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/*
* Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
*
* (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and
* Jerremy Koot (jkoot@snes9x.com)
*
* Super FX C emulator code
* (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and
* Gary Henderson.
* Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_.
*
* DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson.
* C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_.
* C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com).
*
* DOS port code contains the works of other authors. See headers in
* individual files.
*
* Snes9x homepage: http://www.snes9x.com
*
* Permission to use, copy, modify and distribute Snes9x in both binary and
* source form, for non-commercial purposes, is hereby granted without fee,
* providing that this license information and copyright notice appear with
* all copies and any derived work.
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event shall the authors be held liable for any damages
* arising from the use of this software.
*
* Snes9x is freeware for PERSONAL USE only. Commercial users should
* seek permission of the copyright holders first. Commercial use includes
* charging money for Snes9x or software derived from Snes9x.
*
* The copyright holders request that bug fixes and improvements to the code
* should be forwarded to them so everyone can benefit from the modifications
* in future versions.
*
* Super NES and Super Nintendo Entertainment System are trademarks of
* Nintendo Co., Limited and its subsidiary companies.
*/
#ifndef _GFX_H_
#define _GFX_H_
#include "port.h"
#include "ppu.h"
#define GFX_PIXSIZE 1
#define GFX_PITCH 640
#define GFX_ZPITCH 320
#define GFX_PPL 320
typedef struct
{
// Initialize these variables
uint8* Screen_buffer;
uint8* ZBuffer_buffer;
uint8* SubZBuffer_buffer;
uint8* Screen;
uint8* SubScreen;
uint8* ZBuffer;
uint8* SubZBuffer;
uint32 Pitch;
// Setup in call to S9xGraphicsInit()
int Delta;
#if defined(USE_OLD_COLOUR_OPS)
/* Pre-1.60 colour operations */
uint16* X2;
uint16* ZERO_OR_X2;
#endif
uint16* ZERO;
uint8* S;
uint8* DB;
uint32* ScreenColors;
uint32* ScreenColorsPre;
uint32 PaletteMask;
uint32 PaletteShift;
intptr_t DepthDelta;
uint8 Z1;
uint8 Z2;
uint32 FixedColour;
uint32 StartY;
uint32 EndY;
ClipData* pCurrentClip;
uint32 Mode7Mask;
uint32 Mode7PriorityMask;
uint8 r212c;
uint8 r212c_s;
uint8 r212d;
uint8 r212d_s;
uint8 r212e_s;
uint8 r212f_s;
uint8 r2130;
uint8 r2130_s;
uint8 r2131;
uint8 r2131_s;
bool8 Pseudo;
int OBJList [129];
uint32 Sizes [129];
int VPositions [129];
#ifdef GFX_MULTI_FORMAT
uint32 PixelFormat;
uint32(*BuildPixel)(uint32 R, uint32 G, uint32 B);
uint32(*BuildPixel2)(uint32 R, uint32 G, uint32 B);
void (*DecomposePixel)(uint32 Pixel, uint32 &R, uint32 &G, uint32 &B);
#endif
} SGFX;
typedef struct
{
struct
{
uint16 VOffset;
uint16 HOffset;
} BG [4];
} SLineData;
#define H_FLIP 0x4000
#define V_FLIP 0x8000
#define BLANK_TILE 2
typedef struct
{
uint32 TileSize;
uint32 BitShift;
uint32 TileShift;
uint32 TileAddress;
uint32 NameSelect;
uint32 SCBase;
uint32 StartPalette;
uint32 PaletteShift;
uint32 PaletteMask;
uint8* Buffer;
uint8* Buffered;
bool8 DirectColourMode;
} SBG;
typedef struct
{
short MatrixA;
short MatrixB;
short MatrixC;
short MatrixD;
short CentreX;
short CentreY;
} SLineMatrixData;
extern uint32_t odd_high [4][16];
extern uint32_t odd_low [4][16];
extern uint32_t even_high [4][16];
extern uint32_t even_low [4][16];
extern SBG BG;
extern uint32 DirectColourMaps [8][256];
//extern uint8 add32_32 [32][32];
//extern uint8 add32_32_half [32][32];
//extern uint8 sub32_32 [32][32];
//extern uint8 sub32_32_half [32][32];
extern uint8 mul_brightness [16][32];
// Could use BSWAP instruction on Intel port...
//#define SWAP_DWORD(dw) dw = ((dw & 0xff) << 24) | ((dw & 0xff00) << 8) | \
// ((dw & 0xff0000) >> 8) | ((dw & 0xff000000) >> 24)
// by Harald Kipp, from http://www.ethernut.de/en/documents/arm-inline-asm.html
#ifdef ARM_ASM
#define SWAP_DWORD(val) \
__asm__ __volatile__ ( \
"eor r3, %1, %1, ror #16\n\t" \
"bic r3, r3, #0x00FF0000\n\t" \
"mov %0, %1, ror #8\n\t" \
"eor %0, %0, r3, lsr #8" \
: "=r" (val) \
: "0"(val) \
: "r3", "cc" \
);
#else
#define SWAP_DWORD(dword) ((((unsigned int)(dword) & 0x000000ff) << 24) \
| (((unsigned int)(dword) & 0x0000ff00) << 8) \
| (((unsigned int)(dword) & 0x00ff0000) >> 8) \
| (((unsigned int)(dword) & 0xff000000) >> 24))
#endif
#ifdef FAST_LSB_WORD_ACCESS
#define READ_2BYTES(s) (*(uint16 *) (s))
#define WRITE_2BYTES(s, d) *(uint16 *) (s) = (d)
#else
#ifdef MSB_FIRST
#define READ_2BYTES(s) (*(uint8 *) (s) | (*((uint8 *) (s) + 1) << 8))
#define WRITE_2BYTES(s, d) *(uint8 *) (s) = (d), \
*((uint8 *) (s) + 1) = (d) >> 8
#else
#define READ_2BYTES(s) (*(uint16 *) (s))
#define WRITE_2BYTES(s, d) *(uint16 *) (s) = (d)
#endif
#endif // i386
#define SUB_SCREEN_DEPTH 0
#define MAIN_SCREEN_DEPTH 32
#if defined(USE_OLD_COLOUR_OPS)
/* Pre-1.60 colour operations */
#if defined(OLD_COLOUR_BLENDING)
#define COLOR_ADD(C1, C2) \
GFX.X2 [((((C1) & RGB_REMOVE_LOW_BITS_MASK) + \
((C2) & RGB_REMOVE_LOW_BITS_MASK)) >> 1) + \
((C1) & (C2) & RGB_LOW_BITS_MASK)]
#else
#define COLOR_ADD(C1, C2) \
(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))
#endif
#else
static INLINE uint16_t COLOR_ADD(uint16_t C1, uint16_t C2)
{
const int RED_MASK = 0x1F << RED_SHIFT_BITS;
const int GREEN_MASK = 0x1F << GREEN_SHIFT_BITS;
const int BLUE_MASK = 0x1F << BLUE_SHIFT_BITS;
int rb = (C1 & (RED_MASK | BLUE_MASK)) + (C2 & (RED_MASK | BLUE_MASK));
int rbcarry = rb & ((0x20 << RED_SHIFT_BITS) | (0x20 << 0));
int g = (C1 & (GREEN_MASK)) + (C2 & (GREEN_MASK));
int rgbsaturate = (((g & (0x20 << GREEN_SHIFT_BITS)) | rbcarry) >> 5) * 0x1f;
uint16_t retval = (rb & (RED_MASK | BLUE_MASK)) | (g & GREEN_MASK) | rgbsaturate;
#if GREEN_SHIFT_BITS == 6
retval |= (retval & 0x0400) >> 5;
#endif
return retval;
}
#endif
#define COLOR_ADD1_2(C1, C2) \
(((((C1) & RGB_REMOVE_LOW_BITS_MASK) + \
((C2) & RGB_REMOVE_LOW_BITS_MASK)) >> 1) + \
((C1) & (C2) & RGB_LOW_BITS_MASK) | ALPHA_BITS_MASK)
#if defined(USE_OLD_COLOUR_OPS)
/* Pre-1.60 colour operations */
#if defined(OLD_COLOUR_BLENDING)
#define COLOR_SUB(C1, C2) \
GFX.ZERO_OR_X2 [(((C1) | RGB_HI_BITS_MASKx2) - \
((C2) & RGB_REMOVE_LOW_BITS_MASK)) >> 1]
#else
#define COLOR_SUB(C1, C2) \
(GFX.ZERO_OR_X2 [(((C1) | RGB_HI_BITS_MASKx2) - \
((C2) & RGB_REMOVE_LOW_BITS_MASK)) >> 1] + \
((C1) & RGB_LOW_BITS_MASK) - ((C2) & RGB_LOW_BITS_MASK))
#endif
#else
static INLINE uint16_t COLOR_SUB(uint16_t C1, uint16_t C2)
{
int rb1 = (C1 & (THIRD_COLOR_MASK | FIRST_COLOR_MASK)) | ((0x20 << 0) | (0x20 << RED_SHIFT_BITS));
int rb2 = C2 & (THIRD_COLOR_MASK | FIRST_COLOR_MASK);
int rb = rb1 - rb2;
int rbcarry = rb & ((0x20 << RED_SHIFT_BITS) | (0x20 << 0));
int g = ((C1 & (SECOND_COLOR_MASK)) | (0x20 << GREEN_SHIFT_BITS)) - (C2 & (SECOND_COLOR_MASK));
int rgbsaturate = (((g & (0x20 << GREEN_SHIFT_BITS)) | rbcarry) >> 5) * 0x1f;
uint16_t retval = ((rb & (THIRD_COLOR_MASK | FIRST_COLOR_MASK)) | (g & SECOND_COLOR_MASK)) & rgbsaturate;
#if GREEN_SHIFT_BITS == 6
retval |= (retval & 0x0400) >> 5;
#endif
return retval;
}
#endif
#define COLOR_SUB1_2(C1, C2) \
GFX.ZERO [(((C1) | RGB_HI_BITS_MASKx2) - \
((C2) & RGB_REMOVE_LOW_BITS_MASK)) >> 1]
typedef void (*NormalTileRenderer)(uint32 Tile, int32 Offset,
uint32 StartLine, uint32 LineCount);
typedef void (*ClippedTileRenderer)(uint32 Tile, int32 Offset,
uint32 StartPixel, uint32 Width,
uint32 StartLine, uint32 LineCount);
typedef void (*LargePixelRenderer)(uint32 Tile, int32 Offset,
uint32 StartPixel, uint32 Pixels,
uint32 StartLine, uint32 LineCount);
typedef struct
{
NormalTileRenderer Normal;
ClippedTileRenderer Clipped;
LargePixelRenderer Large;
} TileRendererSet;
void S9xStartScreenRefresh();
void S9xDrawScanLine(uint8 Line);
void S9xEndScreenRefresh();
void S9xSetupOBJ();
void S9xUpdateScreen();
//extern void (*S9xUpdateScreen)();
//void SelectUpdateScreen();
void RenderLine(uint8 line);
void S9xBuildDirectColourMaps();
// External port interface which must be implemented or initialised for each
// port.
extern SGFX GFX;
bool8_32 S9xGraphicsInit();
void S9xGraphicsDeinit();
bool8_32 S9xInitUpdate(void);
bool8_32 S9xDeinitUpdate(int Width, int Height, bool8_32 sixteen_bit);
void S9xSetPalette();
void S9xSyncSpeed();
#ifdef GFX_MULTI_FORMAT
bool8_32 S9xSetRenderPixelFormat(int format);
#endif
#endif
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