This is one of over 5964 effects generated by Filter Forge, a Photoshop plugin that allows you to create your own filters.
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To open this filter, you must have Filter Forge 2.0 or higher installed on your computer. If you don't have it installed yet, click here to download Filter Forge
This filter is originaly (excellently) done by Mike Blackney.. All credits go to him. I only added height smoothing (something similat to what CrazyBump is doing) and switching L/R, T/B since it's sometimes necessary..
Games, texturing, normal, map, normals, snippet.
This filter has earned its author one of our rewards. They are given to the authors of popular filters and include a free copy of Filter Forge.