From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org Subject: [Bug 64323] New: Severe misrendering in Left 4 Dead 2 Date: Tue, 07 May 2013 15:52:49 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0043044541==" Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nouveau-bounces+gcfxn-nouveau=m.gmane.org-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Errors-To: nouveau-bounces+gcfxn-nouveau=m.gmane.org-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org List-Id: nouveau.vger.kernel.org --===============0043044541== Content-Type: multipart/alternative; boundary="1367941969.b2cb8D0.9901"; charset="us-ascii" --1367941969.b2cb8D0.9901 Date: Tue, 7 May 2013 15:52:49 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=64323 Priority: medium Bug ID: 64323 Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Summary: Severe misrendering in Left 4 Dead 2 Severity: normal Classification: Unclassified OS: Linux (All) Reporter: bryancain3+fdo-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org Hardware: x86 (IA32) Status: NEW Version: git Component: Drivers/DRI/nouveau Product: Mesa This should be filed under component "Drivers/Gallium/nouveau", but that doesn't exist for some reason. In the nv50 driver, after loading a map in the Left 4 Dead 2 beta, there are major rendering artifacts that make the game unplayable. Portal shows a similar problem. Noticing that stable versions before Mesa 9.1 don't have this problem, I bisected the regression to this commit: http://cgit.freedesktop.org/mesa/mesa/commit/?h=48a45ec24ae74c0 commit 48a45ec24ae74c00d1487552e94d9f824a428f58 Author: Christoph Bumiller Date: Tue Jan 8 16:13:11 2013 +0100 nouveau: improve buffer transfers Save double memcpy on uploads to VRAM in most cases. Properly handle FLUSH_EXPLICIT. Reallocate on DISCARD_WHOLE_RESOURCE to avoid sync. I don't understand the changes made by this commit well enough to fix the regression myself. I have an apitrace that can be used to reproduce the issue, and will comment on this bug with a link to it as soon as I find a good way to share large (~512 MB) files online. -- You are receiving this mail because: You are the assignee for the bug. --1367941969.b2cb8D0.9901 Date: Tue, 7 May 2013 15:52:49 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"
Priority medium
Bug ID 64323
Assignee nouveau@lists.freedesktop.org
Summary Severe misrendering in Left 4 Dead 2
Severity normal
Classification Unclassified
OS Linux (All)
Reporter bryancain3+fdo@gmail.com
Hardware x86 (IA32)
Status NEW
Version git
Component Drivers/DRI/nouveau
Product Mesa 

This should be filed under component "Drivers/Gallium/nouveau", but that
doesn't exist for some reason.

In the nv50 driver, after loading a map in the Left 4 Dead 2 beta,  there are
major rendering artifacts that make the game unplayable.  Portal shows a
similar problem.

Noticing that stable versions before Mesa 9.1 don't have this problem, I
bisected the regression to this commit:

http://cgit.freedesktop.org/mesa/mesa/commit/?h=48a45ec24ae74c0

commit 48a45ec24ae74c00d1487552e94d9f824a428f58
Author: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Date:   Tue Jan 8 16:13:11 2013 +0100

    nouveau: improve buffer transfers

    Save double memcpy on uploads to VRAM in most cases.
    Properly handle FLUSH_EXPLICIT.
    Reallocate on DISCARD_WHOLE_RESOURCE to avoid sync.

I don't understand the changes made by this commit well enough to fix the
regression myself.  I have an apitrace that can be used to reproduce the issue,
and will comment on this bug with a link to it as soon as I find a good way to
share large (~512 MB) files online.

You are receiving this mail because:
  • You are the assignee for the bug.
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