mirror of
https://github.com/ran-j/PS2Recomp.git
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Ran-j
c8c86661fa
feat: Added PS2Vfs for virtual file system operations, including file opening, reading, writing, and path resolution. feat: Improve VIF1 data processing to handle GIF image packets more efficiently.
83 lines
3.6 KiB
C++
83 lines
3.6 KiB
C++
#pragma once
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#include "runtime/gs/gs_backend.h"
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#include <array>
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#include <functional>
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#include <mutex>
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#include <vector>
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class GSCpuBackend final : public GSRasterBackend
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{
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public:
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GSCpuBackend();
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void Initialize(uint8_t *vram, uint32_t vramSize) override;
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void Reset() override;
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void Submit(const GSPrimitiveBatch &batch) override;
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void LoadClut(const GSTex0Reg &tex0, const GSTexClutReg &texclut) override;
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void BeginTransfer(const GSTransferCommand &command) override;
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void UploadImage(const uint8_t *data, uint32_t sizeBytes) override;
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void Flush() override;
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void TextureFlush() override;
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void Sync(GSSyncReason reason) override;
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PresentationFrame Present(const GSPresentationRequest &request) override;
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bool ClearFramebuffer(const GSContext &context, uint32_t rgba) override;
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uint32_t ConsumeLocalToHostBytes(uint8_t *dst, uint32_t maxBytes) override;
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uint32_t ReadVram(uint32_t psm, uint32_t base, uint32_t bw, uint32_t x, uint32_t y) const override;
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void WriteVram(uint32_t psm, uint32_t base, uint32_t bw, uint32_t x, uint32_t y, uint32_t value) override;
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void SnapshotVram(std::vector<uint8_t> &out) const override;
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GSTransferSnapshot GetTransferSnapshot() const override;
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private:
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void ResetUnlocked();
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void LoadClutUnlocked(const GSTex0Reg &tex0, const GSTexClutReg &texclut);
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uint32_t ReadVramUnlocked(uint32_t psm, uint32_t base, uint32_t bw, uint32_t x, uint32_t y) const;
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uint32_t ReadTextureVramUnlocked(uint32_t psm, uint32_t base, uint32_t bw, uint32_t x, uint32_t y);
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void WriteVramUnlocked(uint32_t psm, uint32_t base, uint32_t bw, uint32_t x, uint32_t y, uint32_t value);
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void DrawPrimitive(const GSPrimitiveBatch &batch);
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void DrawSprite(const GSPrimitiveBatch &batch);
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void DrawTriangle(const GSPrimitiveBatch &batch);
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void DrawLine(const GSPrimitiveBatch &batch);
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void WritePixel(const GSDrawState &state, int x, int y, int z, uint8_t r, uint8_t g, uint8_t b, uint8_t a, uint8_t fog);
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uint32_t SampleTexture(const GSDrawState &state, float s, float t, float q, uint16_t u, uint16_t v);
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uint32_t LookupCLUT(const GSDrawState &state, uint8_t index, uint8_t cpsm, uint8_t csm, uint8_t csa, uint8_t sourcePsm);
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void PerformLocalToLocalTransfer();
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void PerformLocalToHostTransfer();
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PresentationFrame PresentFromLocalMemory(const GSPresentationRequest &request);
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bool CopyFrameToHostRgba(const GSFrameReg &frame,
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uint32_t width,
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uint32_t height,
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std::vector<uint8_t> &outPixels,
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bool preserveAlpha,
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bool useLocalMemoryLayout,
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bool frameBaseIsPages,
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uint32_t sourceOriginX,
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uint32_t sourceOriginY) const;
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using WriteVramFunc = std::function<void(uint8_t *, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t)>;
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using ReadVramFunc = std::function<uint32_t(uint8_t *, uint32_t, uint32_t, uint32_t, uint32_t)>;
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static constexpr size_t kPsmHandlerCount = 1u << 6u;
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mutable std::mutex m_mutex;
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uint8_t *m_vram = nullptr;
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uint32_t m_vramSize = 0;
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std::array<ReadVramFunc, kPsmHandlerCount> m_readVramFuncs{};
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std::array<WriteVramFunc, kPsmHandlerCount> m_writeVramFuncs{};
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std::array<uint16_t, 512> m_clut{};
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std::array<uint32_t, 2> m_clutCbp{};
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std::vector<uint8_t> m_texturePageBuffer;
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uint32_t m_texturePageIndex = UINT32_MAX;
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GSTransferCommand m_transfer{};
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GSTransferSnapshot m_transferState{};
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std::vector<uint8_t> m_localToHostBuffer;
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size_t m_localToHostReadPos = 0;
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};
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