OTOY Forums

Is there a way in Octane for Blender to use textures with light emitters to create fake shadows? For example use a striped texture to simulate window blinds or a texture of branches and twigs to simulate a tree throwing a shadow through a window. This would also be useful for creating spotlights via textures or other kind of lights based on hdr-files ... the closest I got was using IES files to create spotlights, but it is not exaclty what I am looking for.

An example:

So, I guess I have to "physically" model the shadow casters? No shortcut?

Put a plane with an alpha texture between your light source and shadow receiver? That is, paint the shadow casters instead of modeling them.

Hey, thanks for your idea, limeforce. I was hoping for a solution inside the Emission shader, though.

But until then, I guess I will have to build a model or an alphatextured object around the light emitter.

Also, I have trouble with the orientation of IES-Lights. They don't rotate with the emitter object. One has to rotate them with a transform node inside the shader tree, which is a terrible solution for animated lights.