See screenshot, on the left is the Metallic texture set to max size 2048 (source file and Unity default import is 4096) with No Compression set. On the right is the same model but with Compression set to UASTC
I am using the method of drag/dropping the model into my scene and right click in hierarchy > Needle > Selected object as compressed GLB
unity package of model attached
by user 103054507105067008
Why another thread @ROBYER1 ? Isnt it the same issue basically like in the post from yesterday?
Can you try setting max size to 4k?
That 2k issue would be caused by UnityGltf then i believe
That thread was about the export via UASTC compression changing the colours, this one is about the exported texture with ‘None’ set looking worse than ‘UASTC’ compression. I can consolidate this into one thread if you want though, apologies
by user 103054507105067008
Tried 4096, it’s like the resize algo does something to the file to make it appear blocky, if it is set to 4096 which is the same as source file and Compression ‘None’ I would have assumed it would have been the same file as the source
by user 103054507105067008
This looks like etc1s (both left and right)
toktx:texture(MFCR_UV_v1_FBX_MFCR_metallic_blue_roughness_green_AO_red): Spawning → toktx --genmipmap --bcmp --assign_oetf linear --assign_primaries none --threads 16
by user 103054507105067008
Exported with these settings on the source texture
by user 103054507105067008
Can you share it without compression applied? Export via context menu but the non-compressed option?
There you go, Unity Package on the root of this issue has the source files too
by user 103054507105067008
That file looks fine, no compression ext in it for that particular texture. We’ll have to check why compression still runs for it I think
At least in your case here it looks like “None” falls back to “ETC1S” which is worse than Automatic for this texture. You can use WebP for the time being if you want smaller files at similar quality, 2k WebP/UASTC on this data texture probably looks better than 4k etc1s.
Thanks, hoping for None to not touch the source file aside from a resize if size is changed there
by user 103054507105067008
“not touch the source file” means: 100% JPEG then. We don’t copy out source files for textures, there’s too many things that can go wrong with that
E.g. you bring a PSD, TGA, a PNG with ICC profile, a JPEG with progressive, … all things that Unity will happily eat (and convert internally) but that will totally make your data invalid for any glTF viewer.
No, If no compression extension is in the file it means it runs auto compression using toktx. It has to have the extension set compression to none explicitly
OK, then this is what we’re doing wrong, that’s easy then 
Explicit none means: no extension currently
Happy to test it out
by user 103054507105067008
