Avoid encoding redundant Metal render/compute commands to reduce CPU time #499
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This was referenced Apr 14, 2023
The old implementation didn't take into account `SetScissorRect` being called once with a different value then back to a value that's already set in the encoder.
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Xcode has been yelling about this for a while now but I haven't realised how bad the overhead is until I've profiled it myself. This PR reduces down all encoding commands as much as possible to save CPU time.
(late texture creation warning is irrelevant)