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Track per-drawable damage to minimize UTS and DFS transfers.

Browse source 
Based on work by Eric Anholt.
This commit is contained in:
Michel Dänzer 2006-06-12 20:19:11 +02:00 • committed by Michel Dänzer
commit f9f33b72e3
7 changed files with 341 additions and 133 deletions
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54
exa/exa_unaccel.c
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@ -23,6 +23,26 @@
#include "exa_priv.h"
#define TRIM_BOX(box, pGC) if (pGC->pCompositeClip) { \
BoxPtr extents = &pGC->pCompositeClip->extents;\
if(box.x1 < extents->x1) box.x1 = extents->x1; \
if(box.x2 > extents->x2) box.x2 = extents->x2; \
if(box.y1 < extents->y1) box.y1 = extents->y1; \
if(box.y2 > extents->y2) box.y2 = extents->y2; \
}
#define TRANSLATE_BOX(box, pDrawable) { \
box.x1 += pDrawable->x; \
box.x2 += pDrawable->x; \
box.y1 += pDrawable->y; \
box.y2 += pDrawable->y; \
}
#define TRIM_AND_TRANSLATE_BOX(box, pDrawable, pGC) { \
TRANSLATE_BOX(box, pDrawable); \
TRIM_BOX(box, pGC); \
}
/*
* These functions wrap the low-level fb rendering functions and
* synchronize framebuffer/accelerated drawing by stalling until
@ -200,11 +220,35 @@ ExaCheckPolyFillRect (DrawablePtr pDrawable, GCPtr pGC,
int nrect, xRectangle *prect)
{
EXA_FALLBACK(("to %p (%c)\n", pDrawable, exaDrawableLocation(pDrawable)));
exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
exaPrepareAccessGC (pGC);
fbPolyFillRect (pDrawable, pGC, nrect, prect);
exaFinishAccessGC (pGC);
exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
if (nrect) {
BoxRec box = { .x1 = max(prect->x,0),
.x2 = min(prect->x + prect->width,pDrawable->width),
.y1 = max(prect->y,0),
.y2 = min(prect->y + prect->height,pDrawable->height) };
exaPrepareAccess (pDrawable, EXA_PREPARE_DEST);
exaPrepareAccessGC (pGC);
fbPolyFillRect (pDrawable, pGC, nrect, prect);
exaFinishAccessGC (pGC);
exaFinishAccess (pDrawable, EXA_PREPARE_DEST);
/* Only track bounding box of damage, as this path can degenerate to
* zillions of damage boxes
*/
while (--nrect)
{
prect++;
box.x1 = min(box.x1, prect->x);
box.x2 = max(box.x2, prect->x + prect->width);
box.y1 = min(box.y1, prect->y);
box.y2 = max(box.y2, prect->y + prect->height);
}
TRIM_AND_TRANSLATE_BOX(box, pDrawable, pGC);
exaDrawableDirty (pDrawable, box.x1, box.x2, box.y1, box.y2);
}
}
void