Does a light need to be a parent to its proxy for shadows to work well?

[ctarrington]

Hi all

I am experimenting with lights and shadows in Babylon JS and really liking it!

I did stumble onto one thing that confuses me. Initially I was using an invisible box that I would use as a parent for a light source, a visible proxy for the light source, etc. Animate the invisible box and everything else follows nicely. This works fine for illumination. When I added shadows to the scene things broke down a little bit. If an object both receives and casts shadows then it fails to be illuminated.

Reversing the parent relationship fixes things - if the light source is the parent then illumination, shadows and animation all work smoothly.

Here are some playgrounds to show the different scenarios. I left out the animation as it doesn't seem relevant.

Light as parent to the proxy - Everything works
http://www.babylonjs-playground.com/#25VTCJ#0

Proxy as parent to the light - casting shadows works but receiving shadows causes the blue box to lose illumination 
http://www.babylonjs-playground.com/#25VTCJ#2

Proxy as parent to the light (receive only)  - casting shadows works, removed receive so that illumination works
http://www.babylonjs-playground.com/#25VTCJ#3

So, am I missing something? Or is having the light as the parent just the way to go?

Thanks
 - CT

[GameMonetize]

Hey this is a good question

And guess what: this is a bug

I'll get it fix really sooooon