public static void Execute(NativeArray <byte> inputData, int maxElements, UnsafeUntypedBufferAccessor untypedBufferAccessor,
NativeArray <PersistenceState> persistenceStateArray)
{
Debug.Assert(maxElements < PersistenceMetaData.MaxValueForAmount);
int elementSize = untypedBufferAccessor.ElementSize;
int sizePerEntity = elementSize * maxElements + PersistenceMetaData.SizeOfStruct;
for (int i = 0; i < persistenceStateArray.Length; i++)
{
PersistenceState persistenceState = persistenceStateArray[i];
#if ENABLE_UNITY_COLLECTIONS_CHECKS
if (persistenceState.ArrayIndex >= inputData.Length / sizePerEntity)
{
throw new IndexOutOfRangeException("CopyByteArrayToBufferElements:: persistenceState.ArrayIndex seems to be out of range. Or the sizePerEntity is wrong.");
}
#endif
PersistenceMetaData *inputMetaDataPtr = (PersistenceMetaData *)((byte *)inputData.GetUnsafeReadOnlyPtr() + persistenceState.ArrayIndex * sizePerEntity);
void *inputDataBytePtr = inputMetaDataPtr + 1; // + 1 because it's a PersistenceMetaData pointer
// Resize
int amountToCopy = inputMetaDataPtr->AmountFound;
untypedBufferAccessor.ResizeUninitialized(i, amountToCopy);
// Get (Possibly modified because of resize) ptr to buffer data
void *bufferDataPtr = untypedBufferAccessor.GetUnsafePtrAndLength(i, out int length);
Debug.Assert(length == amountToCopy);
// Write Data
UnsafeUtility.MemCpy(bufferDataPtr, inputDataBytePtr, elementSize * amountToCopy);
}
}
public static void Execute(NativeArray <byte> outputData, int maxElements, UnsafeUntypedBufferAccessor untypedBufferAccessor,
NativeArray <PersistenceState> persistenceStateArray)
{
int elementSize = untypedBufferAccessor.ElementSize;
int sizePerEntity = elementSize * maxElements + PersistenceMetaData.SizeOfStruct;
for (int i = 0; i < persistenceStateArray.Length; i++)
{
PersistenceState persistenceState = persistenceStateArray[i];
#if ENABLE_UNITY_COLLECTIONS_CHECKS
if (persistenceState.ArrayIndex >= outputData.Length / sizePerEntity)
{
throw new IndexOutOfRangeException("CopyBufferElementsToByteArray:: persistenceState.ArrayIndex seems to be out of range. Or the sizePerEntity is wrong.");
}
#endif
void *bufferDataPtr = untypedBufferAccessor.GetUnsafeReadOnlyPtrAndLength(i, out int length);;
PersistenceMetaData *outputMetaBytePtr = (PersistenceMetaData *)((byte *)outputData.GetUnsafePtr() + persistenceState.ArrayIndex * sizePerEntity);
void *outputDataBytePtr = outputMetaBytePtr + 1;
int amountToCopy = math.clamp(length, 0, maxElements);
// Diff
int diff = outputMetaBytePtr->AmountFound - amountToCopy;
diff |= UnsafeUtility.MemCmp(outputDataBytePtr, bufferDataPtr, amountToCopy * elementSize);
// Write Meta Data
*outputMetaBytePtr = new PersistenceMetaData(diff, (ushort)amountToCopy); // 1 branch in this constructor
// Write Data
UnsafeUtility.MemCpy(outputDataBytePtr, bufferDataPtr, elementSize * amountToCopy);
}
}
