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Metal buffer size alignment calculation
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| /// In Metal buffers (MTLBuffer) require a specific alignment, this function helps with that. | |
| /// <https://developer.apple.com/documentation/metal/mtlcomputecommandencoder/2928169-setbuffers#discussion> | |
| public func align<I>(_ value: I, to alignment: I) -> I where I: BinaryInteger { | |
| assert(alignment == 0 || (alignment & (alignment-1)) == 0, "Alignment must be 0 or power of 2") | |
| if alignment == 0 { | |
| return value | |
| } else if (value & (alignment - 1)) == 0 { | |
| return value | |
| } else { | |
| return (value + alignment) & ~(alignment-1) | |
| } | |
| } |
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https://developer.apple.com/documentation/metal/mtlcomputecommandencoder/2928169-setbuffers#discussion