Bug 66974

Summary:	[radeonsi] rendering is broken in L4D2
Product:	Mesa	Reporter:	Laurent carlier <lordheavym>
Component:	Drivers/Gallium/radeonsi	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium	CC:	grantipak
Version:	git
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	broken font rendering in L4D2 Broken in-game rendering Broken in-game rendering Dota 2 grafical glitch in HL2 ep2 grafical glitch in Portal

Description Laurent carlier 2013-07-16 18:25:45 UTC

Created attachment 82494 [details]
broken font rendering in L4D2

* radeon HD7870
* mesa-git:
  OpenGL renderer string: Gallium 0.4 on AMD PITCAIRN
  OpenGL version string: 2.1 Mesa 9.2.0-devel (git-121ea0b)
* llvm-3.4svn rev186383

Font rendering is broken (similar bug in counter-strike: source), and game rendering also.

An apitrace (from git) file is available here:
http://pkgbuild.com/~lcarlier/traces/L4D2_trace-130716.tar.xz

Comment 1 Laurent carlier 2013-07-16 18:28:36 UTC

Created attachment 82495 [details]
Broken in-game rendering

Comment 2 Michel Dänzer 2013-07-19 13:54:10 UTC

I just bisected similar issues in Team Fortress 2 (which also uses the Source engine) to the commit below. Looks like we're doing something wrong for clip vertex support.

commit e3befbca5ed9f22effcdc91c5886c86b644bc190
Author: Michel Dänzer <michel.daenzer@amd.com>
Date:   Wed May 15 18:09:50 2013 +0200

    radeonsi: Handle TGSI_SEMANTIC_CLIPVERTEX

    17 more little piglits.

Comment 3 Vladimir Usikov 2013-07-19 17:10:51 UTC

Not only in L4D2, T have same bug in Dota 2 and HL2 (Ep1, EP2, Lost Coast).

Radeon HD 7950; linux 3.10; mesa 9.2git; llvm 3.4svn

Comment 4 Vladimir Usikov 2013-07-19 17:12:31 UTC

Created attachment 82701 [details]
Broken in-game rendering Dota 2

Comment 5 Michel Dänzer 2013-08-15 17:56:01 UTC

commit b00269aa5887b88d2e037d6bfa374779902f8743
Author: Michel Dänzer <michel.daenzer@amd.com>
Date:   Wed Aug 7 18:14:16 2013 +0200

    radeonsi: Don't leave gaps between position exports from vertex shader
    
    If the vertex shader exports clip distances but not point size, use
    position exports 1/2 instead of 2/3 for the clip distances. Fixes
    geometry corruption in that case.

Comment 6 Vladimir Usikov 2013-08-17 16:55:57 UTC

Created attachment 84177 [details]
grafical glitch in HL2 ep2

This type  of rendering errors is gone, but still not clean in HL2 ep2, HL2 Lost Coast, Portal, left 4 Death 2. Dota 2 look like a normal.

Comment 7 Vladimir Usikov 2013-08-17 16:57:12 UTC

Created attachment 84178 [details]
grafical glitch in Portal

Do i mast create new bug report?

Comment 8 Laurent carlier 2013-08-17 17:01:53 UTC

(In reply to comment #7)
> Created attachment 84178 [details]
> grafical glitch in Portal
> 
> Do i mast create new bug report?

https://bugs.freedesktop.org/show_bug.cgi?id=68162

Comment 9 Vladimir Usikov 2013-08-17 17:07:11 UTC

I apologize for my carelessness.

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