diff options
| -rw-r--r-- | present/present_scmd.c | 36 |
1 files changed, 19 insertions, 17 deletions
diff --git a/present/present_scmd.c b/present/present_scmd.c index 200ded348..59feb001b 100644 --- a/present/present_scmd.c +++ b/present/present_scmd.c @@ -554,7 +554,6 @@ present_execute(present_vblank_ptr vblank, uint64_t ust, uint64_t crtc_msc) WindowPtr window = vblank->window; ScreenPtr screen = window->drawable.pScreen; present_screen_priv_ptr screen_priv = present_screen_priv(screen); - uint64_t completion_msc; if (vblank && vblank->crtc) { screen_priv=present_screen_priv(vblank->crtc->pScreen); } @@ -652,23 +651,26 @@ present_execute(present_vblank_ptr vblank, uint64_t ust, uint64_t crtc_msc) * If TearFree is already flipping then the presentation will be visible * at the *next* next vblank. */ - completion_msc = crtc_msc + 1; - switch (vblank->reason) { - case PRESENT_FLIP_REASON_DRIVER_TEARFREE_FLIPPING: - if (vblank->exec_msc < crtc_msc) - completion_msc++; - case PRESENT_FLIP_REASON_DRIVER_TEARFREE: - if (Success == screen_priv->queue_vblank(screen, - window, - vblank->crtc, - vblank->event_id, - completion_msc)) { - /* Ensure present_execute_post() runs at the next MSC */ - vblank->exec_msc = vblank->target_msc; - vblank->queued = TRUE; + if (!vblank->queued) { + uint64_t completion_msc = crtc_msc + 1; + + switch (vblank->reason) { + case PRESENT_FLIP_REASON_DRIVER_TEARFREE_FLIPPING: + if (vblank->exec_msc < crtc_msc) + completion_msc++; + case PRESENT_FLIP_REASON_DRIVER_TEARFREE: + if (Success == screen_priv->queue_vblank(screen, + window, + vblank->crtc, + vblank->event_id, + completion_msc)) { + /* Ensure present_execute_post() runs at the next MSC */ + vblank->exec_msc = vblank->target_msc; + vblank->queued = TRUE; + } + default: + break; } - default: - break; } if (vblank->queued) { |