cc68a136 |
1 | // This is part of Pico Library\r |
2 | \r |
3 | // (c) Copyright 2004 Dave, All rights reserved.\r |
4 | // (c) Copyright 2006 notaz, All rights reserved.\r |
5 | // Free for non-commercial use.\r |
6 | \r |
7 | // For commercial use, separate licencing terms must be obtained.\r |
8 | \r |
9 | \r |
10 | #include "PicoInt.h"\r |
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11 | \r |
12 | int (*PicoScan)(unsigned int num, void *data)=NULL;\r |
13 | \r |
ea8c405f |
14 | #if OVERRIDE_HIGHCOL\r |
15 | static unsigned char DefHighCol[8+320+8];\r |
16 | unsigned char *HighCol=DefHighCol;\r |
17 | #else\r |
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18 | unsigned char HighCol[8+320+8];\r |
ea8c405f |
19 | #endif\r |
20 | unsigned short DefOutBuff[320*2];\r |
21 | void *DrawLineDest=DefOutBuff; // pointer to dest buffer where to draw this line to\r |
22 | \r |
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23 | static int HighCacheA[41+1]; // caches for high layers\r |
24 | static int HighCacheB[41+1];\r |
25 | static int HighCacheS[80+1]; // and sprites\r |
26 | static int HighPreSpr[80*2+1]; // slightly preprocessed sprites\r |
27 | char HighSprZ[320+8+8]; // Z-buffer for accurate sprites and shadow/hilight mode\r |
28 | // (if bit 7 == 0, sh caused by tile; if bit 6 == 0 pixel must be shadowed, else hilighted, if bit5 == 1)\r |
740da8c6 |
29 | // lsb->msb: moved sprites, not all window tiles use same priority, accurate sprites (copied from PicoOpt), interlace\r |
30 | // dirty sprites, sonic mode, have layer with all hi prio tiles (mk3), layer sh/hi already processed\r |
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31 | int rendstatus;\r |
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32 | int Scanline=0; // Scanline\r |
33 | \r |
34 | static int SpriteBlocks;\r |
35 | //unsigned short ppt[] = { 0x0f11, 0x0ff1, 0x01f1, 0x011f, 0x01ff, 0x0f1f, 0x0f0e, 0x0e7c };\r |
36 | \r |
37 | struct TileStrip\r |
38 | {\r |
39 | int nametab; // Position in VRAM of name table (for this tile line)\r |
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40 | int line; // Line number in pixels 0x000-0x3ff within the virtual tilemap\r |
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41 | int hscroll; // Horizontal scroll value in pixels for the line\r |
42 | int xmask; // X-Mask (0x1f - 0x7f) for horizontal wraparound in the tilemap\r |
43 | int *hc; // cache for high tile codes and their positions\r |
44 | int cells; // cells (tiles) to draw (32 col mode doesn't need to update whole 320)\r |
45 | };\r |
46 | \r |
47 | // stuff available in asm:\r |
48 | #ifdef _ASM_DRAW_C\r |
49 | void DrawWindow(int tstart, int tend, int prio, int sh);\r |
50 | void BackFill(int reg7, int sh);\r |
51 | void DrawSprite(int *sprite, int **hc, int sh);\r |
7a7c6476 |
52 | void DrawTilesFromCache(int *hc, int sh, int rlim);\r |
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53 | void DrawSpritesFromCache(int *hc, int sh);\r |
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54 | void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells);\r |
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55 | void FinalizeLineBGR444(int sh);\r |
56 | void FinalizeLineRGB555(int sh);\r |
57 | void blockcpy_or(void *dst, void *src, size_t n, int pat);\r |
58 | #else\r |
59 | // utility\r |
60 | void blockcpy_or(void *dst, void *src, size_t n, int pat)\r |
61 | {\r |
62 | unsigned char *pd = dst, *ps = src;\r |
63 | for (; n; n--)\r |
64 | *pd++ = (unsigned char) (*ps++ | pat);\r |
65 | }\r |
66 | #endif\r |
67 | \r |
68 | \r |
b542be46 |
69 | #ifdef _ASM_DRAW_C_AMIPS\r |
8ef001cc |
70 | int TileNorm(int sx,int addr,int pal);\r |
71 | int TileFlip(int sx,int addr,int pal);\r |
72 | #else\r |
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73 | static int TileNorm(int sx,int addr,int pal)\r |
74 | {\r |
75 | unsigned char *pd = HighCol+sx;\r |
76 | unsigned int pack=0; unsigned int t=0;\r |
77 | \r |
78 | pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
79 | if (pack)\r |
80 | {\r |
81 | t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12));\r |
82 | t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8));\r |
83 | t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4));\r |
84 | t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t ));\r |
85 | t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28));\r |
86 | t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24));\r |
87 | t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20));\r |
88 | t=pack&0x000f0000; if (t) pd[7]=(unsigned char)(pal|(t>>16));\r |
89 | return 0;\r |
90 | }\r |
91 | \r |
92 | return 1; // Tile blank\r |
93 | }\r |
94 | \r |
95 | static int TileFlip(int sx,int addr,int pal)\r |
96 | {\r |
97 | unsigned char *pd = HighCol+sx;\r |
98 | unsigned int pack=0; unsigned int t=0;\r |
99 | \r |
100 | pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
101 | if (pack)\r |
102 | {\r |
103 | t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16));\r |
104 | t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20));\r |
105 | t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24));\r |
106 | t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28));\r |
107 | t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t ));\r |
108 | t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4));\r |
109 | t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8));\r |
110 | t=pack&0x0000f000; if (t) pd[7]=(unsigned char)(pal|(t>>12));\r |
111 | return 0;\r |
112 | }\r |
113 | return 1; // Tile blank\r |
114 | }\r |
8ef001cc |
115 | #endif\r |
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116 | \r |
117 | // tile renderers for hacky operator sprite support\r |
118 | #define sh_pix(x) \\r |
119 | if(!t); \\r |
120 | else if(t==0xe) pd[x]=(unsigned char)((pd[x]&0x3f)|0x80); /* hilight */ \\r |
121 | else if(t==0xf) pd[x]=(unsigned char)((pd[x]&0x3f)|0xc0); /* shadow */ \\r |
122 | else pd[x]=(unsigned char)(pal|t)\r |
123 | \r |
124 | #ifndef _ASM_DRAW_C\r |
125 | static int TileNormSH(int sx,int addr,int pal)\r |
126 | {\r |
127 | unsigned int pack=0; unsigned int t=0;\r |
128 | unsigned char *pd = HighCol+sx;\r |
129 | \r |
130 | pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
131 | if (pack)\r |
132 | {\r |
133 | t=(pack&0x0000f000)>>12; sh_pix(0);\r |
134 | t=(pack&0x00000f00)>> 8; sh_pix(1);\r |
135 | t=(pack&0x000000f0)>> 4; sh_pix(2);\r |
136 | t=(pack&0x0000000f) ; sh_pix(3);\r |
137 | t=(pack&0xf0000000)>>28; sh_pix(4);\r |
138 | t=(pack&0x0f000000)>>24; sh_pix(5);\r |
139 | t=(pack&0x00f00000)>>20; sh_pix(6);\r |
140 | t=(pack&0x000f0000)>>16; sh_pix(7);\r |
141 | return 0;\r |
142 | }\r |
143 | \r |
144 | return 1; // Tile blank\r |
145 | }\r |
146 | \r |
147 | static int TileFlipSH(int sx,int addr,int pal)\r |
148 | {\r |
149 | unsigned int pack=0; unsigned int t=0;\r |
150 | unsigned char *pd = HighCol+sx;\r |
151 | \r |
152 | pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
153 | if (pack)\r |
154 | {\r |
155 | t=(pack&0x000f0000)>>16; sh_pix(0);\r |
156 | t=(pack&0x00f00000)>>20; sh_pix(1);\r |
157 | t=(pack&0x0f000000)>>24; sh_pix(2);\r |
158 | t=(pack&0xf0000000)>>28; sh_pix(3);\r |
159 | t=(pack&0x0000000f) ; sh_pix(4);\r |
160 | t=(pack&0x000000f0)>> 4; sh_pix(5);\r |
161 | t=(pack&0x00000f00)>> 8; sh_pix(6);\r |
162 | t=(pack&0x0000f000)>>12; sh_pix(7);\r |
163 | return 0;\r |
164 | }\r |
165 | return 1; // Tile blank\r |
166 | }\r |
167 | #endif\r |
168 | \r |
169 | static int TileNormZ(int sx,int addr,int pal,int zval)\r |
170 | {\r |
171 | unsigned int pack=0; unsigned int t=0;\r |
172 | unsigned char *pd = HighCol+sx;\r |
173 | char *zb = HighSprZ+sx;\r |
174 | int collision = 0, zb_s;\r |
175 | \r |
176 | pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
177 | if (pack)\r |
178 | {\r |
179 | t=pack&0x0000f000; if(t) { zb_s=zb[0]; if(zb_s) collision=1; if(zval>zb_s) { pd[0]=(unsigned char)(pal|(t>>12)); zb[0]=(char)zval; } }\r |
180 | t=pack&0x00000f00; if(t) { zb_s=zb[1]; if(zb_s) collision=1; if(zval>zb_s) { pd[1]=(unsigned char)(pal|(t>> 8)); zb[1]=(char)zval; } }\r |
181 | t=pack&0x000000f0; if(t) { zb_s=zb[2]; if(zb_s) collision=1; if(zval>zb_s) { pd[2]=(unsigned char)(pal|(t>> 4)); zb[2]=(char)zval; } }\r |
182 | t=pack&0x0000000f; if(t) { zb_s=zb[3]; if(zb_s) collision=1; if(zval>zb_s) { pd[3]=(unsigned char)(pal|(t )); zb[3]=(char)zval; } }\r |
183 | t=pack&0xf0000000; if(t) { zb_s=zb[4]; if(zb_s) collision=1; if(zval>zb_s) { pd[4]=(unsigned char)(pal|(t>>28)); zb[4]=(char)zval; } }\r |
184 | t=pack&0x0f000000; if(t) { zb_s=zb[5]; if(zb_s) collision=1; if(zval>zb_s) { pd[5]=(unsigned char)(pal|(t>>24)); zb[5]=(char)zval; } }\r |
185 | t=pack&0x00f00000; if(t) { zb_s=zb[6]; if(zb_s) collision=1; if(zval>zb_s) { pd[6]=(unsigned char)(pal|(t>>20)); zb[6]=(char)zval; } }\r |
186 | t=pack&0x000f0000; if(t) { zb_s=zb[7]; if(zb_s) collision=1; if(zval>zb_s) { pd[7]=(unsigned char)(pal|(t>>16)); zb[7]=(char)zval; } }\r |
187 | if(collision) Pico.video.status|=0x20;\r |
188 | return 0;\r |
189 | }\r |
190 | \r |
191 | return 1; // Tile blank\r |
192 | }\r |
193 | \r |
194 | static int TileFlipZ(int sx,int addr,int pal,int zval)\r |
195 | {\r |
196 | unsigned int pack=0; unsigned int t=0;\r |
197 | unsigned char *pd = HighCol+sx;\r |
198 | char *zb = HighSprZ+sx;\r |
199 | int collision = 0, zb_s;\r |
200 | \r |
201 | pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
202 | if (pack)\r |
203 | {\r |
204 | t=pack&0x000f0000; if(t) { zb_s=zb[0]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[0]=(unsigned char)(pal|(t>>16)); zb[0]=(char)zval; } }\r |
205 | t=pack&0x00f00000; if(t) { zb_s=zb[1]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[1]=(unsigned char)(pal|(t>>20)); zb[1]=(char)zval; } }\r |
206 | t=pack&0x0f000000; if(t) { zb_s=zb[2]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[2]=(unsigned char)(pal|(t>>24)); zb[2]=(char)zval; } }\r |
207 | t=pack&0xf0000000; if(t) { zb_s=zb[3]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[3]=(unsigned char)(pal|(t>>28)); zb[3]=(char)zval; } }\r |
208 | t=pack&0x0000000f; if(t) { zb_s=zb[4]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[4]=(unsigned char)(pal|(t )); zb[4]=(char)zval; } }\r |
209 | t=pack&0x000000f0; if(t) { zb_s=zb[5]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[5]=(unsigned char)(pal|(t>> 4)); zb[5]=(char)zval; } }\r |
210 | t=pack&0x00000f00; if(t) { zb_s=zb[6]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[6]=(unsigned char)(pal|(t>> 8)); zb[6]=(char)zval; } }\r |
211 | t=pack&0x0000f000; if(t) { zb_s=zb[7]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[7]=(unsigned char)(pal|(t>>12)); zb[7]=(char)zval; } }\r |
212 | if(collision) Pico.video.status|=0x20;\r |
213 | return 0;\r |
214 | }\r |
215 | return 1; // Tile blank\r |
216 | }\r |
217 | \r |
218 | \r |
219 | #define sh_pixZ(x) \\r |
220 | if(t) { \\r |
221 | if(zb[x]) collision=1; \\r |
222 | if(zval>zb[x]) { \\r |
223 | if (t==0xe) { pd[x]=(unsigned char)((pd[x]&0x3f)|0x80); /* hilight */ } \\r |
224 | else if(t==0xf) { pd[x]=(unsigned char)((pd[x]&0x3f)|0xc0); /* shadow */ } \\r |
225 | else { zb[x]=(char)zval; pd[x]=(unsigned char)(pal|t); } \\r |
226 | } \\r |
227 | }\r |
228 | \r |
229 | static int TileNormZSH(int sx,int addr,int pal,int zval)\r |
230 | {\r |
231 | unsigned int pack=0; unsigned int t=0;\r |
232 | unsigned char *pd = HighCol+sx;\r |
233 | char *zb = HighSprZ+sx;\r |
234 | int collision = 0;\r |
235 | \r |
236 | pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
237 | if (pack)\r |
238 | {\r |
239 | t=(pack&0x0000f000)>>12; sh_pixZ(0);\r |
240 | t=(pack&0x00000f00)>> 8; sh_pixZ(1);\r |
241 | t=(pack&0x000000f0)>> 4; sh_pixZ(2);\r |
242 | t=(pack&0x0000000f) ; sh_pixZ(3);\r |
243 | t=(pack&0xf0000000)>>28; sh_pixZ(4);\r |
244 | t=(pack&0x0f000000)>>24; sh_pixZ(5);\r |
245 | t=(pack&0x00f00000)>>20; sh_pixZ(6);\r |
246 | t=(pack&0x000f0000)>>16; sh_pixZ(7);\r |
247 | if(collision) Pico.video.status|=0x20;\r |
248 | return 0;\r |
249 | }\r |
250 | \r |
251 | return 1; // Tile blank\r |
252 | }\r |
253 | \r |
254 | static int TileFlipZSH(int sx,int addr,int pal,int zval)\r |
255 | {\r |
256 | unsigned int pack=0; unsigned int t=0;\r |
257 | unsigned char *pd = HighCol+sx;\r |
258 | char *zb = HighSprZ+sx;\r |
259 | int collision = 0;\r |
260 | \r |
261 | pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
262 | if (pack)\r |
263 | {\r |
264 | t=(pack&0x000f0000)>>16; sh_pixZ(0);\r |
265 | t=(pack&0x00f00000)>>20; sh_pixZ(1);\r |
266 | t=(pack&0x0f000000)>>24; sh_pixZ(2);\r |
267 | t=(pack&0xf0000000)>>28; sh_pixZ(3);\r |
268 | t=(pack&0x0000000f) ; sh_pixZ(4);\r |
269 | t=(pack&0x000000f0)>> 4; sh_pixZ(5);\r |
270 | t=(pack&0x00000f00)>> 8; sh_pixZ(6);\r |
271 | t=(pack&0x0000f000)>>12; sh_pixZ(7);\r |
272 | if(collision) Pico.video.status|=0x20;\r |
273 | return 0;\r |
274 | }\r |
275 | return 1; // Tile blank\r |
276 | }\r |
277 | \r |
278 | // --------------------------------------------\r |
279 | \r |
280 | #ifndef _ASM_DRAW_C\r |
83c093a4 |
281 | static void DrawStrip(struct TileStrip *ts, int plane_sh, int cellskip)\r |
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282 | {\r |
83c093a4 |
283 | int tilex,dx,ty,code=0,addr=0,cells;\r |
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284 | int oldcode=-1,blank=-1; // The tile we know is blank\r |
83c093a4 |
285 | int pal=0,sh;\r |
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286 | \r |
287 | // Draw tiles across screen:\r |
83c093a4 |
288 | sh=(plane_sh<<5)&0x40;\r |
289 | tilex=((-ts->hscroll)>>3)+cellskip;\r |
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290 | ty=(ts->line&7)<<1; // Y-Offset into tile\r |
291 | dx=((ts->hscroll-1)&7)+1;\r |
83c093a4 |
292 | cells = ts->cells - cellskip;\r |
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293 | if(dx != 8) cells++; // have hscroll, need to draw 1 cell more\r |
83c093a4 |
294 | dx+=cellskip<<3;\r |
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295 | \r |
83c093a4 |
296 | for (; cells > 0; dx+=8,tilex++,cells--)\r |
cc68a136 |
297 | {\r |
298 | int zero=0;\r |
299 | \r |
300 | code=Pico.vram[ts->nametab+(tilex&ts->xmask)];\r |
301 | if (code==blank) continue;\r |
302 | if (code>>15) { // high priority tile\r |
303 | int cval = code | (dx<<16) | (ty<<25);\r |
304 | if(code&0x1000) cval^=7<<26;\r |
305 | *ts->hc++ = cval; // cache it\r |
306 | continue;\r |
307 | }\r |
308 | \r |
309 | if (code!=oldcode) {\r |
310 | oldcode = code;\r |
311 | // Get tile address/2:\r |
312 | addr=(code&0x7ff)<<4;\r |
313 | addr+=ty;\r |
314 | if (code&0x1000) addr^=0xe; // Y-flip\r |
315 | \r |
83c093a4 |
316 | pal=((code>>9)&0x30)|sh;\r |
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317 | }\r |
318 | \r |
319 | if (code&0x0800) zero=TileFlip(dx,addr,pal);\r |
320 | else zero=TileNorm(dx,addr,pal);\r |
321 | \r |
322 | if (zero) blank=code; // We know this tile is blank now\r |
323 | }\r |
324 | \r |
325 | // terminate the cache list\r |
326 | *ts->hc = 0;\r |
740da8c6 |
327 | // if oldcode wasn't changed, it means all layer is hi priority\r |
328 | if (oldcode == -1) rendstatus|=0x40;\r |
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329 | }\r |
cc68a136 |
330 | \r |
331 | // this is messy\r |
83c093a4 |
332 | void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)\r |
cc68a136 |
333 | {\r |
83c093a4 |
334 | int tilex,dx,code=0,addr=0,cell=0;\r |
cc68a136 |
335 | int oldcode=-1,blank=-1; // The tile we know is blank\r |
336 | int pal=0,scan=Scanline;\r |
337 | \r |
338 | // Draw tiles across screen:\r |
339 | tilex=(-ts->hscroll)>>3;\r |
340 | dx=((ts->hscroll-1)&7)+1;\r |
83c093a4 |
341 | if(dx != 8) cell--; // have hscroll, start with negative cell\r |
342 | cell+=cellskip;\r |
343 | tilex+=cellskip;\r |
344 | dx+=cellskip<<3;\r |
cc68a136 |
345 | \r |
346 | for (; cell < ts->cells; dx+=8,tilex++,cell++)\r |
347 | {\r |
83c093a4 |
348 | int zero=0,nametabadd,ty;\r |
cc68a136 |
349 | \r |
83c093a4 |
350 | //if((cell&1)==0)\r |
351 | {\r |
cc68a136 |
352 | int line,vscroll;\r |
83c093a4 |
353 | vscroll=Pico.vsram[(plane_sh&1)+(cell&~1)];\r |
cc68a136 |
354 | \r |
355 | // Find the line in the name table\r |
356 | line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask ..\r |
357 | nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width]\r |
358 | ty=(line&7)<<1; // Y-Offset into tile\r |
359 | }\r |
360 | \r |
361 | code=Pico.vram[ts->nametab+nametabadd+(tilex&ts->xmask)];\r |
362 | if (code==blank) continue;\r |
363 | if (code>>15) { // high priority tile\r |
364 | int cval = code | (dx<<16) | (ty<<25);\r |
365 | if(code&0x1000) cval^=7<<26;\r |
366 | *ts->hc++ = cval; // cache it\r |
367 | continue;\r |
368 | }\r |
369 | \r |
370 | if (code!=oldcode) {\r |
371 | oldcode = code;\r |
372 | // Get tile address/2:\r |
373 | addr=(code&0x7ff)<<4;\r |
374 | if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip\r |
375 | \r |
83c093a4 |
376 | pal=((code>>9)&0x30)|((plane_sh<<5)&0x40);\r |
cc68a136 |
377 | }\r |
378 | \r |
379 | if (code&0x0800) zero=TileFlip(dx,addr,pal);\r |
380 | else zero=TileNorm(dx,addr,pal);\r |
381 | \r |
382 | if (zero) blank=code; // We know this tile is blank now\r |
383 | }\r |
384 | \r |
385 | // terminate the cache list\r |
386 | *ts->hc = 0;\r |
740da8c6 |
387 | if (oldcode == -1) rendstatus|=0x40;\r |
cc68a136 |
388 | }\r |
6d7acf9e |
389 | #endif\r |
cc68a136 |
390 | \r |
391 | #ifndef _ASM_DRAW_C\r |
392 | static\r |
393 | #endif\r |
394 | void DrawStripInterlace(struct TileStrip *ts)\r |
395 | {\r |
396 | int tilex=0,dx=0,ty=0,code=0,addr=0,cells;\r |
397 | int oldcode=-1,blank=-1; // The tile we know is blank\r |
398 | int pal=0;\r |
399 | \r |
400 | // Draw tiles across screen:\r |
401 | tilex=(-ts->hscroll)>>3;\r |
402 | ty=(ts->line&15)<<1; // Y-Offset into tile\r |
403 | dx=((ts->hscroll-1)&7)+1;\r |
404 | cells = ts->cells;\r |
405 | if(dx != 8) cells++; // have hscroll, need to draw 1 cell more\r |
406 | \r |
407 | for (; cells; dx+=8,tilex++,cells--)\r |
408 | {\r |
409 | int zero=0;\r |
410 | \r |
411 | code=Pico.vram[ts->nametab+(tilex&ts->xmask)];\r |
412 | if (code==blank) continue;\r |
413 | if (code>>15) { // high priority tile\r |
414 | int cval = (code&0xfc00) | (dx<<16) | (ty<<25);\r |
415 | cval|=(code&0x3ff)<<1;\r |
416 | if(code&0x1000) cval^=0xf<<26;\r |
417 | *ts->hc++ = cval; // cache it\r |
418 | continue;\r |
419 | }\r |
420 | \r |
421 | if (code!=oldcode) {\r |
422 | oldcode = code;\r |
423 | // Get tile address/2:\r |
424 | addr=(code&0x7ff)<<5;\r |
425 | if (code&0x1000) addr+=30-ty; else addr+=ty; // Y-flip\r |
426 | \r |
427 | // pal=Pico.cram+((code>>9)&0x30);\r |
428 | pal=((code>>9)&0x30);\r |
429 | }\r |
430 | \r |
431 | if (code&0x0800) zero=TileFlip(dx,addr,pal);\r |
432 | else zero=TileNorm(dx,addr,pal);\r |
433 | \r |
434 | if (zero) blank=code; // We know this tile is blank now\r |
435 | }\r |
436 | \r |
437 | // terminate the cache list\r |
438 | *ts->hc = 0;\r |
439 | }\r |
440 | \r |
441 | // --------------------------------------------\r |
442 | \r |
443 | #ifndef _ASM_DRAW_C\r |
83c093a4 |
444 | static void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells)\r |
cc68a136 |
445 | {\r |
446 | struct PicoVideo *pvid=&Pico.video;\r |
447 | const char shift[4]={5,6,5,7}; // 32,64 or 128 sized tilemaps (2 is invalid)\r |
448 | struct TileStrip ts;\r |
449 | int width, height, ymask;\r |
450 | int vscroll, htab;\r |
451 | \r |
452 | ts.hc=hcache;\r |
453 | ts.cells=maxcells;\r |
454 | \r |
455 | // Work out the TileStrip to draw\r |
456 | \r |
457 | // Work out the name table size: 32 64 or 128 tiles (0-3)\r |
458 | width=pvid->reg[16];\r |
459 | height=(width>>4)&3; width&=3;\r |
460 | \r |
461 | ts.xmask=(1<<shift[width])-1; // X Mask in tiles (0x1f-0x7f)\r |
462 | ymask=(height<<8)|0xff; // Y Mask in pixels\r |
463 | if(width == 1) ymask&=0x1ff;\r |
464 | else if(width>1) ymask =0x0ff;\r |
465 | \r |
466 | // Find name table:\r |
83c093a4 |
467 | if (plane_sh&1) ts.nametab=(pvid->reg[4]&0x07)<<12; // B\r |
468 | else ts.nametab=(pvid->reg[2]&0x38)<< 9; // A\r |
cc68a136 |
469 | \r |
470 | htab=pvid->reg[13]<<9; // Horizontal scroll table address\r |
471 | if ( pvid->reg[11]&2) htab+=Scanline<<1; // Offset by line\r |
472 | if ((pvid->reg[11]&1)==0) htab&=~0xf; // Offset by tile\r |
83c093a4 |
473 | htab+=plane_sh&1; // A or B\r |
cc68a136 |
474 | \r |
475 | // Get horizontal scroll value, will be masked later\r |
476 | ts.hscroll=Pico.vram[htab&0x7fff];\r |
477 | \r |
478 | if((pvid->reg[12]&6) == 6) {\r |
479 | // interlace mode 2\r |
83c093a4 |
480 | vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value\r |
cc68a136 |
481 | \r |
482 | // Find the line in the name table\r |
483 | ts.line=(vscroll+(Scanline<<1))&((ymask<<1)|1);\r |
484 | ts.nametab+=(ts.line>>4)<<shift[width];\r |
485 | \r |
486 | DrawStripInterlace(&ts);\r |
487 | } else if( pvid->reg[11]&4) {\r |
488 | // shit, we have 2-cell column based vscroll\r |
489 | // luckily this doesn't happen too often\r |
490 | ts.line=ymask|(shift[width]<<24); // save some stuff instead of line\r |
83c093a4 |
491 | DrawStripVSRam(&ts, plane_sh, cellskip);\r |
cc68a136 |
492 | } else {\r |
83c093a4 |
493 | vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value\r |
cc68a136 |
494 | \r |
495 | // Find the line in the name table\r |
496 | ts.line=(vscroll+Scanline)&ymask;\r |
497 | ts.nametab+=(ts.line>>3)<<shift[width];\r |
498 | \r |
83c093a4 |
499 | DrawStrip(&ts, plane_sh, cellskip);\r |
cc68a136 |
500 | }\r |
501 | }\r |
502 | \r |
503 | \r |
504 | // --------------------------------------------\r |
505 | \r |
506 | // tstart & tend are tile pair numbers\r |
507 | static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache\r |
508 | {\r |
509 | struct PicoVideo *pvid=&Pico.video;\r |
510 | int tilex=0,ty=0,nametab,code=0;\r |
511 | int blank=-1; // The tile we know is blank\r |
512 | \r |
513 | // Find name table line:\r |
514 | if (pvid->reg[12]&1)\r |
515 | {\r |
516 | nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode\r |
517 | nametab+=(Scanline>>3)<<6;\r |
518 | }\r |
519 | else\r |
520 | {\r |
521 | nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode\r |
522 | nametab+=(Scanline>>3)<<5;\r |
523 | }\r |
524 | \r |
525 | tilex=tstart<<1;\r |
526 | tend<<=1;\r |
527 | \r |
528 | ty=(Scanline&7)<<1; // Y-Offset into tile\r |
529 | \r |
530 | if(!(rendstatus&2)) {\r |
531 | // check the first tile code\r |
532 | code=Pico.vram[nametab+tilex];\r |
533 | // if the whole window uses same priority (what is often the case), we may be able to skip this field\r |
534 | if((code>>15) != prio) return;\r |
535 | }\r |
536 | \r |
537 | // Draw tiles across screen:\r |
81fda4e8 |
538 | if (!sh)\r |
cc68a136 |
539 | {\r |
81fda4e8 |
540 | for (; tilex < tend; tilex++)\r |
541 | {\r |
542 | int addr=0,zero=0;\r |
543 | int pal;\r |
544 | \r |
545 | code=Pico.vram[nametab+tilex];\r |
546 | if(code==blank) continue;\r |
547 | if((code>>15) != prio) {\r |
548 | rendstatus|=2;\r |
549 | continue;\r |
550 | }\r |
cc68a136 |
551 | \r |
81fda4e8 |
552 | pal=((code>>9)&0x30);\r |
553 | \r |
554 | // Get tile address/2:\r |
555 | addr=(code&0x7ff)<<4;\r |
556 | if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip\r |
557 | \r |
558 | if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);\r |
559 | else zero=TileNorm(8+(tilex<<3),addr,pal);\r |
560 | \r |
561 | if (zero) blank=code; // We know this tile is blank now\r |
cc68a136 |
562 | }\r |
81fda4e8 |
563 | }\r |
564 | else\r |
565 | {\r |
566 | for (; tilex < tend; tilex++)\r |
567 | {\r |
568 | int addr=0,zero=0;\r |
569 | int pal, tmp, *zb;\r |
570 | \r |
571 | code=Pico.vram[nametab+tilex];\r |
572 | if(code==blank) continue;\r |
573 | if((code>>15) != prio) {\r |
574 | rendstatus|=2;\r |
575 | continue;\r |
576 | }\r |
cc68a136 |
577 | \r |
81fda4e8 |
578 | pal=((code>>9)&0x30);\r |
cc68a136 |
579 | \r |
81fda4e8 |
580 | zb = (int *)(HighCol+8+(tilex<<3));\r |
cc68a136 |
581 | if(prio) {\r |
582 | tmp = *zb;\r |
583 | if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;\r |
584 | if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;\r |
585 | *zb++=tmp; tmp = *zb;\r |
586 | if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;\r |
587 | if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;\r |
588 | *zb++=tmp;\r |
589 | } else {\r |
590 | pal |= 0x40;\r |
591 | }\r |
cc68a136 |
592 | \r |
81fda4e8 |
593 | // Get tile address/2:\r |
594 | addr=(code&0x7ff)<<4;\r |
595 | if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip\r |
cc68a136 |
596 | \r |
81fda4e8 |
597 | if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);\r |
598 | else zero=TileNorm(8+(tilex<<3),addr,pal);\r |
cc68a136 |
599 | \r |
81fda4e8 |
600 | if (zero) blank=code; // We know this tile is blank now\r |
601 | }\r |
cc68a136 |
602 | }\r |
cc68a136 |
603 | }\r |
604 | \r |
605 | // --------------------------------------------\r |
606 | \r |
81fda4e8 |
607 | static void DrawTilesFromCacheShPrep(void)\r |
608 | {\r |
609 | if (!(rendstatus&0x80))\r |
610 | {\r |
611 | // as some layer has covered whole line with hi priority tiles,\r |
612 | // we can process whole line and then act as if sh/hi mode was off.\r |
81fda4e8 |
613 | int c = 320/4, *zb = (int *)(HighCol+8);\r |
dca310c4 |
614 | rendstatus|=0x80;\r |
81fda4e8 |
615 | while (c--)\r |
616 | {\r |
617 | int tmp = *zb;\r |
618 | if (!(tmp & 0x80808080)) *zb=tmp&0x3f3f3f3f;\r |
619 | else {\r |
620 | if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;\r |
621 | if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;\r |
622 | *zb=tmp;\r |
623 | }\r |
624 | zb++;\r |
625 | }\r |
626 | }\r |
627 | }\r |
628 | \r |
7a7c6476 |
629 | static void DrawTilesFromCache(int *hc, int sh, int rlim)\r |
cc68a136 |
630 | {\r |
740da8c6 |
631 | int code, addr, dx;\r |
cc68a136 |
632 | int pal;\r |
cc68a136 |
633 | \r |
634 | // *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it\r |
635 | \r |
740da8c6 |
636 | if (sh && (rendstatus&0xc0))\r |
637 | {\r |
81fda4e8 |
638 | DrawTilesFromCacheShPrep();\r |
740da8c6 |
639 | sh = 0;\r |
640 | }\r |
cc68a136 |
641 | \r |
81fda4e8 |
642 | if (!sh)\r |
740da8c6 |
643 | {\r |
81fda4e8 |
644 | short blank=-1; // The tile we know is blank\r |
7a7c6476 |
645 | while ((code=*hc++)) {\r |
81fda4e8 |
646 | int zero;\r |
647 | if((short)code == blank) continue;\r |
740da8c6 |
648 | // Get tile address/2:\r |
649 | addr=(code&0x7ff)<<4;\r |
650 | addr+=(unsigned int)code>>25; // y offset into tile\r |
651 | dx=(code>>16)&0x1ff;\r |
740da8c6 |
652 | \r |
653 | pal=((code>>9)&0x30);\r |
7a7c6476 |
654 | if (rlim-dx < 0) goto last_cut_tile;\r |
740da8c6 |
655 | \r |
81fda4e8 |
656 | if (code&0x0800) zero=TileFlip(dx,addr,pal);\r |
657 | else zero=TileNorm(dx,addr,pal);\r |
658 | \r |
659 | if (zero) blank=(short)code;\r |
cc68a136 |
660 | }\r |
740da8c6 |
661 | }\r |
662 | else\r |
663 | {\r |
7a7c6476 |
664 | while ((code=*hc++)) {\r |
81fda4e8 |
665 | unsigned char *zb;\r |
740da8c6 |
666 | // Get tile address/2:\r |
667 | addr=(code&0x7ff)<<4;\r |
668 | addr+=(unsigned int)code>>25; // y offset into tile\r |
669 | dx=(code>>16)&0x1ff;\r |
81fda4e8 |
670 | zb = HighCol+dx;\r |
671 | if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;\r |
672 | if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;\r |
673 | if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;\r |
674 | if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;\r |
cc68a136 |
675 | \r |
740da8c6 |
676 | pal=((code>>9)&0x30);\r |
7a7c6476 |
677 | if (rlim-dx < 0) goto last_cut_tile;\r |
cc68a136 |
678 | \r |
81fda4e8 |
679 | if (code&0x0800) TileFlip(dx,addr,pal);\r |
680 | else TileNorm(dx,addr,pal);\r |
7a7c6476 |
681 | }\r |
682 | }\r |
683 | return;\r |
684 | \r |
685 | last_cut_tile:\r |
686 | {\r |
687 | unsigned int t, pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
688 | unsigned char *pd = HighCol+dx;\r |
689 | if (!pack) return;\r |
690 | if (code&0x0800)\r |
691 | {\r |
692 | switch (rlim-dx+8)\r |
693 | {\r |
694 | case 7: t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8)); // "break" is left out intentionally\r |
695 | case 6: t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4));\r |
696 | case 5: t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t ));\r |
697 | case 4: t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28));\r |
698 | case 3: t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24));\r |
699 | case 2: t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20));\r |
700 | case 1: t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16));\r |
701 | default: break;\r |
702 | }\r |
703 | }\r |
704 | else\r |
705 | {\r |
706 | switch (rlim-dx+8)\r |
707 | {\r |
708 | case 7: t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20));\r |
709 | case 6: t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24));\r |
710 | case 5: t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28));\r |
711 | case 4: t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t ));\r |
712 | case 3: t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4));\r |
713 | case 2: t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8));\r |
714 | case 1: t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12));\r |
715 | default: break;\r |
716 | }\r |
740da8c6 |
717 | }\r |
cc68a136 |
718 | }\r |
719 | }\r |
720 | \r |
721 | // --------------------------------------------\r |
722 | \r |
723 | // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size\r |
724 | // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8\r |
725 | \r |
726 | static void DrawSprite(int *sprite, int **hc, int sh)\r |
727 | {\r |
728 | int width=0,height=0;\r |
729 | int row=0,code=0;\r |
730 | int pal;\r |
731 | int tile=0,delta=0;\r |
732 | int sx, sy;\r |
733 | int (*fTileFunc)(int sx,int addr,int pal);\r |
734 | \r |
735 | // parse the sprite data\r |
736 | sy=sprite[0];\r |
737 | code=sprite[1];\r |
738 | sx=code>>16; // X\r |
739 | width=sy>>28;\r |
740 | height=(sy>>24)&7; // Width and height in tiles\r |
741 | sy=(sy<<16)>>16; // Y\r |
742 | \r |
743 | row=Scanline-sy; // Row of the sprite we are on\r |
744 | \r |
745 | if (code&0x1000) row=(height<<3)-1-row; // Flip Y\r |
746 | \r |
747 | tile=code&0x7ff; // Tile number\r |
748 | tile+=row>>3; // Tile number increases going down\r |
749 | delta=height; // Delta to increase tile by going right\r |
750 | if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X\r |
751 | \r |
752 | tile<<=4; tile+=(row&7)<<1; // Tile address\r |
753 | \r |
754 | if(code&0x8000) { // high priority - cache it\r |
755 | *(*hc)++ = (tile<<16)|((code&0x0800)<<5)|((sx<<6)&0x0000ffc0)|((code>>9)&0x30)|((sprite[0]>>16)&0xf);\r |
756 | } else {\r |
757 | delta<<=4; // Delta of address\r |
758 | pal=((code>>9)&0x30)|(sh<<6);\r |
759 | \r |
760 | if(sh && (code&0x6000) == 0x6000) {\r |
761 | if(code&0x0800) fTileFunc=TileFlipSH;\r |
762 | else fTileFunc=TileNormSH;\r |
763 | } else {\r |
764 | if(code&0x0800) fTileFunc=TileFlip;\r |
765 | else fTileFunc=TileNorm;\r |
766 | }\r |
767 | \r |
768 | for (; width; width--,sx+=8,tile+=delta)\r |
769 | {\r |
770 | if(sx<=0) continue;\r |
771 | if(sx>=328) break; // Offscreen\r |
772 | \r |
773 | tile&=0x7fff; // Clip tile address\r |
774 | fTileFunc(sx,tile,pal);\r |
775 | }\r |
776 | }\r |
777 | }\r |
778 | #endif\r |
779 | \r |
780 | \r |
781 | // Index + 0 : hhhhvvvv s---hhvv yyyyyyyy yyyyyyyy // s: skip flag, h: horiz. size\r |
782 | // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8\r |
783 | \r |
784 | static void DrawSpriteZ(int pack, int pack2, int shpri, int sprio)\r |
785 | {\r |
786 | int width=0,height=0;\r |
787 | int row=0;\r |
788 | int pal;\r |
789 | int tile=0,delta=0;\r |
790 | int sx, sy;\r |
791 | int (*fTileFunc)(int sx,int addr,int pal,int zval);\r |
792 | \r |
793 | // parse the sprite data\r |
794 | sx=pack2>>16; // X\r |
795 | sy=(pack <<16)>>16; // Y\r |
796 | width=pack>>28;\r |
797 | height=(pack>>24)&7; // Width and height in tiles\r |
798 | \r |
799 | row=Scanline-sy; // Row of the sprite we are on\r |
800 | \r |
801 | if (pack2&0x1000) row=(height<<3)-1-row; // Flip Y\r |
802 | \r |
803 | tile=pack2&0x7ff; // Tile number\r |
804 | tile+=row>>3; // Tile number increases going down\r |
805 | delta=height; // Delta to increase tile by going right\r |
806 | if (pack2&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X\r |
807 | \r |
808 | tile<<=4; tile+=(row&7)<<1; // Tile address\r |
809 | delta<<=4; // Delta of address\r |
810 | pal=((pack2>>9)&0x30);\r |
811 | if((shpri&1)&&!(shpri&2)) pal|=0x40;\r |
812 | \r |
813 | shpri&=1;\r |
814 | if((pack2&0x6000) != 0x6000) shpri = 0;\r |
815 | shpri |= (pack2&0x0800)>>10;\r |
816 | switch(shpri) {\r |
817 | default:\r |
818 | case 0: fTileFunc=TileNormZ; break;\r |
819 | case 1: fTileFunc=TileNormZSH; break;\r |
820 | case 2: fTileFunc=TileFlipZ; break;\r |
821 | case 3: fTileFunc=TileFlipZSH; break;\r |
822 | }\r |
823 | \r |
824 | for (; width; width--,sx+=8,tile+=delta)\r |
825 | {\r |
826 | if(sx<=0) continue;\r |
827 | if(sx>=328) break; // Offscreen\r |
828 | \r |
829 | tile&=0x7fff; // Clip tile address\r |
830 | fTileFunc(sx,tile,pal,sprio);\r |
831 | }\r |
832 | }\r |
833 | \r |
834 | static void DrawSpriteInterlace(unsigned int *sprite)\r |
835 | {\r |
836 | int width=0,height=0;\r |
837 | int row=0,code=0;\r |
838 | int pal;\r |
839 | int tile=0,delta=0;\r |
840 | int sx, sy;\r |
841 | \r |
842 | // parse the sprite data\r |
843 | sy=sprite[0];\r |
844 | height=sy>>24;\r |
845 | sy=(sy&0x3ff)-0x100; // Y\r |
846 | width=(height>>2)&3; height&=3;\r |
847 | width++; height++; // Width and height in tiles\r |
848 | \r |
849 | row=(Scanline<<1)-sy; // Row of the sprite we are on\r |
850 | \r |
851 | code=sprite[1];\r |
852 | sx=((code>>16)&0x1ff)-0x78; // X\r |
853 | \r |
854 | if (code&0x1000) row^=(16<<height)-1; // Flip Y\r |
855 | \r |
856 | tile=code&0x3ff; // Tile number\r |
857 | tile+=row>>4; // Tile number increases going down\r |
858 | delta=height; // Delta to increase tile by going right\r |
859 | if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X\r |
860 | \r |
861 | tile<<=5; tile+=(row&15)<<1; // Tile address\r |
862 | \r |
863 | delta<<=5; // Delta of address\r |
864 | pal=((code>>9)&0x30); // Get palette pointer\r |
865 | \r |
866 | for (; width; width--,sx+=8,tile+=delta)\r |
867 | {\r |
868 | if(sx<=0) continue;\r |
869 | if(sx>=328) break; // Offscreen\r |
870 | \r |
871 | tile&=0x7fff; // Clip tile address\r |
872 | if (code&0x0800) TileFlip(sx,tile,pal);\r |
873 | else TileNorm(sx,tile,pal);\r |
874 | }\r |
875 | }\r |
876 | \r |
877 | \r |
878 | static void DrawAllSpritesInterlace(int pri, int maxwidth)\r |
879 | {\r |
880 | struct PicoVideo *pvid=&Pico.video;\r |
881 | int i,u,table,link=0,sline=Scanline<<1;\r |
882 | unsigned int *sprites[80]; // Sprite index\r |
883 | \r |
884 | table=pvid->reg[5]&0x7f;\r |
885 | if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode\r |
886 | table<<=8; // Get sprite table address/2\r |
887 | \r |
888 | for (i=u=0; u < 80 && i < 21; u++)\r |
889 | {\r |
890 | unsigned int *sprite;\r |
891 | int code, sx, sy, height;\r |
892 | \r |
893 | sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite\r |
894 | \r |
895 | // get sprite info\r |
896 | code = sprite[0];\r |
897 | sx = sprite[1];\r |
898 | if(((sx>>15)&1) != pri) goto nextsprite; // wrong priority sprite\r |
899 | \r |
900 | // check if it is on this line\r |
901 | sy = (code&0x3ff)-0x100;\r |
902 | height = (((code>>24)&3)+1)<<4;\r |
903 | if(sline < sy || sline >= sy+height) goto nextsprite; // no\r |
904 | \r |
905 | // check if sprite is not hidden offscreen\r |
906 | sx = (sx>>16)&0x1ff;\r |
907 | sx -= 0x78; // Get X coordinate + 8\r |
908 | if(sx <= -8*3 || sx >= maxwidth) goto nextsprite;\r |
909 | \r |
910 | // sprite is good, save it's pointer\r |
911 | sprites[i++]=sprite;\r |
912 | \r |
913 | nextsprite:\r |
914 | // Find next sprite\r |
915 | link=(code>>16)&0x7f;\r |
916 | if(!link) break; // End of sprites\r |
917 | }\r |
918 | \r |
919 | // Go through sprites backwards:\r |
920 | for (i-- ;i>=0; i--)\r |
921 | DrawSpriteInterlace(sprites[i]);\r |
922 | }\r |
923 | \r |
924 | \r |
925 | #ifndef _ASM_DRAW_C\r |
926 | static void DrawSpritesFromCache(int *hc, int sh)\r |
927 | {\r |
928 | int code, tile, sx, delta, width;\r |
929 | int pal;\r |
930 | int (*fTileFunc)(int sx,int addr,int pal);\r |
931 | \r |
932 | // *(*hc)++ = (tile<<16)|((code&0x0800)<<5)|((sx<<6)&0x0000ffc0)|((code>>9)&0x30)|((sprite[0]>>24)&0xf);\r |
933 | \r |
934 | while((code=*hc++)) {\r |
935 | pal=(code&0x30);\r |
936 | delta=code&0xf;\r |
937 | width=delta>>2; delta&=3;\r |
938 | width++; delta++; // Width and height in tiles\r |
939 | if (code&0x10000) delta=-delta; // Flip X\r |
940 | delta<<=4;\r |
941 | tile=((unsigned int)code>>17)<<1;\r |
942 | sx=(code<<16)>>22; // sx can be negative (start offscreen), so sign extend\r |
943 | \r |
944 | if(sh && pal == 0x30) { //\r |
945 | if(code&0x10000) fTileFunc=TileFlipSH;\r |
946 | else fTileFunc=TileNormSH;\r |
947 | } else {\r |
948 | if(code&0x10000) fTileFunc=TileFlip;\r |
949 | else fTileFunc=TileNorm;\r |
950 | }\r |
951 | \r |
952 | for (; width; width--,sx+=8,tile+=delta)\r |
953 | {\r |
954 | if(sx<=0) continue;\r |
955 | if(sx>=328) break; // Offscreen\r |
956 | \r |
957 | tile&=0x7fff; // Clip tile address\r |
958 | fTileFunc(sx,tile,pal);\r |
959 | }\r |
960 | }\r |
961 | }\r |
962 | #endif\r |
963 | \r |
964 | \r |
965 | // Index + 0 : ----hhvv -lllllll -------y yyyyyyyy\r |
966 | // Index + 4 : -------x xxxxxxxx pccvhnnn nnnnnnnn\r |
967 | // v\r |
968 | // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size\r |
969 | // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8\r |
970 | \r |
971 | static void PrepareSprites(int full)\r |
972 | {\r |
973 | struct PicoVideo *pvid=&Pico.video;\r |
974 | int u=0,link=0,sblocks=0;\r |
975 | int table=0;\r |
976 | int *pd = HighPreSpr;\r |
977 | \r |
978 | table=pvid->reg[5]&0x7f;\r |
979 | if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode\r |
980 | table<<=8; // Get sprite table address/2\r |
981 | \r |
982 | if (!full)\r |
983 | {\r |
984 | int pack;\r |
985 | // updates: tilecode, sx\r |
986 | for (u=0; u < 80 && (pack = *pd); u++, pd+=2)\r |
987 | {\r |
988 | unsigned int *sprite;\r |
989 | int code, code2, sx, sy, skip=0;\r |
990 | \r |
991 | sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite\r |
992 | \r |
993 | // parse sprite info\r |
994 | code = sprite[0];\r |
995 | code2 = sprite[1];\r |
996 | code2 &= ~0xfe000000;\r |
997 | code2 -= 0x00780000; // Get X coordinate + 8 in upper 16 bits\r |
998 | sx = code2>>16;\r |
999 | \r |
1000 | if((sx <= 8-((pack>>28)<<3) && sx >= -0x76) || sx >= 328) skip=1<<23;\r |
1001 | else if ((sy = (pack<<16)>>16) < 240 && sy > -32) {\r |
1002 | int sbl = (2<<(pack>>28))-1;\r |
1003 | sblocks |= sbl<<(sy>>3);\r |
1004 | }\r |
1005 | \r |
1006 | *pd = (pack&~(1<<23))|skip;\r |
1007 | *(pd+1) = code2;\r |
1008 | \r |
1009 | // Find next sprite\r |
1010 | link=(code>>16)&0x7f;\r |
1011 | if(!link) break; // End of sprites\r |
1012 | }\r |
1013 | SpriteBlocks |= sblocks;\r |
1014 | }\r |
1015 | else\r |
1016 | {\r |
1017 | for (; u < 80; u++)\r |
1018 | {\r |
1019 | unsigned int *sprite;\r |
1020 | int code, code2, sx, sy, hv, height, width, skip=0, sx_min;\r |
1021 | \r |
1022 | sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite\r |
1023 | \r |
1024 | // parse sprite info\r |
1025 | code = sprite[0];\r |
1026 | sy = (code&0x1ff)-0x80;\r |
1027 | hv = (code>>24)&0xf;\r |
1028 | height = (hv&3)+1;\r |
1029 | \r |
1030 | if(sy > 240 || sy + (height<<3) <= 0) skip|=1<<22;\r |
6d7acf9e |
1031 | \r |
cc68a136 |
1032 | width = (hv>>2)+1;\r |
1033 | code2 = sprite[1];\r |
1034 | sx = (code2>>16)&0x1ff;\r |
1035 | sx -= 0x78; // Get X coordinate + 8\r |
1036 | sx_min = 8-(width<<3);\r |
6d7acf9e |
1037 | \r |
cc68a136 |
1038 | if((sx <= sx_min && sx >= -0x76) || sx >= 328) skip|=1<<23;\r |
1039 | else if (sx > sx_min && !skip) {\r |
1040 | int sbl = (2<<height)-1;\r |
1041 | int shi = sy>>3;\r |
1042 | if(shi < 0) shi=0; // negative sy\r |
1043 | sblocks |= sbl<<shi;\r |
1044 | }\r |
6d7acf9e |
1045 | \r |
cc68a136 |
1046 | *pd++ = (width<<28)|(height<<24)|skip|(hv<<16)|((unsigned short)sy);\r |
1047 | *pd++ = (sx<<16)|((unsigned short)code2);\r |
6d7acf9e |
1048 | \r |
cc68a136 |
1049 | // Find next sprite\r |
1050 | link=(code>>16)&0x7f;\r |
1051 | if(!link) break; // End of sprites\r |
1052 | }\r |
1053 | SpriteBlocks = sblocks;\r |
1054 | *pd = 0; // terminate\r |
1055 | }\r |
1056 | }\r |
1057 | \r |
1058 | static void DrawAllSprites(int *hcache, int maxwidth, int prio, int sh)\r |
1059 | {\r |
1060 | int i,u,n;\r |
1061 | int sx1seen=0; // sprite with x coord 1 or 0 seen\r |
1062 | int ntiles = 0; // tile counter for sprite limit emulation\r |
1063 | int *sprites[40]; // Sprites to draw in fast mode\r |
1064 | int *ps, pack, rs = rendstatus, scan=Scanline;\r |
1065 | \r |
1066 | if(rs&8) {\r |
1067 | DrawAllSpritesInterlace(prio, maxwidth);\r |
1068 | return;\r |
1069 | }\r |
1070 | if(rs&0x11) {\r |
1071 | //dprintf("PrepareSprites(%i) [%i]", (rs>>4)&1, scan);\r |
1072 | PrepareSprites(rs&0x10);\r |
1073 | rendstatus=rs&~0x11;\r |
1074 | }\r |
1075 | if (!(SpriteBlocks & (1<<(scan>>3)))) return;\r |
1076 | \r |
1077 | if(((rs&4)||sh)&&prio==0)\r |
1078 | memset(HighSprZ, 0, 328);\r |
1079 | if(!(rs&4)&&prio) {\r |
1080 | if(hcache[0]) DrawSpritesFromCache(hcache, sh);\r |
1081 | return;\r |
1082 | }\r |
1083 | \r |
1084 | ps = HighPreSpr;\r |
1085 | \r |
1086 | // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size\r |
1087 | // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8\r |
1088 | \r |
1089 | for(i=u=n=0; (pack = *ps) && n < 20; ps+=2, u++)\r |
1090 | {\r |
1091 | int sx, sy, row, pack2;\r |
1092 | \r |
1093 | if(pack & 0x00400000) continue;\r |
1094 | \r |
1095 | // get sprite info\r |
1096 | pack2 = *(ps+1);\r |
1097 | sx = pack2>>16;\r |
1098 | sy = (pack <<16)>>16;\r |
1099 | row = scan-sy;\r |
1100 | \r |
1101 | //dprintf("x: %i y: %i %ix%i", sx, sy, (pack>>28)<<3, (pack>>21)&0x38);\r |
1102 | \r |
1103 | if(sx == -0x77) sx1seen|=1; // for masking mode 2\r |
1104 | \r |
1105 | // check if it is on this line\r |
1106 | if(row < 0 || row >= ((pack>>21)&0x38)) continue; // no\r |
1107 | n++; // number of sprites on this line (both visible and hidden, max is 20) [broken]\r |
1108 | \r |
1109 | // sprite limit\r |
1110 | ntiles += pack>>28;\r |
1111 | if(ntiles > 40) break;\r |
1112 | \r |
1113 | if(pack & 0x00800000) continue;\r |
1114 | \r |
1115 | // masking sprite?\r |
1116 | if(sx == -0x78) {\r |
1117 | if(!(sx1seen&1) || sx1seen==3) {\r |
1118 | break; // this sprite is not drawn and remaining sprites are masked\r |
1119 | }\r |
1120 | if((sx1seen>>8) == 0) sx1seen=(i+1)<<8;\r |
1121 | continue;\r |
1122 | }\r |
1123 | else if(sx == -0x77) {\r |
1124 | // masking mode2 (Outrun, Galaxy Force II, Shadow of the beast)\r |
1125 | if(sx1seen>>8) { i=(sx1seen>>8)-1; break; } // seen both 0 and 1\r |
1126 | sx1seen |= 2;\r |
1127 | continue;\r |
1128 | }\r |
1129 | \r |
1130 | // accurate sprites\r |
1131 | //dprintf("P:%i",((sx>>15)&1));\r |
1132 | if(rs&4) {\r |
1133 | // might need to skip this sprite\r |
1134 | if((pack2&0x8000) ^ (prio<<15)) continue;\r |
1135 | DrawSpriteZ(pack,pack2,sh|(prio<<1),(char)(0x1f-n));\r |
1136 | continue;\r |
1137 | }\r |
1138 | \r |
1139 | // sprite is good, save it's pointer\r |
1140 | sprites[i++]=ps;\r |
1141 | }\r |
1142 | \r |
1143 | // Go through sprites backwards:\r |
1144 | if(!(rs&4)) {\r |
1145 | for (i--; i>=0; i--)\r |
1146 | DrawSprite(sprites[i],&hcache,sh);\r |
1147 | \r |
1148 | // terminate cache list\r |
1149 | *hcache = 0;\r |
1150 | }\r |
1151 | }\r |
1152 | \r |
1153 | \r |
1154 | // --------------------------------------------\r |
1155 | \r |
1156 | #ifndef _ASM_DRAW_C\r |
1157 | static void BackFill(int reg7, int sh)\r |
1158 | {\r |
b542be46 |
1159 | unsigned int back;\r |
cc68a136 |
1160 | \r |
1161 | // Start with a blank scanline (background colour):\r |
1162 | back=reg7&0x3f;\r |
1163 | back|=sh<<6;\r |
1164 | back|=back<<8;\r |
1165 | back|=back<<16;\r |
1166 | \r |
b542be46 |
1167 | memset32((int *)(HighCol+8), back, 320/4);\r |
cc68a136 |
1168 | }\r |
1169 | #endif\r |
1170 | \r |
1171 | // --------------------------------------------\r |
1172 | \r |
1173 | unsigned short HighPal[0x100];\r |
1174 | \r |
1175 | #ifndef _ASM_DRAW_C\r |
1176 | static void FinalizeLineBGR444(int sh)\r |
1177 | {\r |
1178 | unsigned short *pd=DrawLineDest;\r |
1179 | unsigned char *ps=HighCol+8;\r |
1180 | unsigned short *pal=Pico.cram;\r |
1181 | int len, i, t;\r |
1182 | \r |
1183 | if (Pico.video.reg[12]&1) {\r |
1184 | len = 320;\r |
1185 | } else {\r |
1186 | if(!(PicoOpt&0x100)) pd+=32;\r |
1187 | len = 256;\r |
1188 | }\r |
1189 | \r |
1190 | if(sh) {\r |
1191 | pal=HighPal;\r |
1192 | if(Pico.m.dirtyPal) {\r |
1193 | blockcpy(pal, Pico.cram, 0x40*2);\r |
1194 | // shadowed pixels\r |
1195 | for(i = 0x3f; i >= 0; i--)\r |
1196 | pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x0777);\r |
1197 | // hilighted pixels\r |
1198 | for(i = 0x3f; i >= 0; i--) {\r |
1199 | t=pal[i]&0xeee;t+=0x444;if(t&0x10)t|=0xe;if(t&0x100)t|=0xe0;if(t&0x1000)t|=0xe00;t&=0xeee;\r |
1200 | pal[0x80|i]=(unsigned short)t;\r |
1201 | }\r |
1202 | Pico.m.dirtyPal = 0;\r |
1203 | }\r |
1204 | }\r |
1205 | \r |
1206 | for(i = 0; i < len; i++)\r |
1207 | pd[i] = pal[ps[i]];\r |
1208 | }\r |
1209 | \r |
1210 | \r |
1211 | static void FinalizeLineRGB555(int sh)\r |
1212 | {\r |
1213 | unsigned short *pd=DrawLineDest;\r |
1214 | unsigned char *ps=HighCol+8;\r |
1215 | unsigned short *pal=HighPal;\r |
1216 | int len, i, t, dirtyPal = Pico.m.dirtyPal;\r |
1217 | \r |
70357ce5 |
1218 | if (dirtyPal)\r |
1219 | {\r |
1220 | unsigned int *spal=(void *)Pico.cram;\r |
1221 | unsigned int *dpal=(void *)HighPal;\r |
1222 | for (i = 0x3f/2; i >= 0; i--)\r |
1223 | #ifdef USE_BGR555\r |
1224 | dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);\r |
1225 | #else\r |
1226 | dpal[i] = ((spal[i]&0x000f000f)<<12)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)>>7);\r |
1227 | #endif\r |
cc68a136 |
1228 | Pico.m.dirtyPal = 0;\r |
1229 | }\r |
1230 | \r |
70357ce5 |
1231 | if (sh)\r |
1232 | {\r |
1233 | if (dirtyPal) {\r |
cc68a136 |
1234 | // shadowed pixels\r |
70357ce5 |
1235 | for (i = 0x3f; i >= 0; i--)\r |
cc68a136 |
1236 | pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x738e);\r |
1237 | // hilighted pixels\r |
70357ce5 |
1238 | for (i = 0x3f; i >= 0; i--) {\r |
cc68a136 |
1239 | t=pal[i]&0xe71c;t+=0x4208;if(t&0x20)t|=0x1c;if(t&0x800)t|=0x700;if(t&0x10000)t|=0xe000;t&=0xe71c;\r |
1240 | pal[0x80|i]=(unsigned short)t;\r |
1241 | }\r |
1242 | }\r |
1243 | }\r |
1244 | \r |
70357ce5 |
1245 | if (Pico.video.reg[12]&1) {\r |
1246 | len = 320;\r |
1247 | } else {\r |
1248 | if (!(PicoOpt&0x100)) pd+=32;\r |
1249 | len = 256;\r |
1250 | }\r |
1251 | \r |
1252 | #ifndef PSP\r |
1253 | for (i = 0; i < len; i++)\r |
cc68a136 |
1254 | pd[i] = pal[ps[i]];\r |
70357ce5 |
1255 | #else\r |
1256 | {\r |
1257 | extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);\r |
1258 | amips_clut(pd, ps, pal, len);\r |
1259 | }\r |
1260 | #endif\r |
cc68a136 |
1261 | }\r |
1262 | #endif\r |
1263 | \r |
1264 | static void FinalizeLine8bit(int sh)\r |
1265 | {\r |
1266 | unsigned char *pd=DrawLineDest;\r |
1267 | int len, rs = rendstatus;\r |
1268 | static int dirty_count;\r |
1269 | \r |
1270 | if (!sh && Pico.m.dirtyPal == 1 && Scanline < 222) {\r |
1271 | // a hack for mid-frame palette changes\r |
1272 | if (!(rs & 0x20))\r |
1273 | dirty_count = 1;\r |
1274 | else dirty_count++;\r |
1275 | rs |= 0x20;\r |
1276 | rendstatus = rs;\r |
1277 | if (dirty_count == 3) {\r |
1278 | blockcpy(HighPal, Pico.cram, 0x40*2);\r |
1279 | } else if (dirty_count == 11) {\r |
1280 | blockcpy(HighPal+0x40, Pico.cram, 0x40*2);\r |
1281 | }\r |
1282 | }\r |
1283 | \r |
1284 | if (Pico.video.reg[12]&1) {\r |
1285 | len = 320;\r |
1286 | } else {\r |
1287 | if(!(PicoOpt&0x100)) pd+=32;\r |
1288 | len = 256;\r |
1289 | }\r |
1290 | \r |
1291 | if (!sh && rs & 0x20) {\r |
1292 | if (dirty_count >= 11) {\r |
1293 | blockcpy_or(pd, HighCol+8, len, 0x80);\r |
1294 | } else {\r |
1295 | blockcpy_or(pd, HighCol+8, len, 0x40);\r |
1296 | }\r |
1297 | } else {\r |
1298 | blockcpy(pd, HighCol+8, len);\r |
1299 | }\r |
1300 | }\r |
1301 | \r |
ea8c405f |
1302 | static void (*FinalizeLine)(int sh) = FinalizeLineBGR444;\r |
cc68a136 |
1303 | \r |
1304 | // --------------------------------------------\r |
1305 | \r |
1306 | static int DrawDisplay(int sh)\r |
1307 | {\r |
1308 | struct PicoVideo *pvid=&Pico.video;\r |
1309 | int win=0,edge=0,hvwind=0;\r |
1310 | int maxw, maxcells;\r |
1311 | \r |
740da8c6 |
1312 | rendstatus&=~0xc0;\r |
1313 | \r |
cc68a136 |
1314 | if(pvid->reg[12]&1) {\r |
1315 | maxw = 328; maxcells = 40;\r |
1316 | } else {\r |
1317 | maxw = 264; maxcells = 32;\r |
1318 | }\r |
1319 | \r |
1320 | // Find out if the window is on this line:\r |
1321 | win=pvid->reg[0x12];\r |
1322 | edge=(win&0x1f)<<3;\r |
1323 | \r |
1324 | if (win&0x80) { if (Scanline>=edge) hvwind=1; }\r |
1325 | else { if (Scanline< edge) hvwind=1; }\r |
1326 | \r |
7a7c6476 |
1327 | if (!hvwind) { // we might have a vertical window here\r |
cc68a136 |
1328 | win=pvid->reg[0x11];\r |
1329 | edge=win&0x1f;\r |
7a7c6476 |
1330 | if (win&0x80) {\r |
1331 | if (!edge) hvwind=1;\r |
cc68a136 |
1332 | else if(edge < (maxcells>>1)) hvwind=2;\r |
1333 | } else {\r |
7a7c6476 |
1334 | if (!edge);\r |
cc68a136 |
1335 | else if(edge < (maxcells>>1)) hvwind=2;\r |
1336 | else hvwind=1;\r |
1337 | }\r |
1338 | }\r |
1339 | \r |
83c093a4 |
1340 | DrawLayer(1|(sh<<1), HighCacheB, 0, maxcells);\r |
7a7c6476 |
1341 | if (hvwind == 1)\r |
83c093a4 |
1342 | DrawWindow(0, maxcells>>1, 0, sh);\r |
7a7c6476 |
1343 | else if (hvwind == 2) {\r |
cc68a136 |
1344 | // ahh, we have vertical window\r |
83c093a4 |
1345 | DrawLayer(0|(sh<<1), HighCacheA, (win&0x80) ? 0 : edge<<1, (win&0x80) ? edge<<1 : maxcells);\r |
1346 | DrawWindow( (win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 0, sh);\r |
cc68a136 |
1347 | } else\r |
83c093a4 |
1348 | DrawLayer(0|(sh<<1), HighCacheA, 0, maxcells);\r |
cc68a136 |
1349 | DrawAllSprites(HighCacheS, maxw, 0, sh);\r |
1350 | \r |
7a7c6476 |
1351 | if (HighCacheB[0]) DrawTilesFromCache(HighCacheB, sh, 328);\r |
1352 | if (hvwind == 1)\r |
cc68a136 |
1353 | DrawWindow(0, maxcells>>1, 1, sh);\r |
7a7c6476 |
1354 | else if (hvwind == 2) {\r |
83c093a4 |
1355 | if(HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, (win&0x80) ? edge<<4 : 328);\r |
cc68a136 |
1356 | DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 1, sh);\r |
1357 | } else\r |
7a7c6476 |
1358 | if (HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, 328);\r |
cc68a136 |
1359 | DrawAllSprites(HighCacheS, maxw, 1, sh);\r |
1360 | \r |
740da8c6 |
1361 | #if 0\r |
1362 | {\r |
1363 | int *c, a, b;\r |
1364 | for (a = 0, c = HighCacheA; *c; c++, a++);\r |
1365 | for (b = 0, c = HighCacheB; *c; c++, b++);\r |
1366 | printf("%i:%03i: a=%i, b=%i\n", Pico.m.frame_count, Scanline, a, b);\r |
1367 | }\r |
1368 | #endif\r |
1369 | \r |
cc68a136 |
1370 | return 0;\r |
1371 | }\r |
1372 | \r |
1373 | \r |
1374 | static int Skip=0;\r |
1375 | \r |
eff55556 |
1376 | PICO_INTERNAL void PicoFrameStart(void)\r |
cc68a136 |
1377 | {\r |
1378 | // prepare to do this frame\r |
1379 | rendstatus = (PicoOpt&0x80)>>5; // accurate sprites\r |
1380 | if(rendstatus)\r |
1381 | Pico.video.status &= ~0x0020;\r |
1382 | else Pico.video.status |= 0x0020; // sprite collision\r |
1383 | if((Pico.video.reg[12]&6) == 6) rendstatus |= 8; // interlace mode\r |
1384 | if(Pico.m.dirtyPal) Pico.m.dirtyPal = 2; // reset dirty if needed\r |
1385 | \r |
1386 | PrepareSprites(1);\r |
1387 | Skip=0;\r |
1388 | }\r |
1389 | \r |
eff55556 |
1390 | PICO_INTERNAL int PicoLine(int scan)\r |
cc68a136 |
1391 | {\r |
1392 | int sh;\r |
1393 | if (Skip>0) { Skip--; return 0; } // Skip rendering lines\r |
1394 | \r |
1395 | Scanline=scan;\r |
1396 | sh=(Pico.video.reg[0xC]&8)>>3; // shadow/hilight?\r |
1397 | \r |
1398 | // Draw screen:\r |
1399 | BackFill(Pico.video.reg[7], sh);\r |
1400 | if (Pico.video.reg[1]&0x40)\r |
1401 | DrawDisplay(sh);\r |
1402 | \r |
ea8c405f |
1403 | if (FinalizeLine != NULL)\r |
1404 | FinalizeLine(sh);\r |
cc68a136 |
1405 | \r |
1406 | Skip=PicoScan(Scanline,DrawLineDest);\r |
1407 | \r |
1408 | return 0;\r |
1409 | }\r |
1410 | \r |
1411 | \r |
1412 | void PicoDrawSetColorFormat(int which)\r |
1413 | {\r |
ea8c405f |
1414 | switch (which)\r |
1415 | {\r |
1416 | case 2: FinalizeLine = FinalizeLine8bit; break;\r |
1417 | case 1: FinalizeLine = FinalizeLineRGB555; break;\r |
1418 | case 0: FinalizeLine = FinalizeLineBGR444; break;\r |
1419 | default:FinalizeLine = NULL; break;\r |
1420 | }\r |
499a0be3 |
1421 | #if OVERRIDE_HIGHCOL\r |
1422 | if (which) HighCol=DefHighCol;\r |
1423 | #endif\r |
cc68a136 |
1424 | }\r |
ea8c405f |
1425 | \r |