Stalkerx777 Posted December 24, 2014 Share Posted December 24, 2014 Hi. Couple of questions regarding VRAY_Procedural. As we know mantra procedural can generate geometry in 2 ways: When ray hits bounding box, if bounding box is defined Always generate if bounding box is not defined (as stated in houdini help) My first question is: How to tell my procedural to ignore bounding box? I cant find a way. If i'm not set bbox size > 0 in my initialize() method, render() method will not be called at all. The second question is about advisability of computing correct bounding boxes for mantra procedural, considering using PBR trace engine. I understand that in case of REYES rendering, this is very useful, since no raytracing occurs in scene and geometry will only be generated if render bucket hits procedural's bounding box. When geometry goes out of camera, it will be discarded, and this all make sense. In case of raytracing, any ray type can cause procedural to generate geometry right? So 99% chance that it will be generated right at the beginning of rendering. Considering this, is there any profit to compute bounding boxes for my vray_procedural, beside "delayed" generation? Thanks! Quote Link to comment Share on other sites More sharing options...
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