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bbc1087888
When entering Wario's castle, the game frequently crashed in GBC mode. This was caused by the different timing for the rendering idle cycles - making the GBC timing identical to the GB fixed the crash (and other minor adjustments fixed the couple of GBC test roms that broke as a result)
155 lines
3.9 KiB
C++
155 lines
3.9 KiB
C++
#pragma once
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#include "pch.h"
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#include "Gameboy/GbTypes.h"
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#include "Utilities/ISerializable.h"
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class Emulator;
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class Gameboy;
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class GbMemoryManager;
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class GbDmaController;
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class GbPpu : public ISerializable
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{
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private:
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Emulator* _emu = nullptr;
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Gameboy* _gameboy = nullptr;
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GbPpuState _state = {};
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GbMemoryManager* _memoryManager = nullptr;
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GbDmaController* _dmaController = nullptr;
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uint16_t* _outputBuffers[2] = {};
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uint16_t* _currentBuffer = nullptr;
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uint16_t* _eventViewerBuffers[2] = {};
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uint16_t* _currentEventViewerBuffer = nullptr;
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EvtColor _evtColor = EvtColor::HBlank;
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int16_t _prevDrawnPixels = 0;
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uint8_t* _vram = nullptr;
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uint8_t* _oam = nullptr;
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uint64_t _lastFrameTime = 0;
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GbPpuFifo _bgFifo;
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GbPpuFetcher _bgFetcher;
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GbPpuFifo _oamFifo;
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GbPpuFetcher _oamFetcher;
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int16_t _drawnPixels = 0;
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uint8_t _fetchColumn = 0;
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bool _fetchWindow = false;
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int16_t _windowCounter = -1;
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bool _wyEnableFlag = false;
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bool _wxEnableFlag = false;
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bool _insertGlitchBgPixel = false;
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int16_t _fetchSprite = -1;
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uint8_t _spriteCount = 0;
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uint8_t _spriteX[10] = {};
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uint8_t _spriteY[10] = {};
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uint8_t _spriteIndexes[10] = {};
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uint8_t _oamReadBuffer[2] = {};
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bool _lcdDisabled = true;
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bool _stopOamBlocked = false;
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bool _stopVramBlocked = false;
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bool _stopPaletteBlocked = false;
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bool _oamReadBlocked = false;
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bool _oamWriteBlocked = false;
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bool _vramReadBlocked = false;
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bool _vramWriteBlocked = false;
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bool _isFirstFrame = true;
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bool _forceBlankFrame = true;
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bool _rendererIdle = false;
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uint8_t _tileIndex = 0;
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uint8_t _gbcTileGlitch = 0;
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GbPixelType _lastPixelType = {};
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uint8_t _lastBgColor = 0;
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__forceinline void WriteBgPixel(uint8_t colorIndex);
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__forceinline void WriteObjPixel(uint8_t colorIndex);
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__forceinline void ProcessPpuCycle();
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__forceinline void ExecCycle();
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__forceinline void ProcessVblankScanline();
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void ProcessFirstScanlineAfterPowerOn();
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__forceinline void ProcessVisibleScanline();
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__forceinline void RunDrawCycle();
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__forceinline void RunSpriteEvaluation();
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void ResetRenderer();
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void ClockSpriteFetcher();
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void FindNextSprite();
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__forceinline void ClockTileFetcher();
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__forceinline void PushSpriteToPixelFifo();
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__forceinline void PushTileToPixelFifo();
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void UpdateStatIrq();
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__forceinline uint8_t LcdReadOam(uint8_t addr);
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__forceinline uint8_t LcdReadVram(uint16_t addr);
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__forceinline uint16_t LcdReadBgPalette(uint8_t addr);
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__forceinline uint16_t LcdReadObjPalette(uint8_t addr);
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void SendFrame();
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void UpdatePalette();
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uint8_t ReadCgbPalette(uint8_t& pos, uint16_t* pal);
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void WriteCgbPalette(uint8_t& pos, uint16_t* pal, bool autoInc, uint8_t value);
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public:
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virtual ~GbPpu();
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void Init(Emulator* emu, Gameboy* gameboy, GbMemoryManager* memoryManager, GbDmaController* dmaController, uint8_t* vram, uint8_t* oam);
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GbPpuState GetState();
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GbPpuState& GetStateRef();
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uint16_t* GetOutputBuffer();
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uint16_t* GetEventViewerBuffer();
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uint16_t* GetPreviousEventViewerBuffer();
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void SetCpuStopState(bool stopped);
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uint32_t GetFrameCount();
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uint8_t GetScanline();
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uint16_t GetCycle();
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bool IsLcdEnabled();
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bool IsCgbEnabled();
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PpuMode GetMode();
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template<bool singleStep>
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void Exec();
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uint8_t Read(uint16_t addr);
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void Write(uint16_t addr, uint8_t value);
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void SetTileFetchGlitchState();
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bool IsVramReadAllowed();
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bool IsVramWriteAllowed();
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uint8_t ReadVram(uint16_t addr);
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uint8_t PeekVram(uint16_t addr);
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void WriteVram(uint16_t addr, uint8_t value);
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bool IsOamReadAllowed();
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bool IsOamWriteAllowed();
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uint8_t ReadOam(uint8_t addr);
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uint8_t PeekOam(uint8_t addr);
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void WriteOam(uint8_t addr, uint8_t value, bool forDma);
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template<GbOamCorruptionType oamCorruptionType>
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void ProcessOamCorruption(uint16_t addr);
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void ProcessOamIncDecCorruption(int row);
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uint8_t ReadCgbRegister(uint16_t addr);
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void WriteCgbRegister(uint16_t addr, uint8_t value);
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void DebugSendFrame();
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void Serialize(Serializer& s) override;
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};
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