diff options
Diffstat (limited to 'src/common_drm.c')
| -rw-r--r-- | src/common_drm.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/common_drm.c b/src/common_drm.c index b641a14..1523694 100644 --- a/src/common_drm.c +++ b/src/common_drm.c @@ -114,12 +114,23 @@ static void drmmode_ConvertFromKMode(ScrnInfoPtr pScrn, static uint64_t common_drm_frame_to_msc(xf86CrtcPtr crtc, uint32_t seq) { - return seq; + struct common_crtc_info *drmc = common_crtc(crtc); + + if (seq < drmc->last_seq) { + if ((int32_t)(drmc->last_seq - seq) > 0x40000000) + drmc->last_msc += 0x100000000ULL; + else + seq = drmc->last_seq; + } + drmc->last_seq = seq; + return drmc->last_msc + seq; } static uint32_t common_drm_msc_to_frame(xf86CrtcPtr crtc, uint64_t msc) { - return msc; + struct common_crtc_info *drmc = common_crtc(crtc); + + return msc - drmc->last_msc; } static drmModePropertyPtr common_drm_conn_find_property( |