How to smooth the edges of a 2D texture?

Question

Java

Hello, the game outputs a texture that has ladders on the edges when scaled down (GLScale)

and this is what it looks like in the original game:

How can I smooth these edges?
Didn't help:
GL11.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
GL11.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

Answer 1

Not an expert, but perhaps instead of GL_LINEAR you need to write something like GL_NEAREST
upd: Have you read this?