How to bake atlases 3D models for Unity?

To bake atlases for 3D models in Unity, prepare non-overlapping UVs first, then use built-in tools (e.g., Texture2DArray) or plugins (e.g., Auto UV Atlas) to merge textures into a single atlas—boosting performance by reducing draw calls. - **Fix UVs**: Use Unity’s UV Editor to remove overlaps (prevents texture bleeding). For complex models, try the Auto Unwrap tool or free UV Master plugin. - **Set Up Baking**: Choose your tool, adjust atlas size, padding, and mipmaps. - **Preview & Apply**: Check the atlas in the Scene view for stretching or bleeding before applying it to your model.