| commit | bf711ebeb6931f5b2094ac4ab4fe710b9dbebbe3 | [log] [tgz] |
|---|---|---|
| author | Drew Davenport <ddavenport@google.com> | Wed Feb 19 09:41:20 2025 -0700 |
| committer | Drew Davenport <ddavenport@google.com> | Fri Feb 21 10:51:42 2025 -0700 |
| tree | 1ac7ca1ca7d552ac19b39aa926b35291bd5234e7 | |
| parent | 35a395720a4d567e1aaf1749963088d9829ef8b8 [diff] |
drm_hwcomposer: Avoid resetting vsync timestamp last_timestamp_ tracks the most recent timestamp from a vblank event. Do not reset it when toggling vsync tracking on/off. This allows for GetPhasedVSync to calculate a more precise approximation of the next vsync relative to the current time, even if a vsync hasn't happened for a while. Reset last_timestamp_ when the vsync period changes, since the phased vsync calculation is based on the current vsync. Also change last_timestamp_ to std::optional type. Change-Id: I101b36f87d6ba8197c321c83ac0bc230fba9cf7e Signed-off-by: Drew Davenport <ddavenport@google.com>
Patches to drm_hwcomposer are very much welcome, we really want this to be the universal HW composer implementation for Android and similar platforms. So please bring on porting patches, bugfixes, improvements for documentation and new features.
A short list of contribution guidelines:
Submit changes via gitlab merge requests on gitlab.freedesktop.org.
drm_hwcomposer is Apache 2.0 Licensed and we require contributions to follow the developer's certificate of origin: http://developercertificate.org/.
When submitting new code please follow the naming conventions documented in the generated documentation. Also please make full use of all the helpers and convenience macros provided by drm_hwcomposer. The below command can help you with formatting of your patches:
git diff | clang-format-diff-19 -p 1 -style=file
Hardware specific changes should be tested on relevant platforms before committing.
If you need inspiration, please checkout our TODO issues.
Happy hacking!