RWByteAddressBuffer.InterlockedAddI64¶

Description¶

Perform a 64-bit integer atomic add operation at byteAddress.

Signature¶

void RWByteAddressBuffer.InterlockedAddI64(
    uint byteAddress,
    int64_t valueToAdd,
    out int64_t originalValue);

void RWByteAddressBuffer.InterlockedAddI64(
    uint byteAddress,
    int64_t valueToAdd);

Parameters¶

byteAddress : uint¶

The address at which to perform the atomic add operation.

valueToAdd : int64_t¶

The value to add to the value at byteAddress.

originalValue : int64_t¶

The original value at byteAddress before the add operation.

Remarks¶

For SPIR-V, this function maps to OpAtomicAdd. For HLSL, this function translates to InterlockedAdd64 and requires shader model 6.6. For CUDA, this function maps to atomicAdd.

Availability and Requirements¶

Defined for the following targets:

hlsl¶

Available in all stages.

glsl¶

Available in all stages.

cuda¶

Available in all stages.

spirv¶

Available in all stages.

Requires capability: spvInt64Atomics.