Treat zero alpha as opaque

CesiumGS / obj2gltf

Convert OBJ assets to glTF

Apache License 2.0

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Treat zero alpha as opaque #164

Closed lilleyse closed 5 years ago

lilleyse commented 5 years ago

This fix is already in master but was not backported to 1.0. An alpha of 0.0 usually suggests a problem in the export so the converter instead treats it as opaque.

lilleyse commented 5 years ago

@likangning93 can you review?

likangning93 commented 5 years ago

Works as described, thanks @lilleyse!