> On July 29, 2014, 2:01 p.m., Sebastian Kügler wrote: > > I'm all for this, as it means we reduce the set of features we use from the > > underlying stack. We're even focusing on the features that will get more > > testing (since it's mobile, and that's the hype). I consider it an > > advantage if we can use a more restricted API, and communicate that we > > don't care about "random OpenGL extensions", instead asking "make sure the > > OpenGL-ES implementation" is sound and works for us. > > > > It would be useful to hear from Martin if there's any technical problem > > with this strategy. We should also align this kind of decisions with KWin. > > (Perhaps the same is a serious option for KWin?) > > > > From my personal experience, I've tested the OpenGL-ES options we had for > > some time, and never ran into a regression caused by moving from OpenGL to > > OpenGL-ES.
Martin G shares his thoughts here: https://bugreports.qt-project.org/browse/QTBUG-40341 I'm not sure I understand all of it though :) - David ----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://git.reviewboard.kde.org/r/119524/#review63437 ----------------------------------------------------------- On July 28, 2014, 6:09 p.m., Aleix Pol Gonzalez wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://git.reviewboard.kde.org/r/119524/ > ----------------------------------------------------------- > > (Updated July 28, 2014, 6:09 p.m.) > > > Review request for Plasma. > > > Repository: plasma-workspace > > > Description > ------- > > When trying to reduce memory usage in plasma shell, we realized that one of > the reasons we got such big memory footprint was actually the intel driver > (on intel systems, that is). After some investigation, David found out we > were going through some memory-consuming path [1]. A way to workaround it is > by using only OpenGLES. Everything still works here after this patch, so it > seems to be a good change to get in. > > This change needs Qt 5.4, to get the new API that lets us enforce a > QSurfaceFormat, hence having it ifdef'd. > I'm quite unaware of problems we might find. Knowing we probably want to work > in different embedded devices, suggests that OpenGLES on all platforms sounds > like a safe bet. > > [1] http://comments.gmane.org/gmane.comp.video.mesa3d.devel/60848 > > > Diffs > ----- > > shell/main.cpp e34578d > > Diff: https://git.reviewboard.kde.org/r/119524/diff/ > > > Testing > ------- > > I'm using it now, without visible problems. Now we see no trace of i915 in > the massif reports. > > > File Attachments > ---------------- > > before > > https://git.reviewboard.kde.org/media/uploaded/files/2014/07/28/5a6beb4f-24c0-4cee-a7a2-038385e35119__plasma-massif-opengl.png > after > > https://git.reviewboard.kde.org/media/uploaded/files/2014/07/28/fc301ff5-cb1d-4654-a57f-82990220c8e3__plasma-massif-opengles.png > > > Thanks, > > Aleix Pol Gonzalez > >
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