[Bug 92925] Incorrect GEN for ASTC in Surface Format Table

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92925

--- Comment #2 from Nanley Chery <nanleychery at gmail.com> ---
(In reply to Kenneth Graunke from comment #1)
> By Gen8.5 do you mean Cherryview/Braswell?
> 

Yes. Looking at the Bspec, it seems like CherryView actually isn't 8.5. 

> We've not had a good solution for encoding the atom parts in the table.
> 
> For example, Ivybridge is Gen 7, Haswell is Gen 7.5, and Baytrail...doesn't
> have most of the features from Haswell (so it'd be Gen 7.1/2/3/4?) but also
> has features from Broadwell (so, Gen 7.6/7/8/9?).  It just didn't fit at
> all, so we left it as "7" and put in special cases for it.
> 
> I guess for Cherryview we could consider it Gen 8.<something>.

I'm fine with giving it a decimal point if everyone agrees on an atom part
naming scheme. Another possible solution is to modify
brw_init_surface_formats(). I'm not yet sure what the best solution is.

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