Bug 106673

Summary:	[bisected] Steam is unusable since commit 5c33e8c7
Product:	Mesa	Reporter:	Alexandre Demers <alexandre.f.demers>
Component:	Mesa core	Assignee:	mesa-dev
Status:	RESOLVED FIXED	QA Contact:	mesa-dev
Severity:	normal
Priority:	medium
Version:	git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Alexandre Demers 2018-05-27 14:55:08 UTC

Steam crashes since commit 5c33e8c7729edd5e16020ebb8703be96523e04f2 "st/nir: use NIR for asm programs". The application launches but quickly crashes after drawing only the edges of the window.

However, the bug is partially fixed by commit d89f58a6b8436b59dcf3b896c0ccddabed3f78fd "mesa/st: handle vert_attrib_mask in nir case too", after which it will not crash anymore but will display the different windows completely in black.

Using AMD Radeon HD 7900 Series (TAHITI, DRM 3.23.0, 4.16.8-1-ARCH, LLVM 6
.0.0) (0x6798)

Comment 1 Timothy Arceri 2018-05-28 04:42:51 UTC

I assume you mean when using the NIR backend? Anyway I've pushed the revert of this change as it was breaking other drivers also.

Should be fixed by:

commit 3b6dfcf7ae0abd65c0db8a71e55977a0e20ea94f
Author: Eric Anholt <eric@anholt.net>
Date:   Thu May 17 15:53:40 2018 +0100

    Revert "st/nir: use NIR for asm programs"
    
    This reverts commit 5c33e8c7729edd5e16020ebb8703be96523e04f2.  It broke
    fixed function vertex programs on vc4 and v3d, and apparently caused
    trouble for radeonsi's NIR paths as well.
    
    Acked-by: Timothy Arceri <tarceri@itsqueeze.com>
    https://bugs.freedesktop.org/show_bug.cgi?id=106673

Comment 2 Alexandre Demers 2018-05-29 16:28:35 UTC

(In reply to Timothy Arceri from comment #1)
> I assume you mean when using the NIR backend? Anyway I've pushed the revert
> of this change as it was breaking other drivers also.

Obviously. I'll test it later today. Thank you.

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