This takes a screenshot, the output buffer contains the RGBA8 image.
Stubbed with [5.0.0+], where it now returns error 0x7FECE.
== Cmd2 ==
Calls the same internal func as cmd1, where the last param is an additional cmd input u64 instead of hard-coded value 0x5f5e100.
Stubbed with [5.0.0+], where it now returns error 0x7FECE.
= caps:ss =