[jira] [Commented] (GUACAMOLE-963) Add support for x11vnc -ncache

["Mike Jumper (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GUACAMOLE-963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17039502#comment-17039502 ] 

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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