Some objects are visible through surface textures

[MishaPhysics]

Runways defined as objects are visible through surface textures. Expecially it's noticeable with enabled surface elevation in the mountain landscape. So, I created the *.cfg file for a base, located in /Config/Earth/Base/<basename.cfg>, set a runway texture "Runway2.dds" and it's visible through mountains. Here is a screenshot:
https://www.orbiter-forum.com/threads/tile-making.41264/post-610919
Besides this can be seen at the Cape Canaveral through the hills.

I noticed that the objects like hangars aren't visible through textures, so maybe it must be some parameters those do this for runways. I was thinking of definition the runways as hangar-like objects or other "mesh", but it's a very strange "solution".

Also, the sun is visible through mountains.

I tested the x64 build.

[jarmonik]

This is a non trivial problem existing forever. It's a trade-of of two different problem the one described above and terrain clipping through objects such as runways and landing pads. The current problem is considered to be lesser bad of the two. There is one way of reducing the problem a lot by rendering the terrain twice but it could still cause clipping with-in base's bounding sphere if there is a small hill inside the base. But the performance/benefit trade-off is questionable.
There are no current intentions to do anything about this.

[MishaPhysics]

I've made some tests. Maybe it could help. Please, take a look here:
https://www.orbiter-forum.com/threads/d3d9client-development.16787/post-614916