Bug 110861

Summary:	The Witcher 3: blocky shadow artifacts on distant objects
Product:	Mesa	Reporter:	tempel.julian
Component:	Drivers/Vulkan/radeon	Assignee:	mesa-dev
Status:	RESOLVED FIXED	QA Contact:	mesa-dev
Severity:	normal
Priority:	medium
Version:	git
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description tempel.julian 2019-06-08 18:05:31 UTC

There are blocky shadow artifacts on distant objects:
https://abload.de/img/tw3lyk3t.png

I think this is a regression in either radv or llvm, as I can't recall seeing these artifacts the last time I tested with radv.
Funny: amdvlk had a similar (or even the very same?) issue and it got fixed with its latest update.

mesa-git  19.2.0_devel.111569.22025595f3f
llvm-libs-git  9.0.0_r318186.669775f9db7

Comment 1 tele42k3 2019-06-09 00:51:39 UTC

Hi, this looks like #110811 (https://bugs.freedesktop.org/show_bug.cgi?id=110811), please retest with mesa built against LLVM r362749 or newer.

Comment 2 tempel.julian 2019-06-09 10:40:20 UTC

Indeed, thanks for letting me know. Performance btw. is still almost 10% better than with amdvlk.

I wonder if this also fixes this bug, should check it out again:
https://bugs.freedesktop.org/show_bug.cgi?id=110662

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