How to implement post processing effect Unreal Bloom

[henrik-dons]

Hello all,

I see the model viewer has support for post processing effects (https://modelviewer.dev/examples/postprocessing/)

Is there a chance I could implement this one?
https://threejs.org/examples/webgl_postprocessing_unreal_bloom.html

I'm not sure how to get started, so any guidance would be appreciated.
Thanks in advance!

[StillOnMyWay]

Have you already tried the Bloom Effect from the https://modelviewer.dev/examples/postprocessing/ page ( the one with what looks like a water fountain) and compared to the ThreeJS bloom? There is a <bloom-effect> that is already built out for model viewer that you can make use of, but beyond that you should also be able to grab the ThreeJS scene graph and modify it. Just know that it isn't fully supported, and a future may introduce breaking changes. To grab the graph you can try. const modelViewer = document.querySelector('model-viewer'); const internalSymbols = Object.getOwnPropertySymbols(modelViewer); const sceneSymbol = internalSymbols.find(s => String(s).includes('scene')); // Find the symbol with 'scene' in its description if (sceneSymbol) { const internalScene = modelViewer[sceneSymbol]; // Now you have a reference to the Three.js scene console.log(internalScene); // You can traverse the scene graph, access objects, etc. } else { console.warn("Could not find the internal scene symbol."); }

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On Fri, Jun 27, 2025, 1:16 PM Henrik ***@***.***> wrote: Hello all, I see the model viewer has support for post processing effects ( https://modelviewer.dev/examples/postprocessing/) Is there a chance I could implement this one? https://threejs.org/examples/webgl_postprocessing_unreal_bloom.html I'm not sure how to get started, so any guidance would be appreciated. Thanks in advance! — Reply to this email directly, view it on GitHub <#5059>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACAKTJK6HFIJCT2B35LHNSD3FWC7VAVCNFSM6AAAAACAJUPTXWVHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZYGUYDIMZWGE> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>