sgn - vs
Microsoft DirectX 9.0 SDK Update (October 2004)

sgn - vs


Computes the sign of the input.

Syntax

sgn dst, src0, src1, src2

where

Remarks

Vertex shader versions1_12_02_x2_sw3_03_sw
sgnxxxxx

This instruction works as shown below.

for each component in src0
{
   if (src0.component <  0) 
       dest.component = -1; 
   else
       if (src0.component == 0) 
           dest.component = 0; 
       else 
           dest.component = 1;
}

src1 and src2 must be different Temporary Registers.



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