[igt-dev] [PATCH i-g-t v3 0/2] add support for passing yuv writeback output format

[Jessica Zhang]

On 8/10/2023 1:23 PM, Abhinav Kumar wrote:
> MSM display pipeline has support for writeback to handle YUV formats.
> Currently the kms_writeback supports hard-codes the writeback output
> format to DRM_FORMAT_XRGB8888. This series makes the necessary changes
> in the lib and kms_writeback to allow passing DRM YUV formats to
> kms_writeback.
> 
> The default kms_writeback shall still use only DRM_FORMAT_XRGB8888.
> 
> Additional formats can be passed using the command line.
> 
> Sample usage of this would be:
> 
> ./kms_writeback -d -f <name of the DRM YUV fmt from igt_fb>
> 
> Currently this is supported only along with the --dump option because
> the API which computes CRC needs to be extended to handle formats
> which have more than one plane.
> 
> changes in v2:
> 	- removed an unnecessary new line
> 	- fixed petri's email address
> 
> changes in v3:
> 	- drop the changes to igt_fb_get_fnv1a_crc()
> 	- restrict the custom format to only the --dump option

Added Petri's Reviewed-by tag to both patches as agreed on IRC and 
merged to master, thanks!

[1/2] lib/igt_fb: add a helper to find drm_id from matching string
 
https://gitlab.freedesktop.org/drm/igt-gpu-tools/-/commit/8ea8b7e63e6c
[2/2] tests/kms_writeback: allow writeback to output custom format
 
https://gitlab.freedesktop.org/drm/igt-gpu-tools/-/commit/6f70e08cea1c

Thanks,

Jessica Zhang

> 
> Abhinav Kumar (2):
>    lib/igt_fb: add a helper to find drm_id from matching string
>    tests/kms_writeback: allow writeback to output custom format
> 
>   lib/igt_fb.c          | 28 ++++++++++++++++++++++++++++
>   lib/igt_fb.h          |  3 +++
>   tests/kms_writeback.c | 18 +++++++++++++++---
>   3 files changed, 46 insertions(+), 3 deletions(-)
> 
> -- 
> 2.40.1
>