Custom sphere scene 2

Custom spheres scene for testing shadow with bias 1e-2f

Cornell box scene with shadow bias value of 0.0001

Simple shadow scene with bias value of 0.001

Some visual bug but looks cool!

Fixed the self shadow artifacts using shadow ray offset bias of 0.0003

In this image the blue sphere has some weird shadow artifacts

Simple test shadow scene! However, There is a weird shading artifact on the top part of the sphere.