Hi Robert, I already thought that it is not the most efficient way to do updating every frame, but the problem I have is that the vegetation has nothing to do with the ground because I will create the vegetation from vegetation definition files. These files are generated from a tool. In these files I will have some types of vegetation like area of plants, lines of plants, single plants and so on. And from these types I will build the vegetation db by grouping them from bottom to top. A single tree for example is a lod node from highpoly model with one or two low poly models down to billboard. These LOD node will be grouped(after geometric sorting) to pagedlod nodes. and these pagedlod noded will be grouped again until I have only one top node. When new definition files are created the vegetation db will be reprocessed. This makes it possible to enlarge the veg db step by step. And with geometric sorting the types, it should be possible to balance the pagedlod nodes quite efficient. Until now it's just my conception. But this will require to update the vegetation positions on the fly. So any ideas :-) ?
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