Perfect glTF support is now my major task. It quickly became obvious that glTF is just a great asset format for our engine, it works beautifully with Blender and you can find plethora of sample glTF models on the Internet.

• Sketchfab contains a lot of models in the glTF format, both free and paid. I’m having lots of fun testing Castle Game Engine on them 🙂

• Google Poly also has some glTF models. Although most of them are a rehash of glTF sample models from Khronos.

• We have improved rendering of per-vertex colors (Color and ColorRGBA nodes in X3D) for glTF compatibility. The per-vertex colors can now modulate (not only replace) the default colors.

I’m working now on multiple glTF features: finishing PBR, gamma correction, and optimizing glTF animations.