Bug 28655

Summary:	[r300g] Regression caused by commit 9b2ebcaf4b94bfc8756f6b216e0e452013616f2c
Product:	Mesa	Reporter:	Rubén Fernández <rubenf3000>
Component:	Drivers/DRI/r300	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium
Version:	git
Hardware:	x86 (IA32)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	Screenshot showing an incorrectly rendered scene the same scene, correctly rendered before the commit WAIT_DMA_GUI_IDLE patch the same star, with patch applied

Description Rubén Fernández 2010-06-21 14:48:30 UTC

After commit 9b2ebcaf4b94bfc8756f6b216e0e452013616f2c, "r300g: fix random pixels appearing / incomplete rendering", the game "Call of Cthulhu: Dark Corners of the Earth" (played using wine - with GLSL disabled) stops rendering textures correctly.

Graphics Card: ATI Technologies Inc RV505 [Radeon X1550 64-bit]
CPU: Intel Core Duo 1.8 Ghz, 2.5 GB RAM
Linux kernel 2.6.34, libdrm 2.4.21

Comment 1 Rubén Fernández 2010-06-21 14:56:35 UTC

Created attachment 36407 [details]
Screenshot showing an incorrectly rendered scene

Comment 2 Rubén Fernández 2010-06-21 14:57:42 UTC

Created attachment 36408 [details]
the same scene, correctly rendered before the commit

Comment 3 Marek Olšák 2010-06-21 18:33:11 UTC

Created attachment 36412 [details] [review]
WAIT_DMA_GUI_IDLE patch

Does the attached patch help?

Comment 4 Rubén Fernández 2010-06-22 07:10:54 UTC

(In reply to comment #3)
> Created an attachment (id=36412) [details]
> WAIT_DMA_GUI_IDLE patch
> 
> Does the attached patch help?

It doesn't improve anything, but it changed something: now the five-pointed star looks like a square; the new screenshot called "same star, with patch" shows the exact same white star from the other screenshots, as it looks with the patch applied

Comment 5 Rubén Fernández 2010-06-22 07:12:11 UTC

Created attachment 36418 [details]
the same star, with patch applied

Comment 6 Rubén Fernández 2010-06-22 07:54:14 UTC

> > Does the attached patch help?
> 
> It doesn't improve anything, but it changed something: now the five-pointed
> star looks like a square; the new screenshot called "same star, with patch"
> shows the exact same white star from the other screenshots, as it looks with
> the patch applied

Actually, I realised I loaded the wrong saved game; that square wasn't the same star from the previous screenshots (sorry for the confusion).

In sum, the patch changed nothing at all. As before, all textures in the game look tiled, like a jigsaw puzzle (problem with texture coordinates, perhaps? putting pieces of the texture in the wrong places?)

Comment 7 Alex Deucher 2010-06-22 08:14:04 UTC

Does disabling colortiling help?
Option "ColorTiling" "False"
in the device section of your xorg.conf

Comment 8 Rubén Fernández 2010-06-22 09:00:52 UTC

(In reply to comment #7)
> Does disabling colortiling help?
> Option "ColorTiling" "False"
> in the device section of your xorg.conf

No change, I'm afraid

Comment 9 Marek Olšák 2010-06-22 16:44:01 UTC

I've committed a workaround, could you try current mesa git?

Comment 10 Rubén Fernández 2010-06-22 19:19:12 UTC

(In reply to comment #9)
> I've committed a workaround, could you try current mesa git?

It works perfectly again now!

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.