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reactos/win32ss/gdi/dib/dib16bpp.c
Hermès Bélusca-Maïto 9393fc320e
[FORMATTING] Remove trailing whitespace. Addendum to 34593d93. 
Excluded: 3rd-party code (incl. wine) and most of the win32ss.
2021-09-13 03:52:22 +02:00

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C
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/*
* PROJECT: Win32 subsystem
* LICENSE: See COPYING in the top level directory
* FILE: win32ss/gdi/dib/dib16bpp.c
* PURPOSE: Device Independant Bitmap functions, 16bpp
* PROGRAMMERS: Jason Filby
* Thomas Bluemel
* Gregor Anich
* Doug Lyons
*/
#include <win32k.h>
#define NDEBUG
#include <debug.h>
#define DEC_OR_INC(var, decTrue, amount) \
((var) = (decTrue) ? ((var) - (amount)) : ((var) + (amount)))
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;
*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);
}
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);
#if defined(_M_IX86) && !defined(_MSC_VER)
/* This is about 10% faster than the generic C code below */
LONG Count = x2 - x1;
__asm__ __volatile__ (
" cld\n"
" mov %0, %%eax\n"
" shl $16, %%eax\n"
" andl $0xffff, %0\n" /* If the pixel value is "abcd", put "abcdabcd" in %eax */
" or %0, %%eax\n"
" mov %2, %%edi\n"
" test $0x03, %%edi\n" /* Align to fullword boundary */
" jz 0f\n"
" stosw\n"
" dec %1\n"
" jz 1f\n"
"0:\n"
" mov %1,%%ecx\n" /* Setup count of fullwords to fill */
" shr $1,%%ecx\n"
" rep stosl\n" /* The actual fill */
" test $0x01, %1\n" /* One left to do at the right side? */
" jz 1f\n"
" stosw\n"
"1:\n"
: /* no output */
: "r"(c), "r"(Count), "m"(addr)
: "%eax", "%ecx", "%edi");
#else /* _M_IX86 */
LONG cx = x1;
DWORD cc;
if (0 != (cx & 0x01))
{
*((PWORD) addr) = (WORD)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) = (WORD)c;
}
#endif /* _M_IX86 */
}
VOID
DIB_16BPP_VLine(SURFOBJ *SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
{
#if defined(_M_IX86) && !defined(_MSC_VER)
asm volatile(
" testl %2, %2" "\n\t"
" jle 2f" "\n\t"
" movl %2, %%ecx" "\n\t"
" shrl $2, %2" "\n\t"
" andl $3, %%ecx" "\n\t"
" jz 1f" "\n\t"
"0:" "\n\t"
" movw %%ax, (%0)" "\n\t"
" addl %1, %0" "\n\t"
" decl %%ecx" "\n\t"
" jnz 0b" "\n\t"
" testl %2, %2" "\n\t"
" jz 2f" "\n\t"
"1:" "\n\t"
" movw %%ax, (%0)" "\n\t"
" addl %1, %0" "\n\t"
" movw %%ax, (%0)" "\n\t"
" addl %1, %0" "\n\t"
" movw %%ax, (%0)" "\n\t"
" addl %1, %0" "\n\t"
" movw %%ax, (%0)" "\n\t"
" addl %1, %0" "\n\t"
" decl %2" "\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)
: "cc", "memory", "%ecx");
#else
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 += 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;
PWORD Source32, Dest32;
DWORD Index, StartLeft, EndRight;
BOOLEAN bTopToBottom, bLeftToRight;
DPRINT("DIB_16BPP_BitBltSrcCopy: SrcSurf cx/cy (%d/%d), DestSuft cx/cy (%d/%d) dstRect: (%d,%d)-(%d,%d)\n",
BltInfo->SourceSurface->sizlBitmap.cx, BltInfo->SourceSurface->sizlBitmap.cy,
BltInfo->DestSurface->sizlBitmap.cx, BltInfo->DestSurface->sizlBitmap.cy,
BltInfo->DestRect.left, BltInfo->DestRect.top, BltInfo->DestRect.right, BltInfo->DestRect.bottom);
/* Get back left to right flip here */
bLeftToRight = BltInfo->DestRect.left > BltInfo->DestRect.right;
/* Check for top to bottom flip needed. */
bTopToBottom = BltInfo->DestRect.top > BltInfo->DestRect.bottom;
DPRINT("BltInfo->SourcePoint.x is '%d' & BltInfo->SourcePoint.y is '%d'.\n",
BltInfo->SourcePoint.x, BltInfo->SourcePoint.y);
/* Make WellOrdered with top < bottom and left < right */
RECTL_vMakeWellOrdered(&BltInfo->DestRect);
DPRINT("BPP is '%d/%d' & BltInfo->SourcePoint.x is '%d' & BltInfo->SourcePoint.y is '%d'.\n",
BltInfo->SourceSurface->iBitmapFormat, BltInfo->SourcePoint.x, BltInfo->SourcePoint.y);
DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + (BltInfo->DestRect.top * BltInfo->DestSurface->lDelta) + 2 * BltInfo->DestRect.left;
switch(BltInfo->SourceSurface->iBitmapFormat)
{
case BMF_1BPP:
DPRINT("1BPP Case Selected with DestRect Width of '%d'.\n",
BltInfo->DestRect.right - BltInfo->DestRect.left);
sx = BltInfo->SourcePoint.x;
/* This sets sy to the top line */
sy = BltInfo->SourcePoint.y;
if (bTopToBottom)
{
/* This sets sy to the bottom line */
sy += BltInfo->SourceSurface->lDelta * (BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1);
}
for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
sx = BltInfo->SourcePoint.x;
if (bLeftToRight)
{
/* This sets the sx to the rightmost pixel */
sx += (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
StartLeft = BltInfo->DestRect.left + 1;
EndRight = BltInfo->DestRect.right + 1;
}
else
{
StartLeft = BltInfo->DestRect.left;
EndRight = BltInfo->DestRect.right;
}
for (i = StartLeft; i < EndRight; 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));
}
DEC_OR_INC(sx, bLeftToRight, 1);
}
DEC_OR_INC(sy, bTopToBottom, 1);
}
break;
case BMF_4BPP:
DPRINT("4BPP Case Selected with DestRect Width of '%d'.\n",
BltInfo->DestRect.right - BltInfo->DestRect.left);
/* This sets SourceBits_4BPP to the top line */
SourceBits_4BPP = (PBYTE)BltInfo->SourceSurface->pvScan0 +
(BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
(BltInfo->SourcePoint.x >> 1);
if (bTopToBottom)
{
/* This sets SourceBits_4BPP to the bottom line */
SourceBits_4BPP += (BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1) * BltInfo->SourceSurface->lDelta;
}
for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
SourceLine_4BPP = SourceBits_4BPP;
sx = BltInfo->SourcePoint.x;
if (bLeftToRight)
{
/* This sets sx to the rightmost pixel */
sx += (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
}
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)
{
DEC_OR_INC(SourceLine_4BPP, bLeftToRight, 1);
f1 = 0;
}
else
{
f1 = 1;
}
DEC_OR_INC(sx, bLeftToRight, 1);
}
DEC_OR_INC(SourceBits_4BPP, bTopToBottom, BltInfo->SourceSurface->lDelta);
}
break;
case BMF_8BPP:
DPRINT("8BPP Case Selected with DestRect Width of '%d'.\n",
BltInfo->DestRect.right - BltInfo->DestRect.left);
/* This sets SourceLine to the top line */
SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
(BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
BltInfo->SourcePoint.x;
DestLine = DestBits;
if (bTopToBottom)
{
/* This sets SourceLine to the bottom line */
SourceLine += BltInfo->SourceSurface->lDelta
* (BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1);
}
for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
SourceBits = SourceLine;
DestBits = DestLine;
if (bLeftToRight)
{
/* This sets SourceBits to the rightmost pixel */
SourceBits += (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
}
for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
{
*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
BltInfo->XlateSourceToDest, *SourceBits);
DEC_OR_INC(SourceBits, bLeftToRight, 1);
DestBits += 2;
}
DEC_OR_INC(SourceLine, bTopToBottom, BltInfo->SourceSurface->lDelta);
DestLine += BltInfo->DestSurface->lDelta;
}
break;
case BMF_16BPP:
DPRINT("16BPP Case Selected with DestRect Width of '%d'.\n",
BltInfo->DestRect.right - BltInfo->DestRect.left);
DPRINT("BMF_16BPP-dstRect: (%d,%d)-(%d,%d) and Width of '%d'.\n",
BltInfo->DestRect.left, BltInfo->DestRect.top,
BltInfo->DestRect.right, BltInfo->DestRect.bottom,
BltInfo->DestRect.right - BltInfo->DestRect.left);
if ((BltInfo->XlateSourceToDest == NULL ||
(BltInfo->XlateSourceToDest->flXlate & XO_TRIVIAL) != 0) &&
(!bTopToBottom && !bLeftToRight))
{
DPRINT("XO_TRIVIAL is TRUE.\n");
if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
{
/* This sets SourceBits to the top line */
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
{
/* This sets SourceBits to the bottom line */
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
{
DPRINT("XO_TRIVIAL is NOT TRUE.\n");
if (!bTopToBottom && !bLeftToRight)
/* **Note: Indent is purposefully less than desired to keep reviewable differences to a minimum for PR** */
{
DPRINT("Flip is None.\n");
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;
}
}
}
else
{
/* Buffering for source and destination flip overlaps. Fixes KHMZ MirrorTest CORE-16642 */
BOOL TopToBottomDone = FALSE;
if (bLeftToRight)
{
DPRINT("Flip is bLeftToRight.\n");
/* Allocate enough pixels for a row in WORD's */
WORD *store = ExAllocatePoolWithTag(NonPagedPool,
(BltInfo->DestRect.right - BltInfo->DestRect.left + 1) * 2, TAG_DIB);
if (store == NULL)
{
DPRINT1("Storage Allocation Failed.\n");
return FALSE;
}
WORD Index;
/* This sets SourceBits to the bottom line */
SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0
+ ((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1)
* BltInfo->SourceSurface->lDelta) + 2 * BltInfo->SourcePoint.x;
/* Sets DestBits to the bottom line */
DestBits = (PBYTE)BltInfo->DestSurface->pvScan0
+ (BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta
+ 2 * BltInfo->DestRect.left + 2;
for (j = BltInfo->DestRect.bottom - 1; BltInfo->DestRect.top <= j; j--)
{
/* Set Dest32 to right pixel */
Dest32 = (WORD *) DestBits + (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
Source32 = (WORD *) SourceBits;
Index = 0;
/* Store pixels from left to right */
for (i = BltInfo->DestRect.right - 1; BltInfo->DestRect.left <= i; i--)
{
store[Index] = (WORD)XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *(WORD *)Source32++);
Index++;
}
Index = 0;
/* Copy stored data to pixels from right to left */
for (i = BltInfo->DestRect.right - 1; BltInfo->DestRect.left <= i; i--)
{
*(WORD *)Dest32-- = store[Index];
Index++;
}
SourceBits -= BltInfo->SourceSurface->lDelta;
DestBits -= BltInfo->DestSurface->lDelta;
}
ExFreePoolWithTag(store, TAG_DIB);
TopToBottomDone = TRUE;
}
if (bTopToBottom)
{
DPRINT("Flip is bTopToBottom.\n");
/* Allocate enough pixels for a column in WORD's */
WORD *store = ExAllocatePoolWithTag(NonPagedPool,
(BltInfo->DestRect.bottom - BltInfo->DestRect.top + 1) * 2, TAG_DIB);
if (store == NULL)
{
DPRINT1("Storage Allocation Failed.\n");
return FALSE;
}
/* This set SourceBits to the top line */
SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0
+ (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta)
+ 2 * BltInfo->SourcePoint.x;
/* This sets DestBits to the top line */
DestBits = (PBYTE)BltInfo->DestSurface->pvScan0
+ ((BltInfo->DestRect.top) * BltInfo->DestSurface->lDelta)
+ 2 * BltInfo->DestRect.left;
if ((BltInfo->SourceSurface->fjBitmap & BMF_TOPDOWN) == 0)
{
DestBits += BltInfo->DestSurface->lDelta;
}
if (bLeftToRight)
{
DPRINT("Adjusting DestBits for bLeftToRight.\n");
DestBits += 2;
}
/* The TopToBottomDone flag indicates that we are flipping for bTopToBottom and bLeftToRight
* and have already completed the bLeftToRight. So we will lose our first flip output
* unless we work with its output which is at the destination site. So in this case
* our new Source becomes the previous outputs Destination. */
if (TopToBottomDone)
{
/* This sets SourceBits to the top line */
SourceBits = DestBits;
}
for (j = BltInfo->DestRect.right - 1; BltInfo->DestRect.left <= j ; j--)
{
/* Set Dest32 to bottom pixel */
Dest32 = (WORD *) DestBits + (BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1)
* BltInfo->DestSurface->lDelta / 2;
Source32 = (WORD *) SourceBits;
Index = 0;
/* Store pixels from top to bottom */
for (i = BltInfo->DestRect.top; i <= BltInfo->DestRect.bottom - 1; i++)
{
store[Index] = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *Source32);
Source32 += BltInfo->SourceSurface->lDelta / 2;
Index++;
}
Index = 0;
/* Copy stored data to pixels from bottom to top */
for (i = BltInfo->DestRect.bottom - 1; BltInfo->DestRect.top <= i; i--)
{
*Dest32 = store[Index];
Dest32 -= BltInfo->DestSurface->lDelta / 2;
Index++;
}
SourceBits += 2;
DestBits += 2;
}
ExFreePoolWithTag(store, TAG_DIB);
}
}
}
break;
case BMF_24BPP:
DPRINT("BMF_24BPP-dstRect: (%d,%d)-(%d,%d) and Width of '%d'.\n",
BltInfo->DestRect.left, BltInfo->DestRect.top,
BltInfo->DestRect.right, BltInfo->DestRect.bottom,
BltInfo->DestRect.right - BltInfo->DestRect.left);
/* This sets SourceLine to the top line */
SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
(BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
3 * BltInfo->SourcePoint.x;
if (bTopToBottom)
{
/* This sets SourceLine to the bottom line */
SourceLine += BltInfo->SourceSurface->lDelta * (BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1);
}
DestLine = DestBits;
for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
SourceBits = SourceLine;
DestBits = DestLine;
if (bLeftToRight)
{
/* This sets the SourceBits to the rightmost pixel */
SourceBits += (BltInfo->DestRect.right - BltInfo->DestRect.left - 1) * 3;
}
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);
DEC_OR_INC(SourceBits, bLeftToRight, 3);
DestBits += 2;
}
DEC_OR_INC(SourceLine, bTopToBottom, BltInfo->SourceSurface->lDelta);
DestLine += BltInfo->DestSurface->lDelta;
}
break;
case BMF_32BPP:
DPRINT("32BPP Case Selected with DestRect Width of '%d'.\n",
BltInfo->DestRect.right - BltInfo->DestRect.left);
SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
(BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
4 * BltInfo->SourcePoint.x;
if (bTopToBottom)
{
/* This sets SourceLine to the bottom line */
SourceLine += BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1;
}
DestLine = DestBits;
for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
SourceBits = SourceLine;
DestBits = DestLine;
if (bLeftToRight)
{
/* This sets SourceBits to the rightmost pixel */
SourceBits += (BltInfo->DestRect.right - BltInfo->DestRect.left - 1) * 4;
}
for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
{
*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
BltInfo->XlateSourceToDest,
*((PDWORD) SourceBits));
DEC_OR_INC(SourceBits, bLeftToRight, 4);
DestBits += 2;
}
DEC_OR_INC(SourceLine, bTopToBottom, BltInfo->SourceSurface->lDelta);
DestLine += BltInfo->DestSurface->lDelta;
}
break;
default:
DPRINT1("DIB_16BPP_BitBltSrcCopy: 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)
{
LONG DestY;
/* Make WellOrdered with top < bottom and left < right */
RECTL_vMakeWellOrdered(DestRect);
#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\t"
"mov %1,%%ebx\n\t"
"mov %2,%%edi\n\t"
"test $0x03, %%edi\n\t" /* Align to fullword boundary */
"jz 1f\n\t"
"stosw\n\t"
"dec %%ebx\n\t"
"jz 2f\n"
"1:\n\t"
"mov %%ebx,%%ecx\n\t" /* Setup count of fullwords to fill */
"shr $1,%%ecx\n\t"
"rep stosl\n\t" /* The actual fill */
"test $0x01, %%ebx\n\t" /* One left to do at the right side? */
"jz 2f\n\t"
"stosw\n"
"2:"
:
: "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, RECTL *SourceRect,
XLATEOBJ *ColorTranslation, ULONG iTransColor)
{
LONG RoundedRight, X, Y, SourceX = 0, SourceY = 0, wd;
ULONG *DestBits, Source, Dest;
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)
{
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 &= 0xFFFF0000;
Dest |= (XLATEOBJ_iXlate(ColorTranslation, Source) & 0xFFFF);
}
}
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);
}
}
*DestBits = Dest;
}
if(X < DestRect->right)
{
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)
{
*((USHORT*)DestBits) = (USHORT)XLATEOBJ_iXlate(ColorTranslation,
Source);
}
}
DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
}
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 blue :5;
USHORT green :6;
USHORT red :5;
} col;
} NICEPIXEL16_565;
typedef union
{
USHORT us;
struct
{
USHORT blue :5;
USHORT green :5;
USHORT red :5;
USHORT xxxx :1;
} col;
} NICEPIXEL16_555;
static __inline UCHAR
Clamp6(ULONG val)
{
return (val > 63) ? 63 : (UCHAR)val;
}
static __inline UCHAR
Clamp5(ULONG val)
{
return (val > 31) ? 31 : (UCHAR)val;
}
BOOLEAN
DIB_16BPP_AlphaBlend(SURFOBJ* Dest, SURFOBJ* Source, RECTL* DestRect,
RECTL* SourceRect, CLIPOBJ* ClipRegion,
XLATEOBJ* ColorTranslation, BLENDOBJ* BlendObj)
{
INT DstX, DstY, SrcX, SrcY;
BLENDFUNCTION BlendFunc;
NICEPIXEL32 SrcPixel32;
UCHAR Alpha;
EXLATEOBJ* pexlo;
EXLATEOBJ exloSrcRGB;
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);
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;
}
if (!ColorTranslation)
{
DPRINT1("ColorTranslation must not be NULL!\n");
return FALSE;
}
pexlo = CONTAINING_RECORD(ColorTranslation, EXLATEOBJ, xlo);
EXLATEOBJ_vInitialize(&exloSrcRGB, pexlo->ppalSrc, &gpalRGB, 0, 0, 0);
if (pexlo->ppalDst->flFlags & PAL_RGB16_555)
{
NICEPIXEL16_555 DstPixel16;
SrcY = SourceRect->top;
DstY = DestRect->top;
while ( DstY < DestRect->bottom )
{
SrcX = SourceRect->left;
DstX = DestRect->left;
while(DstX < DestRect->right)
{
SrcPixel32.ul = DIB_GetSource(Source, SrcX, SrcY, &exloSrcRGB.xlo);
SrcPixel32.col.red = (SrcPixel32.col.red * BlendFunc.SourceConstantAlpha) / 255;
SrcPixel32.col.green = (SrcPixel32.col.green * BlendFunc.SourceConstantAlpha) / 255;
SrcPixel32.col.blue = (SrcPixel32.col.blue * BlendFunc.SourceConstantAlpha) / 255;
Alpha = ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0) ?
(SrcPixel32.col.alpha * BlendFunc.SourceConstantAlpha) / 255 :
BlendFunc.SourceConstantAlpha;
Alpha >>= 3;
DstPixel16.us = DIB_16BPP_GetPixel(Dest, DstX, DstY) & 0xFFFF;
/* Perform bit loss */
SrcPixel32.col.red >>= 3;
SrcPixel32.col.green >>= 3;
SrcPixel32.col.blue >>= 3;
/* Do the blend in the right bit depth */
DstPixel16.col.red = Clamp5((DstPixel16.col.red * (31 - Alpha)) / 31 + SrcPixel32.col.red);
DstPixel16.col.green = Clamp5((DstPixel16.col.green * (31 - Alpha)) / 31 + SrcPixel32.col.green);
DstPixel16.col.blue = Clamp5((DstPixel16.col.blue * (31 - Alpha)) / 31 + SrcPixel32.col.blue);
DIB_16BPP_PutPixel(Dest, DstX, DstY, DstPixel16.us);
DstX++;
SrcX = SourceRect->left + ((DstX-DestRect->left)*(SourceRect->right - SourceRect->left))
/(DestRect->right-DestRect->left);
}
DstY++;
SrcY = SourceRect->top + ((DstY-DestRect->top)*(SourceRect->bottom - SourceRect->top))
/(DestRect->bottom-DestRect->top);
}
}
else
{
NICEPIXEL16_565 DstPixel16;
UCHAR Alpha6, Alpha5;
SrcY = SourceRect->top;
DstY = DestRect->top;
while ( DstY < DestRect->bottom )
{
SrcX = SourceRect->left;
DstX = DestRect->left;
while(DstX < DestRect->right)
{
SrcPixel32.ul = DIB_GetSource(Source, SrcX, SrcY, &exloSrcRGB.xlo);
SrcPixel32.col.red = (SrcPixel32.col.red * BlendFunc.SourceConstantAlpha) / 255;
SrcPixel32.col.green = (SrcPixel32.col.green * BlendFunc.SourceConstantAlpha) / 255;
SrcPixel32.col.blue = (SrcPixel32.col.blue * BlendFunc.SourceConstantAlpha) / 255;
Alpha = ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0) ?
(SrcPixel32.col.alpha * BlendFunc.SourceConstantAlpha) / 255 :
BlendFunc.SourceConstantAlpha;
Alpha6 = Alpha >> 2;
Alpha5 = Alpha >> 3;
DstPixel16.us = DIB_16BPP_GetPixel(Dest, DstX, DstY) & 0xFFFF;
/* Perform bit loss */
SrcPixel32.col.red >>= 3;
SrcPixel32.col.green >>= 2;
SrcPixel32.col.blue >>= 3;
/* Do the blend in the right bit depth */
DstPixel16.col.red = Clamp5((DstPixel16.col.red * (31 - Alpha5)) / 31 + SrcPixel32.col.red);
DstPixel16.col.green = Clamp6((DstPixel16.col.green * (63 - Alpha6)) / 63 + SrcPixel32.col.green);
DstPixel16.col.blue = Clamp5((DstPixel16.col.blue * (31 - Alpha5)) / 31 + SrcPixel32.col.blue);
DIB_16BPP_PutPixel(Dest, DstX, DstY, DstPixel16.us);
DstX++;
SrcX = SourceRect->left + ((DstX-DestRect->left)*(SourceRect->right - SourceRect->left))
/(DestRect->right-DestRect->left);
}
DstY++;
SrcY = SourceRect->top + ((DstY-DestRect->top)*(SourceRect->bottom - SourceRect->top))
/(DestRect->bottom-DestRect->top);
}
}
EXLATEOBJ_vCleanup(&exloSrcRGB);
return TRUE;
}
/* EOF */
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