Cloning from a Floating Image

1.

In the Tool Properties toolbar at the top of the screen, enable the Image Clone checkbox:

2.

Make any other changes you want to the size, rotation, stretch, or position of the source image.

This is exactly the same as in the normal mode.

3.

To move the image next to where you want to paint, Ctrl/Cmd-click on the floating image to set the source point.

The clone source preview displays in a red circle, while your brush is the white circle.

4.

Paint normally.

Mari clones the texture as you paint, taking the resolution for the cloned texture from the source image. For example, a 4k image provides cloned texture at 4k resolution.