reactos/subsys/win32k/dib/dib24bpp.c

   1 /*
   2  *  ReactOS W32 Subsystem
   3  *  Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /* $Id$ */
  20
  21 #include <w32k.h>
  22
  23 #define NDEBUG
  24 #include <debug.h>
  25
  26 VOID
  27 DIB_24BPP_PutPixel(SURFOBJ *SurfObj, LONG x, LONG y, ULONG c)
  28 {
  29   PBYTE addr = (PBYTE)SurfObj->pvScan0 + (y * SurfObj->lDelta) + (x << 1) + x;
  30   *(PUSHORT)(addr) = c & 0xFFFF;
  31   *(addr + 2) = (c >> 16) & 0xFF;
  32 }
  33
  34 ULONG
  35 DIB_24BPP_GetPixel(SURFOBJ *SurfObj, LONG x, LONG y)
  36 {
  37   PBYTE addr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta + (x << 1) + x;
  38   return *(PUSHORT)(addr) + (*(addr + 2) << 16);
  39 }
  40
  41 VOID
  42 DIB_24BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
  43 {
  44   PBYTE addr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta + (x1 << 1) + x1;
  45   ULONG Count = x2 - x1;
  46 #ifndef _M_IX86
  47   ULONG MultiCount;
  48   ULONG Fill[3];
  49 #endif
  50
  51   if (Count < 8)
  52     {
  53       /* For small fills, don't bother doing anything fancy */
  54       while (Count--)
  55         {
  56           *(PUSHORT)(addr) = c;
  57           addr += 2;
  58           *(addr) = c >> 16;
  59           addr += 1;
  60         }
  61     }
  62   else
  63     {
  64       /* Align to 4-byte address */
  65       while (0 != ((ULONG_PTR) addr & 0x3))
  66         {
  67           *(PUSHORT)(addr) = c;
  68           addr += 2;
  69           *(addr) = c >> 16;
  70           addr += 1;
  71           Count--;
  72         }
  73       /* If the color we need to fill with is 0ABC, then the final mem pattern
  74        * (note little-endianness) would be:
  75        *
  76        * |C.B.A|C.B.A|C.B.A|C.B.A|   <- pixel borders
  77        * |C.B.A.C|B.A.C.B|A.C.B.A|   <- ULONG borders
  78        *
  79        * So, taking endianness into account again, we need to fill with these
  80        * ULONGs: CABC BCAB ABCA */
  81 #ifdef _M_IX86
  82        /* This is about 30% faster than the generic C code below */
  83        __asm__ __volatile__ (
  84 "      movl %1, %%ecx\n"
  85 "      andl $0xffffff, %%ecx\n"         /* 0ABC */
  86 "      movl %%ecx, %%ebx\n"             /* Construct BCAB in ebx */
  87 "      shrl $8, %%ebx\n"
  88 "      movl %%ecx, %%eax\n"
  89 "      shll $16, %%eax\n"
  90 "      orl  %%eax, %%ebx\n"
  91 "      movl %%ecx, %%edx\n"             /* Construct ABCA in edx */
  92 "      shll $8, %%edx\n"
  93 "      movl %%ecx, %%eax\n"
  94 "      shrl $16, %%eax\n"
  95 "      orl  %%eax, %%edx\n"
  96 "      movl %%ecx, %%eax\n"             /* Construct CABC in eax */
  97 "      shll $24, %%eax\n"
  98 "      orl  %%ecx, %%eax\n"
  99 "      movl %2, %%ecx\n"                /* Load count */
 100 "      shr  $2, %%ecx\n"
 101 "      movl %3, %%edi\n"                /* Load dest */
 102 "0:\n"
 103 "      movl %%eax, (%%edi)\n"           /* Store 4 pixels, 12 bytes */
 104 "      movl %%ebx, 4(%%edi)\n"
 105 "      movl %%edx, 8(%%edi)\n"
 106 "      addl $12, %%edi\n"
 107 "      dec  %%ecx\n"
 108 "      jnz  0b\n"
 109 "      movl %%edi, %0\n"
 110   : "=m"(addr)
 111   : "m"(c), "m"(Count), "m"(addr)
 112   : "%eax", "%ebx", "%ecx", "%edx", "%edi");
 113 #else
 114       c = c & 0xffffff;                /* 0ABC */
 115       Fill[0] = c | (c << 24);         /* CABC */
 116       Fill[1] = (c >> 8) | (c << 16);  /* BCAB */
 117       Fill[2] = (c << 8) | (c >> 16);  /* ABCA */
 118       MultiCount = Count / 4;
 119       do
 120         {
 121           *(PULONG)addr = Fill[0];
 122           addr += 4;
 123           *(PULONG)addr = Fill[1];
 124           addr += 4;
 125           *(PULONG)addr = Fill[2];
 126           addr += 4;
 127         }
 128       while (0 != --MultiCount);
 129 #endif
 130       Count = Count & 0x03;
 131       while (0 != Count--)
 132         {
 133           *(PUSHORT)(addr) = c;
 134           addr += 2;
 135           *(addr) = c >> 16;
 136           addr += 1;
 137         }
 138     }
 139 }
 140
 141 VOID
 142 DIB_24BPP_VLine(SURFOBJ *SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
 143 {
 144   PBYTE addr = (PBYTE)SurfObj->pvScan0 + y1 * SurfObj->lDelta + (x << 1) + x;
 145   LONG lDelta = SurfObj->lDelta;
 146
 147   c &= 0xFFFFFF;
 148   while(y1++ < y2) {
 149     *(PUSHORT)(addr) = c & 0xFFFF;
 150     *(addr + 2) = c >> 16;
 151
 152     addr += lDelta;
 153   }
 154 }
 155
 156 BOOLEAN
 157 DIB_24BPP_BitBltSrcCopy(PBLTINFO BltInfo)
 158 {
 159   LONG     i, j, sx, sy, xColor, f1;
 160   PBYTE    SourceBits, DestBits, SourceLine, DestLine;
 161   PBYTE    SourceBits_4BPP, SourceLine_4BPP;
 162   PWORD    SourceBits_16BPP, SourceLine_16BPP;
 163
 164   DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + (BltInfo->DestRect.top * BltInfo->DestSurface->lDelta) + BltInfo->DestRect.left * 3;
 165
 166   switch(BltInfo->SourceSurface->iBitmapFormat)
 167   {
 168     case BMF_1BPP:
 169       sx = BltInfo->SourcePoint.x;
 170       sy = BltInfo->SourcePoint.y;
 171
 172       for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
 173       {
 174         sx = BltInfo->SourcePoint.x;
 175         for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
 176         {
 177           if(DIB_1BPP_GetPixel(BltInfo->SourceSurface, sx, sy) == 0)
 178           {
 179             DIB_24BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 0));
 180           } else {
 181             DIB_24BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 1));
 182           }
 183           sx++;
 184         }
 185         sy++;
 186       }
 187       break;
 188
 189     case BMF_4BPP:
 190       SourceBits_4BPP = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + (BltInfo->SourcePoint.x >> 1);
 191
 192       for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
 193       {
 194         SourceLine_4BPP = SourceBits_4BPP;
 195         DestLine = DestBits;
 196         sx = BltInfo->SourcePoint.x;
 197         f1 = sx & 1;
 198
 199         for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
 200         {
 201           xColor = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest,
 202               (*SourceLine_4BPP & altnotmask[f1]) >> (4 * (1 - f1)));
 203           *DestLine++ = xColor & 0xff;
 204           *(PWORD)DestLine = xColor >> 8;
 205           DestLine += 2;
 206           if(f1 == 1) { SourceLine_4BPP++; f1 = 0; } else { f1 = 1; }
 207           sx++;
 208         }
 209
 210         SourceBits_4BPP += BltInfo->SourceSurface->lDelta;
 211         DestBits += BltInfo->DestSurface->lDelta;
 212       }
 213       break;
 214
 215     case BMF_8BPP:
 216       SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + BltInfo->SourcePoint.x;
 217       DestLine = DestBits;
 218
 219       for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
 220       {
 221         SourceBits = SourceLine;
 222         DestBits = DestLine;
 223
 224         for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
 225         {
 226           xColor = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *SourceBits);
 227           *DestBits = xColor & 0xff;
 228           *(PWORD)(DestBits + 1) = xColor >> 8;
 229           SourceBits += 1;
 230           DestBits += 3;
 231         }
 232
 233         SourceLine += BltInfo->SourceSurface->lDelta;
 234         DestLine += BltInfo->DestSurface->lDelta;
 235       }
 236       break;
 237
 238     case BMF_16BPP:
 239       SourceBits_16BPP = (PWORD)((PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 2 * BltInfo->SourcePoint.x);
 240
 241       for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
 242       {
 243         SourceLine_16BPP = SourceBits_16BPP;
 244         DestLine = DestBits;
 245
 246         for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
 247         {
 248           xColor = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *SourceLine_16BPP);
 249           *DestLine++ = xColor & 0xff;
 250           *(PWORD)DestLine = xColor >> 8;
 251           DestLine += 2;
 252           SourceLine_16BPP++;
 253         }
 254
 255         SourceBits_16BPP = (PWORD)((PBYTE)SourceBits_16BPP + BltInfo->SourceSurface->lDelta);
 256         DestBits += BltInfo->DestSurface->lDelta;
 257       }
 258       break;
 259
 260     case BMF_24BPP:
 261       if (NULL == BltInfo->XlateSourceToDest || 0 != (BltInfo->XlateSourceToDest->flXlate & XO_TRIVIAL))
 262       {
 263         if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
 264           {
 265             SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 3 * BltInfo->SourcePoint.x;
 266             for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
 267               {
 268                 RtlMoveMemory(DestBits, SourceBits, 3 * (BltInfo->DestRect.right - BltInfo->DestRect.left));
 269                 SourceBits += BltInfo->SourceSurface->lDelta;
 270                 DestBits += BltInfo->DestSurface->lDelta;
 271               }
 272           }
 273         else
 274           {
 275             SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 + ((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1) * BltInfo->SourceSurface->lDelta) + 3 * BltInfo->SourcePoint.x;
 276             DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta) + 3 * BltInfo->DestRect.left;
 277             for (j = BltInfo->DestRect.bottom - 1; BltInfo->DestRect.top <= j; j--)
 278               {
 279                 RtlMoveMemory(DestBits, SourceBits, 3 * (BltInfo->DestRect.right - BltInfo->DestRect.left));
 280                 SourceBits -= BltInfo->SourceSurface->lDelta;
 281                 DestBits -= BltInfo->DestSurface->lDelta;
 282               }
 283           }
 284       }
 285       else
 286       {
 287         /* FIXME */
 288         DPRINT1("DIB_24BPP_Bitblt: Unhandled BltInfo->XlateSourceToDest for 16 -> 16 copy\n");
 289         return FALSE;
 290       }
 291       break;
 292
 293     case BMF_32BPP:
 294       SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 4 * BltInfo->SourcePoint.x;
 295       DestLine = DestBits;
 296
 297       for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
 298       {
 299         SourceBits = SourceLine;
 300         DestBits = DestLine;
 301
 302         for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
 303         {
 304           xColor = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *((PDWORD) SourceBits));
 305           *DestBits = xColor & 0xff;
 306           *(PWORD)(DestBits + 1) = xColor >> 8;
 307           SourceBits += 4;
 308           DestBits += 3;
 309         }
 310
 311         SourceLine += BltInfo->SourceSurface->lDelta;
 312         DestLine += BltInfo->DestSurface->lDelta;
 313       }
 314       break;
 315
 316     default:
 317       DbgPrint("DIB_24BPP_Bitblt: Unhandled Source BPP: %u\n", BitsPerFormat(BltInfo->SourceSurface->iBitmapFormat));
 318       return FALSE;
 319   }
 320
 321   return TRUE;
 322 }
 323
 324 BOOLEAN
 325 DIB_24BPP_BitBlt(PBLTINFO BltInfo)
 326 {
 327    ULONG DestX, DestY;
 328    ULONG SourceX, SourceY;
 329    ULONG PatternY = 0;
 330    ULONG Dest, Source = 0, Pattern = 0;
 331    BOOL UsesSource;
 332    BOOL UsesPattern;
 333    PBYTE DestBits;
 334
 335    UsesSource = ROP4_USES_SOURCE(BltInfo->Rop4);
 336    UsesPattern = ROP4_USES_PATTERN(BltInfo->Rop4);
 337
 338    SourceY = BltInfo->SourcePoint.y;
 339    DestBits = (PBYTE)(
 340       (PBYTE)BltInfo->DestSurface->pvScan0 +
 341       (BltInfo->DestRect.left << 1) + BltInfo->DestRect.left +
 342       BltInfo->DestRect.top * BltInfo->DestSurface->lDelta);
 343
 344    if (UsesPattern)
 345    {
 346       if (BltInfo->PatternSurface)
 347       {
 348          PatternY = (BltInfo->DestRect.top + BltInfo->BrushOrigin.y) %
 349                     BltInfo->PatternSurface->sizlBitmap.cy;
 350       }
 351       else
 352       {
 353          Pattern = BltInfo->Brush->iSolidColor;
 354       }
 355    }
 356
 357    for (DestY = BltInfo->DestRect.top; DestY < BltInfo->DestRect.bottom; DestY++)
 358    {
 359       SourceX = BltInfo->SourcePoint.x;
 360
 361       for (DestX = BltInfo->DestRect.left; DestX < BltInfo->DestRect.right; DestX++, DestBits += 3, SourceX++)
 362       {
 363          Dest = *((PUSHORT)DestBits) + (*(DestBits + 2) << 16);
 364
 365          if (UsesSource)
 366          {
 367             Source = DIB_GetSource(BltInfo->SourceSurface, SourceX, SourceY, BltInfo->XlateSourceToDest);
 368          }
 369
 370          if (BltInfo->PatternSurface)
 371          {
 372             Pattern = DIB_GetSource(BltInfo->PatternSurface, (DestX + BltInfo->BrushOrigin.x) % BltInfo->PatternSurface->sizlBitmap.cx, PatternY, BltInfo->XlatePatternToDest);
 373          }
 374
 375          Dest = DIB_DoRop(BltInfo->Rop4, Dest, Source, Pattern) & 0xFFFFFF;
 376          *(PUSHORT)(DestBits) = Dest & 0xFFFF;
 377          *(DestBits + 2) = Dest >> 16;
 378       }
 379
 380       SourceY++;
 381       if (BltInfo->PatternSurface)
 382       {
 383          PatternY++;
 384          PatternY %= BltInfo->PatternSurface->sizlBitmap.cy;
 385       }
 386       DestBits -= (BltInfo->DestRect.right - BltInfo->DestRect.left) * 3;
 387       DestBits += BltInfo->DestSurface->lDelta;
 388    }
 389
 390    return TRUE;
 391 }
 392
 393 /* BitBlt Optimize */
 394 BOOLEAN
 395 DIB_24BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
 396 {
 397   ULONG DestY;
 398
 399 #ifdef _M_IX86
 400   PBYTE xaddr = (PBYTE)DestSurface->pvScan0 + DestRect->top * DestSurface->lDelta + (DestRect->left << 1) + DestRect->left;
 401   PBYTE addr;
 402   ULONG Count;
 403   ULONG xCount=DestRect->right - DestRect->left;
 404
 405   for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
 406   {
 407     Count = xCount;
 408     addr = xaddr;
 409     xaddr = (PBYTE)((ULONG_PTR)addr + DestSurface->lDelta);
 410
 411     if (Count < 8)
 412     {
 413       /* For small fills, don't bother doing anything fancy */
 414       while (Count--)
 415         {
 416           *(PUSHORT)(addr) = color;
 417           addr += 2;
 418           *(addr) = color >> 16;
 419           addr += 1;
 420         }
 421     }
 422   else
 423     {
 424       /* Align to 4-byte address */
 425       while (0 != ((ULONG_PTR) addr & 0x3))
 426         {
 427           *(PUSHORT)(addr) = color;
 428           addr += 2;
 429           *(addr) = color >> 16;
 430           addr += 1;
 431           Count--;
 432         }
 433       /* If the color we need to fill with is 0ABC, then the final mem pattern
 434        * (note little-endianness) would be:
 435        *
 436        * |C.B.A|C.B.A|C.B.A|C.B.A|   <- pixel borders
 437        * |C.B.A.C|B.A.C.B|A.C.B.A|   <- ULONG borders
 438        *
 439        * So, taking endianness into account again, we need to fill with these
 440        * ULONGs: CABC BCAB ABCA */
 441
 442        /* This is about 30% faster than the generic C code below */
 443        __asm__ __volatile__ (
 444 "      movl %1, %%ecx\n"
 445 "      andl $0xffffff, %%ecx\n"         /* 0ABC */
 446 "      movl %%ecx, %%ebx\n"             /* Construct BCAB in ebx */
 447 "      shrl $8, %%ebx\n"
 448 "      movl %%ecx, %%eax\n"
 449 "      shll $16, %%eax\n"
 450 "      orl  %%eax, %%ebx\n"
 451 "      movl %%ecx, %%edx\n"             /* Construct ABCA in edx */
 452 "      shll $8, %%edx\n"
 453 "      movl %%ecx, %%eax\n"
 454 "      shrl $16, %%eax\n"
 455 "      orl  %%eax, %%edx\n"
 456 "      movl %%ecx, %%eax\n"             /* Construct CABC in eax */
 457 "      shll $24, %%eax\n"
 458 "      orl  %%ecx, %%eax\n"
 459 "      movl %2, %%ecx\n"                /* Load count */
 460 "      shr  $2, %%ecx\n"
 461 "      movl %3, %%edi\n"                /* Load dest */
 462 ".FL1:\n"
 463 "      movl %%eax, (%%edi)\n"           /* Store 4 pixels, 12 bytes */
 464 "      movl %%ebx, 4(%%edi)\n"
 465 "      movl %%edx, 8(%%edi)\n"
 466 "      addl $12, %%edi\n"
 467 "      dec  %%ecx\n"
 468 "      jnz  .FL1\n"
 469 "      movl %%edi, %0\n"
 470   : "=m"(addr)
 471   : "m"(color), "m"(Count), "m"(addr)
 472   : "%eax", "%ebx", "%ecx", "%edx", "%edi");
 473    Count = Count & 0x03;
 474       while (0 != Count--)
 475         {
 476           *(PUSHORT)(addr) = color;
 477           addr += 2;
 478           *(addr) = color >> 16;
 479           addr += 1;
 480         }
 481     }
 482   }
 483 #else
 484
 485   for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
 486     {
 487       DIB_24BPP_HLine(DestSurface, DestRect->left, DestRect->right, DestY, color);
 488     }
 489 #endif
 490   return TRUE;
 491 }
 492
 493 //NOTE: If you change something here, please do the same in other dibXXbpp.c files!
 494 BOOLEAN DIB_24BPP_StretchBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
 495                             RECTL* DestRect, RECTL *SourceRect,
 496                             POINTL* MaskOrigin, POINTL BrushOrigin,
 497                             CLIPOBJ *ClipRegion, XLATEOBJ *ColorTranslation,
 498                             ULONG Mode)
 499 {
 500    int SrcSizeY;
 501    int SrcSizeX;
 502    int DesSizeY;
 503    int DesSizeX;
 504    int sx;
 505    int sy;
 506    int DesX;
 507    int DesY;
 508    int color;
 509    int zoomX;
 510    int zoomY;
 511    int count;
 512    int saveX;
 513    int saveY;
 514    BOOLEAN DesIsBiggerY=FALSE;
 515
 516    SrcSizeY = SourceRect->bottom - SourceRect->top;
 517    SrcSizeX = SourceRect->right - SourceRect->left;
 518
 519    DesSizeY = DestRect->bottom - DestRect->top;
 520    DesSizeX = DestRect->right - DestRect->left;
 521
 522    zoomX = DesSizeX / SrcSizeX;
 523    if (zoomX==0) zoomX=1;
 524
 525    zoomY = DesSizeY / SrcSizeY;
 526    if (zoomY==0) zoomY=1;
 527
 528    if (DesSizeY>SrcSizeY)
 529       DesIsBiggerY = TRUE;
 530
 531     switch(SourceSurf->iBitmapFormat)
 532     {
 533             case BMF_1BPP:
 534                    /* FIXME :  MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
 535                    /* This is a reference implementation, it hasn't been optimized for speed */
 536            if (zoomX>1)
 537                    {
 538                      /* Draw one Hline on X - Led to the Des Zoom In*/
 539                      if (DesSizeX>SrcSizeX)
 540                          {
 541                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 542                                 {
 543                                         if (DesIsBiggerY)
 544                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 545                                         else
 546                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 547
 548                                         if (sy > SourceRect->bottom) break;
 549
 550                                         saveY = DesY+zoomY;
 551
 552                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 553                                         {
 554                                                 sx = (int) ((ULONG) SrcSizeX * (ULONG) DesX) / ((ULONG) DesSizeX);
 555
 556                                                 if (sx > SourceRect->right) break;
 557
 558                                                 saveX = DesX + zoomX;
 559
 560                                                 if (DIB_1BPP_GetPixel(SourceSurf, sx, sy) == 0)
 561                                                    for (count=DesY;count<saveY;count++)
 562                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, 0);
 563                                                 else
 564                                                         for (count=DesY;count<saveY;count++)
 565                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, 1);
 566
 567                                           }
 568                                   }
 569                             }
 570                          else
 571                          {
 572                            /* Draw one Hline on X - Led to the Des Zoom Out*/
 573
 574                for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 575                                 {
 576                                         if (DesIsBiggerY)
 577                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 578                                         else
 579                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 580
 581                                         if (sy > SourceRect->bottom) break;
 582
 583                                         saveY = DesY+zoomY;
 584
 585                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 586                                         {
 587                                                 sx = (int) ((ULONG) DesSizeX * (ULONG) DesX) / ((ULONG) SrcSizeX);
 588
 589                                                 if (sx > SourceRect->right) break;
 590
 591                                                 saveX = DesX + zoomX;
 592
 593                                                 if (DIB_1BPP_GetPixel(SourceSurf, sx, sy) == 0)
 594                                                    for (count=DesY;count<saveY;count++)
 595                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, 0);
 596                                                 else
 597                                                         for (count=DesY;count<saveY;count++)
 598                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, 1);
 599
 600                                           }
 601                                   }
 602                          }
 603                    }
 604                    else
 605                    {
 606
 607                     if (DesSizeX>SrcSizeX)
 608                         {
 609                                 /* Draw one pixel on X - Led to the Des Zoom In*/
 610                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 611                                 {
 612                                         if (DesIsBiggerY)
 613                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 614                                         else
 615                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 616
 617                                         if (sy > SourceRect->bottom) break;
 618
 619                                         saveY = DesY+zoomY;
 620
 621                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 622                                         {
 623                                                 sx = (int) ((ULONG) SrcSizeX * (ULONG) DesX) / ((ULONG) DesSizeX);
 624
 625                                                 if (sx > SourceRect->right) break;
 626
 627                                                 if (DIB_1BPP_GetPixel(SourceSurf, sx, sy) == 0)
 628                                                    for (count=DesY;count<saveY;count++)
 629                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, 0);
 630                                                 else
 631                                                         for (count=DesY;count<saveY;count++)
 632                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, 1);
 633
 634
 635                                          }
 636                           }
 637                          }
 638                         else
 639                         {
 640                                 /* Draw one pixel on X - Led to the Des Zoom Out*/
 641                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 642                                 {
 643                                         if (DesIsBiggerY)
 644                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 645                                         else
 646                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 647
 648                                         if (sy > SourceRect->bottom) break;
 649
 650                                         saveY = DesY+zoomY;
 651
 652                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 653                                         {
 654                                                 sx = (int) ((ULONG) DesSizeX * (ULONG) DesX) / ((ULONG) SrcSizeX);
 655
 656                                                 if (sx > SourceRect->right) break;
 657
 658                                                 if (DIB_1BPP_GetPixel(SourceSurf, sx, sy) == 0)
 659                                                    for (count=DesY;count<saveY;count++)
 660                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, 0);
 661                                                 else
 662                                                         for (count=DesY;count<saveY;count++)
 663                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, 1);
 664
 665                                          }
 666                           }
 667                         }
 668                    }
 669                 break;
 670
 671       case BMF_4BPP:
 672                    /* FIXME :  MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
 673                    /* This is a reference implementation, it hasn't been optimized for speed */
 674            if (zoomX>1)
 675                    {
 676                      /* Draw one Hline on X - Led to the Des Zoom In*/
 677                      if (DesSizeX>SrcSizeX)
 678                          {
 679                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 680                                 {
 681                                         if (DesIsBiggerY)
 682                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 683                                         else
 684                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 685
 686                                         if (sy > SourceRect->bottom) break;
 687
 688                                         saveY = DesY+zoomY;
 689
 690                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 691                                         {
 692                                                 sx = (int) ((ULONG) SrcSizeX * (ULONG) DesX) / ((ULONG) DesSizeX);
 693
 694                                                 if (sx > SourceRect->right) break;
 695
 696                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_4BPP_GetPixel(SourceSurf, sx, sy));
 697
 698                                                 saveX = DesX + zoomX;
 699                                                 for (count=DesY;count<saveY;count++)
 700                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, color);
 701                                           }
 702                                   }
 703                             }
 704                          else
 705                          {
 706                            /* Draw one Hline on X - Led to the Des Zoom Out*/
 707
 708                for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 709                                 {
 710                                         if (DesIsBiggerY)
 711                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 712                                         else
 713                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 714
 715                                         if (sy > SourceRect->bottom) break;
 716
 717                                         saveY = DesY+zoomY;
 718
 719                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 720                                         {
 721                                                 sx = (int) ((ULONG) DesSizeX * (ULONG) DesX) / ((ULONG) SrcSizeX);
 722
 723                                                 if (sx > SourceRect->right) break;
 724
 725                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_4BPP_GetPixel(SourceSurf, sx, sy));
 726
 727                                                 saveX = DesX + zoomX;
 728                                                 for (count=DesY;count<saveY;count++)
 729                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, color);
 730                                           }
 731                                   }
 732                          }
 733                    }
 734
 735                    else
 736                    {
 737
 738                     if (DesSizeX>SrcSizeX)
 739                         {
 740                                 /* Draw one pixel on X - Led to the Des Zoom In*/
 741                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 742                                 {
 743                                         if (DesIsBiggerY)
 744                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 745                                         else
 746                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 747
 748                                         if (sy > SourceRect->bottom) break;
 749
 750                                         saveY = DesY+zoomY;
 751
 752                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 753                                         {
 754                                                 sx = (int) ((ULONG) SrcSizeX * (ULONG) DesX) / ((ULONG) DesSizeX);
 755
 756                                                 if (sx > SourceRect->right) break;
 757
 758                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_4BPP_GetPixel(SourceSurf, sx, sy));
 759
 760                                                 for (count=DesY;count<saveY;count++)
 761                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, color);
 762                                          }
 763                           }
 764                          }
 765                         else
 766                         {
 767                                 /* Draw one pixel on X - Led to the Des Zoom Out*/
 768                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 769                                 {
 770                                         if (DesIsBiggerY)
 771                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 772                                         else
 773                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 774
 775                                         if (sy > SourceRect->bottom) break;
 776
 777                                         saveY = DesY+zoomY;
 778
 779                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 780                                         {
 781                                                 sx = (int) ((ULONG) DesSizeX * (ULONG) DesX) / ((ULONG) SrcSizeX);
 782
 783                                                 if (sx > SourceRect->right) break;
 784
 785                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_4BPP_GetPixel(SourceSurf, sx, sy));
 786
 787                                                 for (count=DesY;count<saveY;count++)
 788                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, color);
 789                                          }
 790                           }
 791                         }
 792                    }
 793                 break;
 794
 795       case BMF_8BPP:
 796                    /* FIXME :  MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
 797                    /* This is a reference implementation, it hasn't been optimized for speed */
 798            if (zoomX>1)
 799                    {
 800                      /* Draw one Hline on X - Led to the Des Zoom In*/
 801                      if (DesSizeX>SrcSizeX)
 802                          {
 803                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 804                                 {
 805                                         if (DesIsBiggerY)
 806                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 807                                         else
 808                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 809
 810                                         if (sy > SourceRect->bottom) break;
 811
 812                                         saveY = DesY+zoomY;
 813
 814                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 815                                         {
 816                                                 sx = (int) ((ULONG) SrcSizeX * (ULONG) DesX) / ((ULONG) DesSizeX);
 817
 818                                                 if (sx > SourceRect->right) break;
 819
 820                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_8BPP_GetPixel(SourceSurf, sx, sy));
 821
 822                                                 saveX = DesX + zoomX;
 823                                                 for (count=DesY;count<saveY;count++)
 824                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, color);
 825                                           }
 826                                   }
 827                             }
 828                          else
 829                          {
 830                            /* Draw one Hline on X - Led to the Des Zoom Out*/
 831
 832                for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 833                                 {
 834                                         if (DesIsBiggerY)
 835                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 836                                         else
 837                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 838
 839                                         if (sy > SourceRect->bottom) break;
 840
 841                                         saveY = DesY+zoomY;
 842
 843                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 844                                         {
 845                                                 sx = (int) ((ULONG) DesSizeX * (ULONG) DesX) / ((ULONG) SrcSizeX);
 846
 847                                                 if (sx > SourceRect->right) break;
 848
 849                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_8BPP_GetPixel(SourceSurf, sx, sy));
 850
 851                                                 saveX = DesX + zoomX;
 852                                                 for (count=DesY;count<saveY;count++)
 853                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, color);
 854                                           }
 855                                   }
 856                          }
 857                    }
 858
 859                    else
 860                    {
 861
 862                     if (DesSizeX>SrcSizeX)
 863                         {
 864                                 /* Draw one pixel on X - Led to the Des Zoom In*/
 865                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 866                                 {
 867                                         if (DesIsBiggerY)
 868                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 869                                         else
 870                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 871
 872                                         if (sy > SourceRect->bottom) break;
 873
 874                                         saveY = DesY+zoomY;
 875
 876                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 877                                         {
 878                                                 sx = (int) ((ULONG) SrcSizeX * (ULONG) DesX) / ((ULONG) DesSizeX);
 879
 880                                                 if (sx > SourceRect->right) break;
 881
 882                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_8BPP_GetPixel(SourceSurf, sx, sy));
 883
 884                                                 for (count=DesY;count<saveY;count++)
 885                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, color);
 886                                          }
 887                           }
 888                          }
 889                         else
 890                         {
 891                                 /* Draw one pixel on X - Led to the Des Zoom Out*/
 892                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 893                                 {
 894                                         if (DesIsBiggerY)
 895                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 896                                         else
 897                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 898
 899                                         if (sy > SourceRect->bottom) break;
 900
 901                                         saveY = DesY+zoomY;
 902
 903                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 904                                         {
 905                                                 sx = (int) ((ULONG) DesSizeX * (ULONG) DesX) / ((ULONG) SrcSizeX);
 906
 907                                                 if (sx > SourceRect->right) break;
 908
 909                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_8BPP_GetPixel(SourceSurf, sx, sy));
 910
 911                                                 for (count=DesY;count<saveY;count++)
 912                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, color);
 913                                          }
 914                           }
 915                         }
 916                    }
 917                 break;
 918
 919       case BMF_16BPP:
 920                    /* FIXME :  MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
 921                    /* This is a reference implementation, it hasn't been optimized for speed */
 922            if (zoomX>1)
 923                    {
 924                      /* Draw one Hline on X - Led to the Des Zoom In*/
 925                      if (DesSizeX>SrcSizeX)
 926                          {
 927                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 928                                 {
 929                                         if (DesIsBiggerY)
 930                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 931                                         else
 932                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 933
 934                                         if (sy > SourceRect->bottom) break;
 935
 936                                         saveY = DesY+zoomY;
 937
 938                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 939                                         {
 940                                                 sx = (int) ((ULONG) SrcSizeX * (ULONG) DesX) / ((ULONG) DesSizeX);
 941
 942                                                 if (sx > SourceRect->right) break;
 943
 944                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_16BPP_GetPixel(SourceSurf, sx, sy));
 945
 946                                                 saveX = DesX + zoomX;
 947                                                 for (count=DesY;count<saveY;count++)
 948                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, color);
 949                                           }
 950                                   }
 951                             }
 952                          else
 953                          {
 954                            /* Draw one Hline on X - Led to the Des Zoom Out*/
 955
 956                for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 957                                 {
 958                                         if (DesIsBiggerY)
 959                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 960                                         else
 961                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 962
 963                                         if (sy > SourceRect->bottom) break;
 964
 965                                         saveY = DesY+zoomY;
 966
 967                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
 968                                         {
 969                                                 sx = (int) ((ULONG) DesSizeX * (ULONG) DesX) / ((ULONG) SrcSizeX);
 970
 971                                                 if (sx > SourceRect->right) break;
 972
 973                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_16BPP_GetPixel(SourceSurf, sx, sy));
 974
 975                                                 saveX = DesX + zoomX;
 976                                                 for (count=DesY;count<saveY;count++)
 977                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, color);
 978                                           }
 979                                   }
 980                          }
 981                    }
 982
 983                    else
 984                    {
 985
 986                     if (DesSizeX>SrcSizeX)
 987                         {
 988                                 /* Draw one pixel on X - Led to the Des Zoom In*/
 989                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
 990                                 {
 991                                         if (DesIsBiggerY)
 992                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
 993                                         else
 994                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
 995
 996                                         if (sy > SourceRect->bottom) break;
 997
 998                                         saveY = DesY+zoomY;
 999
1000                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
1001                                         {
1002                                                 sx = (int) ((ULONG) SrcSizeX * (ULONG) DesX) / ((ULONG) DesSizeX);
1003
1004                                                 if (sx > SourceRect->right) break;
1005
1006                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_16BPP_GetPixel(SourceSurf, sx, sy));
1007
1008                                                 for (count=DesY;count<saveY;count++)
1009                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, color);
1010                                          }
1011                           }
1012                          }
1013                         else
1014                         {
1015                                 /* Draw one pixel on X - Led to the Des Zoom Out*/
1016                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
1017                                 {
1018                                         if (DesIsBiggerY)
1019                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
1020                                         else
1021                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
1022
1023                                         if (sy > SourceRect->bottom) break;
1024
1025                                         saveY = DesY+zoomY;
1026
1027                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
1028                                         {
1029                                                 sx = (int) ((ULONG) DesSizeX * (ULONG) DesX) / ((ULONG) SrcSizeX);
1030
1031                                                 if (sx > SourceRect->right) break;
1032
1033                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_16BPP_GetPixel(SourceSurf, sx, sy));
1034
1035                                                 for (count=DesY;count<saveY;count++)
1036                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, color);
1037                                          }
1038                           }
1039                         }
1040                    }
1041                 break;
1042
1043       case BMF_24BPP:
1044                    /* FIXME :  MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
1045                    /* This is a reference implementation, it hasn't been optimized for speed */
1046            if (zoomX>1)
1047                    {
1048                      /* Draw one Hline on X - Led to the Des Zoom In*/
1049                      if (DesSizeX>SrcSizeX)
1050                          {
1051                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
1052                                 {
1053                                         if (DesIsBiggerY)
1054                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
1055                                         else
1056                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
1057
1058                                         if (sy > SourceRect->bottom) break;
1059
1060                                         saveY = DesY+zoomY;
1061
1062                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
1063                                         {
1064                                                 sx = (int) ((ULONG) SrcSizeX * (ULONG) DesX) / ((ULONG) DesSizeX);
1065
1066                                                 if (sx > SourceRect->right) break;
1067
1068                                                 color =  DIB_24BPP_GetPixel(SourceSurf, sx, sy);
1069
1070                                                 saveX = DesX + zoomX;
1071                                                 for (count=DesY;count<saveY;count++)
1072                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, color);
1073                                           }
1074                                   }
1075                             }
1076                          else
1077                          {
1078                            /* Draw one Hline on X - Led to the Des Zoom Out*/
1079
1080                for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
1081                                 {
1082                                         if (DesIsBiggerY)
1083                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
1084                                         else
1085                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
1086
1087                                         if (sy > SourceRect->bottom) break;
1088
1089                                         saveY = DesY+zoomY;
1090
1091                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
1092                                         {
1093                                                 sx = (int) ((ULONG) DesSizeX * (ULONG) DesX) / ((ULONG) SrcSizeX);
1094
1095                                                 if (sx > SourceRect->right) break;
1096
1097                                                 color =  DIB_24BPP_GetPixel(SourceSurf, sx, sy);
1098
1099                                                 saveX = DesX + zoomX;
1100                                                 for (count=DesY;count<saveY;count++)
1101                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, color);
1102                                           }
1103                                   }
1104                          }
1105                    }
1106
1107                    else
1108                    {
1109
1110                     if (DesSizeX>SrcSizeX)
1111                         {
1112                                 /* Draw one pixel on X - Led to the Des Zoom In*/
1113                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
1114                                 {
1115                                         if (DesIsBiggerY)
1116                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
1117                                         else
1118                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
1119
1120                                         if (sy > SourceRect->bottom) break;
1121
1122                                         saveY = DesY+zoomY;
1123
1124                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
1125                                         {
1126                                                 sx = (int) ((ULONG) SrcSizeX * (ULONG) DesX) / ((ULONG) DesSizeX);
1127
1128                                                 if (sx > SourceRect->right) break;
1129
1130                                                 color =  DIB_24BPP_GetPixel(SourceSurf, sx, sy);
1131
1132                                                 for (count=DesY;count<saveY;count++)
1133                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, color);
1134                                          }
1135                           }
1136                          }
1137                         else
1138                         {
1139                                 /* Draw one pixel on X - Led to the Des Zoom Out*/
1140                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
1141                                 {
1142                                         if (DesIsBiggerY)
1143                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
1144                                         else
1145                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
1146
1147                                         if (sy > SourceRect->bottom) break;
1148
1149                                         saveY = DesY+zoomY;
1150
1151                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
1152                                         {
1153                                                 sx = (int) ((ULONG) DesSizeX * (ULONG) DesX) / ((ULONG) SrcSizeX);
1154
1155                                                 if (sx > SourceRect->right) break;
1156
1157                                                 color =  DIB_24BPP_GetPixel(SourceSurf, sx, sy);
1158
1159                                                 for (count=DesY;count<saveY;count++)
1160                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, color);
1161                                          }
1162                           }
1163                         }
1164                    }
1165                 break;
1166
1167       case BMF_32BPP:
1168                    /* FIXME :  MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
1169                    /* This is a reference implementation, it hasn't been optimized for speed */
1170            if (zoomX>1)
1171                    {
1172                      /* Draw one Hline on X - Led to the Des Zoom In*/
1173                      if (DesSizeX>SrcSizeX)
1174                          {
1175                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
1176                                 {
1177                                         if (DesIsBiggerY)
1178                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
1179                                         else
1180                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
1181
1182                                         if (sy > SourceRect->bottom) break;
1183
1184                                         saveY = DesY+zoomY;
1185
1186                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
1187                                         {
1188                                                 sx = (int) ((ULONG) SrcSizeX * (ULONG) DesX) / ((ULONG) DesSizeX);
1189
1190                                                 if (sx > SourceRect->right) break;
1191
1192                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_32BPP_GetPixel(SourceSurf, sx, sy));
1193
1194                                                 saveX = DesX + zoomX;
1195                                                 for (count=DesY;count<saveY;count++)
1196                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, color);
1197                                           }
1198                                   }
1199                             }
1200                          else
1201                          {
1202                            /* Draw one Hline on X - Led to the Des Zoom Out*/
1203
1204                for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
1205                                 {
1206                                         if (DesIsBiggerY)
1207                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
1208                                         else
1209                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
1210
1211                                         if (sy > SourceRect->bottom) break;
1212
1213                                         saveY = DesY+zoomY;
1214
1215                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
1216                                         {
1217                                                 sx = (int) ((ULONG) DesSizeX * (ULONG) DesX) / ((ULONG) SrcSizeX);
1218
1219                                                 if (sx > SourceRect->right) break;
1220
1221                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_32BPP_GetPixel(SourceSurf, sx, sy));
1222
1223                                                 saveX = DesX + zoomX;
1224                                                 for (count=DesY;count<saveY;count++)
1225                                                         DIB_24BPP_HLine(DestSurf, DesX, saveX, count, color);
1226                                           }
1227                                   }
1228                          }
1229                    }
1230
1231                    else
1232                    {
1233
1234                     if (DesSizeX>SrcSizeX)
1235                         {
1236                                 /* Draw one pixel on X - Led to the Des Zoom In*/
1237                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
1238                                 {
1239                                         if (DesIsBiggerY)
1240                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
1241                                         else
1242                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
1243
1244                                         if (sy > SourceRect->bottom) break;
1245
1246                                         saveY = DesY+zoomY;
1247
1248                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
1249                                         {
1250                                                 sx = (int) ((ULONG) SrcSizeX * (ULONG) DesX) / ((ULONG) DesSizeX);
1251
1252                                                 if (sx > SourceRect->right) break;
1253
1254                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_32BPP_GetPixel(SourceSurf, sx, sy));
1255
1256                                                 for (count=DesY;count<saveY;count++)
1257                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, color);
1258                                          }
1259                           }
1260                          }
1261                         else
1262                         {
1263                                 /* Draw one pixel on X - Led to the Des Zoom Out*/
1264                                 for (DesY=DestRect->bottom-zoomY; DesY>=0; DesY-=zoomY)
1265                                 {
1266                                         if (DesIsBiggerY)
1267                                                 sy = (int) ((ULONG) SrcSizeY * (ULONG) DesY) / ((ULONG) DesSizeY);
1268                                         else
1269                                                 sy = (int) ((ULONG) DesSizeY * (ULONG) DesY) / ((ULONG) SrcSizeY);
1270
1271                                         if (sy > SourceRect->bottom) break;
1272
1273                                         saveY = DesY+zoomY;
1274
1275                                         for (DesX=DestRect->right-zoomX; DesX>=0; DesX-=zoomX)
1276                                         {
1277                                                 sx = (int) ((ULONG) DesSizeX * (ULONG) DesX) / ((ULONG) SrcSizeX);
1278
1279                                                 if (sx > SourceRect->right) break;
1280
1281                                                 color =  XLATEOBJ_iXlate(ColorTranslation, DIB_32BPP_GetPixel(SourceSurf, sx, sy));
1282
1283                                                 for (count=DesY;count<saveY;count++)
1284                                                         DIB_24BPP_PutPixel(DestSurf, DesX, count, color);
1285                                          }
1286                           }
1287                         }
1288                    }
1289                 break;
1290
1291       default:
1292       //DPRINT1("DIB_24BPP_StretchBlt: Unhandled Source BPP: %u\n", BitsPerFormat(SourceSurf->iBitmapFormat));
1293       return FALSE;
1294     }
1295
1296   return TRUE;
1297 }
1298
1299 BOOLEAN
1300 DIB_24BPP_TransparentBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
1301                          RECTL*  DestRect,  POINTL  *SourcePoint,
1302                          XLATEOBJ *ColorTranslation, ULONG iTransColor)
1303 {
1304   ULONG X, Y, SourceX, SourceY, Source, wd, Dest;
1305   BYTE *DestBits;
1306
1307   SourceY = SourcePoint->y;
1308   DestBits = (BYTE*)((PBYTE)DestSurf->pvScan0 +
1309                       (DestRect->left << 2) +
1310                       DestRect->top * DestSurf->lDelta);
1311   wd = DestSurf->lDelta - ((DestRect->right - DestRect->left) << 2);
1312
1313   for(Y = DestRect->top; Y < DestRect->bottom; Y++)
1314   {
1315     SourceX = SourcePoint->x;
1316     for(X = DestRect->left; X < DestRect->right; X++, DestBits += 3, SourceX++)
1317     {
1318       Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
1319       if(Source != iTransColor)
1320       {
1321         Dest = XLATEOBJ_iXlate(ColorTranslation, Source) & 0xFFFFFF;
1322          *(PUSHORT)(DestBits) = Dest & 0xFFFF;
1323          *(DestBits + 2) = Dest >> 16;
1324       }
1325     }
1326
1327     SourceY++;
1328     DestBits = (BYTE*)((ULONG_PTR)DestBits + wd);
1329   }
1330
1331   return TRUE;
1332 }
1333
1334 typedef union {
1335    ULONG ul;
1336    struct {
1337       UCHAR red;
1338       UCHAR green;
1339       UCHAR blue;
1340       UCHAR alpha;
1341    } col;
1342 } NICEPIXEL32;
1343
1344 STATIC inline UCHAR
1345 Clamp8(ULONG val)
1346 {
1347    return (val > 255) ? 255 : val;
1348 }
1349
1350 BOOLEAN
1351 DIB_24BPP_AlphaBlend(SURFOBJ* Dest, SURFOBJ* Source, RECTL* DestRect,
1352                      RECTL* SourceRect, CLIPOBJ* ClipRegion,
1353                      XLATEOBJ* ColorTranslation, BLENDOBJ* BlendObj)
1354 {
1355    INT Rows, Cols, SrcX, SrcY;
1356    register PUCHAR Dst;
1357    ULONG DstDelta;
1358    BLENDFUNCTION BlendFunc;
1359    register NICEPIXEL32 DstPixel, SrcPixel;
1360    UCHAR Alpha, SrcBpp;
1361
1362    DPRINT("DIB_24BPP_AlphaBlend: srcRect: (%d,%d)-(%d,%d), dstRect: (%d,%d)-(%d,%d)\n",
1363           SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
1364           DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
1365
1366    ASSERT(DestRect->bottom - DestRect->top == SourceRect->bottom - SourceRect->top &&
1367           DestRect->right - DestRect->left == SourceRect->right - SourceRect->left);
1368
1369    BlendFunc = BlendObj->BlendFunction;
1370    if (BlendFunc.BlendOp != AC_SRC_OVER)
1371    {
1372       DPRINT1("BlendOp != AC_SRC_OVER\n");
1373       return FALSE;
1374    }
1375    if (BlendFunc.BlendFlags != 0)
1376    {
1377       DPRINT1("BlendFlags != 0\n");
1378       return FALSE;
1379    }
1380    if ((BlendFunc.AlphaFormat & ~AC_SRC_ALPHA) != 0)
1381    {
1382       DPRINT1("Unsupported AlphaFormat (0x%x)\n", BlendFunc.AlphaFormat);
1383       return FALSE;
1384    }
1385    if ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0 &&
1386        BitsPerFormat(Source->iBitmapFormat) != 32)
1387    {
1388       DPRINT1("Source bitmap must be 32bpp when AC_SRC_ALPHA is set\n");
1389       return FALSE;
1390    }
1391
1392    Dst = (PUCHAR)((ULONG_PTR)Dest->pvScan0 + (DestRect->top * Dest->lDelta) +
1393                              (DestRect->left * 3));
1394    DstDelta = Dest->lDelta - ((DestRect->right - DestRect->left) * 3);
1395    SrcBpp = BitsPerFormat(Source->iBitmapFormat);
1396
1397    Rows = DestRect->bottom - DestRect->top;
1398    SrcY = SourceRect->top;
1399    while (--Rows >= 0)
1400    {
1401       Cols = DestRect->right - DestRect->left;
1402       SrcX = SourceRect->left;
1403       while (--Cols >= 0)
1404       {
1405          SrcPixel.ul = DIB_GetSource(Source, SrcX++, SrcY, ColorTranslation);
1406          SrcPixel.col.red = SrcPixel.col.red * BlendFunc.SourceConstantAlpha / 255;
1407          SrcPixel.col.green = SrcPixel.col.green * BlendFunc.SourceConstantAlpha / 255;
1408          SrcPixel.col.blue = SrcPixel.col.blue * BlendFunc.SourceConstantAlpha / 255;
1409          SrcPixel.col.alpha = (SrcBpp == 32) ? (SrcPixel.col.alpha * BlendFunc.SourceConstantAlpha / 255) : BlendFunc.SourceConstantAlpha;
1410
1411          Alpha = ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0) ?
1412                  SrcPixel.col.alpha : BlendFunc.SourceConstantAlpha;
1413
1414          DstPixel.ul = *Dst;
1415          DstPixel.col.red = Clamp8(DstPixel.col.red * (255 - Alpha) / 255 + SrcPixel.col.red);
1416          DstPixel.col.green = Clamp8(DstPixel.col.green * (255 - Alpha) / 255 + SrcPixel.col.green);
1417          DstPixel.col.blue = Clamp8(DstPixel.col.blue * (255 - Alpha) / 255 + SrcPixel.col.blue);
1418          *Dst = DstPixel.ul;
1419          Dst = (PUCHAR)((ULONG_PTR)Dst + 3);
1420       }
1421       Dst = (PUCHAR)((ULONG_PTR)Dst + DstDelta);
1422       SrcY++;
1423    }
1424
1425    return TRUE;
1426 }
1427
1428 /* EOF */