[Bug 79074] New: PRIME with compositing rednering hangs and other rendering issues

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79074

          Priority: medium
            Bug ID: 79074
          Assignee: dri-devel at lists.freedesktop.org
           Summary: PRIME with compositing rednering hangs and other
                    rendering issues
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: haagch.christoph at googlemail.com
          Hardware: Other
            Status: NEW
           Version: git
         Component: Drivers/Gallium/radeonsi
           Product: Mesa

00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Wimbledon XT [Radeon HD 7970M] (rev ff)

xorg server 1.15.1 stable,
mesa, glamor, xf86-video-intel and xf86-video-ati from very recent git.

I am "testing" with mass effect 1 in a 1920x1080 wine virtual desktop.

The trouble is mainly with minimizing and restoring windows.


OpenGL/GLX Compositing (kwin): I have still this issue
https://bugs.freedesktop.org/show_bug.cgi?id=69101
So on the first start of the game the graphical output is (almost?) always
stuck at the splash screen and I have to press the ctrl+alt+f12 hotkey to
disable and re-enable compositing. When minimizing and restoring the window it
has about 2/3 chance or so that it will not render and I have to minimize or
disable/re-enable etc.

Xrender Compositing with both compton --backend xrender and kwin:
The above problem with not rendering does not happen with xrender compositing.
Instead: When minimizing the wine window, the game will render over everything
on all workspaces while minimized.


I can provoke a graphical output hang when:
1. Use kwin with opengl compositing.
2. Minimize and restore until it hangs.
3. While it hangs, switch to compton --xrender.
Then the graphical output and does *not* recover with disabling/reenabling
compositing or minimizing/restoring multiple times, I have to kill it...

The game itself doesn't hang, I can hear the results of input etc. It's just
the graphical output.

I have no idea how to try to debug this, but I will see if it is possible for
me to find out more about why this happens.

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