dp3 - vs

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


dp3 dst, src0, src1



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


Vertex shader versions 1_1 2_0 2_x 2_sw 3_0 3_sw
dp3 x x x x x x


The following code fragment shows the operations performed:

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

Vertex Shader Instructions