xantor opened this issue on Jan 11, 2009 ยท 25 posts
svdl posted Mon, 12 January 2009 at 9:46 AM
The same trick can be used to create "quick and dirty" bump/displacement maps from a color texture.
The "quick and dirty" method consists of desaturating and inverting the color map. See the attached .JPG file for the material room setup.
Note: the bump map will look quite dark. In fact, after inverting the image map (using the formula bumpValue= 1-colorValue) I subtract another 0.5, which gets you both positive and negative bump in the same map.
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