RSATom / QmlVlc

[ABANDONED] libvlc wrapper for Qt Quick 2/Qml
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[OS X] Tearing when we have animations on top #63

Open Ivshti opened 8 years ago

Ivshti commented 8 years ago

I have the following situation, which I've tested only on OS X and I assume is platform-specific:

QmlVlc is overlayed by a QtWebEngine (a-la-webchimera-desktop) when animations are triggered in the webengine, I get tearing (few times) on the frames. The more lengthy the animation, the more tearing there is.

What I assume is happening: animations trigger a redraw on the background element, which in turn catches the QmlVlc out-of-sync on a texture/buffer that is part one frame, part another.

I also assume this can be worked around by using a double (triple?) buffer. Maybe something is not right here: https://github.com/RSATom/QmlVlc/commit/8c8832d599b283f2d1d4ed7706661847f935cc5e ?

Maybe on a forced redraw, you need to always pick the last frame which is not currently modified from the pool?

RSATom commented 8 years ago

Thanks, I'll look.