When a 3D model’s shaders look pixelated during creation, it’s typically from low texture resolution, missing anti-aliasing, or low render/sample settings that fail to smooth edges or details.
This occurs because the shader lacks enough pixel data for fine textures—low-res textures have too few pixels, while no anti-aliasing leaves jagged, blocky lines.
To fix it, try increasing texture resolution, turning on anti-aliasing (like MSAA), or raising render sample counts in your 3D software—these quick tweaks often clear up pixelation.