Re: [PATCH 2/2] drm: vc4: enable XBGR8888 and ABGR8888 pixel formats

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Eric Anholt <eric@xxxxxxxxxx> writes:

> Rob Herring <robh@xxxxxxxxxx> writes:
>
>> DRM_FORMAT_XBGR8888 and DRM_FORMAT_ABGR8888 are 2 of the native formats
>> used in Android, so enable them for VC4. There seems to be no logic behind
>> HVS_PIXEL_ORDER_xxxx naming, but HVS_PIXEL_ORDER_ARGB seems to work
>> correctly.
>
> Spent a little bit digging into how the pixel orderings work and didn't
> come up with an answer.  I'll try to look into this one again later.

Never came up with a good answer, but it's rendering correctly in
modetest, so I've reviewed and applied it to drm-vc4-next.

Thanks!

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