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jhon987
Guru
Joined: 18 Nov 2013
Posts: 301
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 Posted: Thu Jun 23, 2016 2:19 pm Post subject: OpenGL and EGL together on desktop? |
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Hi guys,
To my understandings, in essence, EGL is an API graphics library meant for embedded devices (i.e non desktop ones) whilst OpenGL is for the desktop.
If that is so, I'm wondering - some packages allow for both useflags to be enabled at once, such as: net-libs/webkit-gtk, media-video/mpv, etc...
If I'm running Gentoo on the desktop and enables both, which one will be used by these packages?
(Obviously, I'm looking to use only the optimal one)
Last edited by jhon987 on Thu Jun 23, 2016 3:47 pm; edited 1 time in total |
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toralf
Developer
Joined: 01 Feb 2004
Posts: 3925
Location: Hamburg
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| Posted: Thu Jun 23, 2016 3:01 pm Post subject: |
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| I kicked off die USE flags egl, gles and gles2 from my system - now KDE KF5 menus are much more responsive and quicker than before. |
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jhon987
Guru
Joined: 18 Nov 2013
Posts: 301
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| Posted: Thu Jun 23, 2016 3:46 pm Post subject: |
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| toralf wrote: | | I kicked off die USE flags egl, gles and gles2 from my system - now KDE KF5 menus are much more responsive and quicker than before. |
Yeah, not using egl, gles, gles2 was my starting point, but now I want to check out Wayland progress with KDE 5 and for some reason I must use egl for gst-plugins-bad.
From what I read, it seems that Wayland makes use of egl because it's modular, whereas OpenGL relies on X-server or something.
So, in the mind that Wayland will become my default sooner or later, I wonder how will using egl affect my system...? |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Thu Jun 23, 2016 8:08 pm Post subject: |
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| Turn the flags on for Mesa, leave them off everywhere else when opengl is an option. That seems to be the safest way to set things up at the moment. |
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jhon987
Guru
Joined: 18 Nov 2013
Posts: 301
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| Posted: Fri Jun 24, 2016 1:32 pm Post subject: |
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Guys thank you for the advice but I already know what to do with my use flags...
I'm just interested in knowing which one of the flags (egl or opengl) will be used upon enabling both? or will they both be used somehow? |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Fri Jun 24, 2016 5:31 pm Post subject: |
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| That depends on what each individual ebuild and source package does with them... but usually EGL disables full OpenGL. |
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jhon987
Guru
Joined: 18 Nov 2013
Posts: 301
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| Posted: Sat Jun 25, 2016 9:26 am Post subject: |
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| Ant P. wrote: | | That depends on what each individual ebuild and source package does with them... but usually EGL disables full OpenGL. |
OK, thanks.
That's the kind of information I was looking for, if you have more specific info, or you can refer me to some links that'd be great too |
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asturm
Developer
Joined: 05 Apr 2007
Posts: 8942
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| Posted: Sat Jul 02, 2016 7:58 am Post subject: |
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| Enabling egl just gives you the option in systemsettings' compositor to switch between GLX and EGL. But gles2 should be avoided in Qt/Frameworks/Plasma packages as it disables full OpenGL and leads to bugs at least at the moment. |
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