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70 lines
2.6 KiB
C++
70 lines
2.6 KiB
C++
// SPDX-FileCopyrightText: 2019-2024 Connor McLaughlin <stenzek@gmail.com>
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// SPDX-License-Identifier: CC-BY-NC-ND-4.0
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#pragma once
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#include "gpu.h"
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#include "gpu_backend.h"
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#include "util/gpu_device.h"
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#include "common/heap_array.h"
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#include <memory>
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// TODO: Move to cpp
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// TODO: Rename to GPUSWBackend, preserved to avoid conflicts.
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class GPU_SW final : public GPUBackend
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{
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public:
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GPU_SW(GPUPresenter& presenter);
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~GPU_SW() override;
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bool Initialize(bool upload_vram, Error* error) override;
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void RestoreDeviceContext() override;
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void FlushRender() override;
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u32 GetResolutionScale() const override;
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void ReadVRAM(u32 x, u32 y, u32 width, u32 height) override;
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void FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color, bool interlaced_rendering, u8 active_line_lsb) override;
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void UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void* data, bool set_mask, bool check_mask) override;
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void CopyVRAM(u32 src_x, u32 src_y, u32 dst_x, u32 dst_y, u32 width, u32 height, bool set_mask,
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bool check_mask) override;
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void DrawPolygon(const GPUBackendDrawPolygonCommand* cmd) override;
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void DrawPrecisePolygon(const GPUBackendDrawPrecisePolygonCommand* cmd) override;
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void DrawLine(const GPUBackendDrawLineCommand* cmd) override;
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void DrawPreciseLine(const GPUBackendDrawPreciseLineCommand* cmd) override;
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void DrawSprite(const GPUBackendDrawRectangleCommand* cmd) override;
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void DrawingAreaChanged() override;
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void ClearCache() override;
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void OnBufferSwapped() override;
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void UpdateDisplay(const GPUBackendUpdateDisplayCommand* cmd) override;
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void ClearVRAM() override;
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void LoadState(const GPUBackendLoadStateCommand* cmd) override;
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bool AllocateMemorySaveState(System::MemorySaveState& mss, Error* error) override;
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void DoMemoryState(StateWrapper& sw, System::MemorySaveState& mss) override;
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private:
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static constexpr GPUTexture::Format FORMAT_FOR_24BIT = GPUTexture::Format::RGBA8; // RGBA8 always supported.
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template<GPUTexture::Format display_format>
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bool CopyOut15Bit(u32 src_x, u32 src_y, u32 width, u32 height, u32 line_skip);
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bool CopyOut24Bit(u32 src_x, u32 src_y, u32 skip_x, u32 width, u32 height, u32 line_skip);
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bool CopyOut(u32 src_x, u32 src_y, u32 skip_x, u32 width, u32 height, u32 line_skip, bool is_24bit);
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GPUTexture* GetDisplayTexture(u32 width, u32 height, GPUTexture::Format format);
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FixedHeapArray<u8, GPU_MAX_DISPLAY_WIDTH * GPU_MAX_DISPLAY_HEIGHT * sizeof(u32)> m_upload_buffer;
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GPUTexture::Format m_16bit_display_format = GPUTexture::Format::Unknown;
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std::unique_ptr<GPUTexture> m_upload_texture;
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};
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