[Bug 37973] mz800 emulator no screen refresh when switching apps

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=37973

--- Comment #3 from Oldrich Jedlicka <oldium.pro at seznam.cz> ---
Ok, I tried to eliminate the desktop environment and used `XSESSION="failsafe"
startx` command on my Gentoo box. This started the twm window manager with some
xterms. The mz800 emulator starts, but loses the screen as soon as I move the
mouse over the emulator window.

I tried this:

1. twm - black screen when I move the mouse over the mz800 emulator.

2. KDE - black screen when I click on a different window (partially overlapping
the mz800 emulator) and click back. I have the KDE desktop effects and OpenGL
2.0 composition enabled. When I switch the effects off and use XRender
composition, the reproducibility is much lower, but happens from time to time.

I am using the following environment:

Gentoo Linux, ATI Mobility Radeon HD 3470 (open-source drivers)

mesa-10.4.2
xf86-video-ati-7.5.0
gentoo-kernel-3.18.1
xorg-server-1.16.3
twm-1.0.8
kde-4.14.3

I am not sure whether this is d3d issue, but when I resize the window it writes
that "fixme:d3d_surface:surface_cpu_blt Filter WINED3D_TEXF_LINEAR not
supported in software blit.", so it is using wine d3d for drawing.

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