vincebagna opened this issue on Apr 30, 2007 · 3 posts
vincebagna posted Mon, 30 April 2007 at 5:37 AM
Hi all!
I'm wanting to make a velvet shader, i'm sure it's very easy to have that with the function editor, but how?
mstnicholas1965 posted Mon, 30 April 2007 at 11:09 AM
Try this. In the Highlight dialog select "variable highlights" then go to edit funtion. Insert an Iput node set to "angle of incidence". Back in the Highlights dialog make your global intesity 100% and your Global size 20%. That will give you the basic sheen. The rest will depend on the objects geometry and/or bump/displacement maps.
Good luck.
keenart posted Mon, 30 April 2007 at 12:19 PM
Creating a displacement map for velvet is time consuming, but not impossible. The closest example is the Spiky displacement material.
You would have to create a map with much smaller spikes much closer together, that resemble fibers on the order of one eighth the size of human hair. That would create a tremendous amount of geometry to render. However, with a good 2D Graphic Editor, and lots of patience, you could draw the map.