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How to occlude glow effect


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Hello everyone,

I am trying to find a way to properly occlude the glow effect. Consider:


from the other side:


The glow effects are not occluded by the walls and other opaque objects.

Related code:

const lamps = scene.getMeshByName("hotel_lower_lamp");
const glow = new BABYLON.GlowLayer("glow", scene);

Just to be sure, I have also set opaque materials:

material.transparencyMode = 0;

Hope someone can point me to the right direction.

Thanks alot!

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  • 4 weeks later...


As shown in PG: https://playground.babylonjs.com/#QLBNSV#2

1. Include sphere1 in the glow layer, and set its material's emmissiveColor to black. Then sphere1 will occlude sphere2's glow effect.

If you want both spheres to glow, consider setting their emmissiveColor to different colors or intensities. Don't over-blow the exposure so you can see the "occluded" effect.

PG: https://playground.babylonjs.com/#QLBNSV#3

2. You can use the sphere materials' emmissiveColor to control the glow color, or use "gl.customEmissiveColorSelector" on the glow layer.

Doc: https://doc.babylonjs.com/how_to/glow_layer#controlling-glow-color-per-mesh

Hope this solves your problems. Please let me know if there are any further questions.


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  • 2 years later...

I am not sure the solution described above is a good one. If I have a lots of objects in the scene,  I have to add many objects to the glow layer so that glowing objects does not shine through them. It is 2021 and I hope someone has a better solution than the one above. Thanks in advance.

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