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Accumulate graphics exposures incrementally in PanoramiXCopyArea/Plane.

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This fuses two loops in each function, eliminating an intermediate
MAXSCREENS-sized array from each.

Aside from being more efficient, I believe this is equivalent to the
previous implementation, since
- each per-screen GC has the graphicsExposures flag set the same way,
  and
- the REGION_* macros ignore their screen argument.

Signed-off-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Tiago Vignatti <tiago.vignatti@nokia.com>
Tested-by: Tiago Vignatti <tiago.vignatti@nokia.com> (i686 GNU/Linux)
This commit is contained in:
Jamey Sharp 2010-04-23 19:33:49 -07:00
parent a7c7ebe4b3
commit f114f54986
1 changed files with 28 additions and 38 deletions
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66
Xext/panoramiXprocs.c
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@ -1084,10 +1084,12 @@ int PanoramiXCopyArea(ClientPtr client)
} else {
DrawablePtr pDst = NULL, pSrc = NULL;
GCPtr pGC = NULL;
RegionPtr pRgn[MAXSCREENS];
RegionRec totalReg;
int rc;
REGION_NULL(unusedScreen, &totalReg);
FOR_NSCREENS_BACKWARD(j) {
RegionPtr pRgn;
stuff->dstDrawable = dst->info[j].id;
stuff->srcDrawable = src->info[j].id;
stuff->gc = gc->info[j].id;
@ -1116,37 +1118,30 @@ int PanoramiXCopyArea(ClientPtr client)
} else
pSrc = pDst;
pRgn[j] = (*pGC->ops->CopyArea)(pSrc, pDst, pGC,
pRgn = (*pGC->ops->CopyArea)(pSrc, pDst, pGC,
stuff->srcX, stuff->srcY,
stuff->width, stuff->height,
stuff->dstX, stuff->dstY);
if(dstShared) {
while(j--) pRgn[j] = NULL;
break;
if(pGC->graphicsExposures && pRgn) {
if(srcIsRoot) {
REGION_TRANSLATE(unusedScreen, pRgn,
screenInfo.screens[j]->x, screenInfo.screens[j]->y);
}
REGION_APPEND(unusedScreen, &totalReg, pRgn);
REGION_DESTROY(unusedScreen, pRgn);
}
if(dstShared)
break;
}
if(pGC->graphicsExposures) {
ScreenPtr pScreen = pDst->pScreen;
RegionRec totalReg;
Bool overlap;
REGION_NULL(pScreen, &totalReg);
FOR_NSCREENS_BACKWARD(j) {
if(pRgn[j]) {
if(srcIsRoot) {
REGION_TRANSLATE(pScreen, pRgn[j],
screenInfo.screens[j]->x, screenInfo.screens[j]->y);
}
REGION_APPEND(pScreen, &totalReg, pRgn[j]);
REGION_DESTROY(pScreen, pRgn[j]);
}
}
REGION_VALIDATE(pScreen, &totalReg, &overlap);
REGION_VALIDATE(unusedScreen, &totalReg, &overlap);
(*pScreen->SendGraphicsExpose)(
client, &totalReg, stuff->dstDrawable, X_CopyArea, 0);
REGION_UNINIT(pScreen, &totalReg);
REGION_UNINIT(unusedScreen, &totalReg);
}
}
@ -1163,7 +1158,7 @@ int PanoramiXCopyPlane(ClientPtr client)
Bool srcShared, dstShared;
DrawablePtr psrcDraw, pdstDraw = NULL;
GCPtr pGC = NULL;
RegionPtr pRgn[MAXSCREENS];
RegionRec totalReg;
REQUEST(xCopyPlaneReq);
REQUEST_SIZE_MATCH(xCopyPlaneReq);
@ -1198,7 +1193,9 @@ int PanoramiXCopyPlane(ClientPtr client)
srcx = stuff->srcX; srcy = stuff->srcY;
dstx = stuff->dstX; dsty = stuff->dstY;
REGION_NULL(unusedScreen, &totalReg);
FOR_NSCREENS_BACKWARD(j) {
RegionPtr pRgn;
stuff->dstDrawable = dst->info[j].id;
stuff->srcDrawable = src->info[j].id;
stuff->gc = gc->info[j].id;
@ -1231,33 +1228,26 @@ int PanoramiXCopyPlane(ClientPtr client)
return(BadValue);
}
pRgn[j] = (*pGC->ops->CopyPlane)(psrcDraw, pdstDraw, pGC,
pRgn = (*pGC->ops->CopyPlane)(psrcDraw, pdstDraw, pGC,
stuff->srcX, stuff->srcY,
stuff->width, stuff->height,
stuff->dstX, stuff->dstY, stuff->bitPlane);
if(dstShared) {
while(j--) pRgn[j] = NULL;
break;
if(pGC->graphicsExposures && pRgn) {
REGION_APPEND(unusedScreen, &totalReg, pRgn);
REGION_DESTROY(unusedScreen, pRgn);
}
if(dstShared)
break;
}
if(pGC->graphicsExposures) {
ScreenPtr pScreen = pdstDraw->pScreen;
RegionRec totalReg;
Bool overlap;
REGION_NULL(pScreen, &totalReg);
FOR_NSCREENS_BACKWARD(j) {
if(pRgn[j]) {
REGION_APPEND(pScreen, &totalReg, pRgn[j]);
REGION_DESTROY(pScreen, pRgn[j]);
}
}
REGION_VALIDATE(pScreen, &totalReg, &overlap);
REGION_VALIDATE(unusedScreen, &totalReg, &overlap);
(*pScreen->SendGraphicsExpose)(
client, &totalReg, stuff->dstDrawable, X_CopyPlane, 0);
REGION_UNINIT(pScreen, &totalReg);
REGION_UNINIT(unusedScreen, &totalReg);
}
return Success;