drm_hwcomposer: Use DUMB buffer for modeset

Now, as the LayerProperties struct accepts BufferInfo and BufferInfo can
carry the RAII-wrapped dmabuf FD, it has become elementary to use dumb
buffer for a modeset.

There are two benefits compared to using the gralloc:

1. We aim to make the DRM composer backend Android-agnostic.
2. Not every gralloc may support mapping the HWFB buffer.

Change-Id: I661c88be276de8f068d3af1e44da2740b1bec60d
Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
3 files changed
tree: a8dd498e1dd4ba5b5291c4d056bb835c8cdebc8b
  1. .ci/
  2. backend/
  3. bufferinfo/
  4. compositor/
  5. drm/
  6. hwc2_device/
  7. hwc3/
  8. tests/
  9. utils/
  10. .clang-format
  11. .clang-tidy
  12. .gitignore
  13. .gitlab-ci.yml
  14. Android.bp
  15. Makefile
  16. meson.build
  17. MODULE_LICENSE_APACHE2
  18. NOTICE
  19. README.md
README.md

drm_hwcomposer

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!