Turns out you can write your own custom image filters with Metal Performance Shaderspic.twitter.com/mYDVhbkGOZ
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@warrenm that's interesting. Does it offer any performance benefits over a regular compute shader?
@FlexMonkey None at all, it just makes it easier to chain with the built-in filters if you use the MPSKernel interface.
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As the principal author of the MPSKernel class, while I applaud your bravery and ingenuity, I can’t say that this is at all recommended or tested. I am surprised it did not assert due to missing library or similar infrastructure that we add to all of them.
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This was in the “dumb party tricks” category even at the time (>2.5 yrs ago!) If I were doing this today, I might borrow the Interface, but I wouldn’t piggy-back the implementation.
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While I have you on the line, though: can you characterize the overhead of generating a command encoder for every encoded kernel? Why not take an encoder instead of a command buffer?
End of conversation
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