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winex11.drv: Added a basic client-side DIB copy optimization.

This commit is contained in:
Damjan Jovanovic 2006-11-04 09:54:59 +02:00 committed by Alexandre Julliard
parent 66f45a5b7d
commit 54fd8b3d14
1 changed files with 94 additions and 1 deletions
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95
dlls/winex11.drv/bitblt.c
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@ -2,6 +2,7 @@
* GDI bit-blit operations
*
* Copyright 1993, 1994 Alexandre Julliard
* Copyright 2006 Damjan Jovanovic
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -1525,6 +1526,93 @@ BOOL X11DRV_PatBlt( X11DRV_PDEVICE *physDev, INT left, INT top, INT width, INT h
}
/***********************************************************************
* X11DRV_ClientSideDIBCopy
*/
static BOOL X11DRV_ClientSideDIBCopy( X11DRV_PDEVICE *physDevSrc, INT xSrc, INT ySrc,
X11DRV_PDEVICE *physDevDst, INT xDst, INT yDst,
INT width, INT height )
{
DIBSECTION srcDib, dstDib;
BYTE *srcPtr, *dstPtr;
INT bytesPerPixel;
INT bytesToCopy;
INT y;
static RECT unusedRect;
if (GetObjectW(physDevSrc->bitmap->hbitmap, sizeof(srcDib), &srcDib) != sizeof(srcDib))
return FALSE;
if (GetObjectW(physDevDst->bitmap->hbitmap, sizeof(dstDib), &dstDib) != sizeof(dstDib))
return FALSE;
/* check for oversized values, just like X11DRV_DIB_CopyDIBSection() */
if (xSrc > srcDib.dsBm.bmWidth || ySrc > srcDib.dsBm.bmHeight)
return FALSE;
if (xSrc + width > srcDib.dsBm.bmWidth)
width = srcDib.dsBm.bmWidth - xSrc;
if (ySrc + height > srcDib.dsBm.bmHeight)
height = srcDib.dsBm.bmHeight - ySrc;
if (GetRgnBox(physDevSrc->region, &unusedRect) == COMPLEXREGION ||
GetRgnBox(physDevDst->region, &unusedRect) == COMPLEXREGION)
{
/* for simple regions, the clipping was already done by BITBLT_GetVisRectangles */
FIXME("potential optimization: client-side complex region clipping\n");
return FALSE;
}
if (dstDib.dsBm.bmBitsPixel <= 8)
{
FIXME("potential optimization: client-side color-index mode DIB copy\n");
return FALSE;
}
if (!(srcDib.dsBmih.biCompression == BI_BITFIELDS &&
dstDib.dsBmih.biCompression == BI_BITFIELDS &&
!memcmp(srcDib.dsBitfields, dstDib.dsBitfields, 3*sizeof(DWORD)))
&& !(srcDib.dsBmih.biCompression == BI_RGB &&
dstDib.dsBmih.biCompression == BI_RGB))
{
FIXME("potential optimization: client-side compressed DIB copy\n");
return FALSE;
}
if (srcDib.dsBm.bmHeight < 0 || dstDib.dsBm.bmHeight < 0)
{
FIXME("potential optimization: client-side bottom-up DIB copy\n");
return FALSE;
}
switch (dstDib.dsBm.bmBitsPixel)
{
case 15:
case 16:
bytesPerPixel = 2;
break;
case 24:
bytesPerPixel = 3;
break;
case 32:
bytesPerPixel = 4;
break;
default:
FIXME("don't know how to work with a depth of %d\n", physDevSrc->depth);
return FALSE;
}
bytesToCopy = width * bytesPerPixel;
srcPtr = &physDevSrc->bitmap->base[ySrc*srcDib.dsBm.bmWidthBytes + xSrc*bytesPerPixel];
dstPtr = &physDevDst->bitmap->base[yDst*dstDib.dsBm.bmWidthBytes + xDst*bytesPerPixel];
for (y = yDst; y < yDst + height; ++y)
{
memcpy(dstPtr, srcPtr, bytesToCopy);
srcPtr += srcDib.dsBm.bmWidthBytes;
dstPtr += dstDib.dsBm.bmWidthBytes;
}
return TRUE;
}
/***********************************************************************
* X11DRV_BitBlt
*/
@ -1587,7 +1675,12 @@ BOOL X11DRV_BitBlt( X11DRV_PDEVICE *physDevDst, INT xDst, INT yDst,
height = visRectDst.bottom - visRectDst.top;
if (sDst == DIB_Status_AppMod) {
FIXME("potential optimization - client-side DIB copy\n");
result = X11DRV_ClientSideDIBCopy( physDevSrc, xSrc, ySrc,
physDevDst, xDst, yDst,
width, height );
if (result)
goto END;
/* fall back to X server copying */
}
X11DRV_CoerceDIBSection( physDevDst, DIB_Status_GdiMod, FALSE );