Hi Bad news first: I cannot replicate this issue :frowning: Whatever I do in the playground, I cannot replicate it. As you can see here https://playground.babylonjs.com/#MZ7QRG#2267 I investigated issues with transparency, animations, bones, and overlapping meshes. But since there is a good chanc…

Thanks for the repro! This PR will fix the problem: Fix crash when using a custom material for LineMesh with an effect layer BabylonJS:master ← Popov72:fix-mismatch-effectdefine-rtt opened 06:23PM …

let’s ping @Evgeni_Popov or @sebavan

Lines needs a special shader as they for instance can not have normals. You can not use a standard or pbr material with them. You could nevertheless attach your own shader material to them. We do that here in Babylonhttps://github.com/sebavan/Babylon.js/blob/master/packages/dev/core/src/Meshes/line…

Ok thanks @sebavan But I am confused now. Both the source at linesMesh.ts (no check for instanceof ShaderMaterial or so) and the working example provided above ( https://playground.babylonjs.com/#MZ7QRG#2267 ) seem to suggest that providing a StandardMaterial should be alright. Or is it more like so…

Interesting, are you on our latest version ?

It looks like the same error as this thread using the highlight layer. I can’t repro either thou… [image] Bug on Highlight layer: Cannot create property '_needNormals' on string '#define NUM_BONE_INFLUENCERS 0 #define HIGHLIGHT' babylon.js:1 Uncaught TypeError: Cannot create property ‘_needNorma…

You could also try using the background material to color the lines for another option… :slight_smile: Babylon.js Playground Babylon.js playground is a live editor for Babylon.js WebGL 3D scenes

Yes, I think I do: “babylonjs”: “^5.28.0”.

Oh, interesting! I just tried that except in my case it is the GlowLayer! So: a) GlowLayer on + material on linesMesh set: crash a) GlowLayer off + material on linesMesh set: no crash but also no color. It is just black.

@sebavan @Blake Ok, got it. This should crash now: https://playground.babylonjs.com/#MZ7QRG#2271

Oh sweet thanks a bunch :smiley: @sebavan I marked Evgeni_Popov fix as solution now. Hope this is alright.

Exception if material parameter set on LinesMesh

Bugs

Blake October 13, 2022, 7:35pm 6

It looks like the same error as this thread using the highlight layer. I can’t repro either thou…

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Exception if material parameter set on LinesMesh

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