Bug 90510

Summary:	[radeon][tahiti xt] IA_MULTI_VGT_PARAM programming seems broken
Product:	Mesa	Reporter:	Sylvain BERTRAND <sylvain.bertrand>
Component:	Drivers/Gallium/radeonsi	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED MOVED	QA Contact:	Default DRI bug account <dri-devel>
Severity:	critical
Priority:	medium
Version:	git
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Sylvain BERTRAND 2015-05-18 13:26:24 UTC

This is a follow-up of the bug #90370.
source engine games produce tons of graphical glitches, unless
R600_DEBUG='switch_on_eop' is defined.
Tested with dota2/portal2. For portal2, the amount of glitches depends on
the level you choose.

Comment 1 Sylvain BERTRAND 2015-05-18 13:28:30 UTC

There are still some glitches, but they are rare.

Comment 2 Arek Ruśniak 2015-05-18 17:09:12 UTC

Hi, I follow 
https://bugs.freedesktop.org/show_bug.cgi?id=90370
and 
https://bugs.freedesktop.org/show_bug.cgi?id=90484

R600_DEBUG='switch_on_eop' doesn't work for VERDE. Some glitches appear at screen as before, maybe even worse. I've tested L4D2 only.

Comment 3 Sylvain BERTRAND 2015-05-24 18:30:03 UTC

all git from today, linux agd5f drm-fixes-4.1, llvm, mesa, xserver, drm,
xorg evdev, xorg ati.
dota2/portal2 still unplayable without R600_DEBUG='switch_on_eop' on
tahiti xt, that because of the graphic glitches.

Comment 4 Sylvain BERTRAND 2015-05-25 14:42:54 UTC

Thx to the mailing list, I caught the bug related to my issue:
#88978
verbatim llvm won't work properly for SI hardware at all till those
nasty bugs are solved (still some glitches left).

Comment 5 Sylvain BERTRAND 2015-05-25 14:46:52 UTC

Based on work done from the mailing list, it seems the BO move may be related
to some of the remaining glitches.

Comment 6 Sylvain BERTRAND 2015-06-12 16:37:06 UTC

yesterday/today git for drm/llvm/mesa/xserver/xf86-video-ati, and today linux
drm-next-4.2:
still broken for tahiti xt

Comment 7 Sylvain BERTRAND 2015-06-28 18:01:32 UTC

I close this bug to open more specific ones since it's still broken.

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