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Canvas troubleshooting: Difference between revisions
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→Hooking up Canvas to the Osg Stats: intro from: http://markmail.org/message/tc4lgn6qvj5f5bf6
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m (→Hooking up Canvas to the Osg Stats: intro from: http://markmail.org/message/tc4lgn6qvj5f5bf6) |
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For the [[FGCanvas]] mode, this just means that sky/sunlight and PUI rendering can be completely disabled for even better performance/appearance, i.e. Nasal/Canvas are up and running in under 5 seconds here normally. Likewise, this is a good thing for debugging and regression testing, i.e. to keep certain rendering features completely disabled - for example so that only Canvas related OSG/OpenGL calls show up in the gDebugger profile, i.e. much more fine-grained info, without having to patch FG. | For the [[FGCanvas]] mode, this just means that sky/sunlight and PUI rendering can be completely disabled for even better performance/appearance, i.e. Nasal/Canvas are up and running in under 5 seconds here normally. Likewise, this is a good thing for debugging and regression testing, i.e. to keep certain rendering features completely disabled - for example so that only Canvas related OSG/OpenGL calls show up in the gDebugger profile, i.e. much more fine-grained info, without having to patch FG. | ||
=== Hooking up Canvas | === Hooking up Canvas and Osg Stats === | ||
There are three parts to stats - the stats storage, gathering and the stats display. | |||
The osg::Stats class is a thread safe container for storing collected stats data, and various OSG classes can have Stats objects attached to them, such as osg::Camera and osg::View. | |||
The various traversals then fill the above Stats obects with data, in particular it's the Viewer/CompositeViewer/Renderer that do most of'the stats collection. | |||
Then we have the [http://trac.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a00804.html StatsHandler] that switches on the stats collect so the above start collecting and storing stats, and then displays the results. | |||
To add custom stats you'll just need to add your own stats collection, and you may be able to simply reuse one of the exiting osg::Stats object as a place to dump this data, then subclass from osgViewer::StatsHandler or simply derive your own for the display of your stats. | |||
The following patches are based on the [http://trac.openscenegraph.org/projects/osg//browser/OpenSceneGraph/trunk/examples/osguserstats/osguserstats.cpp osguserstats.cpp] example: | |||
<syntaxhighlight lang="diff"> | <syntaxhighlight lang="diff"> | ||
</syntaxhighlight> | </syntaxhighlight> | ||
=== Experimenting with Osg::Simplifier === | === Experimenting with Osg::Simplifier === | ||