Question textures are importing with the wrong resolution?

i have a bunch of 10x2 textures that i am using for color palettes, but unity says that they are actually 8x2

here they are in the unity resource folder, definitely 10x2


and here's the texture in the editor, apparently 8x2


this is a major issue for me, because it seems to be causing the texture to be sampled just completely incorrectly. what do i do about this?

 

Some of the image compression modes require an image with dimensions divisible by 4. A lot of portable devices and computers are going to find it easier to use images that have widths divisible by 4. Try turning off compression, and if that doesn't work, you could make your image 12x2 and only sample pixels in the leftmost 10x2 area.

 

There's also an explicit setting to change to nearest power of two you should turn off.

 

okay i figured this out, apparently by default unity will snap textures to a power of two? i just had to turn this off in the import settings. absolutely insane that that is a default setting

 

It's not that crazy considering most of the time you want to upload the texture to the GPU, but it is something to be aware of.

 

No, this is actually the most sane thing to do.

 

It is not insane, because power of two is what all GPUs use. If you want maximum speed, that is. If you want non-POW2 textures, this is usually reserved for sprites, which are stored in pow2 atlases. So by default, if you make a texture for a videogame, it is going to be pow2. In all engines.

 

yall i understand what 2^n texture sizes are for that doesn't make it a non ridiculous thing for a game engine to do to your art assets by default without telling you lol. sometimes images need to have ten pixels instead of eight

 

This is true, sometimes you do need that, but more often you need it to be a power of two, therefore the default being forcing everything to power of two makes sense.

I think having some sort indicator that "hey, the image I generated here is resized compared to the input image you gave me" could be cool, but that's a level of polish and thoughtfulness I don't see Unity's UI being able to achieve.

But forcing the textures to be powers of 2 by default still makes sense.

 

Why should we have to flag every other texture as a power of two if we're going to be importing those far more often?