|Render Time:||24 ms & 46ms|
|System Type:||64-bit OS, x64-based processor|
|Installed RAM:||16.0GB (15.7 GB usable)|
|Processor:||Intel(R) Core(TM) i7-9750H CPU @ 2.60Ghz|
There is a clear line of shadow that seems to cut the shading on the blue sphere in the box scene. After outputing the shadow with other components, I believe that's just the artifact from Blinn-Phong Shading, where the N dot H term shifts the center of specular lighting a bit so that it happens to lie in the boundary of shadow in this case.
shadow with material color
shadow with diffuse
shadow with specular