Trouble with BlurExponentialShadowMap

[max123]

Hi,

I'm having trouble with applying BlurExponentialShadowMap to a scene created in Blender. I've tried a bunch of settings and lights, yet no matter what I do, the whole bloody scene remains grey! 
I've tried all lights in Blender that can work with shadows in Babylon, I've set some extreme settings (kernel 4 - 512)... 

The blender file is attached.

The settings I tried are below:

shadowGenerator.useBlurExponentialShadowMap = true;
shadowGenerator.useKernelBlur = true;
shadowGenerator.blurKernel = 

 

Any ideas guys?

test.blend.zip

[Guest]

can you save your .Babylon on GitHub, go to rawgit.com to get a link to it and repro in the PG?

It will be easier for us to help finding the right setup

Also:http://doc.babylonjs.com/babylon101/shadows#troubleshooting

[max123]

Hey @Deltakosh, here's the PG:

https://www.babylonjs-playground.com/#T70UQK#1

[Guest]

Here we are: https://www.babylonjs-playground.com/#T70UQK#2

Do not include the ground in the shadow casters as it will cast shadow on itself and this won't work due to the terrible precision we have with WebGL

[max123]

Thanks @Deltakosh!

No self-shadows - got it.

However, shadowGenerator.blurKernel doesn't do anything in this example: I've tried values ranging from 2 to 32,768 - the shadow remains unchanged.

[Guest]

You are using a point light (which generate cubemap shadows) and this kind of light cannot generate blurred shadows.

You have to use a directional light

[max123]

Hi @Deltakosh,

I've updated the scene to use a spotlight: https://www.babylonjs-playground.com/#T70UQK#5

Now the shadow is just gone.  

[Arte]

Hi @max123,

https://www.babylonjs-playground.com/#T70UQK#6

[max123]

@Arte, thanks for the input. Changing kernel size doesn't do anything to the shadow's blur though..

[Guest]

because line 47 change the filter