1 Reply Latest reply on Jul 14, 2011 7:19 PM by divij

    [solved]dot() geometric built in function

    divij
      Using dot() built in function

      Hey all,

      I am currently using dot function as follows: (Code 1)

      But I want to calculate sum0 in one go, e.g. (Code 2)

       

      Code two isn't working the way I want it. Any ideas as to how to calculate sum0 in one statement itself?

      Thanks.

      Code1: float4 sum0,a0,b1,b2,b3,b4; for(int =0;i<10;i++){ sum0.x+=dot(a0,b0); sum0.y+=dot(a0,b1); sum0.z+=dot(a0,b2); sum0.w+=dot(a0,b3); } code2: float4 sum0,a0,b1,b2,b3,b4; for(int =0;i<10;i++){ sum0+=(dot(a0,b0),dot(a0,b1),dot(a0,b2),dot(a0,b3)); }