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sna/dri: Cleanup ring selection for SNB+ CopyRegion 

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2012-07-20 13:12:27 +01:00
parent 3b56588fba
commit fb7987fc0b
1 changed files with 8 additions and 4 deletions
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12
src/sna/sna_dri.c
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@ -426,6 +426,7 @@ static void set_bo(PixmapPtr pixmap, struct kgem_bo *bo)
static void sna_dri_select_mode(struct sna *sna, struct kgem_bo *src, bool sync)
{
struct drm_i915_gem_busy busy;
int mode;
if (sna->kgem.gen < 60)
return;
@ -463,11 +464,14 @@ static void sna_dri_select_mode(struct sna *sna, struct kgem_bo *src, bool sync)
* our operation on the same ring, and ideally on the same
* ring as we will flip from (which should be the RENDER ring
* as well).
*
* The ultimate question is whether preserving the ring outweighs
* the cost of the query.
*/
if ((busy.busy & 0xffff0000) == 0 || busy.busy & (1 << 16))
kgem_set_mode(&sna->kgem, KGEM_RENDER);
else
kgem_set_mode(&sna->kgem, KGEM_BLT);
mode = KGEM_RENDER;
if (busy.busy & (1 << 16))
mode = KGEM_BLT;
_kgem_set_mode(&sna->kgem, mode);
}
static struct kgem_bo *