dataSourceHash.h File Reference

#include "pxr/pxr.h"
#include "pxr/imaging/hd/api.h"
#include "pxr/imaging/hd/dataSource.h"

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Typedefs
using	HdDataSourceHashType = size_t

Functions
HD_API HdDataSourceHashType	HdDataSourceHash (HdDataSourceBaseHandle const &ds, const HdSampledDataSource::Time startTime, const HdSampledDataSource::Time endTime)

Typedef Documentation

using HdDataSourceHashType = size_t

Definition at line 34 of file dataSourceHash.h.

Function Documentation

HD_API HdDataSourceHashType HdDataSourceHash	(	HdDataSourceBaseHandle const &	ds,
		const HdSampledDataSource::Time	startTime,
		const HdSampledDataSource::Time	endTime
	)

Compute hash of a data source by using sampled from startTime to endTime.

Warning: this hash is not strong and is bad for fingerprinting where the hash for two data sources being equal has to imply that the two data sources have equal data with high probability. The has is only 64bit and makes various performance tradeoffs such that is suitable for a hashtable but not for fingerprinting.