Help to understand icons

[Nefisto]

Hello, sorry if this was created on wrong place.

I trying to automatic get icons from minecraft folder. I found a bunch of them in - ..\assets\minecraft\textures\item - BUT after some researching I noticed that not all of them are there, then I tried to search in whole folder for some items that was missing and when I type something like - cooblestone - I just got two .png, and are images from textures like:

 

But I`m expecting to found something like an icon:

 

So, my question is, how minecraft generate cobblestone icon in game? it generate an small block in runtime using textures?

Edited May 11, 2022 by Nefisto
Removed some words

[Nefisto]

Its itemRenderer the class name? cause i dint found it in my instalation folder

[Nefisto]

Okay, I'm not modding minecraft, just using their icons for other purposed, so I want to know where their icons stay. As I said in first post, I was able to found some icons, so getting the acacia boat image is possible because I know where it exist, but for cobblestone (and other items) I cannot found their icons. I'm looking for textures in - %APPDATA%\minecraft\versions\1.18.2\1.18.2\assets\minecraft\textures\item.

 

And as I didnt found the icon in the whole folder, I was suspecting that it create some kind of thumbnails on runtime, but I'm not sure about it, I also tried to find in installation folder, but it does not have any image file.

[Nefisto]

Im looking for the icon, not the texture, look at the difference between texture in first image and the icon on third image. I want the third image

[Nefisto]

Or at least understand how the game create the third image using the first image

[Nefisto]

Are you saying that the thumbnail is generated in runtime?

[Draco18s]

44 minutes ago, Nefisto said:

Are you saying that the thumbnail is generated in runtime?

Yes.