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cogl: Fix cogl_frame_info_get_frame_counter docs

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The docs previously suggested that `cogl_frame_info_get_frame_counter`
returned a timestamp of an unknown clock ID. That's not correct. The
cogl source code shows that it does and must use the same clock as
`cogl_get_clock_time`.

Related to https://gitlab.gnome.org/GNOME/mutter/issues/131
This commit is contained in:
Daniel van Vugt 2018-06-28 15:46:47 +08:00
parent ff5d561ca6
commit c6691afa38
1 changed files with 2 additions and 5 deletions
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7
cogl/cogl/cogl-frame-info.h
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@ -89,11 +89,8 @@ int64_t cogl_frame_info_get_frame_counter (CoglFrameInfo *info);
* Gets the presentation time for the frame. This is the time at which
* the frame became visible to the user.
*
* The presentation time measured in nanoseconds is based on a
* monotonic time source. The time source is not necessarily
* correlated with system/wall clock time and may represent the time
* elapsed since some undefined system event such as when the system
* last booted.
* The presentation time measured in nanoseconds, is based on
* cogl_get_clock_time().
*
* <note>Linux kernel version less that 3.8 can result in
* non-monotonic timestamps being reported when using a drm based