This is the first time I am experiencing striations in a render. I took a partial screengrab of the image that was produced from mantra and as you can see the shadows and some of the geometry is not shaded smoothly.

What do I need to adjust in my file to get it to render properly?

Shadow Bias issue?

Are you using raytraced or depth map shadows on your lights?

thanks for replying jeff, i am using ray traced shadows on one of the most recent builds but i have put together a similar lighting situation before and this never happened until now. ive never heard of shadow bias but the render makes it look like overlapping geometry which might be a similar principle?

Tips :- 1 frame your objects tighter within the bound of the light . 2:- Mantra rop > shading tab , adjust the raytracing bias . The scale of your scene objects will effect the this value.

Rob

Thank you Houdini guru/circusmonkey. That setting in the Mantra ROP served very well to adjust. I knew there was something I had to do but I was adjusting the wrong parameters in the wrong places.

I appreciate you and jeff responding to my basic question.

-markerline