Bearbeiten von „GLB / glTF“

https://medium.com/@matthewmain/how-to-import-a-3d-blender-object-into-a-three-js-project-as-a-gltf-file-5a67290f65f2 Von Blender nach Three JS als glTF
 https://developers.facebook.com/docs/sharing/3d-posts/glb-tutorials/ - Facebook Manual
 https://www.khronos.org/blog/art-pipeline-for-gltf - Übersicht über den Workflow nach glTF

== glTF - Spezifikation ==
The glTF format supports the following textures for the Metallic-Roughness PBR model:

    Base Color
    Metallic
    Roughness
    Normal
    Ambient Occlusion
    Emission

The format does expect the textures in a specific format, however. The Base Color, Normal, and Emission textures are saved as individual files, preferably a PNG as the format is lossless. The Ambient Occlusion, Roughness, and Metallic textures are saved in a single channel-packed texture to reduce the number of texture loads. The textures need to be packed into the channels of your texture as follows:

    Red: Ambient Occlusion
    Green: Roughness
    Blue: Metallic

Going forward, I will refer to this channel-packed texture as the ORM texture for Occlusion, Roughness, and Metallic.