<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Regression in Mesa 17 on s390x (zSystems)" href="https://bugs.freedesktop.org/show_bug.cgi?id=100613#c33">Comment # 33</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Regression in Mesa 17 on s390x (zSystems)" href="https://bugs.freedesktop.org/show_bug.cgi?id=100613">bug 100613</a> from <a class="email" href="mailto:intermediadc@hotmail.com" title="intermediadc@hotmail.com <intermediadc@hotmail.com>"> intermediadc@hotmail.com</a> <pre>(In reply to Stefan Dirsch from <a href="show_bug.cgi?id=100613#c0">comment #0</a>) > I've observed a regression in Mesa 17 on s390x (zSystems). It's hard to > describe. Here is a video on Youtube. > > <a href="https://youtu.be/xaYauE0Kn8E">https://youtu.be/xaYauE0Kn8E</a> > > On the left side glxgears is running on x86_64, on the left side it's > running on s390x(zSystems) - a 64bit bigendian platform. gdm and gnome-shell > show a black screen. I haven't screenhoted that though (since it's boring). > > I git bisected Mesa and the culprit patch was > > From e827d9175675aaa6cfc0b981e2a80685fb7b3a74 Mon Sep 17 00:00:00 2001 > From: Roland Scheidegger <<a href="mailto:sroland@vmware.com">sroland@vmware.com</a>> > Date: Wed, 21 Dec 2016 04:43:07 +0100 > Subject: [PATCH] draw: use SoA fetch, not AoS one > > Now that there's some SoA fetch which never falls back, we should always get > results which are better or at least not worse (something like rgba32f will > stay the same). > > When reverse-applying this patch on Mesa 17.0.3 the regression on s390x gets > fixed. > > Mesa has been compiled with > > ./configure --host=s390x-ibm-linux-gnu --build=s390x-ibm-linux-gnu > --program-prefix= --disable-dependency-tracking --prefix=/usr > --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc > --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64 > --libexecdir=/usr/lib --localstatedir=/var --sharedstatedir=/usr/com > --mandir=/usr/share/man --infodir=/usr/share/info > --disable-dependency-tracking --enable-gles1 --enable-gles2 --enable-dri > --with-egl-platforms=x11,drm --enable-shared-glapi --enable-texture-float > --enable-osmesa --enable-dri3 --enable-shader-cache --enable-gbm > --enable-glx-tls --with-dri-searchpath=/usr/lib64/dri --enable-gallium-llvm > --enable-llvm-shared-libs --enable-vdpau --enable-va --enable-xvmc > --with-dri-drivers=swrast --with-gallium-drivers=swrast > 'CFLAGS=-fmessage-length=0 -grecord-gcc-switches -fstack-protector -O2 -Wall > -D_FORTIFY_SOURCE=2 -funwind-tables -fasynchronous-unwind-tables -g -DNDEBUG' Hi Stefan sorry for asking this small ot, how is the situation there on RadeonSi Mesa EGL? here on Qoriq and on PowerMac G5 glamor crashes if invoche egl_radeonsi and made the Xorg not usable. There there is the same situation?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>