diff options
Diffstat (limited to 'src/sna/sna_dri.c')
| -rw-r--r-- | src/sna/sna_dri.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/sna/sna_dri.c b/src/sna/sna_dri.c index 0a01f8af..f4049f19 100644 --- a/src/sna/sna_dri.c +++ b/src/sna/sna_dri.c @@ -461,6 +461,22 @@ sna_dri_copy(struct sna *sna, DrawablePtr draw, RegionPtr region, get_drawable_deltas(draw, dst, &dx, &dy); } + if (sna->kgem.gen >= 60) { + /* Sandybridge introduced a separate ring which it uses to + * perform blits. Switching rendering between rings incurs + * a stall as we wait upon the old ring to finish and + * flush its render cache before we can proceed on with + * the operation on the new ring. + * + * As this buffer, we presume, has just been written to by + * the DRI client using the RENDER ring, we want to perform + * 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). + */ + kgem_set_mode(&sna->kgem, KGEM_RENDER); + } + if (region) { boxes = REGION_RECTS(region); n = REGION_NUM_RECTS(region); |