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/*
*Copyright (C) 2001-2004 Harold L Hunt II All Rights Reserved.
*
*Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
*"Software"), to deal in the Software without restriction, including
*without limitation the rights to use, copy, modify, merge, publish,
*distribute, sublicense, and/or sell copies of the Software, and to
*permit persons to whom the Software is furnished to do so, subject to
*the following conditions:
*
*The above copyright notice and this permission notice shall be
*included in all copies or substantial portions of the Software.
*
*THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
*EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
*MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
*NONINFRINGEMENT. IN NO EVENT SHALL HAROLD L HUNT II BE LIABLE FOR
*ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
*CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
*WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*Except as contained in this notice, the name of Harold L Hunt II
*shall not be used in advertising or otherwise to promote the sale, use
*or other dealings in this Software without prior written authorization
*from Harold L Hunt II.
*
* Authors: Harold L Hunt II
*/
#ifdef HAVE_XWIN_CONFIG_H
#include <xwin-config.h>
#endif
#include "win.h"
/*
* Count the number of one bits in a color mask.
*/
CARD8
winCountBits(DWORD dw)
{
DWORD dwBits = 0;
while (dw) {
dwBits += (dw & 1);
dw >>= 1;
}
return dwBits;
}
/*
* Modify the screen pixmap to point to the new framebuffer address
*/
Bool
winUpdateFBPointer(ScreenPtr pScreen, void *pbits)
{
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
/* Location of shadow framebuffer has changed */
pScreenInfo->pfb = pbits;
/* Update the screen pixmap */
if (!(*pScreen->ModifyPixmapHeader) (pScreen->devPrivate,
pScreen->width,
pScreen->height,
pScreen->rootDepth,
BitsPerPixel(pScreen->rootDepth),
PixmapBytePad(pScreenInfo->dwStride,
pScreenInfo->dwBPP),
pScreenInfo->pfb)) {
FatalError("winUpdateFramebufferPointer - Failed modifying "
"screen pixmap\n");
}
return TRUE;
}
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