Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-08-10 07:03:02 +00:00
Code Issues Projects Releases Packages Wiki Activity

Optimized DstInvert32

Browse source 
svn path=/trunk/; revision=15769
This commit is contained in:
Alex Ionescu 2005-06-04 13:20:34 +00:00
parent e13bb66f6e
commit e24313d28a
1 changed files with 28 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

47
reactos/subsys/win32k/dib/dib32bpp.c
View file

@ -398,32 +398,41 @@ DIB_32BPP_BitBlt(PBLTINFO BltInfo)
} }
/* optimze functions for bitblt */ /* optimze functions for bitblt */
BOOLEAN VOID
FASTCALL
DIB_32DstInvert(PBLTINFO BltInfo) DIB_32DstInvert(PBLTINFO BltInfo)
{ {
// return(~Dest);
ULONG DestX, DestY;
ULONG Dest;
PULONG DestBits; PULONG DestBits;
ULONG top = BltInfo->DestRect.top;
ULONG bottom = BltInfo->DestRect.left;
ULONG DestX = BltInfo->DestRect.right - left;
ULONG DestY = BltInfo->DestRect.bottom - top;
ULONG delta = BltInfo->DestSurface->lDelta - (DestX << 2);
ULONG bottom = BltInfo->DestRect.bottom; /* Calculate the Initial Destination */
ULONG right = BltInfo->DestRect.right; DestBits = (PULONG)(BltInfo->DestSurface->pvScan0 + (left << 2) +
ULONG delta = BltInfo->DestSurface->lDelta - ((BltInfo->DestRect.right - BltInfo->DestRect.left) <<2) ; top * BltInfo->DestSurface->lDelta);
DestBits = (PULONG)(BltInfo->DestSurface->pvScan0 + (BltInfo->DestRect.left << 2) + do while (DestY > 0)
BltInfo->DestRect.top * BltInfo->DestSurface->lDelta); {
do while (DestX > 0)
for (DestY = BltInfo->DestRect.top; DestY < bottom; DestY++) {
{ /* Invert bits */
for (DestX = BltInfo->DestRect.left; DestX < right; DestX++, DestBits++) *DestBits =~ *DestBits;
{
Dest = *DestBits; /* Update Position */
*DestBits = ~Dest; DestBits++;
}
/* Decrease distance to do */
DestX--;
}
DestBits = (PULONG)((ULONG_PTR)DestBits + delta); /* Update position */
DestBits = (PULONG)((ULONG_PTR)DestBits + delta);
/* Decrease distance to do */
DestY--;
} }
return TRUE;
} }
BOOLEAN BOOLEAN