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Subject: render only direct light rays (passing directly from object to camera)

samlochner opened this issue on May 09, 2010 · 5 posts
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samlochner ( ) posted Sun, 09 May 2010 at 3:56 PM · edited Fri, 22 November 2024 at 4:10 AM

 Is it possible to only render light rays that pass directly from an object to the camera? ie. not refletected, refracted, etc.? 

For example, I have a sphere which is partly blocked from the camera by a semitransparent surface. The render should show the part of the sphere that is not blocked by the surface, and not show the part that is blocked by the surface. (I could make the surface opaque, but it needs to be semi transparent for other objects in the scene) 

Is there a material setting, layer option, or perhaps composite technique that could achieve this? 

Thanks, 
Sam

haloedrain ( ) posted Mon, 10 May 2010 at 12:13 AM

Perhaps you should composite two renders?

samlochner ( ) posted Mon, 10 May 2010 at 8:03 AM

 Any ideas on what settings I would use for the two renders and what composite type I would do?

Thanks,
Sam

ysvry ( ) posted Sun, 23 May 2010 at 7:57 PM

you can set render depth if you switch to raytrace, did you try that?

for some free stuff i made
and for almost daily fotos

samlochner ( ) posted Sun, 23 May 2010 at 8:03 PM

 got it working,
thanks

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