84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*
|
|
* Copyright © 1999 Keith Packard
|
|
*
|
|
* Permission to use, copy, modify, distribute, and sell this software and its
|
|
* documentation for any purpose is hereby granted without fee, provided that
|
|
* the above copyright notice appear in all copies and that both that
|
|
* copyright notice and this permission notice appear in supporting
|
|
* documentation, and that the name of Keith Packard not be used in
|
|
* advertising or publicity pertaining to distribution of the software without
|
|
* specific, written prior permission. Keith Packard makes no
|
|
* representations about the suitability of this software for any purpose. It
|
|
* is provided "as is" without express or implied warranty.
|
|
*
|
|
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
|
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
|
|
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
|
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
* PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <kdrive-config.h>
|
|
#endif
|
|
#include "kdrive.h"
|
|
|
|
Bool
|
|
KdShadowFbAlloc (KdScreenInfo *screen, int fb, Bool rotate)
|
|
{
|
|
int paddedWidth;
|
|
void *buf;
|
|
int width = rotate ? screen->height : screen->width;
|
|
int height = rotate ? screen->width : screen->height;
|
|
int bpp = screen->fb[fb].bitsPerPixel;
|
|
|
|
/* use fb computation for width */
|
|
paddedWidth = ((width * bpp + FB_MASK) >> FB_SHIFT) * sizeof (FbBits);
|
|
buf = xalloc (paddedWidth * height);
|
|
if (!buf)
|
|
return FALSE;
|
|
if (screen->fb[fb].shadow)
|
|
xfree (screen->fb[fb].frameBuffer);
|
|
screen->fb[fb].shadow = TRUE;
|
|
screen->fb[fb].frameBuffer = buf;
|
|
screen->fb[fb].byteStride = paddedWidth;
|
|
screen->fb[fb].pixelStride = paddedWidth * 8 / bpp;
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
KdShadowFbFree (KdScreenInfo *screen, int fb)
|
|
{
|
|
if (screen->fb[fb].shadow)
|
|
{
|
|
xfree (screen->fb[fb].frameBuffer);
|
|
screen->fb[fb].frameBuffer = 0;
|
|
screen->fb[fb].shadow = FALSE;
|
|
}
|
|
}
|
|
|
|
Bool
|
|
KdShadowSet (ScreenPtr pScreen, int randr, ShadowUpdateProc update, ShadowWindowProc window)
|
|
{
|
|
KdScreenPriv(pScreen);
|
|
KdScreenInfo *screen = pScreenPriv->screen;
|
|
int fb;
|
|
|
|
shadowRemove (pScreen, pScreen->GetScreenPixmap(pScreen));
|
|
for (fb = 0; fb < KD_MAX_FB && screen->fb[fb].depth; fb++)
|
|
{
|
|
if (screen->fb[fb].shadow)
|
|
return shadowAdd (pScreen, pScreen->GetScreenPixmap(pScreen),
|
|
update, window, randr, 0);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
KdShadowUnset (ScreenPtr pScreen)
|
|
{
|
|
shadowRemove(pScreen, pScreen->GetScreenPixmap(pScreen));
|
|
}
|