First, you need to make a circular mask and a circular border in PhotoShop, the main color is white, the background is transparent, and the format is saved as png
After importing set it as Sprite
Create an empty object "minimap"
Create an Image "mask" and an Image border below it, then create a RawImage below the mask
Add a Mask component to the mask object and assign the mask image to the mask
Create a RenderTexture and assign it to HeadCamera and RawImage
Run the game, you can see the minimap
Finally add the border and it's perfect
