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sna/dri2: Keep the async swap event alive until the copy is complete 

Although we are ordered wrt to the client, there is no point allowing
the client to continue submitting rendering and eventually blocking
whilst we are still waiting for the previous frame to be shown.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2015-06-12 13:44:41 +01:00
parent fc137ae504
commit 4c17a20a71
1 changed files with 4 additions and 3 deletions
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7
src/sna/sna_dri2.c
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@ -1004,6 +1004,7 @@ static bool is_front(int attachment)
#define DRI2_SYNC 0x1
#define DRI2_DAMAGE 0x2
#define DRI2_BO 0x4
static struct kgem_bo *
__sna_dri2_copy_region(struct sna *sna, DrawablePtr draw, RegionPtr region,
DRI2BufferPtr src, DRI2BufferPtr dst,
@ -1233,7 +1234,7 @@ __sna_dri2_copy_region(struct sna *sna, DrawablePtr draw, RegionPtr region,
boxes, n, hint);
DBG(("%s: flushing? %d\n", __FUNCTION__, sync));
if (flags & DRI2_SYNC) { /* STAT! */
if (flags & (DRI2_SYNC | DRI2_BO)) { /* STAT! */
struct kgem_request *rq = sna->kgem.next_request;
kgem_submit(&sna->kgem);
if (rq->bo) {
@ -2267,7 +2268,7 @@ static void chain_swap(struct sna_dri2_event *chain)
sna_dri2_xchg_crtc(chain->sna, chain->draw, chain->crtc, chain->front, chain->back);
} else {
assert(chain->queued);
__sna_dri2_copy_event(chain, 0);
__sna_dri2_copy_event(chain, DRI2_BO);
}
get_private(chain->back)->bo = tmp;
get_private(chain->back)->copy = NULL;
@ -2463,7 +2464,7 @@ sna_dri2_immediate_blit(struct sna *sna,
DBG(("%s: no pending blit, starting chain\n", __FUNCTION__));
info->queued = true;
__sna_dri2_copy_event(info, sync);
__sna_dri2_copy_event(info, sync | DRI2_BO);
VG_CLEAR(vbl);
vbl.request.type =