Microsoft DirectX 8.0 (Visual Basic)

mul

Multiply sources into the destination.

mul   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 mul 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 example illustrates how the mul instruction might be used.

mul r4, v0, r1