On 10/07/2014 11:11 PM, Jason Ekstrand wrote:

On Oct 8, 2014 6:36 AM, "Iago Toral" <ito...@igalia.com
<mailto:ito...@igalia.com>> wrote:
 >
 > El 2014-10-07 21:46, Jason Ekstrand escribió:
 >
 >> On Oct 7, 2014 12:04 PM, "Iago Toral Quiroga" <ito...@igalia.com
<mailto:ito...@igalia.com>>
 >> wrote:
 >>  >
 >>  > There is a comment warning about the fact that this is not doing
 >> what we
 >>  > expect, so fix it. This should be doing the same as
 >> unpack_B5G6R5_UNORM
 >>  > but swapping B and R.
 >>  > ---
 >>  >
 >>  > Jason started some work to auto-generate the format_pack.c and
 >>  > format_unpack.c files which I think has this fixed. I am continuing
 >> his
 >>  > work on this at the moment, but I guess it might make sense to fix
 >> this in
 >>  > the current code too while that work is on-going.
 >>
 >> Not much time to reply right now, but I seem to recall there being a
 >> bit more to fix here.  What about packing and swrast's texel fetch
 >> implementation.  Are those OK for this format?
 >>
 >>> No piglit regressions observed.
 >>
 >>
 >> On what drivers?  It might be good to test on swrast and llvmpipe.
 >> I'm not super-concerned there but we should at least try not to break
 >> it.
 >>  --Jason
 >
 >
 > That was on Intel, but you are right, at least classic swrast has
some regressions with this.
 >
 > For reference, I did not see any regressions on Gallium Softpipe but
I could only run a small subset of tests with this driver (-t texture -t
color -t format)  or otherwise it would hog my CPU and eventually crash
my system. Could not test with llvmpipe, for some reason, even when I am
bulding with llvm and I see the llvmpipe sources being built Mesa
insists in using the softpipe driver at runtime...

I can give you the configure flags for testing llvmpipe if you'd like.
Yes, doing a full piglit run on llvmpipe or swrast requires a pretty
beefy desktop and still takes quite a while.

 > Since there are regressions on swrast at least I guess we should just
drop this patch until we have a proper fix for all drivers.

I'm not as worried about llvmpipe because it fails about half the tests
it attempts anyway.  I would like to know what's going on with swrast
though.

Brian, any ideas?

--Jason

Not of the top of my head.  I'll be mostly off-line until next week...

-Brian


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