Mir

Framedropping clients (swap interval zero) are jerky and stutter on android

Bug #1462296 reported by Daniel van Vugt
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This bug affects 1 person
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Mir
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Bug Description

Framedropping clients (swap interval zero) are jerky on android (arale).

For example:
   mir_demo_client_eglsquare -n when driven by a mouse
or to a less visible extent:
   mir_demo_client_eglsquare -n

Interestingly this bug has nothing to do with overlays. Because I've already got overlays disabled to work around other bugs:
   mir_demo_server_minimal --disable-overlays=1

See original description
Daniel van Vugt (vanvugt)
description: updated
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Come to think of it, this could just be a GPU scheduling limitation in the driver. We see the same issues on desktop with radeon and nouveau --> bug 1211700

Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Needs retesting on arale. But I can confirm it works on mako now.

Changed in mir:
status: Triaged → Incomplete
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Arale seems jerky still, but only with mouse input. Frame dropping clients are smooth with touch (or no) input.

Changed in mir:
status: Incomplete → New
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Oh, good bad news. That remaining jerkiness is just bug 1373696. It only happens with software cursor + android overlays. So this is now a duplicate of bug 1373696.

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