**...could I also make a terrain from the greyscale bumpmap and then apply my texture to the terrain? **-Not just yes, but hell yes! I've been doing that for years.

Very basically, I take the image (texture) desaturate it completely, lay a layer above that image in which I fill with middle gray (rgb all = 128), and set the opacity to that gray layer to about 90%-normal. Now this serves as a Terrain Map.

The gray layer is beacuse you need very little of the original image to create a Terrain. The Terrain will serve as the main form (low frequency bump) and your regular bump map will serve as the detail (high frequency bump)

In some cases, the resulting Terrain carried enough good detail, almost no bump if no bump at all was neccessary.

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