I am in the process of developing an alpine grass airport scenery with underground hangar, where a 3d-object represents part of the land, blended into the mesh. Also, photo tiles are used for the surrounding ground and the 3d-object is textured using parts of the same photo tiles and the default detail1.bmp is applied to it.
While testing different times and seasons to check some bump maps on textures, I realized that the shadow cast from the mountain is not applied at all to the 3d model that represents the hangar and the rocks around it. However, it is nicely cast on the factory building 3d object just next to it. The same also applies to the general lighting of the ground compared to the object, as in low light you can clearly see where the object stops and the ground starts, while the difference is more subtle at midday, with more direct light on the surface.
At first, I realized that the factory texture has a bump map assigned while the grass has not. So I assigned a quick bump map to it just to check but that did not work. I checked all texture settings in MCX and they are identical. The only other difference between them is that the factory is made by a friend in FSDS, while the rock object is made by me in Sketchup. However, both were recompiled in MCX. To keep backwards compatibility, I still use the FSX SDK in MCX to compile models.
Any thoughts or ideas would be appreciated.
While testing different times and seasons to check some bump maps on textures, I realized that the shadow cast from the mountain is not applied at all to the 3d model that represents the hangar and the rocks around it. However, it is nicely cast on the factory building 3d object just next to it. The same also applies to the general lighting of the ground compared to the object, as in low light you can clearly see where the object stops and the ground starts, while the difference is more subtle at midday, with more direct light on the surface.

At first, I realized that the factory texture has a bump map assigned while the grass has not. So I assigned a quick bump map to it just to check but that did not work. I checked all texture settings in MCX and they are identical. The only other difference between them is that the factory is made by a friend in FSDS, while the rock object is made by me in Sketchup. However, both were recompiled in MCX. To keep backwards compatibility, I still use the FSX SDK in MCX to compile models.
Any thoughts or ideas would be appreciated.