| Bug ID | 97852 |
|---|---|
| Summary | Unreal Engine corrupted preview viewport |
| Product | Mesa |
| Version | git |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | Drivers/Gallium/radeonsi |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | mw@graph-ix.net |
| QA Contact | dri-devel@lists.freedesktop.org |
Created attachment 126603 [details]
Viewport corruption
Unreal Engine 4.13.1 editor shows corrupted preview viewports when at least=
one
of the following post-processing effects is active in a viewport:
* Motion Blur
* Tonemapper
A screenshot of a viewport segment is attached.
When both effects are turned off, viewports appear to render correctly.
Graphics card: AMD TONGA chipset (Radeo R9 380)
Mesa version: 12.1~git1600917222200.073129c~x~padoka0 on Ubuntu 16.04 with
Padoka PPA
glxinfo:
OpenGL core profile version string: 4.3 (Core Profile) Mesa 12.1.0-devel -
padoka PPA
OpenGL version string: 3.0 Mesa 12.1.0-devel - padoka PPA
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 12.1.0-devel - padoka
PPA
Hi Markus, can you provide an apitrace that can reproduce the = corruption?
(In reply to Nicolai H=C3=A4hnle from comment #1) > Hi Markus, can you provide an apitrace that can = reproduce the corruption? Hi Nicolai, I'm not familiar with debugging Mesa. Could you please provide a link to documentation on how I can obtain the information you need?
Use this tool: https://github.com/apitrace/apitrace to record a session that shows the problem. Once installed, you basically just run `apitrace trace <program under trace>`. The documentation linked to in the readme is = generally pretty good.
(In reply to Nicolai H=C3=A4hnle from comment #3) > Use this tool: https://github.com/apitrace/apitrace to record a sessio= n that > shows the problem. Once installed, you basically just run `apitrace tr= ace > <program under trace>`. The documentation linked to in the readm= e is > generally pretty good. Hi Nicolai, an API trace is now attached. The trace was created with Mesa version 13.1~git161022230600.7b7eb71~x~padoka0 where the issue is still present. The major part of the trace probably consists of the editor starting up, so= the issue itself should only be captured in the seconds prior to the editor starting to shut down.
| What | Removed | Added |
|---|---|---|
| QA Contact | dri-devel@lists.freedesktop.org | intel-3d-bugs@lists.freedesktop.org |
| Assignee | dri-devel@lists.freedesktop.org | mesa-dev@lists.freedesktop.org |
| Component | Drivers/Gallium/radeonsi | glsl-compiler |
A shader program fails to link, see below. This may be an Unre= al Engine (editor) bug, reassigning to the GLSL compiler for now. 839119 @4 glLinkProgram(program =3D 3018) 839119: warning: link failed 839119: warning: error: vertex shader output `out_TEXCOORD0' specifies noperspective interpolation qualifier, but fragment shader input specifies = no interpolation qualifier Mesa: User error: GL_INVALID_OPERATION in glUseProgram(program 3018 not lin= ked) [more errors]