JCB Posted August 14, 2009 Share Posted August 14, 2009 Hi guys, I wanna render separate alphas for individual objects without takes. Is this anyhow possible? Quote Link to comment Share on other sites More sharing options...
TheUsualAlex Posted August 15, 2009 Share Posted August 15, 2009 Hi guys, I wanna render separate alphas for individual objects without takes. Is this anyhow possible? Yeah, you can use Bundle I believe. Or use the Pre-Render Script field of your Mantra ROP to turn things on/off. Quote Link to comment Share on other sites More sharing options...
beeemtee Posted August 15, 2009 Share Posted August 15, 2009 you can render the Op_Id (Diagnostic: Node Id) vex variable to an extra image plane. it will assign an integer number to every object, which is easy to separate during compositing. it's very easy to setup, but it's not anti-aliased. another option is to export a constant 1.0 from your shaders with different names like (e.g. 'myObject_alpha'). it's harder to setup, but aa-ed. cheers bmt Quote Link to comment Share on other sites More sharing options...
JCB Posted August 15, 2009 Author Share Posted August 15, 2009 you can render the Op_Id (Diagnostic: Node Id) vex variable to an extra image plane. it will assign an integer number to every object, which is easy to separate during compositing. it's very easy to setup, but it's not anti-aliased. another option is to export a constant 1.0 from your shaders with different names like (e.g. 'myObject_alpha'). it's harder to setup, but aa-ed. cheers bmt could you please explain how to do that with the constant 1.0 ? Quote Link to comment Share on other sites More sharing options...
beeemtee Posted August 21, 2009 Share Posted August 21, 2009 hi, sorry for the slow answer. here you find everything related to deep-rasters (extra image planes). you will need the first and the third part of the how-to section. http://www.sidefx.com/docs/houdini10.0/rendering/deeprasters cheers bmt Quote Link to comment Share on other sites More sharing options...
JCB Posted August 22, 2009 Author Share Posted August 22, 2009 hi, sorry for the slow answer. here you find everything related to deep-rasters (extra image planes). you will need the first and the third part of the how-to section. http://www.sidefx.com/docs/houdini10.0/rendering/deeprasters cheers bmt sorry, but what exactly do I have to do ? I know how to setup extra imageplanes. Quote Link to comment Share on other sites More sharing options...
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