@Lukas:
Yes, I mean stairway appearance (right image).
I tested many VRML viewers in the past - they were able to load JPG, PNG and GIF textures.
If JPG or PNG loaded, I had blended edges. If GIF texture used, the result was sharp edges.
I was able to mix blended terrain textures with sharp bilding textures in one scene.
Must be then some sort of viewer/renderer settings (i.e maybe the SW reading the images has specific instructions per image type?). Again, eventually a texture is just data, some textures don’t even save color values at all (e.g normal maps or displacement/Height maps). So there is data and the way you interpret it depends totally on the renderer.
So I am interested, if it is possible in BMS as well.
No it’s not. The terrain just tile textures on the surface using Linear/Aniso sampler settings, in order to get an additional layer on top of those textures will mean new code that will take care of that (e.g this could have been done by creating such “buildings” image with transparency around the buildings and then using that texture over some existing terrain textures when appropriate).
I really hope though that future will allow us to not count on textures for buildings.