Efficient icon resize

Hello,

I have 256x256 .png icons. However in my game I need them to be smaller. After applying desired size (or scale) in transform in sprite they do not look good. I clearly see pixels. Could you please share what is the best way to resize them? Do I need to use some graphic application like Photoshop or is there a good way to accomplish that in unity?

Thank you in advance

 

What you’re seeing are the artifacts of mip-mapping.

Scaling them in Photoshop or Gimp to the exact size you need will be the highest possible quality, but rarely do you only need one exact size.

I posted an example work around on how to use a custom shader on icons to keep them significantly sharper at the cost of a slightly more expensive shader.
https://forum.unity.com/threads/how...-and-crisp-even-while-rotating-solved.651841/

And wrote a whole article on why.
https://medium.com/@bgolus/sharper-mipmapping-using-shader-based-supersampling-ed7aadb47bec

 

Thank you for such detailed answer.

I read your post and also article. However as a beginner in game development I only have limited understanding of that matter.

Also my case is very simple: I have a 2D Sprite Renderer that has a 256x256 png set as Sprite. I applied scale of 0.2, 0.2, 1. Could you please say exactly what do I have to set in order to make my sprite look better?




In normal scale it looks fine:


Thank you in advance for help

 

I also tried different options on my texture (point, bi and trilinear), size and compression. In spite of that my file resized in photoshop still looks WAY better. Do I miss anything? Maybe some specific project options?

 

Hey! I've tried method described above and it helped, thank you!

 

The forum post and article I posted are about how those filtering options aren’t enough to get good sprite scaling and you need a custom shader to get something closer to what you see in Photoshop.

However it also looks like your sprite asset doesn’t have mip maps enabled.

 

Thank you for help.

Another problem that came up recently is that some textures got the 'POT' problem:


What does it mean? How to fix it? It lower quality of these sprites considerably.

Thank you