UVs not Working for 2.0 branch

[John-DeCorato-HZ]

Title is self-explanatory. Here is a test file and the output.

test-cude.dae
test-cude.gltf

[lasalvavida]

@John-DeCorato-HZ, the converter does optimize out unused texture coordinates to reduce the model size. Since your material contains no textures, they are removed.

[John-DeCorato-HZ]

Hmm, we have a dynamic asset pipeline where we add textures separately, so we don't save them with our models. Is there a workaround besides adding dummy textures to everything?

[lasalvavida]

So this is a pretty easy fix. I'll do it if I have time, but if someone else is willing to open a PR, this is a great beginner issue. The fix would entail adding something like a preserveUnusedSemantics boolean to COLLADA2GLTF::Options, defining the option in the argument parser and using the option to disable the call to GLTF::Asset::removeUnusedSemantics.

[John-DeCorato-HZ]

Excellent. I compiled a version myself without removeUnusedSemantics already but that option would make future proofing easy.

[lasalvavida]

Closed by #245