[PATCH i-g-t v3 5/7] benchmarks/kms_fb_stress: Don't paint the FB's if the format is DRM_FORMAT_RGB565

[Pekka Paalanen]

On Thu, 07 Mar 2024 16:41:07 -0300
Arthur Grillo <arthurgrillo at riseup.net> wrote:

> Cairo does not fully support the RGB565 due to some stride issues.
> So, don't paint the FB's if the format is DRM_FORMAT_RGB565.

Cairo, as it is based on Pixman, requires stride to be divisible by
sizeof(uint32_t). Pixman makes use of that requirement to go faster.

It probably wouldn't hurt if VKMS happened to have the same convention?

Anyway, it would be better to test the stride, not format. Maybe IGT
should grow a function to check if it can paint with a specific stride
& format?

> 
> Signed-off-by: Arthur Grillo <arthurgrillo at riseup.net>
> ---
>  benchmarks/kms_fb_stress.c | 55 ++++++++++++++++++++++++++++++++++------------
>  1 file changed, 41 insertions(+), 14 deletions(-)

Thanks,
pq
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