I am new to 3D rendering. Currently I have an idea about minimap. As far as I know, minimap generally rendered by a camera facing the terrain. In this way, minimap shows the upper faces of all the mesh to render.
I am wondering whether it is possible to render the minimap like the meshes have a different material, or merge with a normal map and height map of the meshes. What I means is that to add more mesh information(e.g. normal, height) into the 2D minimap, not just a simple rendering form a sky camera. Is it possible or valuable to do so?