Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Assigns value to dest and returns the original value.
Syntax
void InterlockedExchange(
in R dest,
in T value,
out T original_value
);
Parameters
-
dest [in]
-
Type: R
The destination address.
-
value [in]
-
Type: T
The input value.
-
original_value [out]
-
Type: T
The original value.
Return value
This function does not return a value.
Remarks
This operation can only be performed on scalar-typed resources and shared memory variables. There are two 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. This operation is only available when R is readable and writable.
Interlocked operations do not imply any memory fence/barrier.
Minimum Shader Model
This function is supported in the following shader models.
| Shader Model | Supported |
|---|---|
| Shader Model 5 and higher shader models | yes |
This function is supported in the following types of shaders:
| Vertex | Hull | Domain | Geometry | Pixel | Compute |
|---|---|---|---|---|---|
| x | x | x | x | x | x |
See also