#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;
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));
}