Bug 62647 - Wrong rendering of Dota 2 on Wine (apitrace attached) - Intel IVB HD4000
Summary: Wrong rendering of Dota 2 on Wine (apitrace attached) - Intel IVB HD4000
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: git
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Ian Romanick
QA Contact:
: 67877 (view as bug list)
Depends on:
Reported: 2013-03-22 17:08 UTC by Vedran Rodic
Modified: 2013-09-09 20:31 UTC (History)
9 users (show)

See Also:
i915 platform:
i915 features:

edited trace (178.59 KB, application/x-bzip2)
2013-06-02 14:08 UTC, Alexander Monakov

Description Vedran Rodic 2013-03-22 17:08:10 UTC
Dota 2 under Wine 1.5.26 seems to run sufficiently fast and without crashes, but there is a problem with certain models in game missing. I tested with latest mesa git, Linux 3.9 rc3 (3.5 from ubuntu has the same problem)

Below is a URL to an apitrace 3.0 file (retraceable by glretrace on Intel and nVidia, and Intel/Windows) that clearly shows the problem. Wait until in game, 5 game characters should be visible, but only one is, and later there should be a forest on the left and some towers toward the middle.  

The problem is not present on Linux with nVidia proprietary 313 drivers (9800GT), and that can be seen with the same trace file. 

URL: http://www.centarnekretnina.net/tmp/dota2-b.trace.bz2
Comment 1 Vedran Rodic 2013-03-22 17:35:03 UTC
I forgot to mention that the problem is visible on IvyBridge, I don't have another Intel GPU.
Comment 2 Vedran Rodic 2013-03-23 10:46:11 UTC
Screenshots of the same frame to compare (the small corruption on the nVidia one might me apitrace or nVidia driver bug, the problem was not visible when just running glretrace).

Comment 3 Vedran Rodic 2013-03-27 09:09:00 UTC
swrast (mesa version 9.0.3) seems to render it just fine, but very slow of course. 

mesa version 9.0.3 from ubuntu 13.04 RC has even more issues with its DRI driver
Comment 4 Vedran Rodic 2013-03-29 13:45:32 UTC
Correction, swrast in previous comment was actually llvmpipe (9.0.3).

I've tested with current Mesa 9.2 git with llvmpipe and that driver is still rendering fine.  The classic swrast was just too slow.
Comment 5 Ben 2013-04-01 00:41:45 UTC
If it  helps track down the issue - the missing character models appear when rendered above other models.

e.g. http://i.imgur.com/HVq2SNP.jpg

The top of the model renders because it is above the grey creature model. The same thing occurs on stairs and the stones that are just below the character in the screenshot.
Comment 6 Vedran Rodic 2013-04-03 18:24:28 UTC
I can confirm Bens observation

I made a second trace where I disabled most of other Dota2 world rendering to try to make the frames smaller in number of calls and easier to isolate:


This trace runs without glitches on nVidia driver as before and on llvmpipe

For the next step in the investigation I'll try to compare piglit runs between llvmpipe and Dota 2 and try to look into tests that fail on Intel/DRI and pass on llvmpipe. I'll try looking at depth buffer, vertex shader and scissor related tests since I got some hints that it might be related to those specific parts of the rendering pipeline.

autoexec.cfg there is a configuration file I ran to autostart dota on a map. It contains commands to temporarily disable rendering of some dota graphics to make the trace file lighter and the problem easier to isolate

You will  have to type 'jointeam good' in dota console to trigger hero selection after the map is loaded if you want to reproduce my test. 

I'm not sure I'll personally have the knowledge to actually fix this, but I'll likely spend some of my free time off work in next few weeks to figure the nature of this bug better.
Comment 7 Vedran Rodic 2013-04-06 14:27:52 UTC
We also tested on Sandy Bridge, mesa 9.1.1, and exact same bug was visible.
Comment 8 sergey 2013-04-27 02:19:33 UTC
reproduced on intel hd3000 in core i3 2350m

       description: VGA compatible controller
       product: 2nd Generation Core Processor Family Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 09
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:43 memory:d0000000-d03fffff memory:c0000000-cfffffff ioport:3000(size=64)
Comment 9 Vedran Rodic 2013-05-03 10:52:52 UTC
Wine has two offscreen rendering modes, configured by OffscreenRenderingMode registry key (documented here: http://wiki.winehq.org/UsefulRegistryKeys)

The default mode is "FBO" mode. In non-default mode, the backbuffer mode, the characters and surrounding foliage trees can be seen, but with artifacts that are probably due to Wine bugs/limitations. However, there are other glitches maybe unrelated to wine.

I've uploaded a set of images with descriptions here http://imgur.com/a/9TgxO, 

I will comment more when I have a chance to test under nVidia to see which artifacts are due to wine and which are due to Intel bugs. 

The captured trace is here: http://mjesec.ffzg.hr/~vrodic/dota/dota2-backbuffer-mode.trace.bz2

But can't be replayed correctly because for some reason glretrace is making the screen flicker so I can see mostly black (no such isuess when actually running with Wine).
Comment 10 Alexandre Derumier 2013-05-06 16:42:59 UTC

I confirm this bug too on my hd4000/ corei7, mesa 9.1.2.

The main character seem to be renderer 1 layer under the map decorations.

The other playing characters are rendered fine.
Comment 11 delacruz 2013-05-13 08:19:39 UTC
I also confirm the same behaviour in my system with an Intel Ivy Bridge (i7) and a HD4000.

My current configuration is as follows:
mesa 9.2-git (xorg-edgers PPA)
  GL_VERSION:  3.0 Mesa 9.2.0
  GL_VENDOR:   Intel Open Source Technology Center
  GL_RENDERER: Mesa DRI Intel(R) Ivybridge Mobile
Comment 12 Alexandre Derumier 2013-05-16 04:43:09 UTC
Just have tried with today mesa git (16 May 2013), doesn't work too.

I have notice that the character can become full visible, with using a spell/object to be invisible.
Comment 13 Alexandre Derumier 2013-05-16 12:21:14 UTC
I have done tests with the new gallium ilo driver, with HD4000, I have the same display bug.

OpenGL vendor string: LunarG, Inc.
OpenGL renderer string: Gallium 0.4 on Intel(R) Ivybridge Mobile
OpenGL version string: 2.1 Mesa 9.2.0 (git-435aea6)
OpenGL shading language version string: 1.30

So,I'm not sure the problem is in the intel driver.

Does it work with radeon or nouveau gallium?
Comment 14 Vedran Rodic 2013-05-24 09:50:58 UTC
Other open source drivers without issues are: nouveau (Tested on 9800GT) and the OSS driver for Radeon 6850
Comment 15 Alexandre Derumier 2013-05-30 06:29:00 UTC

Today git (30 may 2013), break fully the display with i965 driver. I have now a white screen, with crap everywhere.

So something have change 29may or 30may in git, I see a lot of intel patches.

Git form 28 may was working like before with the display bug.

Note the ilo driver don't have this new problem.
Comment 16 Alexandre Derumier 2013-05-30 06:53:17 UTC
forgot my last message, it's was a temp bug,fixed by

Revert "i965: fix problem with constant out of bounds access (v2)"

So, no news for now, the dota display bug is like before.
Comment 17 Vedran Rodic 2013-05-30 12:27:14 UTC
I've managed to drastically reduce the size of the trace where some problem can be seen:


When we dump the state of the last call in trace on nVidia, on GL_COLOR_ATTACHMENT1 we can see some leaf outlines on the bottom left of the screen.

Both Intel/Mesa and gallium/swrast don't show anything here, so it might be a different problem, but it definitely seems to be a problem.
Comment 18 Vedran Rodic 2013-05-30 15:33:45 UTC
related to comment 17, for some reason wine/dota generates a slightly different trace when run under mesa compared to when run under nvidia GL driver

the minimal trace in comment 17 is from nvidia driver, and this one is with mesa:

the mesa one is different that it creates the expected output with both gallium swrast and nvidia binary driver, where the trace from comment 17 only created good output on nvidia binary driver
Comment 19 Vedran Rodic 2013-06-02 09:53:26 UTC
I did even more trimming and dota 2 configuration tweaking to come up with a even smaller trace file. 


When we dump the state of the last call in trace on nVidia or llvm softpipe, on GL_COLOR_ATTACHMENT1 we can see some leaf outlines on the bottom left of the screen (open the full size image in qapitrace).
Comment 20 Vedran Rodic 2013-06-02 11:14:46 UTC
More details about the last trace: 

- If I disable the fragment shader at call 38758, something can be seen on intel DRI driver on GL_COLOR_ATTACHMENT (obviously incorrect)
- I missed it earlier, but GL_STENCIL_ATTACHMENT also contains the leaf outlines on softpipe driver
Comment 21 Alexander Monakov 2013-06-02 14:08:51 UTC
Created attachment 80153 [details]
edited trace

One more trace demonstrating that commenting out gl_Fragdata[1,2] writes in the last fragment shader produces "less wrong" results in color attachment 1 [details] [review].  Can somebody familiar with INTEL_DEBUG=wm assembly eyeball the generated code for output target 1 for this and the previous trace?
Comment 22 Eric Anholt 2013-06-06 16:18:35 UTC
The debug=wm output looks reasonable to me.  Only funky thing I see at the moment is the gl_FogFragCoord output from the VS not getting dead code eliminated, but that should be fine (looks like output/input mapping works correctly when testing that standalone).

Unfortunately, replay on softpipe is crapping out for me (incomplete framebuffers).
Comment 23 Alexandre Derumier 2013-07-01 06:12:23 UTC
Hi, I would like to help, 

can somebody tell me how to do traces and debug it? (Sorry I'm noob).

Also I notice that ilo and i965g have the same display bug, do they share something in common ?
Comment 24 Chris Forbes 2013-07-01 11:51:36 UTC
I've just sent a (fairly dodgy) patch to the mesa list which fixes this.
Comment 25 Vedran Rodic 2013-07-01 12:30:35 UTC
Confirmed fixed. Thanks Chris!
Comment 26 Alexandre Derumier 2013-07-01 12:47:27 UTC
Works fine here too ! Thanks Chris ! Thanks Vedran !
Comment 27 Vedran Rodic 2013-07-07 14:04:44 UTC
Fix has been committed by Chris Forbes to mesa master. 

The text below is for people subscribed to this bug that are not necessarily developers.

It should shortly be available in your respective distribution daily builds if your distribution provides them. Ubuntu has something similar in form of Xorg edgers ppa, so the updated build should be possible. 

Using your own build in the meantime should be possible by compiling a 32bit version of mesa master and setting LIBGL_DRIVERS_PATH and LD_LIBRARY_PATH env variables to your src/mesa/lib directory before running wine Dota 2.

My Ivy Bridge mobile i5 runs Dota just fine with some effects disabled on a full screeen 1920x1080 monitor.
Comment 28 delacruz 2013-07-10 08:09:31 UTC
Hi guys,

I have just updated my Mesa drivers through edgers ppa for Ubuntu and it works like a charm!

My Ivy Bridge i7 in 1920x1080 renders Dota2 with a reasonable performance.

I want to thank everybody for this patch.
Comment 29 Kenneth Graunke 2013-07-11 18:25:30 UTC
Also, the native Linux client is now available on Steam (admittedly in beta testing), so you may want to try that.
Comment 30 Vedran Rodic 2013-07-11 18:51:01 UTC
Some interesting bugs on Mesa/Intel, and afaik on all Mesa using
machines clients: https://github.com/ValveSoftware/Dota-2/issues/38

On Thu, Jul 11, 2013 at 8:25 PM,  <bugzilla-daemon@freedesktop.org> wrote:
> Comment # 29 on bug 62647 from Kenneth Graunke
> Also, the native Linux client is now available on Steam (admittedly in beta
> testing), so you may want to try that.
> ________________________________
> You are receiving this mail because:
> You are on the CC list for the bug.
> You reported the bug.
Comment 31 Chris Forbes 2013-07-11 19:22:42 UTC
Can we have a new bug for issues in the native client?
Comment 32 Vedran Rodic 2013-08-17 06:06:41 UTC
*** Bug 67877 has been marked as a duplicate of this bug. ***
Comment 33 Auke Kok 2013-09-09 20:31:30 UTC
(In reply to comment #31)
> Can we have a new bug for issues in the native client?

This is now confirmed fixed with mesa-9.1.6.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.