pointer: use software rendering when monitor is mirrored #6587
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Describe your PR, what does it fix/add?
Force software locks to monitors when they are being mirrored to another screen, so we can render the pointer properly in mirror monitors. Fixes #6455
Is there anything you want to mention? (unchecked code, possible bugs, found problems, breaking compatibility, etc.)
I'm incrementing the lock counter for each new mirror. Maybe we could just increment/decrement it once if mirror list isn't/is empty, but I found it more concise this way.
Is it ready for merging, or does it need work?
Ready.