With the somewhat new R15 avatars, I was expecting for the shirts and pants on Roblox to also get an overhaul. This fell quite a bit short.
The ratio for the Shirt/Pants template is 45 : 43
Roblox only allows a size of 585x559 to be uploaded, anything else is rejected.
By doubling the resolution of this, I believe that higher quality clothing can be achieved on Roblox.
Here is some resoltions that use the 45 : 43 ratio.
The main issue is probably the relatively low resolution of the composite textures for humanoids, not the uploaded/website resolution of the shirts/pants image. All of the clothing is downscaled ingame so that it can fit into a single texture that gets loaded into GPU memory.
Resolution of uploaded shirts isn’t what ScriptOn is talking about though. In game the humanoid composites all of the clothes into one texture, and that texture is 1024x512 in size (might have changed by now, don’t quote me on the specifics lol)