mirror of
https://github.com/reactos/reactos.git
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1199 lines
38 KiB
C
1199 lines
38 KiB
C
/*
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* ReactOS W32 Subsystem
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <w32k.h>
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#define NDEBUG
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#include <debug.h>
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VOID
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DIB_16BPP_PutPixel(SURFOBJ *SurfObj, LONG x, LONG y, ULONG c)
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{
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PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta;
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PWORD addr = (PWORD)byteaddr + x;
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*addr = (WORD)c;
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}
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ULONG
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DIB_16BPP_GetPixel(SURFOBJ *SurfObj, LONG x, LONG y)
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{
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PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta;
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PWORD addr = (PWORD)byteaddr + x;
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return (ULONG)(*addr);
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}
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VOID
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DIB_16BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
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{
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PDWORD addr = (PDWORD)((PWORD)((PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta) + x1);
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#if defined(_M_IX86) && !defined(_MSC_VER)
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/* This is about 10% faster than the generic C code below */
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LONG Count = x2 - x1;
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__asm__ __volatile__ (
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" cld\n"
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" mov %0, %%eax\n"
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" shl $16, %%eax\n"
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" andl $0xffff, %0\n" /* If the pixel value is "abcd", put "abcdabcd" in %eax */
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" or %0, %%eax\n"
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" mov %2, %%edi\n"
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" test $0x03, %%edi\n" /* Align to fullword boundary */
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" jz 0f\n"
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" stosw\n"
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" dec %1\n"
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" jz 1f\n"
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"0:\n"
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" mov %1,%%ecx\n" /* Setup count of fullwords to fill */
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" shr $1,%%ecx\n"
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" rep stosl\n" /* The actual fill */
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" test $0x01, %1\n" /* One left to do at the right side? */
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" jz 1f\n"
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" stosw\n"
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"1:\n"
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: /* no output */
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: "r"(c), "r"(Count), "m"(addr)
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: "%eax", "%ecx", "%edi");
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#else /* _M_IX86 */
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LONG cx = x1;
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DWORD cc;
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if (0 != (cx & 0x01))
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{
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*((PWORD) addr) = c;
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cx++;
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addr = (PDWORD)((PWORD)(addr) + 1);
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}
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cc = ((c & 0xffff) << 16) | (c & 0xffff);
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while(cx + 1 < x2)
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{
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*addr++ = cc;
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cx += 2;
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}
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if (cx < x2)
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{
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*((PWORD) addr) = c;
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}
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#endif /* _M_IX86 */
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}
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VOID
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DIB_16BPP_VLine(SURFOBJ *SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
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{
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#if defined(_M_IX86) && !defined(_MSC_VER)
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asm volatile(
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" testl %2, %2" "\n\t"
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" jle 2f" "\n\t"
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" movl %2, %%ecx" "\n\t"
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" shrl $2, %2" "\n\t"
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" andl $3, %%ecx" "\n\t"
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" jz 1f" "\n\t"
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"0:" "\n\t"
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" movw %%ax, (%0)" "\n\t"
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" addl %1, %0" "\n\t"
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" decl %%ecx" "\n\t"
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" jnz 0b" "\n\t"
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" testl %2, %2" "\n\t"
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" jz 2f" "\n\t"
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"1:" "\n\t"
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" movw %%ax, (%0)" "\n\t"
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" addl %1, %0" "\n\t"
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" movw %%ax, (%0)" "\n\t"
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" addl %1, %0" "\n\t"
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" movw %%ax, (%0)" "\n\t"
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" addl %1, %0" "\n\t"
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" movw %%ax, (%0)" "\n\t"
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" addl %1, %0" "\n\t"
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" decl %2" "\n\t"
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" jnz 1b" "\n\t"
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"2:" "\n\t"
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: /* no output */
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: "r"((PBYTE)SurfObj->pvScan0 + (y1 * SurfObj->lDelta) + (x * sizeof (WORD))),
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"r"(SurfObj->lDelta), "r"(y2 - y1), "a"(c)
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: "cc", "memory", "%ecx");
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#else
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PBYTE byteaddr = (PBYTE)(ULONG_PTR)SurfObj->pvScan0 + y1 * SurfObj->lDelta;
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PWORD addr = (PWORD)byteaddr + x;
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LONG lDelta = SurfObj->lDelta;
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byteaddr = (PBYTE)addr;
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while(y1++ < y2)
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{
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*addr = (WORD)c;
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byteaddr += lDelta;
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addr = (PWORD)byteaddr;
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}
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#endif
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}
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BOOLEAN
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DIB_16BPP_BitBltSrcCopy(PBLTINFO BltInfo)
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{
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LONG i, j, sx, sy, xColor, f1;
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PBYTE SourceBits, DestBits, SourceLine, DestLine;
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PBYTE SourceBits_4BPP, SourceLine_4BPP;
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DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + (BltInfo->DestRect.top * BltInfo->DestSurface->lDelta) + 2 * BltInfo->DestRect.left;
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switch(BltInfo->SourceSurface->iBitmapFormat)
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{
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case BMF_1BPP:
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sx = BltInfo->SourcePoint.x;
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sy = BltInfo->SourcePoint.y;
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for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
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{
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sx = BltInfo->SourcePoint.x;
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for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
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{
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if(DIB_1BPP_GetPixel(BltInfo->SourceSurface, sx, sy) == 0)
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{
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DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j,
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XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 0));
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}
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else
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{
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DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j,
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XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 1));
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}
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sx++;
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}
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sy++;
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}
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break;
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case BMF_4BPP:
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SourceBits_4BPP = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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(BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
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(BltInfo->SourcePoint.x >> 1);
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for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
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{
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SourceLine_4BPP = SourceBits_4BPP;
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sx = BltInfo->SourcePoint.x;
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f1 = sx & 1;
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for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
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{
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xColor = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest,
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(*SourceLine_4BPP & altnotmask[f1]) >> (4 * (1 - f1)));
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DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j, xColor);
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if(f1 == 1)
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{
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SourceLine_4BPP++;
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f1 = 0;
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}
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else
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{
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f1 = 1;
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}
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sx++;
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}
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SourceBits_4BPP += BltInfo->SourceSurface->lDelta;
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}
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break;
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case BMF_8BPP:
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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(BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
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BltInfo->SourcePoint.x;
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DestLine = DestBits;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
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{
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*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
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BltInfo->XlateSourceToDest, *SourceBits);
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SourceBits += 1;
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DestBits += 2;
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}
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SourceLine += BltInfo->SourceSurface->lDelta;
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DestLine += BltInfo->DestSurface->lDelta;
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}
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break;
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case BMF_16BPP:
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if (NULL == BltInfo->XlateSourceToDest || 0 !=
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(BltInfo->XlateSourceToDest->flXlate & XO_TRIVIAL))
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{
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if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
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{
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SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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(BltInfo->SourcePoint.y *
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BltInfo->SourceSurface->lDelta) + 2 *
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BltInfo->SourcePoint.x;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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RtlMoveMemory(DestBits, SourceBits,
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2 * (BltInfo->DestRect.right -
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BltInfo->DestRect.left));
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SourceBits += BltInfo->SourceSurface->lDelta;
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DestBits += BltInfo->DestSurface->lDelta;
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}
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}
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else
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{
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SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom -
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BltInfo->DestRect.top - 1) *
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BltInfo->SourceSurface->lDelta) + 2 *
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BltInfo->SourcePoint.x;
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DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 +
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((BltInfo->DestRect.bottom - 1) *
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BltInfo->DestSurface->lDelta) + 2 *
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BltInfo->DestRect.left;
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for (j = BltInfo->DestRect.bottom - 1;
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BltInfo->DestRect.top <= j; j--)
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{
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RtlMoveMemory(DestBits, SourceBits, 2 *
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(BltInfo->DestRect.right -
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BltInfo->DestRect.left));
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SourceBits -= BltInfo->SourceSurface->lDelta;
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DestBits -= BltInfo->DestSurface->lDelta;
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}
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}
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}
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else
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{
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if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
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{
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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(BltInfo->SourcePoint.y *
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BltInfo->SourceSurface->lDelta) + 2 *
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BltInfo->SourcePoint.x;
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DestLine = DestBits;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = BltInfo->DestRect.left; i <
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BltInfo->DestRect.right; i++)
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{
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*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
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BltInfo->XlateSourceToDest,
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*((WORD *)SourceBits));
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SourceBits += 2;
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DestBits += 2;
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}
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SourceLine += BltInfo->SourceSurface->lDelta;
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DestLine += BltInfo->DestSurface->lDelta;
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}
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}
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else
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{
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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((BltInfo->SourcePoint.y +
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BltInfo->DestRect.bottom -
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BltInfo->DestRect.top - 1) *
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BltInfo->SourceSurface->lDelta) + 2 *
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BltInfo->SourcePoint.x;
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DestLine = (PBYTE)BltInfo->DestSurface->pvScan0 +
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((BltInfo->DestRect.bottom - 1) *
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BltInfo->DestSurface->lDelta) + 2 *
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BltInfo->DestRect.left;
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for (j = BltInfo->DestRect.bottom - 1;
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BltInfo->DestRect.top <= j; j--)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = BltInfo->DestRect.left; i <
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BltInfo->DestRect.right; i++)
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{
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*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
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BltInfo->XlateSourceToDest,
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*((WORD *)SourceBits));
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SourceBits += 2;
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DestBits += 2;
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}
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SourceLine -= BltInfo->SourceSurface->lDelta;
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DestLine -= BltInfo->DestSurface->lDelta;
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}
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}
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}
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break;
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case BMF_24BPP:
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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(BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
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3 * BltInfo->SourcePoint.x;
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DestLine = DestBits;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
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{
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xColor = (*(SourceBits + 2) << 0x10) +
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(*(SourceBits + 1) << 0x08) + (*(SourceBits));
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*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
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BltInfo->XlateSourceToDest, xColor);
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SourceBits += 3;
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DestBits += 2;
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}
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SourceLine += BltInfo->SourceSurface->lDelta;
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DestLine += BltInfo->DestSurface->lDelta;
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}
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break;
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case BMF_32BPP:
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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(BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
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4 * BltInfo->SourcePoint.x;
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DestLine = DestBits;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
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{
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*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
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BltInfo->XlateSourceToDest,
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*((PDWORD) SourceBits));
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SourceBits += 4;
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DestBits += 2;
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}
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SourceLine += BltInfo->SourceSurface->lDelta;
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DestLine += BltInfo->DestSurface->lDelta;
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}
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break;
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default:
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DPRINT1("DIB_16BPP_Bitblt: Unhandled Source BPP: %u\n",
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BitsPerFormat(BltInfo->SourceSurface->iBitmapFormat));
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return FALSE;
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}
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return TRUE;
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}
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/* Optimize for bitBlt */
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BOOLEAN
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DIB_16BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
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{
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ULONG DestY;
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#if defined(_M_IX86) && !defined(_MSC_VER)
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/* This is about 10% faster than the generic C code below */
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ULONG delta = DestSurface->lDelta;
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ULONG width = (DestRect->right - DestRect->left) ;
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PULONG pos = (PULONG) ((PBYTE)DestSurface->pvScan0 + DestRect->top * delta + (DestRect->left<<1));
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color = (color&0xffff); /* If the color value is "abcd", put "abcdabcd" into color */
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color += (color<<16);
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for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
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{
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__asm__ __volatile__ (
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" cld\n"
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" mov %1,%%ebx\n"
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" mov %2,%%edi\n"
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" test $0x03, %%edi\n" /* Align to fullword boundary */
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" jz .FL1\n"
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" stosw\n"
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" dec %%ebx\n"
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" jz .FL2\n"
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".FL1:\n"
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" mov %%ebx,%%ecx\n" /* Setup count of fullwords to fill */
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" shr $1,%%ecx\n"
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" rep stosl\n" /* The actual fill */
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" test $0x01, %%ebx\n" /* One left to do at the right side? */
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" jz .FL2\n"
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" stosw\n"
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".FL2:\n"
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:
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: "a" (color), "r" (width), "m" (pos)
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: "%ecx", "%ebx", "%edi");
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pos =(PULONG)((ULONG_PTR)pos + delta);
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}
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#else /* _M_IX86 */
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for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
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{
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DIB_16BPP_HLine (DestSurface, DestRect->left, DestRect->right, DestY, color);
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}
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#endif
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return TRUE;
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}
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/*
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=======================================
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Stretching functions goes below
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|
Some parts of code are based on an
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article "Bresenhame image scaling"
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Dr. Dobb Journal, May 2002
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|
=======================================
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*/
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typedef unsigned short PIXEL;
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|
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/* 16-bit HiColor (565 format) */
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__inline PIXEL average16(PIXEL a, PIXEL b)
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{
|
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// This one doesn't work
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/*
|
|
if (a == b)
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{
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return a;
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}
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|
else
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{
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unsigned short mask = ~ (((a | b) & 0x0410) << 1);
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return ((a & mask) + (b & mask)) >> 1;
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}*/ /* if */
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|
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// This one should be correct, but it's too long
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|
/*
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|
unsigned char r1, g1, b1, r2, g2, b2, rr, gr, br;
|
|
unsigned short res;
|
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|
|
r1 = (a & 0xF800) >> 11;
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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;
|
|
*/
|
|
return a; // FIXME: Depend on SetStretchMode
|
|
}
|
|
|
|
//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)
|
|
{
|
|
p = average16(p, *(Source+1));
|
|
}
|
|
*Target++ = p;
|
|
Source += IntPart;
|
|
E += FractPart;
|
|
if (E >= TgtWidth)
|
|
{
|
|
E -= TgtWidth;
|
|
Source++;
|
|
}
|
|
}
|
|
while (skip-- > 0)
|
|
{
|
|
*Target++ = *Source;
|
|
}
|
|
}
|
|
|
|
static BOOLEAN
|
|
FinalCopy16(PIXEL *Target, PIXEL *Source, PSPAN ClipSpans, UINT ClipSpansCount, UINT *SpanIndex,
|
|
UINT DestY, RECTL *DestRect)
|
|
{
|
|
LONG Left, Right;
|
|
|
|
while ( ClipSpans[*SpanIndex].Y < DestY ||
|
|
(ClipSpans[*SpanIndex].Y == DestY &&
|
|
ClipSpans[*SpanIndex].X + ClipSpans[*SpanIndex].Width < DestRect->left))
|
|
{
|
|
(*SpanIndex)++;
|
|
if (ClipSpansCount <= *SpanIndex)
|
|
{
|
|
/* No more spans, everything else is clipped away, we're done */
|
|
return FALSE;
|
|
}
|
|
}
|
|
while (ClipSpans[*SpanIndex].Y == DestY)
|
|
{
|
|
if (ClipSpans[*SpanIndex].X < DestRect->right)
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
//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))
|
|
{
|
|
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));
|
|
|
|
ScanLineAhead = (PIXEL *)ExAllocatePool(PagedPool, (DestRect->right -
|
|
DestRect->left) * sizeof(PIXEL));
|
|
|
|
DestY = DestRect->top;
|
|
SpanIndex = 0;
|
|
while (NumPixels-- > 0)
|
|
{
|
|
if (Source != PrevSource)
|
|
{
|
|
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);
|
|
|
|
for (x = 0; x < DestRect->right - DestRect->left; x++)
|
|
{
|
|
ScanLine[x] = average16(ScanLine[x], ScanLineAhead[x]);
|
|
}
|
|
|
|
PrevSourceAhead = (PIXEL *)((BYTE *)Source + SourceSurf->lDelta);
|
|
}
|
|
|
|
if (! FinalCopy16(Target, ScanLine, ClipSpans, ClipSpansCount, &SpanIndex, DestY, DestRect))
|
|
{
|
|
/* No more spans, everything else is clipped away, we're done */
|
|
ExFreePool(ClipSpans);
|
|
ExFreePool(ScanLine);
|
|
ExFreePool(ScanLineAhead);
|
|
return TRUE;
|
|
}
|
|
|
|
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);
|
|
}
|
|
} /* while */
|
|
|
|
if (skip > 0 && Source != PrevSource)
|
|
{
|
|
ScaleLineAvg16(ScanLine, Source, SourceRect->right - SourceRect->left,
|
|
DestRect->right - DestRect->left);
|
|
}
|
|
|
|
while (skip-- > 0)
|
|
{
|
|
if (! FinalCopy16(Target, ScanLine, ClipSpans, ClipSpansCount, &SpanIndex,
|
|
DestY, DestRect))
|
|
{
|
|
/* No more spans, everything else is clipped away, we're done */
|
|
ExFreePool(ClipSpans);
|
|
ExFreePool(ScanLine);
|
|
ExFreePool(ScanLineAhead);
|
|
return TRUE;
|
|
}
|
|
DestY++;
|
|
Target = (PIXEL *)((BYTE *)Target + DestSurf->lDelta);
|
|
}
|
|
|
|
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 Destions */
|
|
DesSizeY = DestRect->bottom - DestRect->top;
|
|
|
|
/* Calc the Zoom width of Destions */
|
|
DesSizeX = DestRect->right - DestRect->left;
|
|
|
|
/* Calc the zoom factor of soruce height */
|
|
SrcZoomYHight = SrcSizeY / DesSizeY;
|
|
SrcZoomYLow = SrcSizeY - (SrcZoomYHight * DesSizeY);
|
|
|
|
/* Calc the zoom factor of soruce 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)
|
|
{
|
|
|
|
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);
|
|
|
|
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_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;
|
|
|
|
for (DesX=0; DesX<DesSizeX; DesX++)
|
|
{
|
|
*DestBits = XLATEOBJ_iXlate(ColorTranslation,
|
|
DIB_32BPP_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_16BPP:
|
|
return ScaleRectAvg16(DestSurf, SourceSurf, DestRect, SourceRect, MaskOrigin, BrushOrigin,
|
|
ClipRegion, ColorTranslation, Mode);
|
|
break;
|
|
|
|
default:
|
|
DPRINT1("DIB_16BPP_StretchBlt: Unhandled Source BPP: %u\n", BitsPerFormat(SourceSurf->iBitmapFormat));
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
BOOLEAN
|
|
DIB_16BPP_TransparentBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
|
|
RECTL* DestRect, POINTL *SourcePoint,
|
|
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++)
|
|
{
|
|
SourceX = SourcePoint->x;
|
|
for(X = DestRect->left; X < RoundedRight; X += 2, DestBits++, SourceX += 2)
|
|
{
|
|
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);
|
|
}
|
|
|
|
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);
|
|
|
|
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;
|
|
}
|
|
|
|
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)
|
|
{
|
|
Cols = DestRect->right - DestRect->left;
|
|
SrcX = SourceRect->left;
|
|
while (--Cols >= 0)
|
|
{
|
|
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;
|
|
}
|
|
|
|
Dst = (PUSHORT)((ULONG_PTR)Dst + DstDelta);
|
|
SrcY++;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* EOF */
|