threehundredbpmshredder
04-03-2007, 03:37 PM
Hello there. I am trying to render the shadow of a sphere over a plane. I want the shadow to be visible and nothing else. In other words, I want the whole background to be transparent except for the shadow.
I tried unchecking the sphere's primary visibilty and it did good. The sphere became invisible although the shadow was still lying on the plane. I used point light (light color=black, shadow color=green). The problem is the plane. I couldn't make it transparent like the object. When I uncheck the primary visibility of the plane and render, the shadow disappears. I tried using "Use Background" shader and it did the same thing (the shadow didn't appear).
Am I doing something wrong? Is it impossible to render a shadow with everything else transparent? Thanks in advance.
I tried unchecking the sphere's primary visibilty and it did good. The sphere became invisible although the shadow was still lying on the plane. I used point light (light color=black, shadow color=green). The problem is the plane. I couldn't make it transparent like the object. When I uncheck the primary visibility of the plane and render, the shadow disappears. I tried using "Use Background" shader and it did the same thing (the shadow didn't appear).
Am I doing something wrong? Is it impossible to render a shadow with everything else transparent? Thanks in advance.