ranxerox Posted July 2, 2009 Share Posted July 2, 2009 hey all, I recently dove into fur to try to put moss on some terrain in a shot. I've gone through the masterclass on fur and I modified the 'fur_style' shader to have a curl parameter (as described in the video). In order to produce the curl, the curves need tangents. I wasn't sure which tangent otl to use (there are 2 on the exchange: http://www.sidefx.com/index.php?option=com...er&Itemid=8, and http://www.sidefx.com/exchange/info.php?fi...p;versionid=90) I tried both, and it seems like the one from sidefx (http://www.sidefx.com/exchange/info.php?fileid=90&versionid=90) is the one I'm after (because it worked). So I got my scene to where I wanted it, and now it's time to render. The problem: when I load the scene in hbatch (to render on a single machine), I get the following errors: Error loading: mossPatch4_v14.hip Warning: Problem while synchronizing child node: Warning: Skipping unrecognized parameter "isvector". Skipping unrecognized parameter "isindexpair". [/obj/ground_fur/clumps/tangent1/build_tangent/addattrib__tangent] Warning: Skipping unrecognized parameter "isvector". Skipping unrecognized parameter "isindexpair". [/obj/ground_fur/clumps/tangent1/build_tangent/addattrib__radial] Warning: Not enough elements found for parameter "Default". Not enough elements found for parameter "Value". [/obj/ground_fur/clumps/tangent1/attribcreate__ptprim] Warning: Not enough elements found for parameter "Default". Not enough elements found for parameter "Value". [/obj/ground_fur/clumps/tangent1/attribcreate__tangent] Warning: Not enough elements found for parameter "Default". Not enough elements found for parameter "Value". [/obj/ground_fur/clumps/tangent1/attribcreate__n_vtx1] Warning: Not enough elements found for parameter "Default". Not enough elements found for parameter "Value". [/obj/ground_fur/clumps/tangent1/attribcreate__lvtx] Warning: Not enough elements found for parameter "Default". Not enough elements found for parameter "Value". [/obj/ground_fur/clumps/tangent1/attribcreate__tangent_varmap] the funny thing is, the scene renders fine and the curl appears to be working. My big problem is that when I put this on our render farm, this error causes the script doing the grind to fail (even though these seem more like warnings than error messages). So I tried to reinstall the otl in different ways (install in current hip file only, install to scanned otl directories). I'm afriad I'm missing something. I seem to alwyas get these errors. Unfortunately I don't know enough about how otls work to understand them. does anybody have an idea ? thanks -ranxx Quote Link to comment Share on other sites More sharing options...
michael Posted July 2, 2009 Share Posted July 2, 2009 IIRC the tangent otl was made in a version of Houdini 8 that has some slight differences (in the VOP network) with the version you are probably using... I know that Jeff Wagner did a new version ~april '08 if my old e-mails can be counted on... I'd suggest rebuilding the otl in the Houdini version that you have running...there is nothing weird in there, just reproduce it in a new session and see if that helps... Quote Link to comment Share on other sites More sharing options...
ranxerox Posted July 2, 2009 Author Share Posted July 2, 2009 nice, that worked thanks ! What I did was right-click on the tangent sop, 'allow editing of contents' and 'save operator type'. Now I don't get those warnings when I load the file. happy july 4th -ranxx IIRC the tangent otl was made in a version of Houdini 8 that has some slight differences (in the VOP network) with the version you are probably using...I know that Jeff Wagner did a new version ~april '08 if my old e-mails can be counted on... I'd suggest rebuilding the otl in the Houdini version that you have running...there is nothing weird in there, just reproduce it in a new session and see if that helps... Quote Link to comment Share on other sites More sharing options...
michael Posted July 2, 2009 Share Posted July 2, 2009 hahahaha glad it helped! Quote Link to comment Share on other sites More sharing options...
mrice Posted July 3, 2009 Share Posted July 3, 2009 You can also use the polyframe sop to get tangents Quote Link to comment Share on other sites More sharing options...
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