Hi Houdini Noob here,

I want to know how to get a shadow only pass, no illumination, just where light occlusion is happening? In maya there was that convient tab where you could specify what type render pass you wanted, but in Houdini I don't see a shadow option?

thanks,

James

Check here, there is a video on how to export light pases, that might help you.


http://www.vimeo.com/5943053 [vimeo.com]

I'm still stuck, and not sure how to approach this. I have a picture of an aircraft hanger. I'm trying to take my 3d model of a plane and light it so that it looks like it's in the picture. I've placed it on a plane that matches the perspective of the ground. Now I'm trying to project a shadow onto the plane and then comp that as a multiply layer on the backplate (aircraft hanger picture). How do I get just the shadow so that I can use it to comp with the backplate?

thanks

Assign a Vex Shadow Matte shader to your plane (go to shops Tab->Vex Shadow Matte) and make your airplane a phantom object by toggling “phantom” on, in the Render Tab of your airplane object…


Forgot to mention. You will see the shadow only in you look at the alpha channel of your render…