Exchanges a value, atomically.
void InterlockedExchange( in UINT dest, in UINT value, out UINT original_value );
- dest [in]
The destination address.
- value [in]
The input value.
- original_value [out]
The original value.
This function does not return a value.
This operation can only be performed on scalar-typed resources and shared memory variables. There are three possible uses for this function. The first is when R is a shared memory variable type. In this case, the function performs the operation on the shared memory register referenced by dest. The second scenario is when R is a resource variable type. In this scenario, the function performs the operation on the resource location referenced by dest. Finally, the third scenario is when R is a local variable type. In this scenario, the function reduces to the operation performed using local operations. This operation is only available when R is readable and writable.
This function is supported in the following types of shaders: