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CompositeViewer support: Difference between revisions
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=== Status updates === | === Status updates === | ||
2020-11-22 | 2020-11-22 | ||
* To encourage wider testing, '''CompositeViewer support''' is | * To encourage wider testing, '''CompositeViewer support''' is to be enabled by default on next <ref>https://sourceforge.net/p/flightgear/mailman/message/37159361/</ref> <ref>https://sourceforge.net/p/flightgear/mailman/message/37159461/</ref> <ref>https://sourceforge.net/p/flightgear/mailman/message/37160096/</ref> | ||
2020-11-21 | 2020-11-21 | ||
* merged into next: {{flightgear commit|f62e5b9ce3462758b48f4c711eb7c3bf4bcc7061|CompositeViewer:Support for multiple view windows using osgViewer::CompositeViewer}} <ref>https://sourceforge.net/p/flightgear/mailman/message/37158652/</ref> | * merged into next: {{flightgear commit|f62e5b9ce3462758b48f4c711eb7c3bf4bcc7061|CompositeViewer:Support for multiple view windows using osgViewer::CompositeViewer}} <ref>https://sourceforge.net/p/flightgear/mailman/message/37158652/</ref> | ||
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=== Problems === | === Problems === | ||
* for the time being, use of reset/re-init and aggressive OSG threading options seems to cause stability problems even without having cloned any views <ref>https://forum.flightgear.org/viewtopic.php?f=6&t=38334</ref> | |||
* Using OpenSceneGraph-3.6 causes problems elsewhere: [[OSGText Issues]] (under investigation as of 11/2020) <ref>https://sourceforge.net/p/flightgear/mailman/message/37157550/</ref> | * Using OpenSceneGraph-3.6 causes problems elsewhere: [[OSGText Issues]] (under investigation as of 11/2020) <ref>https://sourceforge.net/p/flightgear/mailman/message/37157550/</ref> | ||
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== Motivation == | == Motivation == | ||
[[File:CompositeViewer 3 cloned views and OSG stats with draw masks.png|thumb|Experimental [[CompositeViewer Support]] showing 3 cloned views, with | [[File:CompositeViewer 3 cloned views and OSG stats with draw masks.png|thumb|Experimental [[CompositeViewer Support]] showing 3 cloned views, with [[Draw masks]] set (only skydome shown) + OSG stats (~ 120 fps/window) while using [[Howto:Activate multi core and multi GPU support|CullThreadPerCameraDrawThreadPerContext]] <ref>https://forum.flightgear.org/viewtopic.php?f=6&t=38334</ref>]] | ||
Until mid-2020, FlightGear only supported one view position at a time. Multiple independent view positions (e.g. one screen for the tower view and a second screen for the plane) would complicate a "locked to cache" flag quite a lot...<ref>http://www.mail-archive.com/flightgear-devel@lists.sourceforge.net/msg28864.html</ref>. | Until mid-2020, FlightGear only supported one view position at a time. Multiple independent view positions (e.g. one screen for the tower view and a second screen for the plane) would complicate a "locked to cache" flag quite a lot...<ref>http://www.mail-archive.com/flightgear-devel@lists.sourceforge.net/msg28864.html</ref>. | ||