I just saw this in change-log for b4: UI: Adding the ability to use Sprite Tight mesh inside Unity UI https://unity3d.com/unity/beta/unity2018.3.0b4 Really great that we can use tight packing now in the UI, very useful to reduce overdraw. I immediately gave this a try with a cross-hair, but the generated mesh isn't a good approximation of the shape. It works really well for a square though. Spoiler: Screenshot Is there any chance the mesh generation can be improved? Perhaps expose settings to allow the user to control the generation to some degree. Things like a knob to allow the tool to generate more detailed meshes, for example to trade vertices against overdraw.