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mi: Register sprite damage handler only when required 

There is no need to have damage handler registered when there isn't any
pointer in the screen. This avoids some overhead from damage handling
which takes tens of microseconds on arm.

Signed-off-by: Pauli Nieminen <ext-pauli.nieminen@nokia.com>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
This commit is contained in:
Pauli Nieminen 2010-12-30 19:19:39 +02:00 committed by Daniel Stone
parent bf48082f30
commit 4f6e3b0f37
1 changed files with 11 additions and 1 deletions
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12
mi/misprite.c
View File

@ -96,6 +96,7 @@ typedef struct {
VisualPtr pVisual;
DamagePtr pDamage; /* damage tracking structure */
Bool damageRegistered;
int numberOfCursors;
} miSpriteScreenRec, *miSpriteScreenPtr;
#define SOURCE_COLOR 0
@ -345,6 +346,7 @@ miSpriteInitialize (ScreenPtr pScreen,
pScreenPriv->colors[MASK_COLOR].green = 0;
pScreenPriv->colors[MASK_COLOR].blue = 0;
pScreenPriv->damageRegistered = 0;
pScreenPriv->numberOfCursors = 0;
dixSetPrivate(&pScreen->devPrivates, miSpriteScreenKey, pScreenPriv);
@ -772,21 +774,29 @@ static void
miSpriteSetCursor (DeviceIntPtr pDev, ScreenPtr pScreen,
CursorPtr pCursor, int x, int y)
{
miCursorInfoPtr pPointer;
miCursorInfoPtr pPointer;
miSpriteScreenPtr pScreenPriv;
if (!IsMaster(pDev) && !pDev->u.master)
return;
pPointer = MISPRITE(pDev);
pScreenPriv = GetSpriteScreen(pScreen);
if (!pCursor)
{
if (pPointer->shouldBeUp)
--pScreenPriv->numberOfCursors;
pPointer->shouldBeUp = FALSE;
if (pPointer->isUp)
miSpriteRemoveCursor (pDev, pScreen);
if (pScreenPriv->numberOfCursors == 0)
miSpriteDisableDamage(pScreen, pScreenPriv);
pPointer->pCursor = 0;
return;
}
if (!pPointer->shouldBeUp)
pScreenPriv->numberOfCursors++;
pPointer->shouldBeUp = TRUE;
if (pPointer->x == x &&
pPointer->y == y &&