TomRaynor Posted June 23, 2013 Share Posted June 23, 2013 Is there a nicer way to do this in Houdini than the method I have used in the attached hip file (basically casting light into a volume and using an occluding object)? Is there some sort of volume shader approach? Thanks! volumeLight_v01.hip Quote Link to comment Share on other sites More sharing options...
rafaelfs Posted June 28, 2013 Share Posted June 28, 2013 Haven't looked at your file, but as far as I know the method you described is supposed to be the best way. Now I know it can be expensive if the camera is inside the volume, it's a matter of dialing the parameters right in the mantra ROP and all... Quote Link to comment Share on other sites More sharing options...
rafaelfs Posted June 28, 2013 Share Posted June 28, 2013 Here, I've done a few tweaks to your file. It's rendering ok, I think... Of course, for final I would increase the pixel samples a bit. Cheers volumeLight_v01.hip Quote Link to comment Share on other sites More sharing options...
moondeer Posted June 29, 2013 Share Posted June 29, 2013 (edited) see attached i've added an expression controlled vol qual here that i've found useful in the past. sometimes it is good to increase accuracy (steps) rather than pixel samples for volumes. this seems to make the streaks pop a bit more. of course there is a nice set of openVDB tools i've not even explored that may achieve vol.lighting. volumeLight_v01-odforce-moondeer.hip Edited June 29, 2013 by moondeer 1 Quote Link to comment Share on other sites More sharing options...
TomRaynor Posted June 29, 2013 Author Share Posted June 29, 2013 Thanks for the replies guys! Very helpful. Quote Link to comment Share on other sites More sharing options...
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