| commit | 16933c3dcfae12b773c91cc793d1f47ff88533b7 | [log] [tgz] |
|---|---|---|
| author | Tim Van Patten <timvp@google.com> | Fri Nov 08 16:41:39 2024 -0700 |
| committer | Tim Van Patten <timvp@google.com> | Mon Nov 18 11:00:09 2024 -0700 |
| tree | a022e125b57fe2bd4e47f5becf252c86ee9b13cf | |
| parent | 97b5abc501dca66848fd5eb47d7be47c194d62dc [diff] |
drm_hwcomposer: Check "Present Not Reliable" property
Check the "Present Not Reliable" property to determine if the capability
PRESENT_FENCE_IS_NOT_RELIABLE should be enabled or not.
The virtio gpu module sends frames to the host as fast as possible and
does not emulate "real display timing". Devices using the virtio gpu
module (for example, the virtual Android device Cuttlefish) should set
the following property to "true" to enable the capability:
ro.vendor.hwc.drm.present_not_reliable.enabled
For example, in an Android BoardConfig.mk:
PRODUCT_VENDOR_PROPERTIES += \
vendor.hwc.drm.present_not_reliable.enabled=true
Signed-off-by: Tim Van Patten <timvp@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!