MBTilesImageLayer cannot find pbf or webp plugins

[bclay1297]

I am finally getting through some of my wish list of capabilities, I tried to load the prebuilt Natural Earth mbtiles and got an error message could not find webp plugin. Then I tried to load prebuilt us OSM mbtile file and got an error pbf plugin not found. I am using OpenSceneGraph 3.6.5 and osgEarth from somewhere around September with Visual Studio 2022.

Since I am getting errors about sub plugins I assume the osgEarth MBTilesImageLayer is working for the most part but it needs other plugins to support the data within them. I could not find any webp or pbf plugins in the output directory though I did see a mention of webp in one of the xml files

Are these sub-projects or independent libraries I need to work with mbtiles? Are there other plugins I might need to work with some of the common dataset used in mbtiles?

Bruce

[bclay1297]

Adding to previous post
GDAL_DATA and GDAL_DRIVER_PATH are both set.
gdalinfo --formats shows webp as supported.
ogrinfo --formats shows osm / pbf as supported
gdal.dll is in the executable pas for my application

The source code I used to add the mbtiles dataset is attached

I tried to load a pbf file directly and did not get the same error. The app paused for a while as if it was reading the data but nothing showed in the Earth view. The code I used to test that is also attached

AddMbtiles.txt
AddVectorLayer.txt