In the following we would like to explain how this works.
The Showcase allows you to use an existing model in Sketchfab and load texture files you have hosted elsewhere into your model. It works by adding the relevant channel data to the model URL.
By default, the Showcase searches for a material called “main_material” to update the texture channels. With the parameter “material_names” you can specify further materials like for example:
In this case the given texture channels will work on both materials: body and body_floor.the available channel names are:
You can deactivate some channels by leaving their parameters empty (z.B. material_emissive=).
Update: To activate the Material Showcase you have to add the following parameter:
Note: the Showcase can only load images that support the CORPs standard such as Dropbox and Imgur.
Full demo: Fabric materials.