[Mesa-dev] [PATCH 2/5] gallium: Add support for 5551 with the 1-bit field in the low bit.

[Eric Anholt]

Roland Scheidegger <sroland at vmware.com> writes:

> Am 02.05.2017 um 21:33 schrieb Eric Anholt:
>> ---
>> 
>> Do I have the swizzles right here?  It's a bit complicated because I
>> have a reswizzle in vc4, so I may have just massaged things to work
>> out in my case.  I tried a lot of combinations trying to specify BE
>> swizzles in a way that wouldn't assertion fail in the python script,
>> with no luck.
>
> For BE shouldn't this just be un5,un5,un5,un1(x1),xyzw(1)?
> Otherwise this looks alright to me. But don't take my word for it I
> often get confused here :-).
> Though you only say "1-bit field in the low bit" so I don't know what
> ordering you really want - that still leaves the choice of the two
> common abgr and argb orderings :-). But the name and swizzles seem to
> agree here as far as I can tell...

That seems to work.  Not sure how I missed that option before.
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