Subtracts the secondly provided vector2 from the first.
If an output vector is provided, the resulting vector of the subtraction is stored to that and it is also returned; if the output parameter
is omitted, a temporary vector is created and returned.
Take note that temporary vectors are automatically deleted at the next call to DX11 SYNC. If you will need the resulting
vector for longer than that, you should use DX11 CREATE VECTOR2 to create one and then use that as the output parameter to this function.

Return Dword = DX11 SUBTRACT VECTOR2(vectorA, vectorB, [resultVector])

vectorA

Dword
The vector2 to subtract the other from.

vectorB

Dword
The vector2 to subtract from the first.

[Optional] resultVector

Dword
The resulting vector will be stored here; this may be the same as one of the source vector if you like. Omit to create and return a temporary vector holding the result.

The resultVector, if one was provided, or the temporary vector created to hold the result otherwise. This approach allows you to chain multiple vector / matrix math functions.

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