Having a node material with a InputBlock with value, but want to have different value for different mesh. Tried to use onBeforeRenderObservable for each mesh, but it won’t work unless something like markAsDirty or scene._cachedEffect = null or _drawWrapper._forceRebindOnNextCall = true. All of these…

Hello :slight_smile: For example in your case you can use the mesh.instanceColor from NME Then after loading your node material, you can modify the color : box1.instancedBuffers.instanceColor = new BABYLON.Color4(row / rows, col / cols, 0, 1); Playground ++ Tricotou

Thanks for this, instancing makes excellent performance compared to meshes, but this playground is only to show the case of changing value for each mesh. In real cases, the meshes can have different vertex attributes so can be rendered as instances. Also, color is the most common property to make an…

That’s great, thanks. So the only thing keeping me from this is to render meshes with different vertex attributes (box and sphere for example) as instances.

You mean setting the same material on different meshes (sphere and box) which are not instances of the same original mesh ?

Yes, different meshes with the same material, and wanted some value to change for different mesh (like the world matrix)

It’s not a problem to set a different attributes on each mesh, even if not an instance. In fact each mesh is somehow an instance of itself… Have a look : Playground Only fresh and unique meshes, no instances

Thanks for that, but is it required to use color4? Do I have to align all other values I wanted to define as per-mesh by 4 floats? Does not work for color3: Babylon.js Playground Babylon.js playground is a live editor for Babylon.js WebGL 3D scenes Works wi…

[image] kzhsw: is it required to use color4? Do I have to align all other values I wanted to define as per-mesh by 4 floats? Theorically you can use whatever you want. Directly from the NodeMaterialEditor, I don’t know (Maybe it would be a nice feature to be added : an instanceFloat node, to …

NodeMaterial: how to efficiently set per-mesh value?

Questions

Tricotou June 26, 2024, 7:53am 4

Maybe have a look for example at this post where Popov is explaining that you can as well register some custom attributes

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NodeMaterial: how to efficiently set per-mesh value?

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