jittering moons [0.13.2]

[gzotti]

With atmosphere off (!!?), Neptun's and also Pluto's moons jitter.

I think only the halos jitter, the marker circles are ok. For dim moons, no body is drawn, so the jittering halo is quite apparent here.

Clearly a float/double issue! Why/where does this occur depending on atmosphere?

[Nick Fedoseev (nick-ut2uz)]

Jitter looks very similar to described in Bug #1411958
Appears only if atmosphere is turned on.

[Alexander Wolf (alexwolf)]

A fix has been committed as revision 7370 of the trunk branch of Stellarium's Bazaar repository at Launchpad: http://bazaar.launchpad.net/~stellarium/stellarium/trunk/revision/7370

P.S. Re-introduce patch by Mykyta Sytyi from revision 5274.

[gzotti (georg-zotti)]

@Nick: It is float/double-related, but actually also appeared on 32bit MinGW, so it is not compiler/platform dependent as the flickering moon. The blinking ring (#1416822) may be related, it is 64bit only.

I now thought StelSkyDrawer.postDrawSky3dModel() may need to be fixed as well, but the changes by Alex already seem to have solved the issue.

[Nick Fedoseev (nick-ut2uz)]

Just updated and rebuilt the latest sources from Bazaar.
I still see the same problem. Perhaps I watch a wrong direction. There are white rings around Neptune. They jitters/flikering if atmosphere is turned on.

[Alexander Wolf (alexwolf)]

Yes, it's a wrong direction, because the current report are related to jittering of the halos of the moons.

[gzotti (georg-zotti)]

Nick, you are followinng/commenting the wrong bug report!
Go here: https://bugs.launchpad.net/stellarium/+bug/1416822

[Nick Fedoseev (nick-ut2uz)]

Sorry.
Thanks for pointing the right direction.