const RenderBuffer* vertexBuffer;
const RenderPipeline* renderPipeline;
const ShaderBinding* shaderBinding;
std::size_t firstIndex;
std::size_t quadCount;
Recti scissorBox;
};
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<RenderBuffer>> vertexBuffers;
std::vector<ShaderBindingPtr> shaderBindings;
};
class NAZARA_GRAPHICS_API SpriteChainRenderer final : public ElementRenderer
{
public:
SpriteChainRenderer(RenderDevice& device, std::size_t maxVertexBufferSize = 32 * 1024);
~SpriteChainRenderer() = default;
RenderElementPool<RenderSpriteChain>& GetPool() override;
std::unique_ptr<ElementRendererData> InstanciateData() override;
void Prepare(const ViewerInstance& viewerInstance, ElementRendererData& rendererData, RenderResources& currentFrame, std::size_t elementCount, const Pointer<const RenderElement>* elements, SparsePtr<const RenderStates> renderStates) override;
void PrepareEnd(RenderResources& renderResources, ElementRendererData& rendererData) override;
void Render(const ViewerInstance& viewerInstance, ElementRendererData& rendererData, CommandBufferBuilder& commandBuffer, std::size_t elementCount, const Pointer<const RenderElement>* elements) override;
void Reset(ElementRendererData& rendererData, RenderResources& currentFrame) override;
private:
void Flush();
void FlushDrawCall();
void FlushDrawData();
struct BufferCopy
{
RenderBuffer* targetBuffer;
UploadPool::Allocation* allocation;
std::size_t size;
};
struct PendingData
{
std::size_t firstQuadIndex = 0;
SpriteChainRendererData::DrawCall* currentDrawCall = nullptr;
UploadPool::Allocation* currentAllocation = nullptr;
UInt8* currentAllocationMemPtr = nullptr;
const VertexDeclaration* currentVertexDeclaration = nullptr;
RenderBuffer* currentVertexBuffer = nullptr;
const MaterialInstance* currentMaterialInstance = nullptr;
const RenderPipeline* currentPipeline = nullptr;
const ShaderBinding* currentShaderBinding = nullptr;
const Texture* currentTextureOverlay = nullptr;
const WorldInstance* currentWorldInstance = nullptr;
RenderBufferView currentLightData;
Recti currentScissorBox = Recti(-1, -1, -1, -1);
};
struct VertexBufferPool
{
std::vector<std::shared_ptr<RenderBuffer>> vertexBuffers;
};
std::shared_ptr<RenderBuffer> m_indexBuffer;
std::shared_ptr<VertexBufferPool> m_vertexBufferPool;
std::size_t m_maxVertexBufferSize;
std::size_t m_maxVertexCount;
std::vector<BufferCopy> m_pendingCopies;
std::vector<ShaderBinding::Binding> m_bindingCache;
RenderElementPool<RenderSpriteChain> m_spriteChainPool;
PendingData m_pendingData;
RenderDevice& m_device;
};
}
#include <Nazara/Graphics/SpriteChainRenderer.inl>
#endif // NAZARA_GRAPHICS_SPRITECHAINRENDERER_HPP