/* Copyright 2016-2020 Arisotura This file is part of melonDS. melonDS is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. melonDS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with melonDS. If not, see http://www.gnu.org/licenses/. */ #ifndef GPU2D_H #define GPU2D_H class GPU2D { public: GPU2D(u32 num); ~GPU2D(); void Reset(); void DoSavestate(Savestate* file); void SetEnabled(bool enable) { Enabled = enable; } void SetFramebuffer(u32* buf); void SetRenderSettings(bool accel); u8 Read8(u32 addr); u16 Read16(u32 addr); u32 Read32(u32 addr); void Write8(u32 addr, u8 val); void Write16(u32 addr, u16 val); void Write32(u32 addr, u32 val); bool UsesFIFO() { if (((DispCnt >> 16) & 0x3) == 3) return true; if ((CaptureCnt & (1<<25)) && ((CaptureCnt >> 29) & 0x3) != 0) return true; return false; } void SampleFIFO(u32 offset, u32 num); void DrawScanline(u32 line); void DrawSprites(u32 line); void VBlank(); void VBlankEnd(); void CheckWindows(u32 line); void BGExtPalDirty(u32 base); void OBJExtPalDirty(); u16* GetBGExtPal(u32 slot, u32 pal); u16* GetOBJExtPal(); private: u32 Num; bool Enabled; u32* Framebuffer; bool Accelerated; u32 BGOBJLine[256*3] __attribute__((aligned (8))); u32* _3DLine; u8 WindowMask[256] __attribute__((aligned (8))); u32 OBJLine[256] __attribute__((aligned (8))); u8 OBJWindow[256] __attribute__((aligned (8))); u8 OBJIndex[256] __attribute__((aligned (8))); u32 NumSprites; u16 DispFIFO[16]; u32 DispFIFOReadPtr; u32 DispFIFOWritePtr; u16 DispFIFOBuffer[256]; u32 DispCnt; u16 BGCnt[4]; u16 BGXPos[4]; u16 BGYPos[4]; s32 BGXRef[2]; s32 BGYRef[2]; s32 BGXRefInternal[2]; s32 BGYRefInternal[2]; s16 BGRotA[2]; s16 BGRotB[2]; s16 BGRotC[2]; s16 BGRotD[2]; u8 Win0Coords[4]; u8 Win1Coords[4]; u8 WinCnt[4]; u32 Win0Active; u32 Win1Active; u8 BGMosaicSize[2]; u8 OBJMosaicSize[2]; u8 BGMosaicY, BGMosaicYMax; u8 OBJMosaicYCount, OBJMosaicY, OBJMosaicYMax; u8 MosaicTable[16][256]; u8* CurBGXMosaicTable; u8* CurOBJXMosaicTable; u16 BlendCnt; u16 BlendAlpha; u8 EVA, EVB; u8 EVY; u32 CaptureCnt; u16 MasterBrightness; u16 BGExtPalCache[4][16*256]; u16 OBJExtPalCache[16*256]; u32 BGExtPalStatus[4]; u32 OBJExtPalStatus; u32 ColorBlend4(u32 val1, u32 val2, u32 eva, u32 evb); u32 ColorBlend5(u32 val1, u32 val2); u32 ColorBrightnessUp(u32 val, u32 factor); u32 ColorBrightnessDown(u32 val, u32 factor); u32 ColorComposite(int i, u32 val1, u32 val2); void UpdateMosaicCounters(u32 line); template<u32 bgmode> void DrawScanlineBGMode(u32 line); void DrawScanlineBGMode6(u32 line); void DrawScanlineBGMode7(u32 line); void DrawScanline_BGOBJ(u32 line); static void DrawPixel_Normal(u32* dst, u16 color, u32 flag); static void DrawPixel_Accel(u32* dst, u16 color, u32 flag); void (*DrawPixel)(u32* dst, u16 color, u32 flag); void DrawBG_3D(); template<bool mosaic> void DrawBG_Text(u32 line, u32 bgnum); template<bool mosaic> void DrawBG_Affine(u32 line, u32 bgnum); template<bool mosaic> void DrawBG_Extended(u32 line, u32 bgnum); template<bool mosaic> void DrawBG_Large(u32 line); void ApplySpriteMosaicX(); void InterleaveSprites(u32 prio); template<bool window> void DrawSprite_Rotscale(u32 num, u32 boundwidth, u32 boundheight, u32 width, u32 height, s32 xpos, s32 ypos); template<bool window> void DrawSprite_Normal(u32 num, u32 width, u32 height, s32 xpos, s32 ypos); void DoCapture(u32 line, u32 width); void CalculateWindowMask(u32 line); }; #endif