1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/*
* 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, Bool rotate)
{
int paddedWidth;
void *buf;
int width = rotate ? screen->height : screen->width;
int height = rotate ? screen->width : screen->height;
int bpp = screen->fb.bitsPerPixel;
/* use fb computation for width */
paddedWidth = ((width * bpp + FB_MASK) >> FB_SHIFT) * sizeof(FbBits);
buf = xallocarray(paddedWidth, height);
if (!buf)
return FALSE;
if (screen->fb.shadow)
free(screen->fb.frameBuffer);
screen->fb.shadow = TRUE;
screen->fb.frameBuffer = buf;
screen->fb.byteStride = paddedWidth;
screen->fb.pixelStride = paddedWidth * 8 / bpp;
return TRUE;
}
void
KdShadowFbFree(KdScreenInfo * screen)
{
if (screen->fb.shadow) {
free(screen->fb.frameBuffer);
screen->fb.frameBuffer = 0;
screen->fb.shadow = FALSE;
}
}
Bool
KdShadowSet(ScreenPtr pScreen, int randr, ShadowUpdateProc update,
ShadowWindowProc window)
{
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
shadowRemove(pScreen, pScreen->GetScreenPixmap(pScreen));
if (screen->fb.shadow) {
return shadowAdd(pScreen, pScreen->GetScreenPixmap(pScreen),
update, window, randr, 0);
}
return TRUE;
}
void
KdShadowUnset(ScreenPtr pScreen)
{
shadowRemove(pScreen, pScreen->GetScreenPixmap(pScreen));
}
|
