mirror of
https://github.com/ShadauxCat/CATSFC.git
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736484548e
See the video for this bug at <http://www.youtube.com/watch?v=sUWjVxAD9Q8>.
324 lines
9.4 KiB
C
324 lines
9.4 KiB
C
/*******************************************************************************
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Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
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(c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and
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Jerremy Koot (jkoot@snes9x.com)
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(c) Copyright 2001 - 2004 John Weidman (jweidman@slip.net)
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(c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net),
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funkyass (funkyass@spam.shaw.ca),
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Joel Yliluoma (http://iki.fi/bisqwit/)
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Kris Bleakley (codeviolation@hotmail.com),
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Matthew Kendora,
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Nach (n-a-c-h@users.sourceforge.net),
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Peter Bortas (peter@bortas.org) and
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zones (kasumitokoduck@yahoo.com)
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C4 x86 assembler and some C emulation code
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(c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com),
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_Demo_ (_demo_@zsnes.com), and Nach
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C4 C++ code
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(c) Copyright 2003 Brad Jorsch
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DSP-1 emulator code
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(c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson,
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John Weidman, neviksti (neviksti@hotmail.com),
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Kris Bleakley, Andreas Naive
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DSP-2 emulator code
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(c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and
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Lord Nightmare (lord_nightmare@users.sourceforge.net
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OBC1 emulator code
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(c) Copyright 2001 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and
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Kris Bleakley
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Ported from x86 assembler to C by sanmaiwashi
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SPC7110 and RTC C++ emulator code
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(c) Copyright 2002 Matthew Kendora with research by
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zsKnight, John Weidman, and Dark Force
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S-DD1 C emulator code
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(c) Copyright 2003 Brad Jorsch with research by
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Andreas Naive and John Weidman
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S-RTC C emulator code
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(c) Copyright 2001 John Weidman
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ST010 C++ emulator code
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(c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora
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Super FX x86 assembler emulator code
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(c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault
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Super FX C emulator code
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(c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman
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SH assembler code partly based on x86 assembler code
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(c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
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Specific ports contains the works of other authors. See headers in
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individual files.
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Snes9x homepage: http://www.snes9x.com
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Permission to use, copy, modify and distribute Snes9x in both binary and
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source form, for non-commercial purposes, is hereby granted without fee,
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providing that this license information and copyright notice appear with
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all copies and any derived work.
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This software is provided 'as-is', without any express or implied
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warranty. In no event shall the authors be held liable for any damages
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arising from the use of this software.
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Snes9x is freeware for PERSONAL USE only. Commercial users should
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seek permission of the copyright holders first. Commercial use includes
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charging money for Snes9x or software derived from Snes9x.
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The copyright holders request that bug fixes and improvements to the code
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should be forwarded to them so everyone can benefit from the modifications
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in future versions.
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Super NES and Super Nintendo Entertainment System are trademarks of
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Nintendo Co., Limited and its subsidiary companies.
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*******************************************************************************/
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#ifndef _GFX_H_
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#define _GFX_H_
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#include "port.h"
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#include "snes9x.h"
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START_EXTERN_C
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void S9xStartScreenRefresh ();
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void S9xDrawScanLine (uint8 Line);
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void S9xEndScreenRefresh ();
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void S9xSetupOBJ ();
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void S9xUpdateScreen ();
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void RenderLine (uint8 line);
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void S9xBuildDirectColourMaps ();
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// External port interface which must be implemented or initialised for each
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// port.
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extern struct SGFX GFX;
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bool8 S9xGraphicsInit ();
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void S9xGraphicsDeinit();
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bool8 S9xInitUpdate (void);
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bool8 S9xDeinitUpdate (int Width, int Height, bool8 sixteen_bit);
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void S9xSyncSpeed ();
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#ifdef GFX_MULTI_FORMAT
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bool8 S9xSetRenderPixelFormat (int format);
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#endif
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END_EXTERN_C
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struct SGFX{
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// Initialize these variables
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uint8 *Screen;
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uint8 *SubScreen;
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uint8 *ZBuffer;
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uint8 *SubZBuffer;
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uint32 Pitch;
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// Setup in call to S9xGraphicsInit()
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int Delta;
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uint16 *X2;
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uint16 *ZERO_OR_X2;
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uint16 *ZERO;
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uint32 RealPitch; // True pitch of Screen buffer.
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uint32 Pitch2; // Same as RealPitch except while using speed up hack for Glide.
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uint32 ZPitch; // Pitch of ZBuffer
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uint32 PPL; // Number of pixels on each of Screen buffer
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uint32 PPLx2;
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uint32 PixSize;
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uint8 *S;
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uint8 *DB;
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uint32 DepthDelta;
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uint8 Z1; // Depth for comparison
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uint8 Z2; // Depth to save
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uint8 ZSprite; // Used to ensure only 1st sprite is drawn per pixel
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uint32 FixedColour;
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const char *InfoString;
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uint32 InfoStringTimeout;
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uint32 StartY;
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uint32 EndY;
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struct ClipData *pCurrentClip;
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uint32 Mode7Mask;
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uint32 Mode7PriorityMask;
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uint8 OBJWidths[128];
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uint8 OBJVisibleTiles[128];
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struct {
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uint8 RTOFlags;
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int16 Tiles;
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struct {
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int8 Sprite;
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uint8 Line;
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} OBJ[32];
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} OBJLines [SNES_HEIGHT_EXTENDED];
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uint8 r212c;
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uint8 r212d;
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uint8 r2130;
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uint8 r2131;
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bool8 Pseudo;
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#ifdef GFX_MULTI_FORMAT
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uint32 PixelFormat;
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uint32 (*BuildPixel) (uint32 R, uint32 G, uint32 B);
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uint32 (*BuildPixel2) (uint32 R, uint32 G, uint32 B);
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void (*DecomposePixel) (uint32 Pixel, uint32 &R, uint32 &G, uint32 &B);
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#endif
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};
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struct SLineData {
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struct {
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uint16 VOffset;
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uint16 HOffset;
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} BG [4];
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};
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#define H_FLIP 0x4000
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#define V_FLIP 0x8000
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#define BLANK_TILE 2
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struct SBG
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{
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uint32 TileSize;
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uint32 BitShift;
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uint32 TileShift;
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uint32 TileAddress;
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uint32 NameSelect;
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uint32 SCBase;
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uint32 StartPalette;
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uint32 PaletteShift;
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uint32 PaletteMask;
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uint8 *Buffer;
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uint8 *Buffered;
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bool8 DirectColourMode;
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};
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struct SLineMatrixData
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{
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short MatrixA;
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short MatrixB;
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short MatrixC;
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short MatrixD;
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short CentreX;
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short CentreY;
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};
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extern uint32 odd_high [4][16];
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extern uint32 odd_low [4][16];
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extern uint32 even_high [4][16];
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extern uint32 even_low [4][16];
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extern SBG BG;
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extern uint16 DirectColourMaps [8][256];
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extern uint8 add32_32 [32][32];
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extern uint8 add32_32_half [32][32];
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extern uint8 sub32_32 [32][32];
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extern uint8 sub32_32_half [32][32];
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extern uint8 mul_brightness [16][32];
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// Could use BSWAP instruction on Intel port...
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#define SWAP_DWORD(dw) dw = ((dw & 0xff) << 24) | ((dw & 0xff00) << 8) | \
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((dw & 0xff0000) >> 8) | ((dw & 0xff000000) >> 24)
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#ifdef FAST_LSB_WORD_ACCESS
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#define READ_2BYTES(s) (*(uint16 *) (s))
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#define WRITE_2BYTES(s, d) *(uint16 *) (s) = (d)
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#else
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#ifdef LSB_FIRST
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#define READ_2BYTES(s) (*(uint8 *) (s) | (*((uint8 *) (s) + 1) << 8))
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#define WRITE_2BYTES(s, d) *(uint8 *) (s) = (d), \
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*((uint8 *) (s) + 1) = (d) >> 8
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#else // else MSB_FISRT
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#define READ_2BYTES(s) (*(uint8 *) (s) | (*((uint8 *) (s) + 1) << 8))
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#define WRITE_2BYTES(s, d) *(uint8 *) (s) = (d), \
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*((uint8 *) (s) + 1) = (d) >> 8
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#endif // LSB_FIRST
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#endif // i386
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#define SUB_SCREEN_DEPTH 0
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#define MAIN_SCREEN_DEPTH 32
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#if defined(OLD_COLOUR_BLENDING)
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#define COLOR_ADD(C1, C2) \
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GFX.X2 [((((C1) & RGB_REMOVE_LOW_BITS_MASK) + \
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((C2) & RGB_REMOVE_LOW_BITS_MASK)) >> 1) + \
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((C1) & (C2) & RGB_LOW_BITS_MASK)]
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#else
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inline uint16 COLOR_ADD (uint16, uint16);
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inline uint16 COLOR_ADD (uint16 C1, uint16 C2)
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{
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if (C1 == 0)
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return C2;
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else if (C2 == 0)
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return C1;
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else
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return GFX.X2 [(((C1 & RGB_REMOVE_LOW_BITS_MASK) + (C2 & RGB_REMOVE_LOW_BITS_MASK)) >> 1) + (C1 & C2 & RGB_LOW_BITS_MASK)] | ((C1 ^ C2) & RGB_LOW_BITS_MASK);
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}
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#endif
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#define COLOR_ADD1_2(C1, C2) \
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(((((C1) & RGB_REMOVE_LOW_BITS_MASK) + \
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((C2) & RGB_REMOVE_LOW_BITS_MASK)) >> 1) + \
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((C1) & (C2) & RGB_LOW_BITS_MASK) | ALPHA_BITS_MASK)
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#if defined(OLD_COLOUR_BLENDING)
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#define COLOR_SUB(C1, C2) \
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GFX.ZERO_OR_X2 [(((C1) | RGB_HI_BITS_MASKx2) - \
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((C2) & RGB_REMOVE_LOW_BITS_MASK)) >> 1]
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#elif !defined(NEW_COLOUR_BLENDING)
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#define COLOR_SUB(C1, C2) \
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(GFX.ZERO_OR_X2 [(((C1) | RGB_HI_BITS_MASKx2) - \
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((C2) & RGB_REMOVE_LOW_BITS_MASK)) >> 1] + \
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((C1) & RGB_LOW_BITS_MASK) - ((C2) & RGB_LOW_BITS_MASK))
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#else
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inline uint16 COLOR_SUB(uint16, uint16);
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inline uint16 COLOR_SUB(uint16 C1, uint16 C2)
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{
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uint16 mC1, mC2, v = 0;
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mC1 = C1 & FIRST_COLOR_MASK;
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mC2 = C2 & FIRST_COLOR_MASK;
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if (mC1 > mC2) v += (mC1 - mC2);
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mC1 = C1 & SECOND_COLOR_MASK;
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mC2 = C2 & SECOND_COLOR_MASK;
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if (mC1 > mC2) v += (mC1 - mC2);
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mC1 = C1 & THIRD_COLOR_MASK;
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mC2 = C2 & THIRD_COLOR_MASK;
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if (mC1 > mC2) v += (mC1 - mC2);
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return v;
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}
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#endif
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#define COLOR_SUB1_2(C1, C2) \
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GFX.ZERO [(((C1) | RGB_HI_BITS_MASKx2) - \
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((C2) & RGB_REMOVE_LOW_BITS_MASK)) >> 1]
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typedef void (*NormalTileRenderer) (uint32 Tile, uint32 Offset,
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uint32 StartLine, uint32 LineCount);
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typedef void (*ClippedTileRenderer) (uint32 Tile, uint32 Offset,
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uint32 StartPixel, uint32 Width,
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uint32 StartLine, uint32 LineCount);
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typedef void (*LargePixelRenderer) (uint32 Tile, uint32 Offset,
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uint32 StartPixel, uint32 Pixels,
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uint32 StartLine, uint32 LineCount);
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#endif
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