RWByteAddressBuffer.InterlockedCompareExchangeFloatBitwise

Description

Perform a floating-point atomic bitwise compare-and-exchange operation at byteAddress.

Signature

void RWByteAddressBuffer.InterlockedCompareExchangeFloatBitwise(
    uint byteAddress,
    float compareValue,
    float value,
    out float outOriginalValue);

Parameters

byteAddress : uint

The address at which to perform the atomic exchange operation.

compareValue : float

The value to compare to the value at byteAddress.

value : float

The value to store at byteAddress.

outOriginalValue : float

[out] The original value at byteAddress before the exchange operation.

Remarks

For SPIR-V, this function maps to OpAtomicCompareExchange. For HLSL, this function translates to InterlockedCompareExchangeFloatBitwise and requires shader model 6.6. For CUDA, this function maps to atomicCAS.

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.