diff options
Diffstat (limited to 'present/present.c')
| -rw-r--r-- | present/present.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/present/present.c b/present/present.c index 3aea0d7c6..f624e5b7b 100644 --- a/present/present.c +++ b/present/present.c @@ -291,14 +291,18 @@ present_window_to_crtc_msc(WindowPtr window, RRCrtcPtr crtc, uint64_t window_msc if (crtc != window_priv->crtc) { uint64_t old_ust, old_msc; - /* The old CRTC may have been turned off, in which case - * we'll just use whatever previous MSC we'd seen from this CRTC - */ + if (window_priv->crtc == PresentCrtcNeverSet) { + window_priv->msc_offset = 0; + } else { + /* The old CRTC may have been turned off, in which case + * we'll just use whatever previous MSC we'd seen from this CRTC + */ - if (present_get_ust_msc(window->drawable.pScreen, window_priv->crtc, &old_ust, &old_msc) != Success) - old_msc = window_priv->msc; + if (present_get_ust_msc(window->drawable.pScreen, window_priv->crtc, &old_ust, &old_msc) != Success) + old_msc = window_priv->msc; - window_priv->msc_offset += new_msc - old_msc; + window_priv->msc_offset += new_msc - old_msc; + } window_priv->crtc = crtc; } @@ -725,7 +729,7 @@ present_pixmap(WindowPtr window, if (!pixmap) target_crtc = window_priv->crtc; - if (!target_crtc) + if (!target_crtc || target_crtc == PresentCrtcNeverSet) target_crtc = present_get_crtc(window); } |