Please test: Blur on y-axis also when only x-axis is scaled billiear

Clemens Eisserer

8 Jun 2009 8 Jun '09

10:14

Hi, I've just found something which looks like a bug in the Radeon/RadeonHD EXA code. When scaling a picture in x-axis and billinear filtering is requested, the y-axis is blurred too. However the version I tested against was the one shipped with Ubuntu-9.04, and I don't have a RadeonHD powered machine myself to investigate further with latest code. Could somebody with the latest drivers please run the testcase attached (gcc -lX11 -lXrender testcase.c -o test). The expected result is a single-pixel wide line which fades out at the ends, the pathological one is a line smeared also in the y-directions. If it fails, it would be great if you could send me a screenshot :) Thank you in advance, Clemens

Attachments:

testcase.c (text/plain — 4.4 KB)

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Matthias Hopf

8 Jun 8 Jun

10:59

New subject: Please test: Blur on y-axis also when only x-axis is scaled billiear

On Jun 08, 09 06:14:42 -0400, Clemens Eisserer wrote:

...

I've just found something which looks like a bug in the Radeon/RadeonHD EXA code. When scaling a picture in x-axis and billinear filtering is requested, the y-axis is blurred too.

Can you send a screenshot as well? Thanks Matthias -- Matthias Hopf __ __ __ Maxfeldstr. 5 / 90409 Nuernberg (_ | | (_ |__ mat@mshopf.de Phone +49-911-74053-715 __) |_| __) |__ R & D www.mshopf.de -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org

Clemens Eisserer

11:49

New subject: Please test: Blur on y-axis also when only x-axis is scaled billiear

Hi Matthias, The first (top) line was rendered with pixman (NoAccel), the second line with exa on my HD3850 / Ubuntu 9.04 live cd. This causes problems with themes that cache pre-rendered elements in pixmaps and use them scaled later on. (E.g. button outline is blurred instead of sharp 1px line). Thanks, Clemens 2009/6/8 Matthias Hopf :

...

On Jun 08, 09 06:14:42 -0400, Clemens Eisserer wrote:

...
I've just found something which looks like a bug in the Radeon/RadeonHD EXA code. When scaling a picture in x-axis and billinear filtering is requested, the y-axis is blurred too.

Can you send a screenshot as well?

Thanks

Matthias

-- Matthias Hopf __ __ __ Maxfeldstr. 5 / 90409 Nuernberg (_ | | (_ |__ mat@mshopf.de Phone +49-911-74053-715 __) |_| __) |__ R & D www.mshopf.de -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org

Matthias Hopf

11:52

New subject: Please test: Blur on y-axis also when only x-axis is scaled billiear

On Jun 08, 09 07:49:24 -0400, Clemens Eisserer wrote:

...

The first (top) line was rendered with pixman (NoAccel), the second line with exa on my HD3850 / Ubuntu 9.04 live cd.

This indeed looks very wrong. Alex, any ideas? Matthias -- Matthias Hopf __ __ __ Maxfeldstr. 5 / 90409 Nuernberg (_ | | (_ |__ mat@mshopf.de Phone +49-911-74053-715 __) |_| __) |__ R & D www.mshopf.de -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org

Clemens Eisserer

10 Jun 10 Jun

10:18

New subject: Please test: Blur on y-axis also when only x-axis is scaled billiear

Hi again, Could somebody please re-test on a recent driver build to see wether the problem still persists? Furthermore should I open a bug-report about this issue? Thanks again, Clemens 2009/6/8, Matthias Hopf :

...

On Jun 08, 09 07:49:24 -0400, Clemens Eisserer wrote:

...
The first (top) line was rendered with pixman (NoAccel), the second line with exa on my HD3850 / Ubuntu 9.04 live cd.

This indeed looks very wrong. Alex, any ideas?

Matthias

-- Matthias Hopf __ __ __ Maxfeldstr. 5 / 90409 Nuernberg (_ | | (_ |__ mat@mshopf.de Phone +49-911-74053-715 __) |_| __) |__ R & D www.mshopf.de

-- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org

Alex Deucher

14:39

New subject: Please test: Blur on y-axis also when only x-axis is scaled billiear

On Wed, Jun 10, 2009 at 6:18 AM, Clemens Eisserer wrote:

...

Hi again,

Could somebody please re-test on a recent driver build to see wether the problem still persists?

Still appears to be doing it.

...

Furthermore should I open a bug-report about this issue?

Please. Alex

...

Thanks again, Clemens

2009/6/8, Matthias Hopf :

...
On Jun 08, 09 07:49:24 -0400, Clemens Eisserer wrote:

...
The first (top) line was rendered with pixman (NoAccel), the second line with exa on my HD3850 / Ubuntu 9.04 live cd.

This indeed looks very wrong. Alex, any ideas?

Matthias

-- Matthias Hopf __ __ __ Maxfeldstr. 5 / 90409 Nuernberg (_ | | (_ |__ mat@mshopf.de Phone +49-911-74053-715 __) |_| __) |__ R & D www.mshopf.de

-- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org

-- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org

Yang Zhao

17:28

New subject: Please test: Blur on y-axis also when only x-axis is scaled billiear

2009/6/10 Clemens Eisserer :

...

Could somebody please re-test on a recent driver build to see wether the problem still persists? Furthermore should I open a bug-report about this issue?

Seems to be working as expected on RV770. -- Yang Zhao http://yangman.ca

Clemens Eisserer

17:40

New subject: Please test: Blur on y-axis also when only x-axis is scaled billiear

Hi Yang,

...

Seems to be working as expected on RV770. The screenshot seems broken. The line is smeared over 2 pixel rows in y direction, whereas it should be only one.

Thanks for testing, Clemens -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org

Yang Zhao

18:36

New subject: Please test: Blur on y-axis also when only x-axis is scaled billiear

2009/6/10 Clemens Eisserer :

...

...
Seems to be working as expected on RV770. The screenshot seems broken. The line is smeared over 2 pixel rows in y direction, whereas it should be only one.

Ah, it's only supposed to be a 1px wide line. I'll see if I have some time to look at the code driving this. -- Yang Zhao http://yangman.ca -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org

Clemens Eisserer

18:46

New subject: Please test: Blur on y-axis also when only x-axis is scaled billiear

Hi Yang,

...

Ah, it's only supposed to be a 1px wide line. I'll see if I have some time to look at the code driving this.

That would be really cool :) It causes artifacts like: https://bugs.freedesktop.org/attachment.cgi?id=19758 (should be) https://bugs.freedesktop.org/attachment.cgi?id=19759 (is) Interestingly <= i945 suffers from exactly the same problem, but >= i965 doesn't have this problem. The corresponding intel bug has been reported at: https://bugs.freedesktop.org/show_bug.cgi?id=16917 (and entered the typical open-but-nobody-cares-state) Thanks, Clemens -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org

Yang Zhao

28 Jun 28 Jun

22:39

New subject: Please test: Blur on y-axis also when only x-axis is scaled billiear

2009/6/8 Clemens Eisserer :

...

I've just found something which looks like a bug in the Radeon/RadeonHD EXA code. When scaling a picture in x-axis and billinear filtering is requested, the y-axis is blurred too.

This should be fixed by 645a0a0a that was committed today. Cheers, -- Yang Zhao http://yangman.ca -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org

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Alex Deucher
Clemens Eisserer
Matthias Hopf
Yang Zhao