Is that a scaler that turns healthy specimens into anime abonimations?
It does upscale images, and that makes it pretty much shit: upscaling doesn't add more detail. That's what the uncompressed textures are for: no compression = more detail.
When you just look at upscaled textures in an image viewer, upscaling does nothing.
The problem is that in game original low res textures get blurred by the game renderer texture filtering into smeared shit.
This is why I play old lowres games like Quake for example, with texture filtering disabled.
It may be a little pixelated up close, or it may flicker a little from a distance, but overall is a lot more detailed and sharp compared to filtered blurry shit.
Upscaling a texture by 2x, or 3x factor does not destroy any original information and creates a middleground effect, when original pixel is represented by 4, or 9 pixels block and only edges of the pixels block get blurred by filtering.
While in the center of the pixels block remains a solid area that keep the color of the pixel from the original source texture. Upscaled texture gets a lot less blurred by filtering basically.
Another thing are mipmap levels, depending on a distance the engine uses downscaled versions of the textures.
When you upscale a texture 2x, then the second downscaled mipmap level is basically the original texture, instead of 2x downscaled texture and so on.
This is why upscaled textures from
Makabb screenshots look a lot more detailed than vanilla ( and definitely better because of that imo ) and you are in a complete denial of what is clear to see.