Microsoft DirectX 8.0 (C++)

add

Adds sources.

add   vDest, vSrc0, vSrc1

Registers

vDest
Destination register, holding the result of the operation.
vSrc0
Source register, specifying the input argument.
vSrc1
Source register, specifying the input argument.

Operation

The following code fragment shows the operations performed by the add instruction to write a result to the destination.

    SetDestReg();
    SetSrcReg(0);
    SetSrcReg(1);

    m_TmpReg.x = m_Source[0].x + m_Source[1].x;
    m_TmpReg.y = m_Source[0].y + m_Source[1].y;
    m_TmpReg.z = m_Source[0].z + m_Source[1].z;
    m_TmpReg.w = m_Source[0].w + m_Source[1].w;

    WriteResult();

Remarks

The following examples illustrate how the add instruction might be used.

add r0, v0,c2
add r1.xyz, r0.xyz, v1.xyz