pico/draw2.c

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