Impressive Robert.Thanks for sharing.ShayneSent from my Sprint Samsung Galaxy 
-------- Original message --------From: Robert Osfield 
<> Date: 3/17/21  1:36 PM  (GMT-07:00) To: 
OpenSceneGraph Users <> Subject: [osg-users] 
OpenSceneGraph/osgEarth vs VulkanSceneGraph/vsgpagedlod Hi All,Over the past 2 
1/2 years I've been mainly focused on VulkanSceneGraph project, this isn't yet 
at 1.0 but it's come along nicely.  This week I wrote an example that 
illustrates how to use vsg::PagedLOD and vsg::ReaderWriter to implement paged 
database that streams data from online tile serves such a OpenStreetMap and 
ReadyMap.  It's like a very simple and crude demo of osgEarth style paging.To 
look at the visual differences and performance differences I've recorded a 
camera animation path in osgviewer then run this same path with the same 
OpenStreetMap databasee in osgviewer using osgEarth, and then with the same 
path but using the new vsgpagedlod example.'ve
 upload the a video of running the two applications, first the OSG then VSG, to 
youtube: average fps for the 
2 minutes camera animation path was 878fps for the OSG/osgEarth combo and 
2698fps for VSG/vsgpagedlod, which is just under 3 times faster for the 
Vulkan/VulkanSceneGraph.As I explain in the video it's not an exact like for 
like comparison as osgEarth is doing blending between LODs, while the 
VSG/vsgpagedlod is selecting a higher level of detail for a given view.The 
osgviewer was run with default DrawThreadPerContext threading, while 
vsgpagedlod viewer was running single threaded.  In both cases the 
osgDB::DatabasePager and equivalent vsg::DatabasePager are doing all the 
loading in a set of background threads.The VSG supports running viewer 
multi-threaded but is unnecessary in this instance as the cull/draw 
traversal/dispatch are all happening less than half a millisecond :-)

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