[Mesa-dev] [PATCH] st/va:Aligned image width and height to 16.

[Sharma, Deepak]

16 was considering UVD.

in vlVagetImage, the width,height passed to function is not used but rather the surface width/height and that causes issue in this case,not sure how driver will handle that ?

________________________________
From: Ilia Mirkin <imirkin at alum.mit.edu>
Sent: Monday, October 1, 2018 6:49 PM
To: Sharma, Deepak
Cc: ML Mesa-dev; Guttula, Suresh
Subject: Re: [Mesa-dev] [PATCH] st/va:Aligned image width and height to 16.

On Mon, Oct 1, 2018 at 9:47 PM Sharma, Deepak <Deepak.Sharma at amd.com> wrote:
>
> From: suresh guttula <suresh.guttula at amd.com>
>
> In case of decoding of resolution like 40x24, while allocating surface
> video buffer is always aligned with macroblock width/height which is 16.
> But when application tries to get data after decoding through vaCreateImage
> /vaGetImage, image width/height aligned with 2 and result a smaller image
> buffer which causes the memory stomping issue.

Shouldn't the driver be allocating a larger backing texture instead?
Why 16 and not 8 or 32 or 4096?

  -ilia
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