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FAME + some random stuff added
[picodrive.git] / Pico / Draw2.c
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cc68a136 1// This is part of Pico Library\r
2\r
6cadc2da 3// (c) Copyright 2007, Grazvydas "notaz" Ignotas\r
cc68a136 4// Free for non-commercial use.\r
5\r
6// For commercial use, separate licencing terms must be obtained.\r
7\r
8\r
9// this is a frame-based renderer, alternative to Dave's line based which is in Draw.c\r
10\r
11\r
12#include "PicoInt.h"\r
cc68a136 13\r
14// port_config.h include must define these 2 defines:\r
15// #define START_ROW 1 // which row of tiles to start rendering at?\r
16// #define END_ROW 27 // ..end\r
17// one row means 8 pixels. If above example was used, (27-1)*8=208 lines would be rendered.\r
18\r
19#define TILE_ROWS END_ROW-START_ROW\r
20\r
21#define USE_CACHE\r
22\r
23\r
cc68a136 24int currpri = 0;\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
48 for(i=8; i; i--, addr+=2, pd += 320+8) {\r
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
71 for(i=8; i; i--, addr+=2, pd += 320+8) {\r
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
94 for(i=8; i; i--, addr-=2, pd += 320+8) {\r
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
118 for(i=8; i; i--, addr-=2, pd += 320+8) {\r
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
167 scrpos+=8*328+8;\r
168 scrpos+=8*328*(start-START_ROW);\r
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
196 scrpos += 328*8;\r
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
cc68a136 242 scrpos+=8*328*(planestart-START_ROW);\r
243\r
244 // Get vertical scroll value:\r
245 vscroll=Pico.vsram[plane]&0x1ff;\r
246 scrpos+=(8-(vscroll&7))*328;\r
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
281#ifdef USE_CACHE\r
282 if (code>>15) { // high priority tile\r
283 *hcache++ = code|(dx<<16)|(trow<<27); // cache it\r
284#else\r
285 if ((code>>15) != currpri) {\r
286#endif\r
287 continue;\r
288 }\r
289\r
290 // Get tile address/2:\r
291 addr=(code&0x7ff)<<4;\r
292\r
293// pal=PicoCramHigh+((code>>9)&0x30);\r
294 pal=(unsigned char)((code>>9)&0x30);\r
295\r
296 switch((code>>11)&3) {\r
297 case 0: zero=TileXnormYnorm(scrpos+dx,addr,pal); break;\r
298 case 1: zero=TileXflipYnorm(scrpos+dx,addr,pal); break;\r
299 case 2: zero=TileXnormYflip(scrpos+dx,addr,pal); break;\r
300 case 3: zero=TileXflipYflip(scrpos+dx,addr,pal); break;\r
301 }\r
302 if(zero) blank=code; // We know this tile is blank now\r
303 }\r
304\r
305 scrpos += 328*8;\r
306 }\r
307\r
308 *hcache = 0; // terminate cache\r
309}\r
310\r
311\r
312static void DrawTilesFromCacheF(int *hc)\r
313{\r
314 int code, addr, zero = 0;\r
315 unsigned int prevy=0xFFFFFFFF;\r
316// unsigned short *pal;\r
317 unsigned char pal;\r
318 short blank=-1; // The tile we know is blank\r
e5f426aa 319 unsigned char *scrpos = PicoDraw2FB, *pd = 0;\r
cc68a136 320\r
321 // *hcache++ = code|(dx<<16)|(trow<<27); // cache it\r
322 scrpos+=(*hc++)*328 - START_ROW*328*8;\r
323\r
324 while((code=*hc++)) {\r
325 if((short)code == blank) continue;\r
326\r
327 // y pos\r
328 if(((unsigned)code>>27) != prevy) {\r
329 prevy = (unsigned)code>>27;\r
330 pd = scrpos + prevy*328*8;\r
331 }\r
332\r
333 // Get tile address/2:\r
334 addr=(code&0x7ff)<<4;\r
335// pal=PicoCramHigh+((code>>9)&0x30);\r
336 pal=(unsigned char)((code>>9)&0x30);\r
337\r
338 switch((code>>11)&3) {\r
339 case 0: zero=TileXnormYnorm(pd+((code>>16)&0x1ff),addr,pal); break;\r
340 case 1: zero=TileXflipYnorm(pd+((code>>16)&0x1ff),addr,pal); break;\r
341 case 2: zero=TileXnormYflip(pd+((code>>16)&0x1ff),addr,pal); break;\r
342 case 3: zero=TileXflipYflip(pd+((code>>16)&0x1ff),addr,pal); break;\r
343 }\r
344\r
345 if(zero) blank=(short)code;\r
346 }\r
347}\r
348\r
349\r
350// sx and sy are coords of virtual screen with 8pix borders on top and on left\r
351static void DrawSpriteFull(unsigned int *sprite)\r
352{\r
353 int width=0,height=0;\r
354// unsigned short *pal=NULL;\r
355 unsigned char pal;\r
356 int tile,code,tdeltax,tdeltay;\r
357 unsigned char *scrpos;\r
358 int sx, sy;\r
359\r
360 sy=sprite[0];\r
361 height=sy>>24;\r
362 sy=(sy&0x1ff)-0x78; // Y\r
363 width=(height>>2)&3; height&=3;\r
364 width++; height++; // Width and height in tiles\r
365\r
366 code=sprite[1];\r
367 sx=((code>>16)&0x1ff)-0x78; // X\r
368\r
369 tile=code&0x7ff; // Tile number\r
370 tdeltax=height; // Delta to increase tile by going right\r
371 tdeltay=1; // Delta to increase tile by going down\r
372 if (code&0x0800) { tdeltax=-tdeltax; tile+=height*(width-1); } // Flip X\r
373 if (code&0x1000) { tdeltay=-tdeltay; tile+=height-1; } // Flip Y\r
374\r
375 //delta<<=4; // Delta of address\r
376// pal=PicoCramHigh+((code>>9)&0x30); // Get palette pointer\r
377 pal=(unsigned char)((code>>9)&0x30);\r
378\r
379 // goto first vertically visible tile\r
380 while(sy <= START_ROW*8) { sy+=8; tile+=tdeltay; height--; }\r
381\r
e5f426aa 382 scrpos = PicoDraw2FB;\r
cc68a136 383 scrpos+=(sy-START_ROW*8)*328;\r
384\r
385 for (; height > 0; height--, sy+=8, tile+=tdeltay)\r
386 {\r
387 int w = width, x=sx, t=tile;\r
388\r
389 if(sy >= END_ROW*8+8) return; // offscreen\r
390\r
391 for (; w; w--,x+=8,t+=tdeltax)\r
392 {\r
393 if(x<=0) continue;\r
394 if(x>=328) break; // Offscreen\r
395\r
396 t&=0x7fff; // Clip tile address\r
397 switch((code>>11)&3) {\r
398 case 0: TileXnormYnorm(scrpos+x,t<<4,pal); break;\r
399 case 1: TileXflipYnorm(scrpos+x,t<<4,pal); break;\r
400 case 2: TileXnormYflip(scrpos+x,t<<4,pal); break;\r
401 case 3: TileXflipYflip(scrpos+x,t<<4,pal); break;\r
402 }\r
403 }\r
404\r
405 scrpos+=8*328;\r
406 }\r
407}\r
408#endif\r
409\r
410\r
411static void DrawAllSpritesFull(int prio, int maxwidth)\r
412{\r
413 struct PicoVideo *pvid=&Pico.video;\r
414 int table=0,maskrange=0;\r
415 int i,u,link=0;\r
416 unsigned int *sprites[80]; // Sprites\r
417 int y_min=START_ROW*8, y_max=END_ROW*8; // for a simple sprite masking\r
418\r
419 table=pvid->reg[5]&0x7f;\r
420 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode\r
421 table<<=8; // Get sprite table address/2\r
422\r
423 for (i=u=0; u < 80; u++)\r
424 {\r
425 unsigned int *sprite=NULL;\r
426 int code, code2, sx, sy, height;\r
427\r
428 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite\r
429\r
430 // get sprite info\r
431 code = sprite[0];\r
432\r
433 // check if it is not hidden vertically\r
434 sy = (code&0x1ff)-0x80;\r
435 height = (((code>>24)&3)+1)<<3;\r
436 if(sy+height <= y_min || sy > y_max) goto nextsprite;\r
437\r
438 // masking sprite?\r
439 code2=sprite[1];\r
440 sx = (code2>>16)&0x1ff;\r
441 if(!sx) {\r
442 int to = sy+height; // sy ~ from\r
443 if(maskrange) {\r
444 // try to merge with previous range\r
445 if((maskrange>>16)+1 >= sy && (maskrange>>16) <= to && (maskrange&0xffff) < sy) sy = (maskrange&0xffff);\r
446 else if((maskrange&0xffff)-1 <= to && (maskrange&0xffff) >= sy && (maskrange>>16) > to) to = (maskrange>>16);\r
447 }\r
448 // support only very simple masking (top and bottom of screen)\r
449 if(sy <= y_min && to+1 > y_min) y_min = to+1;\r
450 else if(to >= y_max && sy-1 < y_max) y_max = sy-1;\r
451 else maskrange=sy|(to<<16);\r
452\r
453 goto nextsprite;\r
454 }\r
455\r
456 // priority\r
457 if(((code2>>15)&1) != prio) goto nextsprite; // wrong priority\r
458\r
459 // check if sprite is not hidden horizontally\r
460 sx -= 0x78; // Get X coordinate + 8\r
461 if(sx <= -8*3 || sx >= maxwidth) goto nextsprite;\r
462\r
463 // sprite is good, save it's index\r
464 sprites[i++]=sprite;\r
465\r
466 nextsprite:\r
467 // Find next sprite\r
468 link=(code>>16)&0x7f;\r
469 if(!link) break; // End of sprites\r
470 }\r
471\r
472 // Go through sprites backwards:\r
473 for (i-- ;i>=0; i--)\r
474 {\r
475 DrawSpriteFull(sprites[i]);\r
476 }\r
477}\r
478\r
479#ifndef _ASM_DRAW_C\r
480static void BackFillFull(int reg7)\r
481{\r
482 unsigned int back, i;\r
e5f426aa 483 unsigned int *p=(unsigned int *)PicoDraw2FB;\r
cc68a136 484\r
485 // Start with a background color:\r
486// back=PicoCramHigh[reg7&0x3f];\r
487 back=reg7&0x3f;\r
488 back|=back<<8;\r
489 back|=back<<16;\r
490\r
491 for(i = (8+320)*(8+(END_ROW-START_ROW)*8)/16; i; i--) {\r
492 *p++ = back; // do 16 pixels per iteration\r
493 *p++ = back;\r
494 *p++ = back;\r
495 *p++ = back;\r
496 }\r
497}\r
498#endif\r
499\r
500static void DrawDisplayFull()\r
501{\r
502 struct PicoVideo *pvid=&Pico.video;\r
503 int win, edge=0, hvwin=0; // LSb->MSb: hwin&plane, vwin&plane, full\r
504 int planestart=START_ROW, planeend=END_ROW; // plane A start/end when window shares display with plane A (in tile rows or columns)\r
505 int winstart=START_ROW, winend=END_ROW; // same for window\r
506 int maxw, maxcolc; // max width and col cells\r
507\r
508 if(pvid->reg[12]&1) {\r
509 maxw = 328; maxcolc = 40;\r
510 } else {\r
511 maxw = 264; maxcolc = 32;\r
512 }\r
513\r
514 // horizontal window?\r
515 if((win=pvid->reg[0x12])) {\r
516 hvwin=1; // hwindow shares display with plane A\r
517 edge=win&0x1f;\r
518 if(win == 0x80) {\r
519 // fullscreen window\r
520 hvwin=4;\r
521 } else if(win < 0x80) {\r
522 // window on the top\r
523 if(edge <= START_ROW) hvwin=0; // window not visible in our drawing region\r
524 else if(edge >= END_ROW) hvwin=4;\r
525 else planestart = winend = edge;\r
526 } else if(win > 0x80) {\r
527 // window at the bottom\r
528 if(edge >= END_ROW) hvwin=0;\r
529 else planeend = winstart = edge;\r
530 }\r
531 }\r
532\r
533 // check for vertical window, but only if win is not fullscreen\r
534 if(hvwin != 4) {\r
535 win=pvid->reg[0x11];\r
536 edge=win&0x1f;\r
537 if (win&0x80) {\r
538 if(!edge) hvwin=4;\r
539 else if(edge < (maxcolc>>1)) {\r
540 // window is on the right\r
541 hvwin|=2;\r
542 planeend|=edge<<17;\r
543 winstart|=edge<<17;\r
544 winend|=maxcolc<<16;\r
545 }\r
546 } else {\r
547 if(edge >= (maxcolc>>1)) hvwin=4;\r
548 else if(edge) {\r
549 // window is on the left\r
550 hvwin|=2;\r
551 winend|=edge<<17;\r
552 planestart|=edge<<17;\r
553 planeend|=maxcolc<<16;\r
554 }\r
555 }\r
556 }\r
557\r
558 if(hvwin==1) { winend|=maxcolc<<16; planeend|=maxcolc<<16; }\r
559\r
560 currpri = 0;\r
eff55556 561 DrawLayerFull(1, HighCache2B, START_ROW, (maxcolc<<16)|END_ROW);\r
cc68a136 562 switch(hvwin) {\r
563 case 4:\r
564 // fullscreen window\r
565 DrawWindowFull(START_ROW, (maxcolc<<16)|END_ROW, 0);\r
eff55556 566 HighCache2A[1] = 0;\r
cc68a136 567 break;\r
568\r
569 case 3:\r
570 // we have plane A and both v and h windows\r
eff55556 571 DrawLayerFull(0, HighCache2A, planestart, planeend);\r
cc68a136 572 DrawWindowFull( winstart&~0xff0000, (winend&~0xff0000)|(maxcolc<<16), 0); // h\r
573 DrawWindowFull((winstart&~0xff)|START_ROW, (winend&~0xff)|END_ROW, 0); // v\r
574 break;\r
575\r
576 case 2:\r
577 case 1:\r
578 // both window and plane A visible, window is vertical XOR horizontal\r
eff55556 579 DrawLayerFull(0, HighCache2A, planestart, planeend);\r
cc68a136 580 DrawWindowFull(winstart, winend, 0);\r
581 break;\r
582\r
583 default:\r
584 // fullscreen plane A\r
eff55556 585 DrawLayerFull(0, HighCache2A, START_ROW, (maxcolc<<16)|END_ROW);\r
cc68a136 586 break;\r
587 }\r
588 DrawAllSpritesFull(0, maxw);\r
589\r
590#ifdef USE_CACHE\r
eff55556 591 if(HighCache2B[1]) DrawTilesFromCacheF(HighCache2B);\r
592 if(HighCache2A[1]) DrawTilesFromCacheF(HighCache2A);\r
cc68a136 593 switch(hvwin) {\r
594 case 4:\r
595 // fullscreen window\r
596 DrawWindowFull(START_ROW, (maxcolc<<16)|END_ROW, 1);\r
597 break;\r
598\r
599 case 3:\r
600 // we have plane A and both v and h windows\r
601 DrawWindowFull( winstart&~0xff0000, (winend&~0xff0000)|(maxcolc<<16), 1); // h\r
602 DrawWindowFull((winstart&~0xff)|START_ROW, (winend&~0xff)|END_ROW, 1); // v\r
603 break;\r
604\r
605 case 2:\r
606 case 1:\r
607 // both window and plane A visible, window is vertical XOR horizontal\r
608 DrawWindowFull(winstart, winend, 1);\r
609 break;\r
610 }\r
611#else\r
612 currpri = 1;\r
613 // TODO\r
614#endif\r
615 DrawAllSpritesFull(1, maxw);\r
616}\r
617\r
618\r
eff55556 619PICO_INTERNAL void PicoFrameFull()\r
cc68a136 620{\r
621 // prepare cram?\r
622 if(PicoPrepareCram) PicoPrepareCram();\r
623\r
624 // Draw screen:\r
625 BackFillFull(Pico.video.reg[7]);\r
626 if (Pico.video.reg[1]&0x40) DrawDisplayFull();\r
627}\r
628\r
fast MegaDrive/MegaCD/32X emulator