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Rendering HDR light shadows?

Posted: Thu Nov 12, 2009 1:40 am
by tennet
Is it possible to render a shadow pass when using HDR lights (using an "image emission texture")? Attached testrender is lit using two gradient HDR lights and then a spotlight using standard emitter material. The shadow pass to the right doesn't show the actual shadows in my render, I think it only shows the shadows cast by the spotlights in the scene, which are placed behind the bottle.

Is it possible to render the small drop shadows, seen in the render, as a separate pass?

Any help or tips is much appreciated. Thanks in advance!

// tennet

Image

Re: Rendering HDR light shadows?

Posted: Thu Nov 12, 2009 11:18 am
by tennet
Noone who knows? Any workarounds? Hope someone can help. Thanks!

// tennet

Re: Rendering HDR light shadows?

Posted: Fri Nov 13, 2009 12:14 am
by Mihai
Could you please try rendering the shadow pass with the spotlight hidden and check how the shadow pass renders?

Re: Rendering HDR light shadows?

Posted: Wed Nov 18, 2009 4:14 pm
by oz42
I've had a similar problem with Sky Dome as a sky option.

I can get an HDRi environment to create a shadow pass but when I use Sky Dome the shadow image is completely blank, although there are shadows in the beauty pass. Any ideas or is it not possible with Sky Dome?