I need to work with model layers in terrain-map mode and with depth-test deactivated.
The backface culling prevents from drawing the polygons when at the hidden side of the globe.
But i don't find a build-in solution for lines...
I don't want to make them polygonized lines as it will increase the number of vertices.
I think I can do it with a shader (result of the dot product from look vector and vertex can be used to know if the vertex is visible or not). I don't know if there is an easier way. I also wonder if the performance will not decrease with that shader (I have close to 150 000 points).