Re: [PATCH v3] drm: add modifiers for Apple GPU layouts

[Sven Peter]

On Sat, Mar 1, 2025, at 23:01, Alyssa Rosenzweig wrote:
> Apple GPUs support various non-linear image layouts. Add modifiers for
> these layouts. Mesa requires these modifiers to share non-linear buffers
> across processes, but no other userspace or kernel support is
> required/expected.
>
> These layouts are notably not used for interchange across hardware
> blocks (e.g. with the display controller). There are other layouts for
> that but we don't support them either in userspace or kernelspace yet
> (even downstream), so we don't add modifiers here.
>
> Signed-off-by: Alyssa Rosenzweig <alyssa@xxxxxxxxxxxxx>
> ---

I don't understand much about GPUs but the explanation here is clear enough even for me.

Reviewed-by: Sven Peter <sven@xxxxxxxxxxxxx>


Best,


Sven