Feature alpha blending (#20)
Feature alpha blending (#20)

* Used names for accessing input/output slots for better readablity and robustness

However, name is not always uniques and there seems to be a bug in
blender on the "virtual" normal node, which can neither be assigned
to a temporary variable nor accessed via name.

* Add alpha blending using a BSDF Transparent node

ksons/gltf-blender-importer