/**
* exaPrepareAccess() is EXA's wrapper for the driver's PrepareAccess() handler.
*
* It deals with waiting for synchronization with the card, determining if
* PrepareAccess() is necessary, and working around PrepareAccess() failure.
*/
void
exaPrepareAccess(DrawablePtr pDrawable, int index)
{
ScreenPtr pScreen = pDrawable->pScreen;
ExaScreenPriv (pScreen);
PixmapPtr pPixmap;
pPixmap = exaGetDrawablePixmap (pDrawable);
if (exaPixmapIsOffscreen (pPixmap))
exaWaitSync (pDrawable->pScreen);
else
return;
/* Unhide pixmap pointer */
if (pPixmap->devPrivate.ptr == NULL) {
ExaPixmapPriv (pPixmap);
pPixmap->devPrivate.ptr = pExaPixmap->fb_ptr;
}
if (pExaScr->info->PrepareAccess == NULL)
return;
if (!(*pExaScr->info->PrepareAccess) (pPixmap, index)) {
ExaPixmapPriv (pPixmap);
if (pExaPixmap->score != EXA_PIXMAP_SCORE_PINNED)
FatalError("Driver failed PrepareAccess on a pinned pixmap\n");
exaMoveOutPixmap (pPixmap);
}
}
static void
GLAMOBlockHandler(pointer blockData, OSTimePtr timeout, pointer readmask)
{
ScreenPtr pScreen = (ScreenPtr) blockData;
exaWaitSync(pScreen);
}
/**
* Accelerates GetImage for solid ZPixmap downloads from framebuffer memory.
*
* This is probably the only case we actually care about. The rest fall through
* to migration and fbGetImage, which hopefully will result in migration pushing
* the pixmap out of framebuffer.
*/
void
exaGetImage(DrawablePtr pDrawable, int x, int y, int w, int h,
unsigned int format, unsigned long planeMask, char *d)
{
ExaScreenPriv(pDrawable->pScreen);
PixmapPtr pPix = exaGetDrawablePixmap(pDrawable);
ExaPixmapPriv(pPix);
int xoff, yoff;
Bool ok;
if (pExaScr->fallback_counter || pExaScr->swappedOut)
goto fallback;
/* If there's a system copy, we want to save the result there */
if (pExaPixmap->pDamage)
goto fallback;
pPix = exaGetOffscreenPixmap(pDrawable, &xoff, &yoff);
if (pPix == NULL || pExaScr->info->DownloadFromScreen == NULL)
goto fallback;
/* Only cover the ZPixmap, solid copy case. */
if (format != ZPixmap || !EXA_PM_IS_SOLID(pDrawable, planeMask))
goto fallback;
/* Only try to handle the 8bpp and up cases, since we don't want to think
* about <8bpp.
*/
if (pDrawable->bitsPerPixel < 8)
goto fallback;
ok = pExaScr->info->DownloadFromScreen(pPix, pDrawable->x + x + xoff,
pDrawable->y + y + yoff, w, h, d,
PixmapBytePad(w, pDrawable->depth));
if (ok) {
exaWaitSync(pDrawable->pScreen);
return;
}
fallback:
ExaCheckGetImage(pDrawable, x, y, w, h, format, planeMask, d);
}
/**
* If the pixmap is currently dirty, this copies at least the dirty area from
* the framebuffer memory copy to the system memory copy. Both areas must be
* allocated.
*/
static void
exaCopyDirtyToSys (PixmapPtr pPixmap)
{
ExaScreenPriv (pPixmap->drawable.pScreen);
ExaPixmapPriv (pPixmap);
RegionPtr pRegion = DamageRegion (pExaPixmap->pDamage);
CARD8 *save_ptr;
int save_pitch;
BoxPtr pBox = REGION_RECTS(pRegion);
int nbox = REGION_NUM_RECTS(pRegion);
Bool do_sync = FALSE;
save_ptr = pPixmap->devPrivate.ptr;
save_pitch = pPixmap->devKind;
pPixmap->devPrivate.ptr = pExaPixmap->fb_ptr;
pPixmap->devKind = pExaPixmap->fb_pitch;
while (nbox--) {
pBox->x1 = max(pBox->x1, 0);
pBox->y1 = max(pBox->y1, 0);
pBox->x2 = min(pBox->x2, pPixmap->drawable.width);
pBox->y2 = min(pBox->y2, pPixmap->drawable.height);
if (pBox->x1 >= pBox->x2 || pBox->y1 >= pBox->y2)
continue;
if (pExaScr->info->DownloadFromScreen == NULL ||
!pExaScr->info->DownloadFromScreen (pPixmap,
pBox->x1, pBox->y1,
pBox->x2 - pBox->x1,
pBox->y2 - pBox->y1,
pExaPixmap->sys_ptr
+ pBox->y1 * pExaPixmap->sys_pitch
+ pBox->x1 * pPixmap->drawable.bitsPerPixel / 8,
pExaPixmap->sys_pitch))
{
exaPrepareAccess(&pPixmap->drawable, EXA_PREPARE_SRC);
exaMemcpyBox (pPixmap, pBox,
pExaPixmap->fb_ptr, pExaPixmap->fb_pitch,
pExaPixmap->sys_ptr, pExaPixmap->sys_pitch);
exaFinishAccess(&pPixmap->drawable, EXA_PREPARE_SRC);
}
else
do_sync = TRUE;
pBox++;
}
/* Make sure the bits have actually landed, since we don't necessarily sync
* when accessing pixmaps in system memory.
*/
if (do_sync)
exaWaitSync (pPixmap->drawable.pScreen);
pPixmap->devPrivate.ptr = save_ptr;
pPixmap->devKind = save_pitch;
/* The previously damaged bits are now no longer damaged but valid */
REGION_UNION(pPixmap->drawable.pScreen,
&pExaPixmap->validReg, &pExaPixmap->validReg, pRegion);
DamageEmpty (pExaPixmap->pDamage);
}
/**
* Accelerates GetImage for solid ZPixmap downloads from framebuffer memory.
*
* This is probably the only case we actually care about. The rest fall through
* to migration and fbGetImage, which hopefully will result in migration pushing
* the pixmap out of framebuffer.
*/
void
exaGetImage (DrawablePtr pDrawable, int x, int y, int w, int h,
unsigned int format, unsigned long planeMask, char *d)
{
ExaScreenPriv (pDrawable->pScreen);
PixmapPtr pPix = exaGetDrawablePixmap (pDrawable);
int xoff, yoff;
Bool ok;
if (pExaScr->fallback_counter || pExaScr->swappedOut)
goto fallback;
exaGetDrawableDeltas (pDrawable, pPix, &xoff, &yoff);
if (pExaScr->do_migration) {
BoxRec Box;
RegionRec Reg;
ExaMigrationRec pixmaps[1];
Box.x1 = pDrawable->y + x + xoff;
Box.y1 = pDrawable->y + y + yoff;
Box.x2 = Box.x1 + w;
Box.y2 = Box.y1 + h;
REGION_INIT(pScreen, &Reg, &Box, 1);
pixmaps[0].as_dst = FALSE;
pixmaps[0].as_src = TRUE;
pixmaps[0].pPix = pPix;
pixmaps[0].pReg = &Reg;
exaDoMigration(pixmaps, 1, FALSE);
REGION_UNINIT(pScreen, &Reg);
}
pPix = exaGetOffscreenPixmap (pDrawable, &xoff, &yoff);
if (pPix == NULL || pExaScr->info->DownloadFromScreen == NULL)
goto fallback;
/* Only cover the ZPixmap, solid copy case. */
if (format != ZPixmap || !EXA_PM_IS_SOLID(pDrawable, planeMask))
goto fallback;
/* Only try to handle the 8bpp and up cases, since we don't want to think
* about <8bpp.
*/
if (pDrawable->bitsPerPixel < 8)
goto fallback;
ok = pExaScr->info->DownloadFromScreen(pPix, pDrawable->x + x + xoff,
pDrawable->y + y + yoff, w, h, d,
PixmapBytePad(w, pDrawable->depth));
if (ok) {
exaWaitSync(pDrawable->pScreen);
return;
}
fallback:
ExaCheckGetImage(pDrawable, x, y, w, h, format, planeMask, d);
}
