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#include "../copyright"
#ifndef _GFX_H_
#define _GFX_H_
#include "port.h"
#include "ppu.h"
#include "snes9x.h"
#include <retro_inline.h>
void S9xStartScreenRefresh(void);
void S9xDrawScanLine(uint8_t Line);
void S9xEndScreenRefresh(void);
void S9xSetupOBJ(void);
void S9xUpdateScreen(void);
void RenderLine(uint8_t line);
void S9xBuildDirectColourMaps(void);
bool S9xInitGFX(void);
void S9xDeinitGFX(void);
typedef struct
{
uint8_t* Screen_buffer;
uint8_t* SubScreen_buffer;
uint8_t* ZBuffer_buffer;
uint8_t* SubZBuffer_buffer;
uint8_t* Screen;
uint8_t* SubScreen;
uint8_t* ZBuffer;
uint8_t* SubZBuffer;
uint32_t Pitch;
int32_t Delta;
#if defined(USE_OLD_COLOUR_OPS)
/* Pre-1.60 colour operations */
uint16_t* X2;
uint16_t* ZERO_OR_X2;
#endif
uint16_t* ZERO;
uint32_t RealPitch; /* True pitch of Screen buffer. */
uint32_t Pitch2; /* Same as RealPitch except while using speed up hack for Glide. */
uint32_t ZPitch; /* Pitch of ZBuffer */
uint32_t PPL; /* Number of pixels on each of Screen buffer */
uint32_t PPLx2;
uint32_t PixSize;
uint8_t* S;
uint8_t* DB;
ptrdiff_t DepthDelta;
uint8_t Z1; /* Depth for comparison */
uint8_t Z2; /* Depth to save */
uint32_t FixedColour;
uint32_t StartY;
uint32_t EndY;
ClipData* pCurrentClip;
uint32_t Mode7Mask;
uint32_t Mode7PriorityMask;
uint8_t OBJWidths[128];
uint8_t OBJVisibleTiles[128];
struct
{
uint8_t RTOFlags;
int16_t Tiles;
struct
{
int8_t Sprite;
uint8_t Line;
} OBJ[32];
} OBJLines [SNES_HEIGHT_EXTENDED];
uint8_t r212c;
uint8_t r212d;
uint8_t r2130;
uint8_t r2131;
bool Pseudo;
} SGFX;
/* External port interface which must be implemented or initialised for each port. */
extern SGFX GFX;
typedef struct
{
struct
{
uint16_t VOffset;
uint16_t HOffset;
} BG [4];
} SLineData;
#define H_FLIP 0x4000
#define V_FLIP 0x8000
#define BLANK_TILE 2
typedef struct
{
uint32_t TileSize;
uint32_t BitShift;
uint32_t TileShift;
uint32_t TileAddress;
uint32_t NameSelect;
uint32_t SCBase;
uint32_t StartPalette;
uint32_t PaletteShift;
uint32_t PaletteMask;
uint8_t* Buffer;
uint8_t* Buffered;
bool DirectColourMode;
} SBG;
typedef struct
{
int16_t MatrixA;
int16_t MatrixB;
int16_t MatrixC;
int16_t MatrixD;
int16_t CentreX;
int16_t CentreY;
} SLineMatrixData;
extern uint32_t even_high [4][16];
extern uint32_t even_low [4][16];
extern uint32_t odd_high [4][16];
extern uint32_t odd_low [4][16];
extern SBG BG;
extern uint16_t DirectColourMaps [8][256];
extern uint8_t mul_brightness [16][32];
/* Could use BSWAP instruction on Intel port... */
#define SWAP_DWORD(dword) dword = ((((dword) & 0x000000ff) << 24) \
| (((dword) & 0x0000ff00) << 8) \
| (((dword) & 0x00ff0000) >> 8) \
| (((dword) & 0xff000000) >> 24))
#ifdef FAST_LSB_WORD_ACCESS
#define READ_2BYTES(s) (*(uint16_t *) (s))
#define WRITE_2BYTES(s, d) *(uint16_t *) (s) = (d)
#elif defined(MSB_FIRST)
#define READ_2BYTES(s) (*(uint8_t *) (s) | (*((uint8_t *) (s) + 1) << 8))
#define WRITE_2BYTES(s, d) *(uint8_t *) (s) = (d), *((uint8_t *) (s) + 1) = (d) >> 8
#else
#define READ_2BYTES(s) (*(uint16_t *) (s))
#define WRITE_2BYTES(s, d) *(uint16_t *) (s) = (d)
#endif
#define SUB_SCREEN_DEPTH 0
#define MAIN_SCREEN_DEPTH 32
static INLINE uint16_t COLOR_ADD(uint16_t C1, uint16_t C2)
{
#if defined(USE_OLD_COLOUR_OPS)
/* Pre-1.60 colour operations */
if (C1 == 0)
return C2;
else if (C2 == 0)
return C1;
else
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);
#else
const int RED_MASK = 0x1F << RED_SHIFT_BITS;
const int GREEN_MASK = 0x1F << GREEN_SHIFT_BITS;
const int BLUE_MASK = 0x1F;
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 */
#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))
#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_t Tile, int32_t Offset, uint32_t StartLine, uint32_t LineCount);
typedef void (*ClippedTileRenderer)(uint32_t Tile, int32_t Offset, uint32_t StartPixel, uint32_t Width, uint32_t StartLine, uint32_t LineCount);
typedef void (*LargePixelRenderer)(uint32_t Tile, int32_t Offset, uint32_t StartPixel, uint32_t Pixels, uint32_t StartLine, uint32_t LineCount);
#endif
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