270 lines
No EOL
7.6 KiB
C++
270 lines
No EOL
7.6 KiB
C++
#pragma once
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#include "stdafx.h"
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#include "PpuTypes.h"
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#include "../Utilities/ISerializable.h"
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#include "../Utilities/Timer.h"
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class Console;
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class InternalRegisters;
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class MemoryManager;
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class Ppu : public ISerializable
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{
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public:
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constexpr static uint32_t SpriteRamSize = 544;
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constexpr static uint32_t CgRamSize = 512;
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constexpr static uint32_t VideoRamSize = 0x10000;
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private:
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constexpr static int SpriteLayerIndex = 4;
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constexpr static int ColorWindowIndex = 5;
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shared_ptr<Console> _console;
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shared_ptr<InternalRegisters> _regs;
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shared_ptr<MemoryManager> _memoryManager;
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//Temporary data used for the tilemap/tile fetching
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LayerData _layerData[4];
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uint16_t _hOffset = 0;
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uint16_t _vOffset = 0;
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uint16_t _fetchBgStart = 0;
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uint16_t _fetchBgEnd = 0;
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//Temporary data used by the sprite evaluation/fetching
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SpriteInfo _currentSprite = {};
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uint8_t _oamEvaluationIndex = 0;
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uint8_t _oamTimeIndex = 0;
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uint16_t _fetchSpriteStart = 0;
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uint16_t _fetchSpriteEnd = 0;
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uint16_t _spriteEvalStart = 0;
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uint16_t _spriteEvalEnd = 0;
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bool _spriteFetchingDone = false;
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uint8_t _spriteIndexes[32] = {};
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uint8_t _spriteCount = 0;
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uint8_t _spriteTileCount = 0;
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bool _forcedVblank = false;
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uint8_t _screenBrightness = 0;
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uint16_t _scanline = 0;
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uint32_t _frameCount = 0;
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uint16_t _vblankStart;
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uint8_t _oddFrame = 0;
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uint16_t _drawStartX = 0;
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uint16_t _drawEndX = 0;
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uint8_t _bgMode = 0;
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bool _mode1Bg3Priority = false;
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uint8_t _mainScreenLayers = 0;
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uint8_t _subScreenLayers = 0;
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LayerConfig _layerConfig[4] = {};
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WindowConfig _window[2] = {};
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WindowMaskLogic _maskLogic[6] = {};
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bool _windowMaskMain[5] = {};
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bool _windowMaskSub[5] = {};
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Mode7Config _mode7 = {};
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uint16_t *_vram = nullptr;
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uint16_t _vramAddress = 0;
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uint8_t _vramIncrementValue = 0;
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uint8_t _vramAddressRemapping = 0;
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bool _vramAddrIncrementOnSecondReg = 0;
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uint16_t _vramReadBuffer = 0;
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uint8_t _ppu1OpenBus = 0;
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uint8_t _ppu2OpenBus = 0;
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uint8_t _cgramAddress = 0;
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uint8_t _cgramWriteBuffer = 0;
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bool _cgramAddressLatch = false;
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uint16_t _cgram[Ppu::CgRamSize >> 1] = {};
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uint16_t *_outputBuffers[2] = {};
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uint16_t *_currentBuffer = nullptr;
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bool _useHighResOutput = false;
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uint16_t _pixelsDrawn = 0;
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uint16_t _subPixelsDrawn = 0;
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uint8_t _rowPixelFlags[256] = {};
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uint16_t _mainScreenBuffer[256] = {};
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bool _subScreenFilled[256] = {};
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uint16_t _subScreenBuffer[256] = {};
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uint32_t _mosaicColor[4] = {};
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uint8_t _mosaicSize = 0;
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uint8_t _mosaicEnabled = 0;
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uint16_t _mosaicScanlineCounter = 0;
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uint8_t _oamMode = 0;
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uint16_t _oamBaseAddress = 0;
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uint16_t _oamAddressOffset = 0;
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uint8_t _oamRam[Ppu::SpriteRamSize] = {};
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uint16_t _oamRamAddress = 0;
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bool _enableOamPriority = false;
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uint16_t _internalOamAddress = 0;
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uint8_t _oamWriteBuffer = 0;
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bool _timeOver = false;
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bool _rangeOver = false;
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bool _hiResMode = false;
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bool _screenInterlace = false;
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bool _objInterlace = false;
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bool _overscanMode = false;
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bool _directColorMode = false;
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ColorWindowMode _colorMathClipMode = ColorWindowMode::Never;
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ColorWindowMode _colorMathPreventMode = ColorWindowMode::Never;
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bool _colorMathAddSubscreen = false;
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uint8_t _colorMathEnabled = 0;
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bool _colorMathSubstractMode = false;
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bool _colorMathHalveResult = false;
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uint16_t _fixedColor = 0;
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uint8_t _hvScrollLatchValue = 0;
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uint8_t _hScrollLatchValue = 0;
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uint16_t _horizontalLocation = 0;
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bool _horizontalLocToggle = false;
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uint16_t _verticalLocation = 0;
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bool _verticalLocationToggle = false;
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bool _locationLatched = false;
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Timer _frameSkipTimer;
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bool _skipRender = false;
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uint8_t _configVisibleLayers = 0xFF;
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uint8_t _spritePriority[256] = {};
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uint8_t _spritePalette[256] = {};
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uint8_t _spriteColors[256] = {};
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uint8_t _spritePriorityCopy[256] = {};
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uint8_t _spritePaletteCopy[256] = {};
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uint8_t _spriteColorsCopy[256] = {};
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template<uint8_t priority, bool forMainScreen>
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void RenderSprites();
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template<bool hiResMode>
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void GetTilemapData(uint8_t layerIndex, uint8_t columnIndex);
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template<bool hiResMode, uint8_t bpp, bool secondTile = false>
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void GetChrData(uint8_t layerIndex, uint8_t column, uint8_t plane);
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void GetHorizontalOffsetByte(uint8_t columnIndex);
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void GetVerticalOffsetByte(uint8_t columnIndex);
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void FetchTileData();
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template<bool forMainScreen> void RenderMode0();
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template<bool forMainScreen> void RenderMode1();
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template<bool forMainScreen> void RenderMode2();
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template<bool forMainScreen> void RenderMode3();
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template<bool forMainScreen> void RenderMode4();
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template<bool forMainScreen> void RenderMode5();
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template<bool forMainScreen> void RenderMode6();
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template<bool forMainScreen> void RenderMode7();
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template<bool forMainScreen>
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void RenderBgColor();
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template<uint8_t layerIndex, uint8_t bpp, bool processHighPriority, bool forMainScreen, uint16_t basePaletteOffset = 0>
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__forceinline void RenderTilemap();
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template<uint8_t layerIndex, uint8_t bpp, bool processHighPriority, bool forMainScreen, uint16_t basePaletteOffset, bool hiResMode>
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__forceinline void RenderTilemap();
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template<uint8_t layerIndex, uint8_t bpp, bool processHighPriority, bool forMainScreen, uint16_t basePaletteOffset, bool hiResMode, uint8_t activeWindowCount>
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__forceinline void RenderTilemap();
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template<uint8_t layerIndex, uint8_t bpp, bool processHighPriority, bool forMainScreen, uint16_t basePaletteOffset, bool hiResMode, uint8_t activeWindowCount, bool applyMosaic>
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__forceinline void RenderTilemap();
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template<uint8_t layerIndex, uint8_t bpp, bool processHighPriority, bool forMainScreen, uint16_t basePaletteOffset, bool hiResMode, uint8_t activeWindowCount, bool applyMosaic, bool directColorMode>
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void RenderTilemap();
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template<bool forMainScreen>
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__forceinline bool IsRenderRequired(uint8_t layerIndex);
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template<uint8_t bpp>
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__forceinline uint8_t GetTilePixelColor(const uint16_t chrData[4], const uint8_t shift);
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template<uint8_t layerIndex, bool forMainScreen, bool processHighPriority>
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__forceinline void RenderTilemapMode7();
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template<uint8_t layerIndex, bool forMainScreen, bool processHighPriority, bool applyMosaic>
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__forceinline void RenderTilemapMode7();
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template<uint8_t layerIndex, bool forMainScreen, bool processHighPriority, bool applyMosaic, bool directColorMode>
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void RenderTilemapMode7();
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__forceinline void DrawMainPixel(uint8_t x, uint16_t color, uint8_t flags);
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__forceinline void DrawSubPixel(uint8_t x, uint16_t color);
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void ApplyColorMath();
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void ApplyColorMathToPixel(uint16_t &pixelA, uint16_t pixelB, int x, bool isInsideWindow);
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template<bool forMainScreen>
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void ApplyBrightness();
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void ConvertToHiRes();
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void ApplyHiResMode();
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template<uint8_t layerIndex>
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bool ProcessMaskWindow(uint8_t activeWindowCount, int x);
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void ProcessWindowMaskSettings(uint8_t value, uint8_t offset);
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void UpdateVramReadBuffer();
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uint16_t GetVramAddress();
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void SendFrame();
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bool IsDoubleHeight();
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bool IsDoubleWidth();
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public:
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Ppu(shared_ptr<Console> console);
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virtual ~Ppu();
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void PowerOn();
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void Reset();
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void EvaluateNextLineSprites();
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void FetchSpriteData();
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void FetchSpritePosition(uint16_t oamAddress);
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void FetchSpriteAttributes(uint16_t oamAddress);
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void FetchSpriteTile(bool secondCycle);
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void RenderScanline();
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uint32_t GetFrameCount();
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uint16_t GetScanline();
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uint16_t GetCycle();
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uint16_t GetVblankStart();
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PpuState GetState();
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bool ProcessEndOfScanline(uint16_t hClock);
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uint16_t GetLastScanline();
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bool IsHighResOutput();
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uint16_t* GetScreenBuffer();
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uint8_t* GetVideoRam();
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uint8_t* GetCgRam();
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uint8_t* GetSpriteRam();
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void LatchLocationValues();
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void UpdateOamAddress();
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uint16_t GetOamAddress();
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uint8_t Read(uint16_t addr);
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void Write(uint32_t addr, uint8_t value);
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void Serialize(Serializer &s) override;
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}; |