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Pixel selection with layers : add subtract, intersect

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It's possible to select pixels with Ctrl+left Click on thumbnail layer.
It's also possible to add pixels with Ctrl+Shift+ left Click on another thumbnail layer.

Is there a way to subtract current selection with layer content (like Ctrl + Alt + left Click in photoshop) ?
And an other way to have intersection between current selection and layer content (like Ctrl + Alt  + Shift+ left Click in photoshop)?


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You can save selections as spare channels and intersect and subtract from there.

  1. Make a selection
  2. Save selection as a spare channel
  3. Make a second selection and do the same, you can now load selections and subtract and intersect them.




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