cf4793d99e
Here's a trip down memory lane. Back when we merged kdrive we adopted
kdrive's version of shadow, which used damage directly instead of
hand-rolling it. However a couple of Xorg drivers referred to the
accumulated damage region in the shadow private directly, so I added a
hack to copy the damage region around.
That was 9148d8700b
, back in early 2006.
Eight years is unusually patient for me. The neomagic and trident drivers
were still relying on this, but they've been modified to ask the damage
code for the region instead.
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
219 lines
5.7 KiB
C
219 lines
5.7 KiB
C
/*
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* Copyright © 2000 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <stdlib.h>
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#include <X11/X.h>
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#include "scrnintstr.h"
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#include "windowstr.h"
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#include "dixfontstr.h"
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#include "mi.h"
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#include "regionstr.h"
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#include "globals.h"
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#include "gcstruct.h"
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#include "shadow.h"
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static DevPrivateKeyRec shadowScrPrivateKeyRec;
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#define shadowScrPrivateKey (&shadowScrPrivateKeyRec)
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#define wrap(priv, real, mem) {\
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priv->mem = real->mem; \
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real->mem = shadow##mem; \
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}
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#define unwrap(priv, real, mem) {\
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real->mem = priv->mem; \
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}
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static void
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shadowRedisplay(ScreenPtr pScreen)
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{
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shadowBuf(pScreen);
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RegionPtr pRegion;
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if (!pBuf || !pBuf->pDamage || !pBuf->update)
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return;
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pRegion = DamageRegion(pBuf->pDamage);
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if (RegionNotEmpty(pRegion)) {
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(*pBuf->update) (pScreen, pBuf);
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DamageEmpty(pBuf->pDamage);
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}
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}
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static void
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shadowBlockHandler(void *data, OSTimePtr pTimeout, void *pRead)
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{
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ScreenPtr pScreen = (ScreenPtr) data;
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shadowRedisplay(pScreen);
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}
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static void
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shadowWakeupHandler(void *data, int i, void *LastSelectMask)
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{
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}
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static void
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shadowGetImage(DrawablePtr pDrawable, int sx, int sy, int w, int h,
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unsigned int format, unsigned long planeMask, char *pdstLine)
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{
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ScreenPtr pScreen = pDrawable->pScreen;
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shadowBuf(pScreen);
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/* Many apps use GetImage to sync with the visable frame buffer */
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if (pDrawable->type == DRAWABLE_WINDOW)
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shadowRedisplay(pScreen);
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unwrap(pBuf, pScreen, GetImage);
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pScreen->GetImage(pDrawable, sx, sy, w, h, format, planeMask, pdstLine);
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wrap(pBuf, pScreen, GetImage);
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}
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static Bool
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shadowCloseScreen(ScreenPtr pScreen)
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{
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shadowBuf(pScreen);
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unwrap(pBuf, pScreen, GetImage);
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unwrap(pBuf, pScreen, CloseScreen);
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shadowRemove(pScreen, pBuf->pPixmap);
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DamageDestroy(pBuf->pDamage);
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if (pBuf->pPixmap)
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pScreen->DestroyPixmap(pBuf->pPixmap);
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free(pBuf);
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return pScreen->CloseScreen(pScreen);
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}
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Bool
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shadowSetup(ScreenPtr pScreen)
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{
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shadowBufPtr pBuf;
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if (!dixRegisterPrivateKey(&shadowScrPrivateKeyRec, PRIVATE_SCREEN, 0))
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return FALSE;
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if (!DamageSetup(pScreen))
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return FALSE;
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pBuf = malloc(sizeof(shadowBufRec));
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if (!pBuf)
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return FALSE;
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pBuf->pDamage = DamageCreate((DamageReportFunc) NULL,
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(DamageDestroyFunc) NULL,
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DamageReportNone, TRUE, pScreen, pScreen);
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if (!pBuf->pDamage) {
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free(pBuf);
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return FALSE;
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}
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wrap(pBuf, pScreen, CloseScreen);
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wrap(pBuf, pScreen, GetImage);
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pBuf->update = 0;
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pBuf->window = 0;
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pBuf->pPixmap = 0;
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pBuf->closure = 0;
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pBuf->randr = 0;
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dixSetPrivate(&pScreen->devPrivates, shadowScrPrivateKey, pBuf);
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return TRUE;
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}
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Bool
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shadowAdd(ScreenPtr pScreen, PixmapPtr pPixmap, ShadowUpdateProc update,
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ShadowWindowProc window, int randr, void *closure)
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{
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shadowBuf(pScreen);
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if (!RegisterBlockAndWakeupHandlers(shadowBlockHandler, shadowWakeupHandler,
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(void *) pScreen))
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return FALSE;
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/*
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* Map simple rotation values to bitmasks; fortunately,
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* these are all unique
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*/
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switch (randr) {
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case 0:
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randr = SHADOW_ROTATE_0;
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break;
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case 90:
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randr = SHADOW_ROTATE_90;
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break;
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case 180:
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randr = SHADOW_ROTATE_180;
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break;
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case 270:
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randr = SHADOW_ROTATE_270;
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break;
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}
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pBuf->update = update;
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pBuf->window = window;
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pBuf->randr = randr;
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pBuf->closure = closure;
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pBuf->pPixmap = pPixmap;
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DamageRegister(&pPixmap->drawable, pBuf->pDamage);
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return TRUE;
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}
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void
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shadowRemove(ScreenPtr pScreen, PixmapPtr pPixmap)
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{
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shadowBuf(pScreen);
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if (pBuf->pPixmap) {
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DamageUnregister(pBuf->pDamage);
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pBuf->update = 0;
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pBuf->window = 0;
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pBuf->randr = 0;
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pBuf->closure = 0;
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pBuf->pPixmap = 0;
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}
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RemoveBlockAndWakeupHandlers(shadowBlockHandler, shadowWakeupHandler,
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(void *) pScreen);
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}
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Bool
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shadowInit(ScreenPtr pScreen, ShadowUpdateProc update, ShadowWindowProc window)
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{
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PixmapPtr pPixmap;
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pPixmap = pScreen->CreatePixmap(pScreen, pScreen->width, pScreen->height,
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pScreen->rootDepth, 0);
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if (!pPixmap)
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return FALSE;
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if (!shadowSetup(pScreen)) {
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pScreen->DestroyPixmap(pPixmap);
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return FALSE;
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}
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shadowAdd(pScreen, pPixmap, update, window, SHADOW_ROTATE_0, 0);
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return TRUE;
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}
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