I'm trying to make a database with some local data MNT (geotiff) and OrthoPhotos (geotiff) of a region of France. As the MNT coverage is larger than the Orthophoto coverage I wanted to set the color of the terrain to transparent as explained in the FAQ (terrain color set to #ffffff00). The problem is that the elevation data is still white. I've tried playing with the blending, feather_pixel but have found no solution.
Here is my .earth file :
Which version of osgEarth? I just tested this in the master branch and it worked as expected. (I used the readymap elevation layer from readymap_flat.earth along with an inset layer from hires_insets.earth, and a terrain color of #ffff00.
I'm using osgEarth 2.7.0 on Windows 7. I've tested too with readymap and hires and got the expected result. After digging somemore in my data I found that the problem is on my data. I have split an unique orthoimage in multiple geotiff. The problem is tha this unique orthoimage had a white background color so it generated the white tiles where I thought there was no image layer. I will have to find a proper manner to set a transparency mask to this useless data in order to succeed.
Thanks and sorry to have bothered you with a wrong problem.