Description: by default images are rendered with anti-aliasing in Blender that accommodates and compensates for images appearing pixelated when shown in real-time or rendered out to image. For certain types of content, pixel art in particular, this is not desirable. While there are a number of ways to set up a material tree to produce jaggies as a 'node' process, for simple projects that require Minecraft style blocky pixels a more straightforward approach is to use
Texture Interpolation, an option available in
Material Properties.