1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
|
/*
* 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;
uint8* SubScreen;
uint8* ZBuffer;
uint8* SubZBuffer;
uint32 Pitch;
// Setup in call to S9xGraphicsInit()
int Delta;
uint16* X2;
uint16* ZERO_OR_X2;
uint16* ZERO;
uint8* S;
uint8* DB;
uint32* ScreenColors;
uint32* ScreenColorsPre;
uint32 PaletteMask;
uint32 PaletteShift;
uint32 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 odd_high [4][16];
extern uint32 odd_low [4][16];
extern uint32 even_high [4][16];
extern uint32 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(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
#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(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
#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, uint32 Offset,
uint32 StartLine, uint32 LineCount);
typedef void (*ClippedTileRenderer)(uint32 Tile, uint32 Offset,
uint32 StartPixel, uint32 Width,
uint32 StartLine, uint32 LineCount);
typedef void (*LargePixelRenderer)(uint32 Tile, uint32 Offset,
uint32 StartPixel, uint32 Pixels,
uint32 StartLine, uint32 LineCount);
typedef struct
{
NormalTileRenderer Normal;
ClippedTileRenderer Clipped;
LargePixelRenderer Large;
} TileRendererSet;
START_EXTERN_C
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
END_EXTERN_C
#endif
|
