OTOY Forums

Hi there,

I was wondering if it is possible to achieve a video feedback looping effect in Octane for Cinema 4D? I know that Cinema 4D has added a camera shader in the Mograph shader menu, but I was wondering if it was possible to achieve this effect with Octane?

I have attached a reference image for the effect I'm trying to achieve.

Thanks!

Creating a loop in the node graph is not possible so you couldn't take the output of the render and use it as a texture on the TV in the same node graph. That would have been the easy way.

So you would need for the camera to do a "Droste" effect. This will be more complex if the TV is curved or there is lens distortion and it doesn't project a clean quadrilateral in image space. You will need to figure the boundaries of the TV screen and how the TV/camera lens is distorting the image. Then for each pixel inside the TV area you would replace the ray with the corresponding one shooting the larger scene.

Ok. Thanks for the reply! Much appreciated.