Div Posted July 15, 2008 Share Posted July 15, 2008 (edited) hi, I'm trying to render only the front or back faces of my polygons, instead of both... I can't find the parameter in the mantra output node, is it possible to achieve with mantra ? This is easily possible in xsi with mental ray, under the raytracing parameters... Thanks. Edited July 15, 2008 by Div Quote Link to comment Share on other sites More sharing options...
eetu Posted July 15, 2008 Share Posted July 15, 2008 Hi. Sadly there doesn't seem to be an obvious setting for that (or i just haven't seen it). You would need to enclose your shader in an if-block, testing for an isFrontFace. onesided_material_01.hip Quote Link to comment Share on other sites More sharing options...
TheUsualAlex Posted July 15, 2008 Share Posted July 15, 2008 In your Geometry object, under the Render->Geometry->Backface Removal -- would that have worked? Quote Link to comment Share on other sites More sharing options...
eetu Posted July 15, 2008 Share Posted July 15, 2008 "oops" Quote Link to comment Share on other sites More sharing options...
Div Posted July 16, 2008 Author Share Posted July 16, 2008 That's working.... Thanks a lot guys... Quote Link to comment Share on other sites More sharing options...
ackermanken Posted February 18, 2020 Share Posted February 18, 2020 As a follow up to this - - how might I go about rendering ONLY the backfaces, and ignorning front facing geometry? Quote Link to comment Share on other sites More sharing options...
ackermanken Posted February 18, 2020 Share Posted February 18, 2020 I figured it out. Just use the Reverse node at SOP level, along with the Backface Removal flag at the object level. Quote Link to comment Share on other sites More sharing options...
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