msad4

Description

Masked sum of absolute differences of byte alignments. This function computes the absolute differences of the byte alignments of the reference and source values, and adds them to the accumulated differences.

Signature

vector<uint, 4> msad4(
    uint reference,
    vector<uint, 2> source,
    vector<uint, 4> accum);

Parameters

reference : uint

The reference 4 bytes packed in a uint.

source : vector<uint, 2>

The source 2 uints packed in a uint2.

accum : vector<uint, 4>

The accumulated differences.

Return value

The updated accumulated differences.

Remarks

In HLSL, this is implemented with the msad4 intrinsic.

Availability and Requirements

Defined for the following targets:

hlsl

Available in all stages.

glsl

Available in all stages.

cpp

Available in all stages.

cuda

Available in all stages.

spirv

Available in all stages.