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Hi -
I'm having problems with making objects 'not visible to camera' - I'm getting black splotches where those objects are.
We're doing a photomontage in a cityscape - we have a model of the city that we want to reflect in our building and cast shadows onto our building, but they shouldn't be in the rendering so that we can easier lay it into the background photo. I know the work around by changing the 'Secondary rays bias' to a higher value, and that works if there is only a couple of 'layers' of buildings to 'ignore' (because I've only had to change the bias to .01 to fix it). But in some of the views we are essentially looking through hundreds of faces (buildings), so I have to put the ray bias to atleast 9000 to completely get rid of the black splotches - which makes our glass render with no transparency. (I only understand that it interprets distances between faces different, or something along those lines...)
Is there another workaround? Otherwise we'd have to render these views in multiple passes which is a pain when there are 16 views.
This was never a problem with scanline - can someone explain why Vray interprets this setting different?
Thank you for any hints/help -
Nick
I'm having problems with making objects 'not visible to camera' - I'm getting black splotches where those objects are.
We're doing a photomontage in a cityscape - we have a model of the city that we want to reflect in our building and cast shadows onto our building, but they shouldn't be in the rendering so that we can easier lay it into the background photo. I know the work around by changing the 'Secondary rays bias' to a higher value, and that works if there is only a couple of 'layers' of buildings to 'ignore' (because I've only had to change the bias to .01 to fix it). But in some of the views we are essentially looking through hundreds of faces (buildings), so I have to put the ray bias to atleast 9000 to completely get rid of the black splotches - which makes our glass render with no transparency. (I only understand that it interprets distances between faces different, or something along those lines...)
Is there another workaround? Otherwise we'd have to render these views in multiple passes which is a pain when there are 16 views.
This was never a problem with scanline - can someone explain why Vray interprets this setting different?
Thank you for any hints/help -
Nick
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