Accumulate graphics exposures incrementally in PanoramiXCopyArea/Plane.
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)
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@ -1084,10 +1084,12 @@ int PanoramiXCopyArea(ClientPtr client)
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} else {
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DrawablePtr pDst = NULL, pSrc = NULL;
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GCPtr pGC = NULL;
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RegionPtr pRgn[MAXSCREENS];
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RegionRec totalReg;
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int rc;
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REGION_NULL(unusedScreen, &totalReg);
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FOR_NSCREENS_BACKWARD(j) {
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RegionPtr pRgn;
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stuff->dstDrawable = dst->info[j].id;
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stuff->srcDrawable = src->info[j].id;
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stuff->gc = gc->info[j].id;
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@ -1116,37 +1118,30 @@ int PanoramiXCopyArea(ClientPtr client)
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} else
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pSrc = pDst;
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pRgn[j] = (*pGC->ops->CopyArea)(pSrc, pDst, pGC,
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pRgn = (*pGC->ops->CopyArea)(pSrc, pDst, pGC,
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stuff->srcX, stuff->srcY,
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stuff->width, stuff->height,
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stuff->dstX, stuff->dstY);
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if(dstShared) {
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while(j--) pRgn[j] = NULL;
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break;
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if(pGC->graphicsExposures && pRgn) {
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if(srcIsRoot) {
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REGION_TRANSLATE(unusedScreen, pRgn,
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screenInfo.screens[j]->x, screenInfo.screens[j]->y);
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}
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REGION_APPEND(unusedScreen, &totalReg, pRgn);
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REGION_DESTROY(unusedScreen, pRgn);
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}
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if(dstShared)
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break;
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}
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if(pGC->graphicsExposures) {
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ScreenPtr pScreen = pDst->pScreen;
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RegionRec totalReg;
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Bool overlap;
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REGION_NULL(pScreen, &totalReg);
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FOR_NSCREENS_BACKWARD(j) {
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if(pRgn[j]) {
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if(srcIsRoot) {
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REGION_TRANSLATE(pScreen, pRgn[j],
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screenInfo.screens[j]->x, screenInfo.screens[j]->y);
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}
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REGION_APPEND(pScreen, &totalReg, pRgn[j]);
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REGION_DESTROY(pScreen, pRgn[j]);
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}
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}
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REGION_VALIDATE(pScreen, &totalReg, &overlap);
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REGION_VALIDATE(unusedScreen, &totalReg, &overlap);
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(*pScreen->SendGraphicsExpose)(
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client, &totalReg, stuff->dstDrawable, X_CopyArea, 0);
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REGION_UNINIT(pScreen, &totalReg);
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REGION_UNINIT(unusedScreen, &totalReg);
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}
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}
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@ -1163,7 +1158,7 @@ int PanoramiXCopyPlane(ClientPtr client)
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Bool srcShared, dstShared;
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DrawablePtr psrcDraw, pdstDraw = NULL;
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GCPtr pGC = NULL;
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RegionPtr pRgn[MAXSCREENS];
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RegionRec totalReg;
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REQUEST(xCopyPlaneReq);
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REQUEST_SIZE_MATCH(xCopyPlaneReq);
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@ -1198,7 +1193,9 @@ int PanoramiXCopyPlane(ClientPtr client)
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srcx = stuff->srcX; srcy = stuff->srcY;
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dstx = stuff->dstX; dsty = stuff->dstY;
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REGION_NULL(unusedScreen, &totalReg);
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FOR_NSCREENS_BACKWARD(j) {
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RegionPtr pRgn;
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stuff->dstDrawable = dst->info[j].id;
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stuff->srcDrawable = src->info[j].id;
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stuff->gc = gc->info[j].id;
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@ -1231,33 +1228,26 @@ int PanoramiXCopyPlane(ClientPtr client)
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return(BadValue);
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}
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pRgn[j] = (*pGC->ops->CopyPlane)(psrcDraw, pdstDraw, pGC,
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pRgn = (*pGC->ops->CopyPlane)(psrcDraw, pdstDraw, pGC,
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stuff->srcX, stuff->srcY,
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stuff->width, stuff->height,
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stuff->dstX, stuff->dstY, stuff->bitPlane);
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if(dstShared) {
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while(j--) pRgn[j] = NULL;
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break;
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if(pGC->graphicsExposures && pRgn) {
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REGION_APPEND(unusedScreen, &totalReg, pRgn);
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REGION_DESTROY(unusedScreen, pRgn);
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}
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if(dstShared)
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break;
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}
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if(pGC->graphicsExposures) {
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ScreenPtr pScreen = pdstDraw->pScreen;
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RegionRec totalReg;
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Bool overlap;
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REGION_NULL(pScreen, &totalReg);
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FOR_NSCREENS_BACKWARD(j) {
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if(pRgn[j]) {
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REGION_APPEND(pScreen, &totalReg, pRgn[j]);
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REGION_DESTROY(pScreen, pRgn[j]);
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}
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}
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REGION_VALIDATE(pScreen, &totalReg, &overlap);
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REGION_VALIDATE(unusedScreen, &totalReg, &overlap);
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(*pScreen->SendGraphicsExpose)(
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client, &totalReg, stuff->dstDrawable, X_CopyPlane, 0);
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REGION_UNINIT(pScreen, &totalReg);
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REGION_UNINIT(unusedScreen, &totalReg);
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}
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return Success;
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