> On Nov. 30, 2015, 10:18 a.m., Martin Gräßlin wrote: > > What does QT_XCB_FORCE_SOFTWARE_OPENGL? > > David Edmundson wrote: > It makes Qt apps pretend LIBGL_ALWAYS_SOFTWARE is set. > > Martin Gräßlin wrote: > Sorry, but that doesn't do what you hope it does: > > - only affects Mesa drivers > - if Mesa is broken for whatever reason the software rasterizer will also > be broken > - kwin does something completely different with failsafe: no OpenGL at > all. > > So if you get crashers due to e.g. broken NVIDIA driver, this won't fix > it. > > David Edmundson wrote: > Yeah, I knew it didn't fix nvidia. > > I know it's not perfect, but I have seen user's on bugzilla with positive > results from it, so when I saw this code block (whilst editing something > else) it seemed like it might fix some situations, and I can't see any real > downsides.
> I can't see any real downsides the downside is that it switches to CPU rendering. Which seems not the best thing to do in general. I cannot imagine a situation where the actual mesa drivers are broken and llvmpipe wouldn't be broken, too. So I just don't see what this would improve for fail safe. I don't see a possible improvment, so for me the downside (CPU rendering) seems worse. Any pointers to bug reports where users had a broken mesa, but a still working llvmpipe can change my mind ;-) - Martin ----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://git.reviewboard.kde.org/r/126205/#review88943 ----------------------------------------------------------- On Nov. 30, 2015, 10:13 a.m., David Edmundson wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://git.reviewboard.kde.org/r/126205/ > ----------------------------------------------------------- > > (Updated Nov. 30, 2015, 10:13 a.m.) > > > Review request for Plasma. > > > Repository: plasma-workspace > > > Description > ------- > > Graphics seem more likely than anything else to be broken, if the user > explicitly selects failsafe mode from the DM we should follow the same > rationale as kwin and not trust the user's drivers. > > > Diffs > ----- > > startkde/startkde.cmake 41a8975cce1fb2a4e7a034e697ce6e2cc59d5b1e > > Diff: https://git.reviewboard.kde.org/r/126205/diff/ > > > Testing > ------- > > > Thanks, > > David Edmundson > >
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