GLB is not rendered correctly about trimesh HOT 4 OPEN

Neat model! It looks like a lot of that is bad support for alpha in trimesh, I did notice when you scale the sclera down it does line up with the iris texture.

import numpy as np
import trimesh

if __name__ == "__main__":

    fn = 'models/featuretype.STL'

    trimesh.util.attach_to_log()

    m = trimesh.load('~/Downloads/g1.glb')

    m.geometry['Sclera'].apply_scale(9/10)

    # looks a lot better than showing the whole scene                                               
    e.show()

    m.show()

from trimesh.

@mikedh , thanks! I think you identified the issue. Indeed, by scaling down the sclera a bit, we can see that it is not as transparent as it is supposed to be. I'm attaching the render from another engine for comparison:

from trimesh.

Your example also points out that there is another issue in pyrender, because in pyrender I could not get even what you can get in trimesh:

In pyrender Sclera is much larger than the inner geometry, by some reason.

from trimesh.

As it turns out, the trimesh rendering issue is likely due to the absence of KHR_materials_specular, KHR_materials_ior and KHR_materials_transmission support in the backend (pyglet?).

from trimesh.