/*
- * ReactOS W32 Subsystem
- * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * PROJECT: Win32 subsystem
+ * LICENSE: See COPYING in the top level directory
+ * FILE: subsystems/win32/win32k/dib/dib16bpp.c
+ * PURPOSE: Device Independant Bitmap functions, 16bpp
+ * PROGRAMMERS: Jason Filby
+ * Thomas Bluemel
+ * Gregor Anich
*/
-#include <w32k.h>
+#include <win32k.h>
#define NDEBUG
#include <debug.h>
VOID
DIB_16BPP_PutPixel(SURFOBJ *SurfObj, LONG x, LONG y, ULONG c)
{
- PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta;
- PWORD addr = (PWORD)byteaddr + x;
+ PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta;
+ PWORD addr = (PWORD)byteaddr + x;
- *addr = (WORD)c;
+ *addr = (WORD)c;
}
ULONG
DIB_16BPP_GetPixel(SURFOBJ *SurfObj, LONG x, LONG y)
{
- PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta;
- PWORD addr = (PWORD)byteaddr + x;
- return (ULONG)(*addr);
+ PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta;
+ PWORD addr = (PWORD)byteaddr + x;
+ return (ULONG)(*addr);
}
VOID
DIB_16BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
{
- PDWORD addr = (PDWORD)((PWORD)((PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta) + x1);
+ PDWORD addr = (PDWORD)((PWORD)((PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta) + x1);
#if defined(_M_IX86) && !defined(_MSC_VER)
- /* This is about 10% faster than the generic C code below */
- LONG Count = x2 - x1;
+ /* This is about 10% faster than the generic C code below */
+ LONG Count = x2 - x1;
- __asm__ __volatile__ (
+ __asm__ __volatile__ (
" cld\n"
" mov %0, %%eax\n"
" shl $16, %%eax\n"
" stosw\n"
"1:\n"
: /* no output */
- : "r"(c), "r"(Count), "m"(addr)
+ : "r"(c), "r"(Count), "m"(addr)
: "%eax", "%ecx", "%edi");
#else /* _M_IX86 */
- LONG cx = x1;
- DWORD cc;
-
- if (0 != (cx & 0x01))
- {
- *((PWORD) addr) = c;
- cx++;
- addr = (PDWORD)((PWORD)(addr) + 1);
- }
- cc = ((c & 0xffff) << 16) | (c & 0xffff);
- while(cx + 1 < x2)
- {
- *addr++ = cc;
- cx += 2;
- }
- if (cx < x2)
- {
- *((PWORD) addr) = c;
- }
+ LONG cx = x1;
+ DWORD cc;
+
+ if (0 != (cx & 0x01))
+ {
+ *((PWORD) addr) = c;
+ cx++;
+ addr = (PDWORD)((PWORD)(addr) + 1);
+ }
+ cc = ((c & 0xffff) << 16) | (c & 0xffff);
+ while(cx + 1 < x2)
+ {
+ *addr++ = cc;
+ cx += 2;
+ }
+ if (cx < x2)
+ {
+ *((PWORD) addr) = c;
+ }
#endif /* _M_IX86 */
}
DIB_16BPP_VLine(SURFOBJ *SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
{
#if defined(_M_IX86) && !defined(_MSC_VER)
- asm volatile(
+ asm volatile(
" testl %2, %2" "\n\t"
" jle 2f" "\n\t"
" movl %2, %%ecx" "\n\t"
" jnz 1b" "\n\t"
"2:" "\n\t"
: /* no output */
- : "r"((PBYTE)SurfObj->pvScan0 + (y1 * SurfObj->lDelta) + (x * sizeof (WORD))),
- "r"(SurfObj->lDelta), "r"(y2 - y1), "a"(c)
+ : "r"((PBYTE)SurfObj->pvScan0 + (y1 * SurfObj->lDelta) + (x * sizeof (WORD))),
+ "r"(SurfObj->lDelta), "r"(y2 - y1), "a"(c)
: "cc", "memory", "%ecx");
#else
- PBYTE byteaddr = (PBYTE)(ULONG_PTR)SurfObj->pvScan0 + y1 * SurfObj->lDelta;
- PWORD addr = (PWORD)byteaddr + x;
- LONG lDelta = SurfObj->lDelta;
+ PBYTE byteaddr = (PBYTE)(ULONG_PTR)SurfObj->pvScan0 + y1 * SurfObj->lDelta;
+ PWORD addr = (PWORD)byteaddr + x;
+ LONG lDelta = SurfObj->lDelta;
- byteaddr = (PBYTE)addr;
- while(y1++ < y2)
- {
- *addr = (WORD)c;
+ byteaddr = (PBYTE)addr;
+ while(y1++ < y2)
+ {
+ *addr = (WORD)c;
- byteaddr += lDelta;
- addr = (PWORD)byteaddr;
- }
+ byteaddr += lDelta;
+ addr = (PWORD)byteaddr;
+ }
#endif
}
BOOLEAN
DIB_16BPP_BitBltSrcCopy(PBLTINFO BltInfo)
{
- LONG i, j, sx, sy, xColor, f1;
- PBYTE SourceBits, DestBits, SourceLine, DestLine;
- PBYTE SourceBits_4BPP, SourceLine_4BPP;
- DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + (BltInfo->DestRect.top * BltInfo->DestSurface->lDelta) + 2 * BltInfo->DestRect.left;
-
- switch(BltInfo->SourceSurface->iBitmapFormat)
- {
- case BMF_1BPP:
- sx = BltInfo->SourcePoint.x;
- sy = BltInfo->SourcePoint.y;
- for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
- {
- sx = BltInfo->SourcePoint.x;
- for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
- {
- if(DIB_1BPP_GetPixel(BltInfo->SourceSurface, sx, sy) == 0)
- {
- DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j,
- XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 0));
- }
- else
- {
- DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j,
- XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 1));
- }
- sx++;
- }
- sy++;
- }
- break;
-
- case BMF_4BPP:
- SourceBits_4BPP = (PBYTE)BltInfo->SourceSurface->pvScan0 +
- (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
- (BltInfo->SourcePoint.x >> 1);
-
- for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
- {
- SourceLine_4BPP = SourceBits_4BPP;
- sx = BltInfo->SourcePoint.x;
- f1 = sx & 1;
-
- for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
- {
- xColor = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest,
- (*SourceLine_4BPP & altnotmask[f1]) >> (4 * (1 - f1)));
- DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j, xColor);
- if(f1 == 1)
- {
- SourceLine_4BPP++;
- f1 = 0;
- }
- else
- {
- f1 = 1;
- }
- sx++;
- }
- SourceBits_4BPP += BltInfo->SourceSurface->lDelta;
- }
- break;
-
- case BMF_8BPP:
- SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
- (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
- BltInfo->SourcePoint.x;
- DestLine = DestBits;
-
- for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
- {
- SourceBits = SourceLine;
- DestBits = DestLine;
-
- for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
- {
- *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
- BltInfo->XlateSourceToDest, *SourceBits);
- SourceBits += 1;
- DestBits += 2;
- }
-
- SourceLine += BltInfo->SourceSurface->lDelta;
- DestLine += BltInfo->DestSurface->lDelta;
- }
- break;
-
- case BMF_16BPP:
- if (NULL == BltInfo->XlateSourceToDest || 0 !=
- (BltInfo->XlateSourceToDest->flXlate & XO_TRIVIAL))
- {
- if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
- {
- SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 +
- (BltInfo->SourcePoint.y *
- BltInfo->SourceSurface->lDelta) + 2 *
- BltInfo->SourcePoint.x;
-
- for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
- {
- RtlMoveMemory(DestBits, SourceBits,
- 2 * (BltInfo->DestRect.right -
- BltInfo->DestRect.left));
-
- SourceBits += BltInfo->SourceSurface->lDelta;
- DestBits += BltInfo->DestSurface->lDelta;
- }
- }
- else
- {
- SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 +
- ((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom -
- BltInfo->DestRect.top - 1) *
- BltInfo->SourceSurface->lDelta) + 2 *
- BltInfo->SourcePoint.x;
-
- DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 +
- ((BltInfo->DestRect.bottom - 1) *
- BltInfo->DestSurface->lDelta) + 2 *
- BltInfo->DestRect.left;
-
- for (j = BltInfo->DestRect.bottom - 1;
- BltInfo->DestRect.top <= j; j--)
- {
- RtlMoveMemory(DestBits, SourceBits, 2 *
- (BltInfo->DestRect.right -
- BltInfo->DestRect.left));
-
- SourceBits -= BltInfo->SourceSurface->lDelta;
- DestBits -= BltInfo->DestSurface->lDelta;
- }
- }
- }
- else
- {
- if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
- {
- SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
- (BltInfo->SourcePoint.y *
- BltInfo->SourceSurface->lDelta) + 2 *
- BltInfo->SourcePoint.x;
-
- DestLine = DestBits;
- for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
- {
- SourceBits = SourceLine;
- DestBits = DestLine;
- for (i = BltInfo->DestRect.left; i <
- BltInfo->DestRect.right; i++)
- {
- *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
- BltInfo->XlateSourceToDest,
- *((WORD *)SourceBits));
- SourceBits += 2;
- DestBits += 2;
- }
- SourceLine += BltInfo->SourceSurface->lDelta;
- DestLine += BltInfo->DestSurface->lDelta;
- }
- }
- else
- {
- SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
- ((BltInfo->SourcePoint.y +
- BltInfo->DestRect.bottom -
- BltInfo->DestRect.top - 1) *
- BltInfo->SourceSurface->lDelta) + 2 *
- BltInfo->SourcePoint.x;
-
- DestLine = (PBYTE)BltInfo->DestSurface->pvScan0 +
- ((BltInfo->DestRect.bottom - 1) *
- BltInfo->DestSurface->lDelta) + 2 *
- BltInfo->DestRect.left;
-
- for (j = BltInfo->DestRect.bottom - 1;
- BltInfo->DestRect.top <= j; j--)
- {
- SourceBits = SourceLine;
- DestBits = DestLine;
- for (i = BltInfo->DestRect.left; i <
- BltInfo->DestRect.right; i++)
- {
- *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
- BltInfo->XlateSourceToDest,
- *((WORD *)SourceBits));
- SourceBits += 2;
- DestBits += 2;
- }
- SourceLine -= BltInfo->SourceSurface->lDelta;
- DestLine -= BltInfo->DestSurface->lDelta;
- }
- }
- }
- break;
-
- case BMF_24BPP:
- SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
- (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
- 3 * BltInfo->SourcePoint.x;
-
- DestLine = DestBits;
-
- for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
- {
- SourceBits = SourceLine;
- DestBits = DestLine;
-
- for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
- {
- xColor = (*(SourceBits + 2) << 0x10) +
- (*(SourceBits + 1) << 0x08) + (*(SourceBits));
-
- *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
- BltInfo->XlateSourceToDest, xColor);
-
- SourceBits += 3;
- DestBits += 2;
- }
- SourceLine += BltInfo->SourceSurface->lDelta;
- DestLine += BltInfo->DestSurface->lDelta;
- }
- break;
-
- case BMF_32BPP:
- SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
- (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
- 4 * BltInfo->SourcePoint.x;
-
- DestLine = DestBits;
-
- for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
- {
- SourceBits = SourceLine;
- DestBits = DestLine;
-
- for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
- {
- *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
- BltInfo->XlateSourceToDest,
- *((PDWORD) SourceBits));
- SourceBits += 4;
- DestBits += 2;
- }
-
- SourceLine += BltInfo->SourceSurface->lDelta;
- DestLine += BltInfo->DestSurface->lDelta;
- }
- break;
-
- default:
- DPRINT1("DIB_16BPP_Bitblt: Unhandled Source BPP: %u\n",
- BitsPerFormat(BltInfo->SourceSurface->iBitmapFormat));
- return FALSE;
- }
-
- return TRUE;
-}
-
-/* Optimize for bitBlt */
-BOOLEAN
-DIB_16BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
-{
- ULONG DestY;
-
-#if defined(_M_IX86) && !defined(_MSC_VER)
- /* This is about 10% faster than the generic C code below */
- ULONG delta = DestSurface->lDelta;
- ULONG width = (DestRect->right - DestRect->left) ;
- PULONG pos = (PULONG) ((PBYTE)DestSurface->pvScan0 + DestRect->top * delta + (DestRect->left<<1));
- color = (color&0xffff); /* If the color value is "abcd", put "abcdabcd" into color */
- color += (color<<16);
-
- for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
+ LONG i, j, sx, sy, xColor, f1;
+ PBYTE SourceBits, DestBits, SourceLine, DestLine;
+ PBYTE SourceBits_4BPP, SourceLine_4BPP;
+ DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + (BltInfo->DestRect.top * BltInfo->DestSurface->lDelta) + 2 * BltInfo->DestRect.left;
+
+ switch(BltInfo->SourceSurface->iBitmapFormat)
+ {
+ case BMF_1BPP:
+ sx = BltInfo->SourcePoint.x;
+ sy = BltInfo->SourcePoint.y;
+ for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
- __asm__ __volatile__ (
- " cld\n"
- " mov %1,%%ebx\n"
- " mov %2,%%edi\n"
- " test $0x03, %%edi\n" /* Align to fullword boundary */
- " jz .FL1\n"
- " stosw\n"
- " dec %%ebx\n"
- " jz .FL2\n"
- ".FL1:\n"
- " mov %%ebx,%%ecx\n" /* Setup count of fullwords to fill */
- " shr $1,%%ecx\n"
- " rep stosl\n" /* The actual fill */
- " test $0x01, %%ebx\n" /* One left to do at the right side? */
- " jz .FL2\n"
- " stosw\n"
- ".FL2:\n"
- :
- : "a" (color), "r" (width), "m" (pos)
- : "%ecx", "%ebx", "%edi");
- pos =(PULONG)((ULONG_PTR)pos + delta);
- }
-#else /* _M_IX86 */
-
- for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
- {
- DIB_16BPP_HLine (DestSurface, DestRect->left, DestRect->right, DestY, color);
- }
-#endif
- return TRUE;
-}
-/*
-=======================================
- Stretching functions goes below
- Some parts of code are based on an
- article "Bresenhame image scaling"
- Dr. Dobb Journal, May 2002
-=======================================
-*/
-
-typedef unsigned short PIXEL;
-
-/* 16-bit HiColor (565 format) */
-__inline PIXEL average16(PIXEL a, PIXEL b)
-{
-// This one should be correct, but it's too long
-/*
- unsigned char r1, g1, b1, r2, g2, b2, rr, gr, br;
- unsigned short res;
-
- r1 = (a & 0xF800) >> 11;
- g1 = (a & 0x7E0) >> 5;
- b1 = (a & 0x1F);
-
- r2 = (b & 0xF800) >> 11;
- g2 = (b & 0x7E0) >> 5;
- b2 = (b & 0x1F);
-
- rr = (r1+r2) / 2;
- gr = (g1+g2) / 2;
- br = (b1+b2) / 2;
-
- res = (rr << 11) + (gr << 5) + br;
-
- return res;
-*/
- // This one is the short form of the correct one, but does not work for QEMU (expects 555 format)
- //return (((a ^ b) & 0xf7deU) >> 1) + (a & b);
-
- //hack until short version works properly
- return a;
-}
-
-//NOTE: If you change something here, please do the same in other dibXXbpp.c files!
-void ScaleLineAvg16(PIXEL *Target, PIXEL *Source, int SrcWidth, int TgtWidth)
-{
- int NumPixels = TgtWidth;
- int IntPart = SrcWidth / TgtWidth;
- int FractPart = SrcWidth % TgtWidth;
- int Mid = TgtWidth >> 1;
- int E = 0;
- int skip;
- PIXEL p;
-
- skip = (TgtWidth < SrcWidth) ? 0 : (TgtWidth / (2*SrcWidth) + 1);
- NumPixels -= skip;
-
- while (NumPixels-- > 0)
- {
- p = *Source;
- if (E >= Mid)
+ sx = BltInfo->SourcePoint.x;
+ for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
+ {
+ if(DIB_1BPP_GetPixel(BltInfo->SourceSurface, sx, sy) == 0)
{
- p = average16(p, *(Source+1));
+ DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j,
+ XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 0));
}
- *Target++ = p;
- Source += IntPart;
- E += FractPart;
- if (E >= TgtWidth)
+ else
{
- E -= TgtWidth;
- Source++;
+ DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j,
+ XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 1));
}
+ sx++;
+ }
+ sy++;
}
- while (skip-- > 0)
- {
- *Target++ = *Source;
- }
-}
+ break;
-static BOOLEAN
-FinalCopy16(PIXEL *Target, PIXEL *Source, PSPAN ClipSpans, UINT ClipSpansCount, UINT *SpanIndex,
- UINT DestY, RECTL *DestRect)
-{
- LONG Left, Right;
+ case BMF_4BPP:
+ SourceBits_4BPP = (PBYTE)BltInfo->SourceSurface->pvScan0 +
+ (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
+ (BltInfo->SourcePoint.x >> 1);
- while ( ClipSpans[*SpanIndex].Y < DestY ||
- (ClipSpans[*SpanIndex].Y == DestY &&
- ClipSpans[*SpanIndex].X + ClipSpans[*SpanIndex].Width < DestRect->left))
+ for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
- (*SpanIndex)++;
- if (ClipSpansCount <= *SpanIndex)
+ SourceLine_4BPP = SourceBits_4BPP;
+ sx = BltInfo->SourcePoint.x;
+ f1 = sx & 1;
+
+ for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
+ {
+ xColor = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest,
+ (*SourceLine_4BPP & altnotmask[f1]) >> (4 * (1 - f1)));
+ DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j, xColor);
+ if(f1 == 1)
{
- /* No more spans, everything else is clipped away, we're done */
- return FALSE;
+ SourceLine_4BPP++;
+ f1 = 0;
}
- }
- while (ClipSpans[*SpanIndex].Y == DestY)
- {
- if (ClipSpans[*SpanIndex].X < DestRect->right)
+ else
{
- Left = max(ClipSpans[*SpanIndex].X, DestRect->left);
-
- Right = min(ClipSpans[*SpanIndex].X + ClipSpans[*SpanIndex].Width,
- DestRect->right);
-
- memcpy(Target + Left - DestRect->left, Source + Left - DestRect->left,
- (Right - Left) * sizeof(PIXEL));
- }
-
- (*SpanIndex)++;
-
- if (ClipSpansCount <= *SpanIndex)
- {
- /* No more spans, everything else is clipped away, we're done */
- return FALSE;
+ f1 = 1;
}
+ sx++;
+ }
+ SourceBits_4BPP += BltInfo->SourceSurface->lDelta;
}
+ break;
- return TRUE;
-}
+ case BMF_8BPP:
+ SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
+ (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
+ BltInfo->SourcePoint.x;
+ DestLine = DestBits;
-//NOTE: If you change something here, please do the same in other dibXXbpp.c files!
-BOOLEAN ScaleRectAvg16(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
- RECTL* DestRect, RECTL *SourceRect,
- POINTL* MaskOrigin, POINTL BrushOrigin,
- CLIPOBJ *ClipRegion, XLATEOBJ *ColorTranslation,
- ULONG Mode)
-{
- int NumPixels = DestRect->bottom - DestRect->top;
-
- int IntPart = (((SourceRect->bottom - SourceRect->top) /
- (DestRect->bottom - DestRect->top)) * SourceSurf->lDelta) >> 1;
-
- int FractPart = (SourceRect->bottom - SourceRect->top) %
- (DestRect->bottom - DestRect->top);
-
- int Mid = (DestRect->bottom - DestRect->top) >> 1;
- int E = 0;
- int skip;
- PIXEL *ScanLine, *ScanLineAhead;
- PIXEL *PrevSource = NULL;
- PIXEL *PrevSourceAhead = NULL;
-
- PIXEL *Target = (PIXEL *) ((PBYTE)DestSurf->pvScan0 + (DestRect->top *
- DestSurf->lDelta) + 2 * DestRect->left);
-
- PIXEL *Source = (PIXEL *) ((PBYTE)SourceSurf->pvScan0 + (SourceRect->top *
- SourceSurf->lDelta) + 2 * SourceRect->left);
-
- PSPAN ClipSpans;
- UINT ClipSpansCount;
- UINT SpanIndex;
- LONG DestY;
-
- if (! ClipobjToSpans(&ClipSpans, &ClipSpansCount, ClipRegion, DestRect))
+ for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
- return FALSE;
- }
- if (0 == ClipSpansCount)
- {
- /* No clip spans == empty clipping region, everything clipped away */
- ASSERT(NULL == ClipSpans);
- return TRUE;
- }
- skip = (DestRect->bottom - DestRect->top < SourceRect->bottom - SourceRect->top)
- ? 0 : ((DestRect->bottom - DestRect->top) /
- (2 * (SourceRect->bottom - SourceRect->top)) + 1);
-
- NumPixels -= skip;
-
- ScanLine = (PIXEL*)ExAllocatePool(PagedPool, (DestRect->right - DestRect->left) *
- sizeof(PIXEL));
+ SourceBits = SourceLine;
+ DestBits = DestLine;
+
+ for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
+ {
+ *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
+ BltInfo->XlateSourceToDest, *SourceBits);
+ SourceBits += 1;
+ DestBits += 2;
+ }
- ScanLineAhead = (PIXEL *)ExAllocatePool(PagedPool, (DestRect->right -
- DestRect->left) * sizeof(PIXEL));
-
- if (!ScanLine || !ScanLineAhead)
- {
- if (ScanLine) ExFreePool(ScanLine);
- if (ScanLineAhead) ExFreePool(ScanLineAhead);
- return FALSE;
+ SourceLine += BltInfo->SourceSurface->lDelta;
+ DestLine += BltInfo->DestSurface->lDelta;
}
+ break;
- DestY = DestRect->top;
- SpanIndex = 0;
- while (NumPixels-- > 0)
+ case BMF_16BPP:
+ if (NULL == BltInfo->XlateSourceToDest || 0 !=
+ (BltInfo->XlateSourceToDest->flXlate & XO_TRIVIAL))
{
- if (Source != PrevSource)
+ if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
+ {
+ SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 +
+ (BltInfo->SourcePoint.y *
+ BltInfo->SourceSurface->lDelta) + 2 *
+ BltInfo->SourcePoint.x;
+
+ for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
- if (Source == PrevSourceAhead)
- {
- /* the next scan line has already been scaled and stored in
- * ScanLineAhead; swap the buffers that ScanLine and ScanLineAhead
- * point to
- */
- PIXEL *tmp = ScanLine;
- ScanLine = ScanLineAhead;
- ScanLineAhead = tmp;
- }
- else
- {
- ScaleLineAvg16(ScanLine, Source, SourceRect->right - SourceRect->left,
- DestRect->right - DestRect->left);
- }
- PrevSource = Source;
- }
-
- if (E >= Mid && PrevSourceAhead != (PIXEL *)((BYTE *)Source +
- SourceSurf->lDelta))
- {
- int x;
-
- ScaleLineAvg16(ScanLineAhead, (PIXEL *)((BYTE *)Source +
- SourceSurf->lDelta), SourceRect->right -
- SourceRect->left, DestRect->right - DestRect->left);
+ RtlMoveMemory(DestBits, SourceBits,
+ 2 * (BltInfo->DestRect.right -
+ BltInfo->DestRect.left));
- for (x = 0; x < DestRect->right - DestRect->left; x++)
- {
- ScanLine[x] = average16(ScanLine[x], ScanLineAhead[x]);
- }
-
- PrevSourceAhead = (PIXEL *)((BYTE *)Source + SourceSurf->lDelta);
+ SourceBits += BltInfo->SourceSurface->lDelta;
+ DestBits += BltInfo->DestSurface->lDelta;
}
-
- if (! FinalCopy16(Target, ScanLine, ClipSpans, ClipSpansCount, &SpanIndex, DestY, DestRect))
+ }
+ else
+ {
+ SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 +
+ ((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom -
+ BltInfo->DestRect.top - 1) *
+ BltInfo->SourceSurface->lDelta) + 2 *
+ BltInfo->SourcePoint.x;
+
+ DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 +
+ ((BltInfo->DestRect.bottom - 1) *
+ BltInfo->DestSurface->lDelta) + 2 *
+ BltInfo->DestRect.left;
+
+ for (j = BltInfo->DestRect.bottom - 1;
+ BltInfo->DestRect.top <= j; j--)
{
- /* No more spans, everything else is clipped away, we're done */
- ExFreePool(ClipSpans);
- ExFreePool(ScanLine);
- ExFreePool(ScanLineAhead);
- return TRUE;
- }
+ RtlMoveMemory(DestBits, SourceBits, 2 *
+ (BltInfo->DestRect.right -
+ BltInfo->DestRect.left));
- DestY++;
- Target = (PIXEL *)((BYTE *)Target + DestSurf->lDelta);
- Source += IntPart;
- E += FractPart;
-
- if (E >= DestRect->bottom - DestRect->top)
- {
- E -= DestRect->bottom - DestRect->top;
- Source = (PIXEL *)((BYTE *)Source + SourceSurf->lDelta);
+ SourceBits -= BltInfo->SourceSurface->lDelta;
+ DestBits -= BltInfo->DestSurface->lDelta;
}
- } /* while */
-
- if (skip > 0 && Source != PrevSource)
- {
- ScaleLineAvg16(ScanLine, Source, SourceRect->right - SourceRect->left,
- DestRect->right - DestRect->left);
+ }
}
-
- while (skip-- > 0)
+ else
{
- if (! FinalCopy16(Target, ScanLine, ClipSpans, ClipSpansCount, &SpanIndex,
- DestY, DestRect))
+ if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
+ {
+ SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
+ (BltInfo->SourcePoint.y *
+ BltInfo->SourceSurface->lDelta) + 2 *
+ BltInfo->SourcePoint.x;
+
+ DestLine = DestBits;
+ for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
- /* No more spans, everything else is clipped away, we're done */
- ExFreePool(ClipSpans);
- ExFreePool(ScanLine);
- ExFreePool(ScanLineAhead);
- return TRUE;
+ SourceBits = SourceLine;
+ DestBits = DestLine;
+ for (i = BltInfo->DestRect.left; i <
+ BltInfo->DestRect.right; i++)
+ {
+ *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
+ BltInfo->XlateSourceToDest,
+ *((WORD *)SourceBits));
+ SourceBits += 2;
+ DestBits += 2;
+ }
+ SourceLine += BltInfo->SourceSurface->lDelta;
+ DestLine += BltInfo->DestSurface->lDelta;
}
- DestY++;
- Target = (PIXEL *)((BYTE *)Target + DestSurf->lDelta);
+ }
+ else
+ {
+ SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
+ ((BltInfo->SourcePoint.y +
+ BltInfo->DestRect.bottom -
+ BltInfo->DestRect.top - 1) *
+ BltInfo->SourceSurface->lDelta) + 2 *
+ BltInfo->SourcePoint.x;
+
+ DestLine = (PBYTE)BltInfo->DestSurface->pvScan0 +
+ ((BltInfo->DestRect.bottom - 1) *
+ BltInfo->DestSurface->lDelta) + 2 *
+ BltInfo->DestRect.left;
+
+ for (j = BltInfo->DestRect.bottom - 1;
+ BltInfo->DestRect.top <= j; j--)
+ {
+ SourceBits = SourceLine;
+ DestBits = DestLine;
+ for (i = BltInfo->DestRect.left; i <
+ BltInfo->DestRect.right; i++)
+ {
+ *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
+ BltInfo->XlateSourceToDest,
+ *((WORD *)SourceBits));
+ SourceBits += 2;
+ DestBits += 2;
+ }
+ SourceLine -= BltInfo->SourceSurface->lDelta;
+ DestLine -= BltInfo->DestSurface->lDelta;
+ }
+ }
}
+ break;
- ExFreePool(ClipSpans);
- ExFreePool(ScanLine);
- ExFreePool(ScanLineAhead);
-
- return TRUE;
-}
-
-
-//NOTE: If you change something here, please do the same in other dibXXbpp.c files!
-BOOLEAN DIB_16BPP_StretchBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
- RECTL* DestRect, RECTL *SourceRect,
- POINTL* MaskOrigin, POINTL BrushOrigin,
- CLIPOBJ *ClipRegion, XLATEOBJ *ColorTranslation,
- ULONG Mode)
-{
- LONG SrcSizeY;
- LONG SrcSizeX;
- LONG DesSizeY;
- LONG DesSizeX;
- LONG sx = 0;
- LONG sy = 0;
- LONG DesX;
- LONG DesY;
- PULONG DestBits;
- LONG DifflDelta;
-
- LONG SrcZoomXHight;
- LONG SrcZoomXLow;
- LONG SrcZoomYHight;
- LONG SrcZoomYLow;
-
- LONG sy_dec = 0;
- LONG sy_max;
-
- LONG sx_dec = 0;
- LONG sx_max;
-
- DPRINT("DIB_16BPP_StretchBlt: Source BPP: %u, srcRect: (%d,%d)-(%d,%d), dstRect: (%d,%d)-(%d,%d)\n",
- BitsPerFormat(SourceSurf->iBitmapFormat), SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
- DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
-
- /* Calc the Zoom height of Source */
- SrcSizeY = SourceRect->bottom - SourceRect->top;
-
- /* Calc the Zoom Width of Source */
- SrcSizeX = SourceRect->right - SourceRect->left;
-
- /* Calc the Zoom height of Destinations */
- DesSizeY = DestRect->bottom - DestRect->top;
-
- /* Calc the Zoom width of Destinations */
- DesSizeX = DestRect->right - DestRect->left;
+ case BMF_24BPP:
+ SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
+ (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
+ 3 * BltInfo->SourcePoint.x;
- /* Calc the zoom factor of source height */
- SrcZoomYHight = SrcSizeY / DesSizeY;
- SrcZoomYLow = SrcSizeY - (SrcZoomYHight * DesSizeY);
+ DestLine = DestBits;
- /* Calc the zoom factor of source width */
- SrcZoomXHight = SrcSizeX / DesSizeX;
- SrcZoomXLow = SrcSizeX - (SrcZoomXHight * DesSizeX);
-
- sx_max = DesSizeX;
- sy_max = DesSizeY;
- sy = SourceRect->top;
-
- DestBits = (PULONG)((PBYTE)DestSurf->pvScan0 + (DestRect->left << 1) +
- DestRect->top * DestSurf->lDelta);
-
- DifflDelta = DestSurf->lDelta - (DesSizeX << 1);
-
- switch(SourceSurf->iBitmapFormat)
+ for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
+ SourceBits = SourceLine;
+ DestBits = DestLine;
- case BMF_1BPP:
- /* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
- /* This is a reference implementation, it hasn't been optimized for speed */
-
- for (DesY=0; DesY<DesSizeY; DesY++)
- {
- sx = SourceRect->left;
- sx_dec = 0;
-
- for (DesX=0; DesX<DesSizeX; DesX++)
- {
- *DestBits = XLATEOBJ_iXlate(ColorTranslation,
- DIB_1BPP_GetPixel(SourceSurf, sx, sy));
-
- DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
-
- sx += SrcZoomXHight;
- sx_dec += SrcZoomXLow;
- if (sx_dec >= sx_max)
- {
- sx++;
- sx_dec -= sx_max;
- }
- }
-
- DestBits = (PULONG)((ULONG_PTR)DestBits + DifflDelta);
-
- sy += SrcZoomYHight;
- sy_dec += SrcZoomYLow;
- if (sy_dec >= sy_max)
- {
- sy++;
- sy_dec -= sy_max;
- }
- }
- break;
-
- case BMF_4BPP:
- /* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
- /* This is a reference implementation, it hasn't been optimized for speed */
-
- for (DesY=0; DesY<DesSizeY; DesY++)
- {
- sx = SourceRect->left;
- sx_dec = 0;
-
- for (DesX=0; DesX<DesSizeX; DesX++)
- {
- *DestBits = XLATEOBJ_iXlate(ColorTranslation,
- DIB_4BPP_GetPixel(SourceSurf, sx, sy));
-
- DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
+ for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
+ {
+ xColor = (*(SourceBits + 2) << 0x10) +
+ (*(SourceBits + 1) << 0x08) + (*(SourceBits));
- sx += SrcZoomXHight;
- sx_dec += SrcZoomXLow;
- if (sx_dec >= sx_max)
- {
- sx++;
- sx_dec -= sx_max;
- }
- }
+ *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
+ BltInfo->XlateSourceToDest, xColor);
- DestBits = (PULONG)((ULONG_PTR)DestBits + DifflDelta);
-
- sy += SrcZoomYHight;
- sy_dec += SrcZoomYLow;
- if (sy_dec >= sy_max)
- {
- sy++;
- sy_dec -= sy_max;
- }
- }
- break;
-
- case BMF_8BPP:
- /* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
- /* This is a reference implementation, it hasn't been optimized for speed */
-
- for (DesY=0; DesY<DesSizeY; DesY++)
- {
- sx = SourceRect->left;
- sx_dec = 0;
-
- for (DesX=0; DesX<DesSizeX; DesX++)
- {
- *DestBits = XLATEOBJ_iXlate(ColorTranslation,
- DIB_8BPP_GetPixel(SourceSurf, sx, sy));
-
- DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
-
- sx += SrcZoomXHight;
- sx_dec += SrcZoomXLow;
- if (sx_dec >= sx_max)
- {
- sx++;
- sx_dec -= sx_max;
- }
- }
-
- DestBits = (PULONG)((ULONG_PTR)DestBits + DifflDelta);
-
- sy += SrcZoomYHight;
- sy_dec += SrcZoomYLow;
- if (sy_dec >= sy_max)
- {
- sy++;
- sy_dec -= sy_max;
- }
- }
- break;
-
-
- case BMF_24BPP:
- /* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
- /* This is a reference implementation, it hasn't been optimized for speed */
-
- DestBits = (PULONG)((PBYTE)DestSurf->pvScan0 + (DestRect->left << 1) +
- DestRect->top * DestSurf->lDelta);
-
- DifflDelta = DestSurf->lDelta - (DesSizeX << 1);
-
- for (DesY=0; DesY<DesSizeY; DesY++)
- {
- sx = SourceRect->left;
- sx_dec = 0;
-
- for (DesX=0; DesX<DesSizeX; DesX++)
- {
- *DestBits = XLATEOBJ_iXlate(ColorTranslation,
- DIB_24BPP_GetPixel(SourceSurf, sx, sy));
-
- DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
-
- sx += SrcZoomXHight;
- sx_dec += SrcZoomXLow;
- if (sx_dec >= sx_max)
- {
- sx++;
- sx_dec -= sx_max;
- }
- }
-
- DestBits = (PULONG)((ULONG_PTR)DestBits + DifflDelta);
-
- sy += SrcZoomYHight;
- sy_dec += SrcZoomYLow;
- if (sy_dec >= sy_max)
- {
- sy++;
- sy_dec -= sy_max;
- }
- }
- break;
-
- case BMF_32BPP:
- /* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
- /* This is a reference implementation, it hasn't been optimized for speed */
-
- for (DesY=0; DesY<DesSizeY; DesY++)
- {
- sx = SourceRect->left;
- sx_dec = 0;
+ SourceBits += 3;
+ DestBits += 2;
+ }
+ SourceLine += BltInfo->SourceSurface->lDelta;
+ DestLine += BltInfo->DestSurface->lDelta;
+ }
+ break;
- for (DesX=0; DesX<DesSizeX; DesX++)
- {
- *DestBits = XLATEOBJ_iXlate(ColorTranslation,
- DIB_32BPP_GetPixel(SourceSurf, sx, sy));
+ case BMF_32BPP:
+ SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
+ (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
+ 4 * BltInfo->SourcePoint.x;
- DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
+ DestLine = DestBits;
- sx += SrcZoomXHight;
- sx_dec += SrcZoomXLow;
- if (sx_dec >= sx_max)
- {
- sx++;
- sx_dec -= sx_max;
- }
- }
- DestBits = (PULONG)((ULONG_PTR)DestBits + DifflDelta);
+ for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
+ {
+ SourceBits = SourceLine;
+ DestBits = DestLine;
+
+ for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
+ {
+ *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
+ BltInfo->XlateSourceToDest,
+ *((PDWORD) SourceBits));
+ SourceBits += 4;
+ DestBits += 2;
+ }
- sy += SrcZoomYHight;
- sy_dec += SrcZoomYLow;
- if (sy_dec >= sy_max)
- {
- sy++;
- sy_dec -= sy_max;
- }
- }
- break;
+ SourceLine += BltInfo->SourceSurface->lDelta;
+ DestLine += BltInfo->DestSurface->lDelta;
+ }
+ break;
- case BMF_16BPP:
- return ScaleRectAvg16(DestSurf, SourceSurf, DestRect, SourceRect, MaskOrigin, BrushOrigin,
- ClipRegion, ColorTranslation, Mode);
- break;
+ default:
+ DPRINT1("DIB_16BPP_Bitblt: Unhandled Source BPP: %u\n",
+ BitsPerFormat(BltInfo->SourceSurface->iBitmapFormat));
+ return FALSE;
+ }
- default:
- DPRINT1("DIB_16BPP_StretchBlt: Unhandled Source BPP: %u\n", BitsPerFormat(SourceSurf->iBitmapFormat));
- return FALSE;
- }
+ return TRUE;
+}
+/* Optimize for bitBlt */
+BOOLEAN
+DIB_16BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
+{
+ ULONG DestY;
+#if defined(_M_IX86) && !defined(_MSC_VER)
+ /* This is about 10% faster than the generic C code below */
+ ULONG delta = DestSurface->lDelta;
+ ULONG width = (DestRect->right - DestRect->left) ;
+ PULONG pos = (PULONG) ((PBYTE)DestSurface->pvScan0 + DestRect->top * delta + (DestRect->left<<1));
+ color = (color&0xffff); /* If the color value is "abcd", put "abcdabcd" into color */
+ color += (color<<16);
+
+ for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
+ {
+ __asm__ __volatile__ (
+ " cld\n"
+ " mov %1,%%ebx\n"
+ " mov %2,%%edi\n"
+ " test $0x03, %%edi\n" /* Align to fullword boundary */
+ " jz .FL1\n"
+ " stosw\n"
+ " dec %%ebx\n"
+ " jz .FL2\n"
+ ".FL1:\n"
+ " mov %%ebx,%%ecx\n" /* Setup count of fullwords to fill */
+ " shr $1,%%ecx\n"
+ " rep stosl\n" /* The actual fill */
+ " test $0x01, %%ebx\n" /* One left to do at the right side? */
+ " jz .FL2\n"
+ " stosw\n"
+ ".FL2:\n"
+ :
+ : "a" (color), "r" (width), "m" (pos)
+ : "%ecx", "%ebx", "%edi");
+ pos =(PULONG)((ULONG_PTR)pos + delta);
+ }
+#else /* _M_IX86 */
+ for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
+ {
+ DIB_16BPP_HLine (DestSurface, DestRect->left, DestRect->right, DestY, color);
+ }
+#endif
return TRUE;
}
BOOLEAN
DIB_16BPP_TransparentBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
- RECTL* DestRect, POINTL *SourcePoint,
+ RECTL* DestRect, RECTL *SourceRect,
XLATEOBJ *ColorTranslation, ULONG iTransColor)
{
- ULONG RoundedRight, X, Y, SourceX, SourceY, Source, wd, Dest;
- ULONG *DestBits;
-
- RoundedRight = DestRect->right - ((DestRect->right - DestRect->left) & 0x1);
- SourceY = SourcePoint->y;
- DestBits = (ULONG*)((PBYTE)DestSurf->pvScan0 +
- (DestRect->left << 1) +
- DestRect->top * DestSurf->lDelta);
- wd = DestSurf->lDelta - ((DestRect->right - DestRect->left) << 1);
-
- for(Y = DestRect->top; Y < DestRect->bottom; Y++)
+ ULONG RoundedRight, X, Y, SourceX = 0, SourceY = 0, Source, wd, Dest;
+ ULONG *DestBits;
+
+ LONG DstHeight;
+ LONG DstWidth;
+ LONG SrcHeight;
+ LONG SrcWidth;
+
+ DstHeight = DestRect->bottom - DestRect->top;
+ DstWidth = DestRect->right - DestRect->left;
+ SrcHeight = SourceRect->bottom - SourceRect->top;
+ SrcWidth = SourceRect->right - SourceRect->left;
+
+ RoundedRight = DestRect->right - ((DestRect->right - DestRect->left) & 0x1);
+ DestBits = (ULONG*)((PBYTE)DestSurf->pvScan0 +
+ (DestRect->left << 1) +
+ DestRect->top * DestSurf->lDelta);
+ wd = DestSurf->lDelta - ((DestRect->right - DestRect->left) << 1);
+
+ for(Y = DestRect->top; Y < DestRect->bottom; Y++)
+ {
+ SourceY = SourceRect->top+(Y - DestRect->top) * SrcHeight / DstHeight;
+ for(X = DestRect->left; X < RoundedRight; X += 2, DestBits++, SourceX += 2)
{
- SourceX = SourcePoint->x;
- for(X = DestRect->left; X < RoundedRight; X += 2, DestBits++, SourceX += 2)
+ Dest = *DestBits;
+
+ SourceX = SourceRect->left+(X - DestRect->left) * SrcWidth / DstWidth;
+ if (SourceX >= 0 && SourceY >= 0 &&
+ SourceSurf->sizlBitmap.cx > SourceX && SourceSurf->sizlBitmap.cy > SourceY)
+ {
+ Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
+ if(Source != iTransColor)
{
- Dest = *DestBits;
- Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
-
- if(Source != iTransColor)
- {
- Dest &= 0xFFFF0000;
- Dest |= (XLATEOBJ_iXlate(ColorTranslation, Source) & 0xFFFF);
- }
-
- Source = DIB_GetSourceIndex(SourceSurf, SourceX + 1, SourceY);
- if(Source != iTransColor)
- {
- Dest &= 0xFFFF;
- Dest |= (XLATEOBJ_iXlate(ColorTranslation, Source) << 16);
- }
-
- *DestBits = Dest;
- }
-
- if(X < DestRect->right)
- {
- Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
- if(Source != iTransColor)
- {
- *((USHORT*)DestBits) = (USHORT)XLATEOBJ_iXlate(ColorTranslation,
- Source);
- }
-
- DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
- }
-
- SourceY++;
- DestBits = (ULONG*)((ULONG_PTR)DestBits + wd);
+ Dest &= 0xFFFF0000;
+ Dest |= (XLATEOBJ_iXlate(ColorTranslation, Source) & 0xFFFF);
}
+ }
- return TRUE;
-}
-
-typedef union
-{
- ULONG ul;
- struct
- {
- UCHAR red;
- UCHAR green;
- UCHAR blue;
- UCHAR alpha;
- } col;
-} NICEPIXEL32;
-
-typedef union
-{
- USHORT us;
- struct
- {
- USHORT red:5,
- green:6,
- blue:5;
- } col;
-} NICEPIXEL16;
-
-static __inline UCHAR
-Clamp5(ULONG val)
-{
- return (val > 31) ? 31 : val;
-}
-
-static __inline UCHAR
-Clamp6(ULONG val)
-{
- return (val > 63) ? 63 : val;
-}
-
-BOOLEAN
-DIB_16BPP_AlphaBlend(SURFOBJ* Dest, SURFOBJ* Source, RECTL* DestRect,
- RECTL* SourceRect, CLIPOBJ* ClipRegion,
- XLATEOBJ* ColorTranslation, BLENDOBJ* BlendObj)
-{
- INT Rows, Cols, SrcX, SrcY;
- register PUSHORT Dst;
- ULONG DstDelta;
- BLENDFUNCTION BlendFunc;
- register NICEPIXEL16 DstPixel;
- register NICEPIXEL32 SrcPixel;
- UCHAR Alpha, SrcBpp;
-
- DPRINT("DIB_16BPP_AlphaBlend: srcRect: (%d,%d)-(%d,%d), dstRect: (%d,%d)-(%d,%d)\n",
- SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
- DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
-
- ASSERT(DestRect->bottom - DestRect->top == SourceRect->bottom - SourceRect->top &&
- DestRect->right - DestRect->left == SourceRect->right - SourceRect->left);
+ SourceX = SourceRect->left+(X+1 - DestRect->left) * SrcWidth / DstWidth;
+ if (SourceX >= 0 && SourceY >= 0 &&
+ SourceSurf->sizlBitmap.cx > SourceX && SourceSurf->sizlBitmap.cy > SourceY)
+ {
+ Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
+ if(Source != iTransColor)
+ {
+ Dest &= 0xFFFF;
+ Dest |= (XLATEOBJ_iXlate(ColorTranslation, Source) << 16);
+ }
+ }
- BlendFunc = BlendObj->BlendFunction;
- if (BlendFunc.BlendOp != AC_SRC_OVER)
- {
- DPRINT1("BlendOp != AC_SRC_OVER\n");
- return FALSE;
- }
- if (BlendFunc.BlendFlags != 0)
- {
- DPRINT1("BlendFlags != 0\n");
- return FALSE;
- }
- if ((BlendFunc.AlphaFormat & ~AC_SRC_ALPHA) != 0)
- {
- DPRINT1("Unsupported AlphaFormat (0x%x)\n", BlendFunc.AlphaFormat);
- return FALSE;
- }
- if ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0 &&
- BitsPerFormat(Source->iBitmapFormat) != 32)
- {
- DPRINT1("Source bitmap must be 32bpp when AC_SRC_ALPHA is set\n");
- return FALSE;
+ *DestBits = Dest;
}
- Dst = (PUSHORT)((ULONG_PTR)Dest->pvScan0 + (DestRect->top * Dest->lDelta) +
- (DestRect->left << 1));
- DstDelta = Dest->lDelta - ((DestRect->right - DestRect->left) << 1);
- SrcBpp = BitsPerFormat(Source->iBitmapFormat);
-
- Rows = DestRect->bottom - DestRect->top;
- SrcY = SourceRect->top;
- while (--Rows >= 0)
+ if(X < DestRect->right)
{
- Cols = DestRect->right - DestRect->left;
- SrcX = SourceRect->left;
- while (--Cols >= 0)
+ SourceX = SourceRect->left+(X - DestRect->left) * SrcWidth / DstWidth;
+ if (SourceX >= 0 && SourceY >= 0 &&
+ SourceSurf->sizlBitmap.cx > SourceX && SourceSurf->sizlBitmap.cy > SourceY)
+ {
+ Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
+ if(Source != iTransColor)
{
- if (SrcBpp <= 16)
- {
- DstPixel.us = DIB_GetSource(Source, SrcX++, SrcY, ColorTranslation);
- SrcPixel.col.red = (DstPixel.col.red << 3) | (DstPixel.col.red >> 2);
-
- SrcPixel.col.green = (DstPixel.col.green << 2) |
- (DstPixel.col.green >> 4);
-
- SrcPixel.col.blue = (DstPixel.col.blue << 3) | (DstPixel.col.blue >> 2);
- }
- else
- {
- SrcPixel.ul = DIB_GetSourceIndex(Source, SrcX++, SrcY);
- }
- SrcPixel.col.red = SrcPixel.col.red *
- BlendFunc.SourceConstantAlpha / 255;
-
- SrcPixel.col.green = SrcPixel.col.green *
- BlendFunc.SourceConstantAlpha / 255;
-
- SrcPixel.col.blue = SrcPixel.col.blue *
- BlendFunc.SourceConstantAlpha / 255;
-
- SrcPixel.col.alpha = (SrcBpp == 32) ?
- (SrcPixel.col.alpha *
- BlendFunc.SourceConstantAlpha / 255) :
- BlendFunc.SourceConstantAlpha;
-
- Alpha = ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0) ?
- SrcPixel.col.alpha : BlendFunc.SourceConstantAlpha;
-
- DstPixel.us = *Dst;
- DstPixel.col.red = Clamp5(DstPixel.col.red * (255 - Alpha) / 255 +
- (SrcPixel.col.red >> 3));
-
- DstPixel.col.green = Clamp6(DstPixel.col.green * (255 - Alpha) / 255 +
- (SrcPixel.col.green >> 2));
-
- DstPixel.col.blue = Clamp5(DstPixel.col.blue * (255 - Alpha) / 255 +
- (SrcPixel.col.blue >> 3));
-
- *Dst++ = DstPixel.us;
+ *((USHORT*)DestBits) = (USHORT)XLATEOBJ_iXlate(ColorTranslation,
+ Source);
+ }
}
- Dst = (PUSHORT)((ULONG_PTR)Dst + DstDelta);
- SrcY++;
+ DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
}
- return TRUE;
+ DestBits = (ULONG*)((ULONG_PTR)DestBits + wd);
+ }
+
+ return TRUE;
}
/* EOF */
projects / reactos.git / blobdiff