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If you tweak cage meshes in Maya that are to be subdivided and displaced, you end up worried about a couple things: what will happen to your seams when you do that tweak and what is the displacement going to do when applied to your tweak? As I mentioned in an earlier post, you can do a polygonal displacement preview but sometimes it is sufficient to just preview the displacement on your cage mesh in Maya. So I wrote a script that will be part of the next version of V-Ray Tuner that makes a temporary surface shader and applies the displacement map for the currently selected mesh as the diffuse colour. If you run it again, it switches back to the original shader and deletes the temp surface shader – no crap left around.
One nice feature of this script is that it uses the same file node as your material so even if you change the link to a new file you might have touched up, it will update the original shader’s displacement file node even though you are previewing the surface shader. I hope you find it useful.
Grab the script here. It works with all renderers.
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