On Tue, Jul 7, 2015 at 5:16 PM, Ben Skeggs <skeg...@gmail.com> wrote: > On 8 July 2015 at 07:09, Ilia Mirkin <imir...@alum.mit.edu> wrote: >> On Tue, Jul 7, 2015 at 5:05 PM, Ben Skeggs <skeg...@gmail.com> wrote: >>> On 8 July 2015 at 06:06, Ilia Mirkin <imir...@alum.mit.edu> wrote: >>>> Ben, >>>> >>>> Looks like the reality is that glamor is just not hooked up properly >>>> in the nouveau DDX. Mainly it's missing DRI2, which in turn means no >>>> core GL contexts, and probably lots of other issues. While this could >>>> probably be fixed somehow, I doubt there's any advantage to using the >>>> nouveau DDX over something like modesetting nowadays. >>>> >>>> How would you feel about dropping glamor support from the nouveau ddx >>>> and failing to load for GPUs that don't have EXA support (unless >>>> AccelMode = none is forced for them). That way it'll fall back to >>>> loading modesetting which should be properly set up for DRI2 and so >>>> on. >>> I have no objections to this. In fact, in Fedora at least (I floated >>> the idea in #nouveau a while back too), in the near future I plan on >>> having the DDX fail to load on all GPUs where modesetting+glamor can >>> be used (unless overridden by a config option). >> >> IMHO that's a little strong (I assume you mean nv50+ here?). In fact >> I'm planning to complete my Maxwell EXA impl. The current reality is >> that modesetting+glamor doesn't render correctly at least on maxwell, >> but possibly others as well. The EXA paths are very well tested and >> are stable. I think not relying on mesa in the DDX is a nice advantage >> too. > The reality is that this is what people will be using when the big > switch to wayland by default happens, and the idea is to limit the > number of codepaths we have to care about and maintain.
Yeah, in 100 years when it actually works :p > I'm aware > that there are a few rendering issues left in glamor (I'm not sure if > it's glamor, or our 3D driver having some bugs), but we should > probably just fix those :) I'm all for fixing bugs in the 3D drivers. But until that happens, no reason that users should suffer. [I also definitely know some people specially don't have mesa installed so that they get 2d accel but no 3d accel since nouveau can be so hang-y.] > > I believe Dave plans on doing something similar in Intel/Radeon too. I think those kernel drivers tend to be a lot more stable. The nouveau kernel driver hangs left and right though under any actual 3d load. And yeah, the "2d" accel is all 3d anyways, but it's a lot less code and it's been way more tested. -ilia _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/nouveau
