Is the DEBUGMODE uniform in PBRMetallicRoughnessBlock supposed to work in NME?
Nothing changes if I select a PBRMetallicRoughnessBlock and then choose the debug mode choices in the dropdown (Alpha was selected in the screenshot):
The screenshot is taken from the NME example used in the Node Material and PBR documentation: https://nme.babylonjs.com/#EPY8BV#6