Various glTF and FBX File Sizes


(Emir Sinan Gürlek) #1


I am confused a bit about the file sizes. I checked various downloadable models and their glTF and FBX file sizes; some of them are equal, some FBX triple times bigger and some glTF double times bigger.

What makes the file size vary this much and why?

An example model below: glTF is 77 MB , FBX is 25 MB.


Looks like this is related to the various compression we do when generating textures for the glTF download. Our 3D team is discussing how to improve this.

(Emir Sinan Gürlek) #3

I realized another strange issue related to this. Check this Stylized Axe model for example. All of its maps are mirrored, metallic map doesn’t exist and the roughness map looks colored in glTF version. Are these usual behaviours?