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Seeking Enlightenment (The H)

Seeking Enlightenment (The H)

Posted Nov 2, 2012 0:44 UTC (Fri) by ssmith32 (subscriber, #72404)
In reply to: Seeking Enlightenment (The H) by ovitters
Parent article: Seeking Enlightenment (The H)

How good are the lower-end graphics chips used on phones and other SoC at compositing? I have no idea, but this is the only place I can imagine it would be relevant anymore..


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Seeking Enlightenment (The H)

Posted Nov 2, 2012 4:20 UTC (Fri) by mjg59 (subscriber, #23239) [Link]

Completely capable. Nobody ships a smartphone without an entirely competent GPU these days.

Seeking Enlightenment (The H)

Posted Nov 2, 2012 9:56 UTC (Fri) by nhippi (subscriber, #34640) [Link]

Speed is good even at the lowest end. However, many GPU drivers are either closed (nvidia, mali), buggy (ati) or both (powervr). This means really good 3D acceleration is only available to intel graphics these days...

So one might prefer software compositing simply for the stability.

A bit out of date

Posted Nov 2, 2012 10:35 UTC (Fri) by niner (subscriber, #26151) [Link]

The free radeon graphics driver is perfectly usable for a composited desktop. I guess nouveau is in the same category. So even people like me who do not want to use the closed drivers find no lack of support. This leaves only PowerVR on traditional computers which ironically is used on some Intel systems.

A bit out of date

Posted Nov 2, 2012 14:29 UTC (Fri) by vonbrand (guest, #4458) [Link]

Running Gnome 3 full with nouveau here, no issues.

A bit out of date

Posted Nov 2, 2012 18:47 UTC (Fri) by luto (subscriber, #39314) [Link]

Am I the only one with serious radeon compositing issues? I have:

08:00.0 VGA compatible controller: ATI Technologies Inc NI Caicos [AMD RADEON HD 6450]

gnome-shell is painfully slow. Cinnamon draws its desktop overview at about one frame every three seconds.

A bit out of date

Posted Nov 2, 2012 21:50 UTC (Fri) by colo (subscriber, #45564) [Link]

Are you sure you have the radeon firmware blobs installed and properly loaded by the DRM module? Without them, you won't get properly hw-accelerated OpenGL on many of AMDs more recent GPUs.

A bit out of date

Posted Nov 2, 2012 23:04 UTC (Fri) by luto (subscriber, #39314) [Link]

Updating drivers to git from today fixed it. Tiling makes a big difference on low-end (and thus low memory bandwidth) radeons, apparently.


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