dp4 (Vertex Shader)

Computes the four-component dot product of the source registers.

Syntax

where

• dst is the destination register.
• src0 is a source register.
• src1 is a source register.

Remarks

The following code fragment shows the operations performed:

dest.w = (src0.x * src1.x) + (src0.y * src1.y) + 
         (src0.z * src1.z) + (src0.w * src1.w);
dest.x = dest.y = dest.z = unused;

Instruction Information