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