Unity dots IJobParallelFor并行的数据写入问题

Unity dots IJobParallelFor并行的数据写入问题

[BurstCompile]  
public struct IncrementJob : IJobParallelFor  
{  [ReadOnly] public NativeArray<int> baseValues;  public NativeArray<int> resultValues;   public void Execute(int index)  {resultValues[index+1]=5;}
}

上面的写法会报ReadWriteBuffers are restricted to only read & write the element at the job index错误，这是出于性能和线程安全的考虑，Unity Job System限制了每个Job只能访问或修改由Job索引指定的单个元素,因此这里非index索引下的数据写入收到了限制。

解决方案一

对于接触限制的数据加入NativeDisableParallelForRestriction

[BurstCompile]  
public struct IncrementJob : IJobParallelFor  
{  [ReadOnly] public NativeArray<int> baseValues;  [NativeDisableParallelForRestriction] public NativeArray<int> resultValues;   public void Execute(int index)  {resultValues[index+1]=5;}
}

解决方案二

只访问index索引下的数据

[BurstCompile]  
public struct IncrementJob : IJobParallelFor  
{  [ReadOnly] public NativeArray<int> baseValues;  public NativeArray<int> resultValues;   public void Execute(int index)  {resultValues[index]=5;}
}