Bug 48747

Summary:	regression [bisected]: display corruption in google earth/glxgears using git r600g on RS780M
Product:	Mesa	Reporter:	Jos van Wolput <wolput>
Component:	Drivers/Gallium/r600	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:
Severity:	major
Priority:	medium
Version:	git
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	corrupted glxgears Xorg.log possible fix

Description Jos van Wolput 2012-04-15 19:02:06 UTC

Created attachment 60043 [details]
corrupted glxgears

When using the r600g driver from git mesa (instead of the ati-driver) I get corrupted 3D pictures as shown by the attachment.
No such issue using r600g from mesa-8.0.2.
All 3D demos are affected as well as google earth and GLC_player 3D apps.

Result of git bisect: 
mesa-c0c979eebc076b95cc8d18a013ce2968fe6311ad is the first bad commit,
committer: Jerome Glisse <jglisse@redhat.com>
date: 2012-02-06 23:36:37 (GMT)
title: 'r600g: add support for common surface allocator for tiling v13'

My hardware and system:
ATI Radeon HD3200 RS780M/RS780MN
Debian Sid with the following packages updated:
Linux Kernel~3.3.0-1.dmz.1-liquorix-amd64
Latest git version of libdrm, libX11, libxcb, libXi, mesa and xserver.

Comment 1 Michel Dänzer 2012-04-16 02:40:57 UTC

Please attach the Xorg.0.log file.

Comment 2 Jos van Wolput 2012-04-16 03:23:56 UTC

Created attachment 60053 [details]
Xorg.log

Comment 3 Alex Deucher 2012-04-16 07:11:04 UTC

Created attachment 60065 [details] [review]
possible fix

Does this kernel patch help?

Comment 4 Jerome Glisse 2012-04-16 07:27:12 UTC

Does it works with ati driver from git ? gallium st/xorg is not really supported

Comment 5 Jos van Wolput 2012-04-16 19:41:32 UTC

(In reply to comment #4)
> Does it works with ati driver from git ? gallium st/xorg is not really
> supported

Yes, it works without problems with xf86-video-ati driver from git.

Comment 6 Jos van Wolput 2012-04-16 21:36:20 UTC

(In reply to comment #3)

> Does this kernel patch help?

I am sorry I can't patch my kernel since I use a precompiled one.

Comment 7 Michel Dänzer 2012-04-17 00:16:39 UTC

(In reply to comment #6)
> I am sorry I can't patch my kernel since I use a precompiled one.

It's not hard to build your own Debian kernel with a patch. It'll be a skill very useful to you for testing bug fixes.


(In reply to comment #5)
> Yes, it works without problems with xf86-video-ati driver from git.

Even with Option "ColorTiling2D"?

Comment 8 Jos van Wolput 2012-04-17 04:42:21 UTC

(In reply to comment #7)

> Even with Option "ColorTiling2D"?

I am not quite sure if ColorTiling2D is really enabled since I am running
kernel 3.3, I understand you need kernel 3.4 to enable 2D tiling properly.

Anyway this is what Xorg.0.log mentions about tiling:
[  2648.738] (**) RADEON(0): Option "ColorTiling2D" "on"
[  2648.739] (II) RADEON(0): KMS Color Tiling: enabled

Comment 9 Michel Dänzer 2012-05-16 09:59:25 UTC

Commit: 11f056a3f0b87e86267efa8b5ac9d36a343c9dc1
Author: Michel Dänzer <michel.daenzer@amd.com>
Date:   Wed May 16 17:45:17 2012 +0200

r600g: Set tiling information for BOs being shared.

Comment 10 Jos van Wolput 2012-05-16 21:48:31 UTC

(In reply to comment #9)
> Commit: 11f056a3f0b87e86267efa8b5ac9d36a343c9dc1
> Author: Michel Dänzer <michel.daenzer@amd.com>
> Date:   Wed May 16 17:45:17 2012 +0200
> 
> r600g: Set tiling information for BOs being shared.

Indeed no more display corruption, thanks.

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