Improved opengl detection and ArgumentParser help.

[Michael Weber]

The argumentparser does not handle the auto logic of config values set to None. Please consider this for improvement.

​http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/x11-wm/xpra/files/xpra-0.9.5-opengl-auto.patch?revision=1.1&view=markup

[Antoine Martin]

Patch partially applied in r3761:

• moved the print_bool to the display string (and not the argument value which is always expected to be a boolean)
• the other part of the patch makes OpenGL enabled by default on platforms that support it - I'm not sure we are ready for this... does this work ok for you? have you seen any visual corruption or any bugs?

We could enable it if it passes all the tests, assigning to ahuillet to review the status as I can't find any outstanding opengl issues.

[Michael Weber]

Replying to antoine:

Patch partially applied in r3761:

• the other part of the patch makes OpenGL enabled by default on platforms that support it - I'm not sure we are ready for this... does this work ok for you? have you seen any visual corruption or any bugs?

No bugs yet, but I haven't used it excessively.

[ahuillet]

As far as I can tell there still are issues with Windows 7. Do you want me to check with latest release?

[Antoine Martin]

Please check, see also #372

[Antoine Martin]

afarr/SmO: is it usable on windows, or should it still be disable by default?

(I am tempted to enabled it on posix)

[alas]

Smo and I are both having issues (like with osx, #379, logs posted at comment 14) with sound dropping with the windows client (r3908). It doesn't seem to be opengl related, but it's hard to decide how well the opengl is working when sound keeps dropping. (Seems ok?)

[Antoine Martin]

...it's hard to decide how well the opengl is working when sound keeps dropping

How so? Why not just leave the sound off for testing GL?

FYI: for testing, the best thing I have found for stress testing is to run one or both of:

• mplayer as it spits out lots of text to the terminal, and the video to another window

  mplayer somefile.avi
  

• gtkperf in a loop from an xterm:

  while true; do gtkperf -a; sleep 0.1; done
  

[alas]

Well, once sound issues are set aside, OpenGL is working very nicely with win client (r3971). .avi file plays well, gtkperf displays errors elegantly (don't seem to have it installed), was even able to watch silent youtube video at the same time as playing a .avi file, with only the smallest bit of video chop on either.

Looks good.

[Antoine Martin]

I'm still not 100% convinced that OpenGL rendering is 100% stable (not necessarily because of our code - could well be (py)gtkgl or the drivers or X11 or a combination thereof - but I am keeping it enabled by default for this release... we'll see what falls out.

[migration script]

this ticket has been moved to: ​https://github.com/Xpra-org/xpra/issues/367