diff options
| -rw-r--r-- | src/glx/dri3_glx.c | 34 | ||||
| -rw-r--r-- | src/glx/dri3_priv.h | 16 |
2 files changed, 30 insertions, 20 deletions
diff --git a/src/glx/dri3_glx.c b/src/glx/dri3_glx.c index 2a9f0b7353c..7b78cd13ae2 100644 --- a/src/glx/dri3_glx.c +++ b/src/glx/dri3_glx.c @@ -365,10 +365,17 @@ dri3_handle_present_event(struct dri3_drawable *priv, xcb_present_generic_event_ case XCB_PRESENT_COMPLETE_NOTIFY: { xcb_present_complete_notify_event_t *ce = (void *) ge; - if (ce->kind == XCB_PRESENT_COMPLETE_KIND_PIXMAP) - priv->present_event_serial = ce->serial; - else - priv->present_msc_event_serial = ce->serial; + /* Compute the processed SBC number from the received 32-bit serial number merged + * with the upper 32-bits of the sent 64-bit serial number while checking for + * wrap + */ + if (ce->kind == XCB_PRESENT_COMPLETE_KIND_PIXMAP) { + priv->recv_sbc = (priv->send_sbc & 0xffffffff00000000LL) | ce->serial; + if (priv->recv_sbc > priv->send_sbc) + priv->recv_sbc -= 0x100000000; + } else { + priv->recv_msc_serial = ce->serial; + } priv->ust = ce->ust; priv->msc = ce->msc; break; @@ -399,12 +406,13 @@ dri3_wait_for_msc(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor, struct dri3_drawable *priv = (struct dri3_drawable *) pdraw; xcb_generic_event_t *ev; xcb_present_generic_event_t *ge; + uint32_t msc_serial; /* Ask for the an event for the target MSC */ - ++priv->present_msc_request_serial; + msc_serial = ++priv->send_msc_serial; xcb_present_notify_msc(c, priv->base.xDrawable, - priv->present_msc_request_serial, + msc_serial, target_msc, divisor, remainder); @@ -413,7 +421,7 @@ dri3_wait_for_msc(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor, /* Wait for the event */ if (priv->special_event) { - while (priv->present_msc_request_serial != priv->present_msc_event_serial) { + while ((int32_t) (msc_serial - priv->recv_msc_serial) > 0) { ev = xcb_wait_for_special_event(c, priv->special_event); if (!ev) break; @@ -424,7 +432,7 @@ dri3_wait_for_msc(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor, *ust = priv->ust; *msc = priv->msc; - *sbc = priv->sbc; + *sbc = priv->recv_sbc; return 1; } @@ -451,7 +459,7 @@ dri3_wait_for_sbc(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust, { struct dri3_drawable *priv = (struct dri3_drawable *) pdraw; - while (priv->sbc < target_sbc) { + while (priv->send_sbc < target_sbc) { sleep(1); } return dri3_wait_for_msc(pdraw, 0, 0, 0, ust, msc, sbc); @@ -1282,15 +1290,15 @@ dri3_swap_buffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor, /* Compute when we want the frame shown by taking the last known successful * MSC and adding in a swap interval for each outstanding swap request */ - ++priv->present_request_serial; + ++priv->send_sbc; if (target_msc == 0) - target_msc = priv->msc + priv->swap_interval * (priv->present_request_serial - priv->present_event_serial); + target_msc = priv->msc + priv->swap_interval * (priv->send_sbc - priv->recv_sbc); priv->buffers[buf_id]->busy = 1; xcb_present_pixmap(c, priv->base.xDrawable, priv->buffers[buf_id]->pixmap, - priv->present_request_serial, + (uint32_t) priv->send_sbc, 0, /* valid */ 0, /* update */ 0, /* x_off */ @@ -1302,7 +1310,7 @@ dri3_swap_buffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor, target_msc, divisor, remainder, 0, NULL); - ret = ++priv->sbc; + ret = (int64_t) priv->send_sbc; /* If there's a fake front, then copy the source back buffer * to the fake front to keep it up to date. This needs diff --git a/src/glx/dri3_priv.h b/src/glx/dri3_priv.h index 682849386ab..9d142cf5137 100644 --- a/src/glx/dri3_priv.h +++ b/src/glx/dri3_priv.h @@ -183,16 +183,18 @@ struct dri3_drawable { uint8_t have_fake_front; uint8_t is_pixmap; - uint32_t present_request_serial; - uint32_t present_event_serial; - - uint64_t sbc; + /* SBC numbers are tracked by using the serial numbers + * in the present request and complete events + */ + uint64_t send_sbc; + uint64_t recv_sbc; + /* Last received UST/MSC values */ uint64_t ust, msc; - /* For WaitMSC */ - uint32_t present_msc_request_serial; - uint32_t present_msc_event_serial; + /* Serial numbers for tracking wait_for_msc events */ + uint32_t send_msc_serial; + uint32_t recv_msc_serial; struct dri3_buffer *buffers[DRI3_NUM_BUFFERS]; int cur_back; |