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-   -   [260.19.21] RFE: gradient support (http://www.nvnews.net/vbulletin/showthread.php?t=157352)

mooninite 11-21-10 01:43 PM
[260.19.21] RFE: gradient support
 
Cairo 1.10.0 turned on calls to hardware gradients, which seem to be dreadfully slow in the NVIDIA driver. Is it possible to have the NVIDIA driver changed so that these are sped up?

References:
http://bugs.freedesktop.org/show_bug.cgi?id=30103
https://bugzilla.redhat.com/show_bug.cgi?id=649955
http://www.nvnews.net/vbulletin/showthread.php?t=156885

mooninite 11-29-10 04:04 PM
Re: [260.19.21] RFE: gradient support
 
Bump. Hope everyone had a nice holiday.

Cairo folks won't fix the issue so unless I'm mistaken, the NVIDIA driver will need to be fixed.

AaronP 11-29-10 06:52 PM
Re: [260.19.21] RFE: gradient support
 
Gradients are accelerated on recent GPUs, but there are a couple of bugs that cause corruption issues that we're working on fixing.

mooninite 11-30-10 12:05 AM
Re: [260.19.21] RFE: gradient support
 
Quote:
Originally Posted by AaronP (Post 2357188)
Gradients are accelerated on recent GPUs, but there are a couple of bugs that cause corruption issues that we're working on fixing.
Would the corruption issues introduce slow performance as a side effect? The issue is performance.

AaronP 11-30-10 01:21 PM
Re: [260.19.21] RFE: gradient support
 
Quote:
Originally Posted by mooninite (Post 2357296)
Would the corruption issues introduce slow performance as a side effect? The issue is performance.
No.

mooninite 11-30-10 02:21 PM
Re: [260.19.21] RFE: gradient support
 
Quote:
Originally Posted by AaronP (Post 2357539)
No.
GPUs from GeForce 9 series to the GeForce 400 series suffer from extremely poor performance with gradients being enabled under cairo 1.10. The URLs I referenced in the first post contain additional evidence. I apologize if I was not clear enough on my first post.

The workaround at the moment is to disable the gradient calls in cairo 1.10.

mooninite 12-07-10 11:54 AM
Re: [260.19.21] RFE: gradient support
 
Another affected user: http://www.nvnews.net/vbulletin/showthread.php?t=157227

Tronic 12-13-10 08:54 PM
Re: [260.19.21] RFE: gradient support
 
I haven't seen any corruption issues with Fedora 14 / Nvidia 260.19.12 but the UI is extremely slow with the default theme. Switching to Mist theme (which has no gradients) makes it fast but ugly.

Tronic 01-20-11 08:00 AM
Re: [260.19.21] RFE: gradient support
 
Fedora has apparently pushed an update that avoids the problem (using software rendering instead).

artem 01-21-11 03:37 PM
Re: [260.19.21] RFE: gradient support
 
The update was pushed a month ago.

mooninite 01-23-11 01:28 PM
Re: [260.19.21] RFE: gradient support
 
FYI: The Fedora update is temporary and Fedora 15 will not include it (and will never include it).

NVIDIA must still fix the gradient issue.

Licaon 01-24-11 01:04 AM
Re: [260.19.21] RFE: gradient support
 
Quote:
Originally Posted by mooninite (Post 2382241)
NVIDIA must still fix the gradient issue.
didn't they already?
Quote:
...
*Fixed several bugs relating to hardware-accelerated gradients, which were causing visual corruption in some of the default Ubuntu GNOME themes.
...
@270.18 BETA


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