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protocol: allow to send a zero output refresh rate

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Fixed refresh rate doesn't always make sense for all outputs. In case
it's not available or not relevant, allow compositors to send zero.

For instance the can be the case for virtual outputs.

Signed-off-by: Simon Ser <contact@emersion.fr>
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Simon Ser 2018-09-29 22:25:47 +02:00 • committed by Daniel Stone
parent ea11878d00
commit 3ab56ef8fa
1 changed files with 3 additions and 0 deletions
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protocol/wayland.xml
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@ -2465,6 +2465,9 @@
willing to retrieve the output size in the global compositor
space should use xdg_output.logical_size instead.
The vertical refresh rate can be set to zero if it doesn't make
sense for this output (e.g. for virtual outputs).
Clients should not use the refresh rate to schedule frames. Instead,
they should use the wl_surface.frame event or the presentation-time
protocol.