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fix clang warnings
[picodrive.git] / pico / draw2.c
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cff531af 1/*\r
2 * tile renderer\r
3 * (C) notaz, 2006-2008\r
4 *\r
5 * This work is licensed under the terms of MAME license.\r
6 * See COPYING file in the top-level directory.\r
7 */\r
cc68a136 8\r
efcba75f 9#include "pico_int.h"\r
cc68a136 10\r
9c9cda8c 11#define START_ROW 0 // which row of tiles to start rendering at?\r
12#define END_ROW 28 // ..end\r
cc68a136 13\r
14#define TILE_ROWS END_ROW-START_ROW\r
15\r
9112b6ce 16// note: this is not implemented in ARM asm\r
17#if defined(DRAW2_OVERRIDE_LINE_WIDTH)\r
18#define LINE_WIDTH DRAW2_OVERRIDE_LINE_WIDTH\r
19#else\r
20#define LINE_WIDTH 328\r
21#endif\r
cc68a136 22\r
41946d70 23static unsigned char PicoDraw2FB_[(8+320) * (8+240+8)];\r
24unsigned char *PicoDraw2FB = PicoDraw2FB_;\r
25\r
eff55556 26static int HighCache2A[41*(TILE_ROWS+1)+1+1]; // caches for high layers\r
27static int HighCache2B[41*(TILE_ROWS+1)+1+1];\r
cc68a136 28\r
29unsigned short *PicoCramHigh=Pico.cram; // pointer to CRAM buff (0x40 shorts), converted to native device color (works only with 16bit for now)\r
30void (*PicoPrepareCram)()=0; // prepares PicoCramHigh for renderer to use\r
31\r
32\r
33// stuff available in asm:\r
34#ifdef _ASM_DRAW_C\r
35void BackFillFull(int reg7);\r
36void DrawLayerFull(int plane, int *hcache, int planestart, int planeend);\r
37void DrawTilesFromCacheF(int *hc);\r
38void DrawWindowFull(int start, int end, int prio);\r
39void DrawSpriteFull(unsigned int *sprite);\r
40#else\r
41\r
42\r
43static int TileXnormYnorm(unsigned char *pd,int addr,unsigned char pal)\r
44{\r
45 unsigned int pack=0; unsigned int t=0, blank = 1;\r
46 int i;\r
47\r
9112b6ce 48 for(i=8; i; i--, addr+=2, pd += LINE_WIDTH) {\r
cc68a136 49 pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
50 if(!pack) continue;\r
51\r
52 t=pack&0x0000f000; if (t) pd[0]=(unsigned char)((t>>12)|pal);\r
53 t=pack&0x00000f00; if (t) pd[1]=(unsigned char)((t>> 8)|pal);\r
54 t=pack&0x000000f0; if (t) pd[2]=(unsigned char)((t>> 4)|pal);\r
55 t=pack&0x0000000f; if (t) pd[3]=(unsigned char)((t )|pal);\r
56 t=pack&0xf0000000; if (t) pd[4]=(unsigned char)((t>>28)|pal);\r
57 t=pack&0x0f000000; if (t) pd[5]=(unsigned char)((t>>24)|pal);\r
58 t=pack&0x00f00000; if (t) pd[6]=(unsigned char)((t>>20)|pal);\r
59 t=pack&0x000f0000; if (t) pd[7]=(unsigned char)((t>>16)|pal);\r
60 blank = 0;\r
61 }\r
62\r
63 return blank; // Tile blank?\r
64}\r
65\r
66static int TileXflipYnorm(unsigned char *pd,int addr,unsigned char pal)\r
67{\r
68 unsigned int pack=0; unsigned int t=0, blank = 1;\r
69 int i;\r
70\r
9112b6ce 71 for(i=8; i; i--, addr+=2, pd += LINE_WIDTH) {\r
cc68a136 72 pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
73 if(!pack) continue;\r
74\r
75 t=pack&0x000f0000; if (t) pd[0]=(unsigned char)((t>>16)|pal);\r
76 t=pack&0x00f00000; if (t) pd[1]=(unsigned char)((t>>20)|pal);\r
77 t=pack&0x0f000000; if (t) pd[2]=(unsigned char)((t>>24)|pal);\r
78 t=pack&0xf0000000; if (t) pd[3]=(unsigned char)((t>>28)|pal);\r
79 t=pack&0x0000000f; if (t) pd[4]=(unsigned char)((t )|pal);\r
80 t=pack&0x000000f0; if (t) pd[5]=(unsigned char)((t>> 4)|pal);\r
81 t=pack&0x00000f00; if (t) pd[6]=(unsigned char)((t>> 8)|pal);\r
82 t=pack&0x0000f000; if (t) pd[7]=(unsigned char)((t>>12)|pal);\r
83 blank = 0;\r
84 }\r
85 return blank; // Tile blank?\r
86}\r
87\r
88static int TileXnormYflip(unsigned char *pd,int addr,unsigned char pal)\r
89{\r
90 unsigned int pack=0; unsigned int t=0, blank = 1;\r
91 int i;\r
92\r
93 addr+=14;\r
9112b6ce 94 for(i=8; i; i--, addr-=2, pd += LINE_WIDTH) {\r
cc68a136 95 pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
96 if(!pack) continue;\r
97\r
98 t=pack&0x0000f000; if (t) pd[0]=(unsigned char)((t>>12)|pal);\r
99 t=pack&0x00000f00; if (t) pd[1]=(unsigned char)((t>> 8)|pal);\r
100 t=pack&0x000000f0; if (t) pd[2]=(unsigned char)((t>> 4)|pal);\r
101 t=pack&0x0000000f; if (t) pd[3]=(unsigned char)((t )|pal);\r
102 t=pack&0xf0000000; if (t) pd[4]=(unsigned char)((t>>28)|pal);\r
103 t=pack&0x0f000000; if (t) pd[5]=(unsigned char)((t>>24)|pal);\r
104 t=pack&0x00f00000; if (t) pd[6]=(unsigned char)((t>>20)|pal);\r
105 t=pack&0x000f0000; if (t) pd[7]=(unsigned char)((t>>16)|pal);\r
106 blank = 0;\r
107 }\r
108\r
109 return blank; // Tile blank?\r
110}\r
111\r
112static int TileXflipYflip(unsigned char *pd,int addr,unsigned char pal)\r
113{\r
114 unsigned int pack=0; unsigned int t=0, blank = 1;\r
115 int i;\r
116\r
117 addr+=14;\r
9112b6ce 118 for(i=8; i; i--, addr-=2, pd += LINE_WIDTH) {\r
cc68a136 119 pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
120 if(!pack) continue;\r
121\r
122 t=pack&0x000f0000; if (t) pd[0]=(unsigned char)((t>>16)|pal);\r
123 t=pack&0x00f00000; if (t) pd[1]=(unsigned char)((t>>20)|pal);\r
124 t=pack&0x0f000000; if (t) pd[2]=(unsigned char)((t>>24)|pal);\r
125 t=pack&0xf0000000; if (t) pd[3]=(unsigned char)((t>>28)|pal);\r
126 t=pack&0x0000000f; if (t) pd[4]=(unsigned char)((t )|pal);\r
127 t=pack&0x000000f0; if (t) pd[5]=(unsigned char)((t>> 4)|pal);\r
128 t=pack&0x00000f00; if (t) pd[6]=(unsigned char)((t>> 8)|pal);\r
129 t=pack&0x0000f000; if (t) pd[7]=(unsigned char)((t>>12)|pal);\r
130 blank = 0;\r
131 }\r
132 return blank; // Tile blank?\r
133}\r
134\r
135\r
136// start: (tile_start<<16)|row_start, end: [same]\r
137static void DrawWindowFull(int start, int end, int prio)\r
138{\r
139 struct PicoVideo *pvid=&Pico.video;\r
140 int nametab, nametab_step, trow, tilex, blank=-1, code;\r
e5f426aa 141 unsigned char *scrpos = PicoDraw2FB;\r
cc68a136 142 int tile_start, tile_end; // in cells\r
143\r
144 // parse ranges\r
145 tile_start = start>>16;\r
146 tile_end = end>>16;\r
147 start = start<<16>>16;\r
148 end = end<<16>>16;\r
149\r
150 // Find name table line:\r
151 if (pvid->reg[12]&1)\r
152 {\r
153 nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode\r
154 nametab_step = 1<<6;\r
155 }\r
156 else\r
157 {\r
158 nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode\r
159 nametab_step = 1<<5;\r
160 }\r
161 nametab += nametab_step*start;\r
162\r
163 // check priority\r
164 code=Pico.vram[nametab+tile_start];\r
165 if ((code>>15) != prio) return; // hack: just assume that whole window uses same priority\r
166\r
9112b6ce 167 scrpos+=8*LINE_WIDTH+8;\r
168 scrpos+=8*LINE_WIDTH*(start-START_ROW);\r
cc68a136 169\r
170 // do a window until we reach planestart row\r
171 for(trow = start; trow < end; trow++, nametab+=nametab_step) { // current tile row\r
172 for (tilex=tile_start; tilex<tile_end; tilex++)\r
173 {\r
174 int code,addr,zero=0;\r
175// unsigned short *pal=NULL;\r
176 unsigned char pal;\r
177\r
178 code=Pico.vram[nametab+tilex];\r
179 if (code==blank) continue;\r
180\r
181 // Get tile address/2:\r
182 addr=(code&0x7ff)<<4;\r
183\r
184// pal=PicoCramHigh+((code>>9)&0x30);\r
185 pal=(unsigned char)((code>>9)&0x30);\r
186\r
187 switch((code>>11)&3) {\r
188 case 0: zero=TileXnormYnorm(scrpos+(tilex<<3),addr,pal); break;\r
189 case 1: zero=TileXflipYnorm(scrpos+(tilex<<3),addr,pal); break;\r
190 case 2: zero=TileXnormYflip(scrpos+(tilex<<3),addr,pal); break;\r
191 case 3: zero=TileXflipYflip(scrpos+(tilex<<3),addr,pal); break;\r
192 }\r
193 if(zero) blank=code; // We know this tile is blank now\r
194 }\r
195\r
9112b6ce 196 scrpos += LINE_WIDTH*8;\r
cc68a136 197 }\r
198}\r
199\r
200\r
201static void DrawLayerFull(int plane, int *hcache, int planestart, int planeend)\r
202{\r
203 struct PicoVideo *pvid=&Pico.video;\r
204 static char shift[4]={5,6,6,7}; // 32,64 or 128 sized tilemaps\r
205 int width, height, ymask, htab;\r
206 int nametab, hscroll=0, vscroll, cells;\r
207 unsigned char *scrpos;\r
208 int blank=-1, xmask, nametab_row, trow;\r
209\r
210 // parse ranges\r
211 cells = (planeend>>16)-(planestart>>16);\r
212 planestart = planestart<<16>>16;\r
213 planeend = planeend<<16>>16;\r
214\r
215 // Work out the Tiles to draw\r
216\r
217 htab=pvid->reg[13]<<9; // Horizontal scroll table address\r
218// if ( pvid->reg[11]&2) htab+=Scanline<<1; // Offset by line\r
219// if ((pvid->reg[11]&1)==0) htab&=~0xf; // Offset by tile\r
220 htab+=plane; // A or B\r
221\r
222 if(!(pvid->reg[11]&3)) { // full screen scroll\r
223 // Get horizontal scroll value\r
224 hscroll=Pico.vram[htab&0x7fff];\r
225 htab = 0; // this marks that we don't have to update scroll value\r
226 }\r
227\r
228 // Work out the name table size: 32 64 or 128 tiles (0-3)\r
229 width=pvid->reg[16];\r
230 height=(width>>4)&3; width&=3;\r
231\r
232 xmask=(1<<shift[width ])-1; // X Mask in tiles\r
eff55556 233 ymask=(height<<5)|0x1f; // Y Mask in tiles\r
234 if(width == 1) ymask&=0x3f;\r
235 else if(width>1) ymask =0x1f;\r
cc68a136 236\r
237 // Find name table:\r
238 if (plane==0) nametab=(pvid->reg[2]&0x38)<< 9; // A\r
239 else nametab=(pvid->reg[4]&0x07)<<12; // B\r
240\r
e5f426aa 241 scrpos = PicoDraw2FB;\r
9112b6ce 242 scrpos+=8*LINE_WIDTH*(planestart-START_ROW);\r
cc68a136 243\r
244 // Get vertical scroll value:\r
245 vscroll=Pico.vsram[plane]&0x1ff;\r
9112b6ce 246 scrpos+=(8-(vscroll&7))*LINE_WIDTH;\r
cc68a136 247 if(vscroll&7) planeend++; // we have vertically clipped tiles due to vscroll, so we need 1 more row\r
248\r
249 *hcache++ = 8-(vscroll&7); // push y-offset to tilecache\r
250\r
251\r
252 for(trow = planestart; trow < planeend; trow++) { // current tile row\r
253 int cellc=cells,tilex,dx;\r
254\r
255 // Find the tile row in the name table\r
256 //ts.line=(vscroll+Scanline)&ymask;\r
257 //ts.nametab+=(ts.line>>3)<<shift[width];\r
258 nametab_row = nametab + (((trow+(vscroll>>3))&ymask)<<shift[width]); // pointer to nametable entries for this row\r
259\r
260 // update hscroll if needed\r
261 if(htab) {\r
262 int htaddr=htab+(trow<<4);\r
263 if(trow) htaddr-=(vscroll&7)<<1;\r
264 hscroll=Pico.vram[htaddr&0x7fff];\r
265 }\r
266\r
267 // Draw tiles across screen:\r
268 tilex=(-hscroll)>>3;\r
269 dx=((hscroll-1)&7)+1;\r
270 if(dx != 8) cellc++; // have hscroll, do more cells\r
271\r
272 for (; cellc; dx+=8,tilex++,cellc--)\r
273 {\r
274 int code=0,addr=0,zero=0;\r
275// unsigned short *pal=NULL;\r
276 unsigned char pal;\r
277\r
278 code=Pico.vram[nametab_row+(tilex&xmask)];\r
279 if (code==blank) continue;\r
280\r
cc68a136 281 if (code>>15) { // high priority tile\r
282 *hcache++ = code|(dx<<16)|(trow<<27); // cache it\r
cc68a136 283 continue;\r
284 }\r
285\r
286 // Get tile address/2:\r
287 addr=(code&0x7ff)<<4;\r
288\r
289// pal=PicoCramHigh+((code>>9)&0x30);\r
290 pal=(unsigned char)((code>>9)&0x30);\r
291\r
292 switch((code>>11)&3) {\r
293 case 0: zero=TileXnormYnorm(scrpos+dx,addr,pal); break;\r
294 case 1: zero=TileXflipYnorm(scrpos+dx,addr,pal); break;\r
295 case 2: zero=TileXnormYflip(scrpos+dx,addr,pal); break;\r
296 case 3: zero=TileXflipYflip(scrpos+dx,addr,pal); break;\r
297 }\r
298 if(zero) blank=code; // We know this tile is blank now\r
299 }\r
300\r
9112b6ce 301 scrpos += LINE_WIDTH*8;\r
cc68a136 302 }\r
303\r
304 *hcache = 0; // terminate cache\r
305}\r
306\r
307\r
308static void DrawTilesFromCacheF(int *hc)\r
309{\r
310 int code, addr, zero = 0;\r
311 unsigned int prevy=0xFFFFFFFF;\r
312// unsigned short *pal;\r
313 unsigned char pal;\r
314 short blank=-1; // The tile we know is blank\r
e5f426aa 315 unsigned char *scrpos = PicoDraw2FB, *pd = 0;\r
cc68a136 316\r
317 // *hcache++ = code|(dx<<16)|(trow<<27); // cache it\r
9112b6ce 318 scrpos+=(*hc++)*LINE_WIDTH - START_ROW*LINE_WIDTH*8;\r
cc68a136 319\r
320 while((code=*hc++)) {\r
321 if((short)code == blank) continue;\r
322\r
323 // y pos\r
324 if(((unsigned)code>>27) != prevy) {\r
325 prevy = (unsigned)code>>27;\r
9112b6ce 326 pd = scrpos + prevy*LINE_WIDTH*8;\r
cc68a136 327 }\r
328\r
329 // Get tile address/2:\r
330 addr=(code&0x7ff)<<4;\r
331// pal=PicoCramHigh+((code>>9)&0x30);\r
332 pal=(unsigned char)((code>>9)&0x30);\r
333\r
334 switch((code>>11)&3) {\r
335 case 0: zero=TileXnormYnorm(pd+((code>>16)&0x1ff),addr,pal); break;\r
336 case 1: zero=TileXflipYnorm(pd+((code>>16)&0x1ff),addr,pal); break;\r
337 case 2: zero=TileXnormYflip(pd+((code>>16)&0x1ff),addr,pal); break;\r
338 case 3: zero=TileXflipYflip(pd+((code>>16)&0x1ff),addr,pal); break;\r
339 }\r
340\r
341 if(zero) blank=(short)code;\r
342 }\r
343}\r
344\r
345\r
346// sx and sy are coords of virtual screen with 8pix borders on top and on left\r
347static void DrawSpriteFull(unsigned int *sprite)\r
348{\r
349 int width=0,height=0;\r
350// unsigned short *pal=NULL;\r
351 unsigned char pal;\r
352 int tile,code,tdeltax,tdeltay;\r
353 unsigned char *scrpos;\r
354 int sx, sy;\r
355\r
356 sy=sprite[0];\r
357 height=sy>>24;\r
358 sy=(sy&0x1ff)-0x78; // Y\r
359 width=(height>>2)&3; height&=3;\r
360 width++; height++; // Width and height in tiles\r
361\r
362 code=sprite[1];\r
363 sx=((code>>16)&0x1ff)-0x78; // X\r
364\r
365 tile=code&0x7ff; // Tile number\r
366 tdeltax=height; // Delta to increase tile by going right\r
367 tdeltay=1; // Delta to increase tile by going down\r
368 if (code&0x0800) { tdeltax=-tdeltax; tile+=height*(width-1); } // Flip X\r
369 if (code&0x1000) { tdeltay=-tdeltay; tile+=height-1; } // Flip Y\r
370\r
371 //delta<<=4; // Delta of address\r
372// pal=PicoCramHigh+((code>>9)&0x30); // Get palette pointer\r
373 pal=(unsigned char)((code>>9)&0x30);\r
374\r
375 // goto first vertically visible tile\r
376 while(sy <= START_ROW*8) { sy+=8; tile+=tdeltay; height--; }\r
377\r
e5f426aa 378 scrpos = PicoDraw2FB;\r
9112b6ce 379 scrpos+=(sy-START_ROW*8)*LINE_WIDTH;\r
cc68a136 380\r
381 for (; height > 0; height--, sy+=8, tile+=tdeltay)\r
382 {\r
383 int w = width, x=sx, t=tile;\r
384\r
385 if(sy >= END_ROW*8+8) return; // offscreen\r
386\r
387 for (; w; w--,x+=8,t+=tdeltax)\r
388 {\r
389 if(x<=0) continue;\r
390 if(x>=328) break; // Offscreen\r
391\r
392 t&=0x7fff; // Clip tile address\r
393 switch((code>>11)&3) {\r
394 case 0: TileXnormYnorm(scrpos+x,t<<4,pal); break;\r
395 case 1: TileXflipYnorm(scrpos+x,t<<4,pal); break;\r
396 case 2: TileXnormYflip(scrpos+x,t<<4,pal); break;\r
397 case 3: TileXflipYflip(scrpos+x,t<<4,pal); break;\r
398 }\r
399 }\r
400\r
9112b6ce 401 scrpos+=8*LINE_WIDTH;\r
cc68a136 402 }\r
403}\r
404#endif\r
405\r
406\r
407static void DrawAllSpritesFull(int prio, int maxwidth)\r
408{\r
409 struct PicoVideo *pvid=&Pico.video;\r
410 int table=0,maskrange=0;\r
411 int i,u,link=0;\r
412 unsigned int *sprites[80]; // Sprites\r
413 int y_min=START_ROW*8, y_max=END_ROW*8; // for a simple sprite masking\r
414\r
415 table=pvid->reg[5]&0x7f;\r
416 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode\r
417 table<<=8; // Get sprite table address/2\r
418\r
419 for (i=u=0; u < 80; u++)\r
420 {\r
421 unsigned int *sprite=NULL;\r
422 int code, code2, sx, sy, height;\r
423\r
424 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite\r
425\r
426 // get sprite info\r
427 code = sprite[0];\r
428\r
429 // check if it is not hidden vertically\r
430 sy = (code&0x1ff)-0x80;\r
431 height = (((code>>24)&3)+1)<<3;\r
432 if(sy+height <= y_min || sy > y_max) goto nextsprite;\r
433\r
434 // masking sprite?\r
435 code2=sprite[1];\r
436 sx = (code2>>16)&0x1ff;\r
437 if(!sx) {\r
438 int to = sy+height; // sy ~ from\r
439 if(maskrange) {\r
440 // try to merge with previous range\r
441 if((maskrange>>16)+1 >= sy && (maskrange>>16) <= to && (maskrange&0xffff) < sy) sy = (maskrange&0xffff);\r
442 else if((maskrange&0xffff)-1 <= to && (maskrange&0xffff) >= sy && (maskrange>>16) > to) to = (maskrange>>16);\r
443 }\r
444 // support only very simple masking (top and bottom of screen)\r
445 if(sy <= y_min && to+1 > y_min) y_min = to+1;\r
446 else if(to >= y_max && sy-1 < y_max) y_max = sy-1;\r
447 else maskrange=sy|(to<<16);\r
448\r
449 goto nextsprite;\r
450 }\r
451\r
452 // priority\r
453 if(((code2>>15)&1) != prio) goto nextsprite; // wrong priority\r
454\r
455 // check if sprite is not hidden horizontally\r
456 sx -= 0x78; // Get X coordinate + 8\r
457 if(sx <= -8*3 || sx >= maxwidth) goto nextsprite;\r
458\r
459 // sprite is good, save it's index\r
460 sprites[i++]=sprite;\r
461\r
462 nextsprite:\r
463 // Find next sprite\r
464 link=(code>>16)&0x7f;\r
465 if(!link) break; // End of sprites\r
466 }\r
467\r
468 // Go through sprites backwards:\r
469 for (i-- ;i>=0; i--)\r
470 {\r
471 DrawSpriteFull(sprites[i]);\r
472 }\r
473}\r
474\r
475#ifndef _ASM_DRAW_C\r
476static void BackFillFull(int reg7)\r
477{\r
b542be46 478 unsigned int back;\r
cc68a136 479\r
480 // Start with a background color:\r
481// back=PicoCramHigh[reg7&0x3f];\r
482 back=reg7&0x3f;\r
483 back|=back<<8;\r
484 back|=back<<16;\r
485\r
b542be46 486 memset32((int *)PicoDraw2FB, back, LINE_WIDTH*(8+(END_ROW-START_ROW)*8)/4);\r
cc68a136 487}\r
488#endif\r
489\r
f579f7b8 490static void DrawDisplayFull(void)\r
cc68a136 491{\r
492 struct PicoVideo *pvid=&Pico.video;\r
493 int win, edge=0, hvwin=0; // LSb->MSb: hwin&plane, vwin&plane, full\r
494 int planestart=START_ROW, planeend=END_ROW; // plane A start/end when window shares display with plane A (in tile rows or columns)\r
495 int winstart=START_ROW, winend=END_ROW; // same for window\r
496 int maxw, maxcolc; // max width and col cells\r
497\r
498 if(pvid->reg[12]&1) {\r
499 maxw = 328; maxcolc = 40;\r
500 } else {\r
501 maxw = 264; maxcolc = 32;\r
502 }\r
503\r
504 // horizontal window?\r
f579f7b8 505 if ((win=pvid->reg[0x12]))\r
506 {\r
cc68a136 507 hvwin=1; // hwindow shares display with plane A\r
508 edge=win&0x1f;\r
509 if(win == 0x80) {\r
510 // fullscreen window\r
511 hvwin=4;\r
512 } else if(win < 0x80) {\r
513 // window on the top\r
514 if(edge <= START_ROW) hvwin=0; // window not visible in our drawing region\r
515 else if(edge >= END_ROW) hvwin=4;\r
516 else planestart = winend = edge;\r
517 } else if(win > 0x80) {\r
518 // window at the bottom\r
519 if(edge >= END_ROW) hvwin=0;\r
520 else planeend = winstart = edge;\r
521 }\r
522 }\r
523\r
524 // check for vertical window, but only if win is not fullscreen\r
f579f7b8 525 if (hvwin != 4)\r
526 {\r
cc68a136 527 win=pvid->reg[0x11];\r
528 edge=win&0x1f;\r
529 if (win&0x80) {\r
530 if(!edge) hvwin=4;\r
531 else if(edge < (maxcolc>>1)) {\r
532 // window is on the right\r
533 hvwin|=2;\r
534 planeend|=edge<<17;\r
535 winstart|=edge<<17;\r
536 winend|=maxcolc<<16;\r
537 }\r
538 } else {\r
539 if(edge >= (maxcolc>>1)) hvwin=4;\r
540 else if(edge) {\r
541 // window is on the left\r
542 hvwin|=2;\r
543 winend|=edge<<17;\r
544 planestart|=edge<<17;\r
545 planeend|=maxcolc<<16;\r
546 }\r
547 }\r
548 }\r
549\r
f579f7b8 550 if (hvwin==1) { winend|=maxcolc<<16; planeend|=maxcolc<<16; }\r
cc68a136 551\r
f579f7b8 552 HighCache2A[1] = HighCache2B[1] = 0;\r
553 if (PicoDrawMask & PDRAW_LAYERB_ON)\r
554 DrawLayerFull(1, HighCache2B, START_ROW, (maxcolc<<16)|END_ROW);\r
555 if (PicoDrawMask & PDRAW_LAYERA_ON) switch (hvwin)\r
556 {\r
cc68a136 557 case 4:\r
558 // fullscreen window\r
559 DrawWindowFull(START_ROW, (maxcolc<<16)|END_ROW, 0);\r
cc68a136 560 break;\r
561\r
562 case 3:\r
563 // we have plane A and both v and h windows\r
eff55556 564 DrawLayerFull(0, HighCache2A, planestart, planeend);\r
cc68a136 565 DrawWindowFull( winstart&~0xff0000, (winend&~0xff0000)|(maxcolc<<16), 0); // h\r
566 DrawWindowFull((winstart&~0xff)|START_ROW, (winend&~0xff)|END_ROW, 0); // v\r
567 break;\r
568\r
569 case 2:\r
570 case 1:\r
571 // both window and plane A visible, window is vertical XOR horizontal\r
eff55556 572 DrawLayerFull(0, HighCache2A, planestart, planeend);\r
cc68a136 573 DrawWindowFull(winstart, winend, 0);\r
574 break;\r
575\r
576 default:\r
577 // fullscreen plane A\r
eff55556 578 DrawLayerFull(0, HighCache2A, START_ROW, (maxcolc<<16)|END_ROW);\r
cc68a136 579 break;\r
580 }\r
f579f7b8 581 if (PicoDrawMask & PDRAW_SPRITES_LOW_ON)\r
582 DrawAllSpritesFull(0, maxw);\r
cc68a136 583\r
f579f7b8 584 if (HighCache2B[1]) DrawTilesFromCacheF(HighCache2B);\r
585 if (HighCache2A[1]) DrawTilesFromCacheF(HighCache2A);\r
8cf22667 586 if (PicoDrawMask & PDRAW_LAYERA_ON) switch (hvwin)\r
f579f7b8 587 {\r
cc68a136 588 case 4:\r
589 // fullscreen window\r
590 DrawWindowFull(START_ROW, (maxcolc<<16)|END_ROW, 1);\r
591 break;\r
592\r
593 case 3:\r
594 // we have plane A and both v and h windows\r
595 DrawWindowFull( winstart&~0xff0000, (winend&~0xff0000)|(maxcolc<<16), 1); // h\r
596 DrawWindowFull((winstart&~0xff)|START_ROW, (winend&~0xff)|END_ROW, 1); // v\r
597 break;\r
598\r
599 case 2:\r
600 case 1:\r
601 // both window and plane A visible, window is vertical XOR horizontal\r
602 DrawWindowFull(winstart, winend, 1);\r
603 break;\r
604 }\r
f579f7b8 605 if (PicoDrawMask & PDRAW_SPRITES_HI_ON)\r
606 DrawAllSpritesFull(1, maxw);\r
cc68a136 607}\r
608\r
609\r
eff55556 610PICO_INTERNAL void PicoFrameFull()\r
cc68a136 611{\r
25eb407c 612 pprof_start(draw);\r
613\r
cc68a136 614 // prepare cram?\r
f579f7b8 615 if (PicoPrepareCram) PicoPrepareCram();\r
cc68a136 616\r
617 // Draw screen:\r
618 BackFillFull(Pico.video.reg[7]);\r
25eb407c 619 if (Pico.video.reg[1] & 0x40)\r
620 DrawDisplayFull();\r
621\r
622 pprof_end(draw);\r
cc68a136 623}\r
624\r
fast MegaDrive/MegaCD/32X emulator