Re: [Mesa-dev] Broken rendering of glxgears on S/390 architecture (64bit, BigEndian)

2020-02-04 Thread Rob Clark
On Tue, Feb 4, 2020 at 9:42 PM Eric Anholt wrote: > > On Tue, Feb 4, 2020 at 7:54 PM Rob Clark wrote: > > > > it seems like BE vs formats (vs llvm) is a constant nightmare, because > > there are essentially no mesa dev's working on BE devices (ie. issues > > are generally discovered long after

Re: [Mesa-dev] Broken rendering of glxgears on S/390 architecture (64bit, BigEndian)

2020-02-04 Thread Eric Anholt
On Tue, Feb 4, 2020 at 7:54 PM Rob Clark wrote: > > it seems like BE vs formats (vs llvm) is a constant nightmare, because > there are essentially no mesa dev's working on BE devices (ie. issues > are generally discovered long after the fact when mesa changes finally > propagate into into

Re: [Mesa-dev] Broken rendering of glxgears on S/390 architecture (64bit, BigEndian)

2020-02-04 Thread Rob Clark
it seems like BE vs formats (vs llvm) is a constant nightmare, because there are essentially no mesa dev's working on BE devices (ie. issues are generally discovered long after the fact when mesa changes finally propagate into into enterprise distros).. but with gitlab we have now a sane scheme to

[Mesa-dev] Broken rendering of glxgears on S/390 architecture (64bit, BigEndian)

2020-02-04 Thread Stefan Dirsch
Hi Unfortunately rendering of glxgears on S/390 architecture (64bit, BigEndian) is broken on Mesa 19.3.3. I bisected the issue and the git commit id d17ff2f7, which came in between 19.2 and 19.3, caused the issue. After reverting this commit, glxgears rendering is working again. I openend

Re: [Mesa-dev] Playing with display timing -- VK_MESA_present_period

2020-02-04 Thread Keith Packard
Michel Dänzer writes: >> actual_period = n * r - ε > > Is that still an issue if the (minimal) length of a vertical blanking > period is subtracted from the computed period? What you're doing is defining a 'window' of times which match the desired frame -- any time within 'length of vertical

Re: [Mesa-dev] Playing with display timing -- VK_MESA_present_period

2020-02-04 Thread Keith Packard
Michel Dänzer writes: > Hmm, I didn't fully realize this in my reading of the draft, thanks > Matias for pointing it out! > > That the timing of frame N+1 has to be specified when submitting frame > N for presentation is odd to me TBH. While I can imagine this might be > suitable for some apps

Re: [Mesa-dev] Playing with display timing -- VK_MESA_present_period

2020-02-04 Thread Michel Dänzer
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 2020-02-03 8:48 p.m., Keith Packard wrote: > Michel Dänzer writes: > >> Instead of rounding to the nearest upcoming frame, should it >> round to the earliest frame after the specified period has >> passed? As written, it seems to contradict the

Re: [Mesa-dev] Playing with display timing -- VK_MESA_present_period

2020-02-04 Thread Michel Dänzer
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 2020-02-03 9:16 p.m., Keith Packard wrote: > "Matias N. Goldberg" writes: > >> I read your article. > > Thanks! > >> What I feel are missing are just minor pesky details: > > Yes, it's definitely a rough draft at best. Figuring out the right >