The rate at which data is fetched by the step function.
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@property(assign, nonatomic) NSUInteger stepRate;
For example, if the stepFunction property is set to MTLStepFunctionPerInstance, then if stepRate is 1, data is fetched for every instance; if stepRate is 2, every two instances, and so on.
The distance, in bytes, between entries in the buffer for the attribute.
Determines which aspect of command execution triggers data fetches.
The frequency with which a function fetches attribute data.