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uxa: Try using put_image when copying from a memory buffer. 

Often, for example in the fallback for ShmPutImage, we will attempt to
use uxa_copy_area() copying to a normal pixmap from a memory buffer.
This triggers a fallback, and maps the destination pixmap back into the
GTT. The accelerated put_image path will attempt to stream a blit to the
destination pixmap if it is currently active, avoiding the stall.
This commit is contained in:
Chris Wilson 2010-03-31 20:30:27 +01:00
parent 385563417d
commit 27195d7dba
1 changed files with 43 additions and 8 deletions
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51
uxa/uxa-accel.c
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@ -470,18 +470,19 @@ uxa_copy_n_to_n(DrawablePtr pSrcDrawable,
goto fallback;
}
if (!uxa_pixmap_is_offscreen(pSrcPixmap) ||
!uxa_pixmap_is_offscreen(pDstPixmap) ||
!(*uxa_screen->info->prepare_copy) (pSrcPixmap, pDstPixmap,
if (!uxa_pixmap_is_offscreen(pDstPixmap))
goto fallback;
if (uxa_pixmap_is_offscreen(pSrcPixmap)) {
if (!(*uxa_screen->info->prepare_copy) (pSrcPixmap, pDstPixmap,
reverse ? -1 : 1,
upsidedown ? -1 : 1,
pGC ? pGC->alu : GXcopy,
pGC ? pGC->
planemask : FB_ALLONES)) {
planemask : FB_ALLONES))
goto fallback;
}
while (nbox--) {
while (nbox--) {
(*uxa_screen->info->copy) (pDstPixmap,
pbox->x1 + dx + src_off_x,
pbox->y1 + dy + src_off_y,
@ -490,9 +491,43 @@ uxa_copy_n_to_n(DrawablePtr pSrcDrawable,
pbox->x2 - pbox->x1,
pbox->y2 - pbox->y1);
pbox++;
}
}
(*uxa_screen->info->done_copy) (pDstPixmap);
(*uxa_screen->info->done_copy) (pDstPixmap);
} else {
int stride, bpp;
char *src;
if (!uxa_screen->info->put_image)
goto fallback;
/* Don't bother with under 8bpp, XYPixmaps. */
bpp = pSrcPixmap->drawable.bitsPerPixel;
if (bpp != pDstDrawable->bitsPerPixel || bpp < 8)
goto fallback;
/* Only accelerate copies: no rop or planemask. */
if (pGC && (!UXA_PM_IS_SOLID(pSrcDrawable, pGC->planemask) || pGC->alu != GXcopy))
goto fallback;
src = pSrcPixmap->devPrivate.ptr;
stride = pSrcPixmap->devKind;
bpp /= 8;
while (nbox--) {
if (!uxa_screen->info->put_image(pDstPixmap,
pbox->x1 + dst_off_x,
pbox->y1 + dst_off_y,
pbox->x2 - pbox->x1,
pbox->y2 - pbox->y1,
(char *) src +
(pbox->y1 + dy + src_off_y) * stride +
(pbox->x1 + dx + src_off_x) * bpp,
stride))
goto fallback;
pbox++;
}
}
return;