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https://issues.apache.org/jira/browse/GUACAMOLE-963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17039502#comment-17039502
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Mike Jumper commented on GUACAMOLE-963:
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Guacamole's protocol supports client-side bitmap caching. It would be better to
either allocate an off-screen buffer the size of the cache required by X11VNC,
thus keeping the display the expected size (easier), or dynamically translate
the copies to/from the X11VNC cache area into separate buffer copies (which
would likely have better memory performance).
> Add support for x11vnc -ncache
> ------------------------------
>
> Key: GUACAMOLE-963
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-963
> Project: Guacamole
> Issue Type: New Feature
> Components: VNC
> Reporter: Octavia Togami
> Priority: Minor
>
> I would like Guacamole to support x11vnc's {{-ncache}} option.
> In my mind there are two possible ways to do this: either allowing users to
> crop out sections of the connection (they would still need to be persisted in
> the VNC client's memory, though this does save on network transmission to the
> Guacamole client); or allow users to scale the view by _width_ rather than
> _height_. The latter would implicitly hide the ncache space off-screen if the
> width of the screen matches that of the other screen, though it wouldn't work
> very well if they aren't the same.
> Related: https://issues.apache.org/jira/browse/GUACAMOLE-421
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