[260.19.21] RFE: gradient support

mooninite · 11-21-10, 01:43 PM

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

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

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

Quote:

Originally Posted by AaronP

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

Quote:

Originally Posted by mooninite

Would the corruption issues introduce slow performance as a side effect? The issue is performance.

No.

mooninite · 11-30-10, 02:21 PM

Quote:

Originally Posted by AaronP

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

Another affected user: http://www.nvnews.net/vbulletin/showthread.php?t=157227

Tronic · 12-13-10, 08:54 PM

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

Fedora has apparently pushed an update that avoids the problem (using software rendering instead).

artem · 01-21-11, 03:37 PM

The update was pushed a month ago.

mooninite · 01-23-11, 01:28 PM

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

Quote:

Originally Posted by mooninite

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

11-21-10, 01:43 PM	#1
mooninite Registered User Join Date: May 2006 Posts: 477	[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

11-29-10, 04:04 PM	#2
mooninite Registered User Join Date: May 2006 Posts: 477	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.

11-29-10, 06:52 PM	#3
AaronP NVIDIA Corporation Join Date: Mar 2005 Posts: 2,487	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.

12-07-10, 11:54 AM	#7
mooninite Registered User Join Date: May 2006 Posts: 477	Re: [260.19.21] RFE: gradient support Another affected user: http://www.nvnews.net/vbulletin/showthread.php?t=157227

12-13-10, 08:54 PM	#8
Tronic Registered User Join Date: Jul 2004 Posts: 35	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.

01-20-11, 08:00 AM	#9
Tronic Registered User Join Date: Jul 2004 Posts: 35	Re: [260.19.21] RFE: gradient support Fedora has apparently pushed an update that avoids the problem (using software rendering instead).

01-21-11, 03:37 PM	#10
artem Registered User Join Date: Jun 2006 Posts: 680	Re: [260.19.21] RFE: gradient support The update was pushed a month ago.

01-23-11, 01:28 PM	#11
mooninite Registered User Join Date: May 2006 Posts: 477	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.