repositories / deb_xorg-server.git / blame
| Commit | Line | Data |
|---|---|---|
| a09e091a JB |
1 | /* |
| 2 | * Copyright © 1999 Keith Packard | |
| 3 | * | |
| 4 | * Permission to use, copy, modify, distribute, and sell this software and its | |
| 5 | * documentation for any purpose is hereby granted without fee, provided that | |
| 6 | * the above copyright notice appear in all copies and that both that | |
| 7 | * copyright notice and this permission notice appear in supporting | |
| 8 | * documentation, and that the name of Keith Packard not be used in | |
| 9 | * advertising or publicity pertaining to distribution of the software without | |
| 10 | * specific, written prior permission. Keith Packard makes no | |
| 11 | * representations about the suitability of this software for any purpose. It | |
| 12 | * is provided "as is" without express or implied warranty. | |
| 13 | * | |
| 14 | * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
| 15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
| 16 | * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
| 17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
| 18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
| 19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |
| 20 | * PERFORMANCE OF THIS SOFTWARE. | |
| 21 | */ | |
| 22 | ||
| 23 | #ifdef HAVE_CONFIG_H | |
| 24 | #include <kdrive-config.h> | |
| 25 | #endif | |
| 26 | #include "kdrive.h" | |
| 27 | ||
| 28 | Bool | |
| 29 | KdShadowFbAlloc(KdScreenInfo * screen, Bool rotate) | |
| 30 | { | |
| 31 | int paddedWidth; | |
| 32 | void *buf; | |
| 33 | int width = rotate ? screen->height : screen->width; | |
| 34 | int height = rotate ? screen->width : screen->height; | |
| 35 | int bpp = screen->fb.bitsPerPixel; | |
| 36 | ||
| 37 | /* use fb computation for width */ | |
| 38 | paddedWidth = ((width * bpp + FB_MASK) >> FB_SHIFT) * sizeof(FbBits); | |
| 39 | buf = malloc(paddedWidth * height); | |
| 40 | if (!buf) | |
| 41 | return FALSE; | |
| 42 | if (screen->fb.shadow) | |
| 43 | free(screen->fb.frameBuffer); | |
| 44 | screen->fb.shadow = TRUE; | |
| 45 | screen->fb.frameBuffer = buf; | |
| 46 | screen->fb.byteStride = paddedWidth; | |
| 47 | screen->fb.pixelStride = paddedWidth * 8 / bpp; | |
| 48 | return TRUE; | |
| 49 | } | |
| 50 | ||
| 51 | void | |
| 52 | KdShadowFbFree(KdScreenInfo * screen) | |
| 53 | { | |
| 54 | if (screen->fb.shadow) { | |
| 55 | free(screen->fb.frameBuffer); | |
| 56 | screen->fb.frameBuffer = 0; | |
| 57 | screen->fb.shadow = FALSE; | |
| 58 | } | |
| 59 | } | |
| 60 | ||
| 61 | Bool | |
| 62 | KdShadowSet(ScreenPtr pScreen, int randr, ShadowUpdateProc update, | |
| 63 | ShadowWindowProc window) | |
| 64 | { | |
| 65 | KdScreenPriv(pScreen); | |
| 66 | KdScreenInfo *screen = pScreenPriv->screen; | |
| 67 | ||
| 68 | shadowRemove(pScreen, pScreen->GetScreenPixmap(pScreen)); | |
| 69 | if (screen->fb.shadow) { | |
| 70 | return shadowAdd(pScreen, pScreen->GetScreenPixmap(pScreen), | |
| 71 | update, window, randr, 0); | |
| 72 | } | |
| 73 | return TRUE; | |
| 74 | } | |
| 75 | ||
| 76 | void | |
| 77 | KdShadowUnset(ScreenPtr pScreen) | |
| 78 | { | |
| 79 | shadowRemove(pScreen, pScreen->GetScreenPixmap(pScreen)); | |
| 80 | } |