dp4 - ps
Microsoft DirectX 9.0 SDK Update (October 2004)

dp4 - ps


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

Syntax

dp4 dst, src0, src1

where

Remarks

Pixel shader versions1_11_21_31_42_02_x2_sw3_03_sw
dp4xxxxxxxx

The following code snippet shows the operations performed:

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

Limitations for ps_1_2 and ps_1_3:

Limitations for 1_X versions:



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