[Mesa-dev] [PATCH 2/3] radeonsi: add sampling of 4:2:2 subsampled textures

[Andy Furniss]

Grigori Goronzy wrote:
> On 18.06.2014 13:11, Christian König wrote:
>> @Grigori: Should I push it or did you got your account in the
>> meantime?

Bit late but I only just noticed this went in.

This is a really useful feature for me, having recently got a radeonsi,
as it lets me use my tvs deinterlacer.

Now for the but :-)

It doesn't work, I don't think it's to do with this specific code as I
noticed and mentioned before that I thought 422 + weave shader didn't work.

My old card was a a 4890, so didn't have uvd and used the progressive
shader - 422 worked OK with that.

Before I knew how to get field sync to use my TVs deinterlacer I had to
modify mesa so that I could use the vdpau de-interlacer(s), when I did
this I noticed that 422 didn't work and looked the same as it does now
this has gone in with my si.

It's not obvious without the right test - it mostly just looks like 420,
with a very slight spatial error that shows on one test I have after
upscaling.