FYI: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5677
Dave. On Thu, 21 May 2020 at 05:14, Roland Scheidegger <srol...@vmware.com> wrote: > > Oh I missed that sparc is big endian. > Still not sure where the llvm IR would differ but indeed some different > unpacking somewhere could explain things. > (And I'd guess we'd get issues reported for other big endian archs soon > enough too...) > > Roland > > > Am 19.05.20 um 22:00 schrieb Adam Jackson: > > On Wed, 2020-05-13 at 18:27 +0200, Petr Sumbera wrote: > >> Hi, > >> > >> I have difficulties with Mesa update from version Mesa 18 (LLVM 6) where > >> it used to work. > >> > >> Now with Mesa 20 and LLVM 10 glxgears doesn't show wheels but just some > >> random rectangles. Please see attached picture. > >> > >> Any idea what could be possibly wrong? > > > > You have the misfortune to be using a big-endian CPU, and that > > corruption looks quite a lot like the vertex processing stage getting > > channel order wrong. Since the internals of both TGSI and NIR ought to > > be endian-indifferent, I suspect the error would be at point where you > > acquire the vertex data from the app and need to do machine-specific > > unpacking, but that's just a guess. Dumping the IR generated by each > > should hopefully be instructive. > > > > It might also be worth trying to build Mesa 20 against LLVM 6 to see if > > that points to anything in LLVM, but that's probably a bit less likely. > > > > - ajax > > > > _______________________________________________ > > mesa-dev mailing list > > mesa-dev@lists.freedesktop.org > > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Fmesa-dev&data=02%7C01%7Csroland%40vmware.com%7C257d443c503846a91b3708d7fc2f4a38%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C0%7C1%7C637255152405729735&sdata=6bzf3CQhwNaivcjX4%2BnqxjDJ2TaIdI8MDArHSwgVxSo%3D&reserved=0 > > > > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/mesa-dev _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
