Mcronin Posted October 2, 2003 Share Posted October 2, 2003 Just a couple of questions. Is filterwidth a value in pixels? I've looked through all sorts of books and notes and can't find the answer to this. I assume it's pixels, but I want to be sure. Also, I've seen shaders that let you set filterwidth in S and T individually, however in VOPs in the Texture and Displacement Map VOPs, filterwidth is single a float. How is it possible to do seperate filterwidths in S and T in VOPs? Quote Link to comment Share on other sites More sharing options...
athomas Posted October 2, 2003 Share Posted October 2, 2003 without going in to too much detail, filterwidth just calculates the potential changes in the s and t direction using derivatives. Representing a micropolygon or pixel. There is a detailed explanation in Advanced Renderman, and as far as I know it works the same way in VEX/VOP's. Hope this helps and I understood your question correctly. Quote Link to comment Share on other sites More sharing options...
AndrewVK Posted October 2, 2003 Share Posted October 2, 2003 Yes it is posible. Tools -> Operator Type Manager Find standart Vop/texture operator RMB on it -> Copy Operator Name: mytexture Operator Label: My Texture Save To Library: $HOME/houdini 6.1/otls/OPcustom.otl Accept Now find just copied "Vop/mytexture" operator RMB on it -> Edit contents Replace Dialog script (see atachment) Click Accept...enjoy...but remember!!! ONLY RAT textures valid for filtering. DialogScript.zip Quote Link to comment Share on other sites More sharing options...
AndrewVK Posted October 2, 2003 Share Posted October 2, 2003 Ooops....wrong attachment. This file is ok DialogScript.zip Quote Link to comment Share on other sites More sharing options...
Mcronin Posted October 2, 2003 Author Share Posted October 2, 2003 ...but remember!!! ONLY RAT textures valid for filtering. Yeah, I figured that out the hard way yesterday. I spent the whole day pretty much trying to figure out why I couldn't filter a displacement map. It was a TIFF. Thanks for the help! Quote Link to comment Share on other sites More sharing options...
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