[Nouveau] [Bug 94374] transparent window with DRI_PRIME=1, depending on size of used textures

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94374

--- Comment #7 from Wolfgang Wallner <wolfgang-wallner at gmx.at> ---
I can reproduce the same error, but with Intel and AMD hardware.

This is what happens when I run DRI_PRIME=1 steam, and I found this bug report
when I searched for the symptoms. As I said, in my case it is not related to
nouveau, as I use a laptop with an Intel/AMD combination.

My system:

The hardware is a HP Pavillion with mux-less hybrid graphics: Intel Sandy
Bridge and AMD Radeon HD 6770

Kubuntu 15.10 with KDE backports
Mesa 11.0.2

My symptoms:

DRI_PRIME=1 glxgears    --> works
DRI_PRIME=1 ./a.out 64  --> works
DRI_PRIME=1 ./a.out 512 --> transparent window
DRI_PRIME=1 steam       --> transparent window

If I can provide any additional information, please let me know (I have now
idea about debugging graphical bugs, so I don't really know what to provide).

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