What are the methods for altering the material of a glTF model using THREE.js?

I've created a model using Blender and baked all the lighting and textures. However, when I import it into THREE.js in .glb format, it automatically uses the standard material. While this may work in certain cases, my concern is that I want to retain the baked lighting and textures without having to import them as separate images. Is there a way to switch the material from standard to basic while preserving my baking information?

Answer №1

If you're searching for it, the term is KHR_materials_unlit in glTF, or commonly known as "Shadeless" in Blender. To export this from Blender to glTF, you can utilize this specific node graph:

By following this setup, the resulting glTF file will contain the application of KHR_materials_unlit to the material, and the texture's baked lighting will be preserved in ThreeJS.

Answer №2

By following these steps, you are able to import your model and apply a custom material to it.

This method can also be used with a glb model, although Three.js strongly recommends using the gltf format instead.

const filePath = "path/to/your/model";
const texturePath = "path/to/your/texture";

const loader = new GLTFLoader();
const texture = new TextureLoader().load(texturePath);
loader.load(filePath, function ( gltf ) {
    const model = gltf.scene;
    model.traverse((obj) => {
        if(obj instanceof Mesh){
            obj.material = new MeshBasicMaterial({map: texture})
            }
        }
    )

}, undefined, function ( error ) {
    console.error( error );
} );

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