Motorola DSP96002 - Manual (Page 609)

B-90 DSP96002 USER’S MANUAL MOTOROLA
; Multiply coordinates by 1/W, scale and add offset
fmpy.s d0,d4,d2 ; 1 1
fmpy.s d2,d1,d2 x:(r4)+,d4.s y:,d6.s ;Ys Yf 1 1
fmpy d5,d4,d3 fadd.s d3,d2 ; 1 1
fmpy.s d3,d1,d3 d2.s,y:(r5)+ ; 1 1
fadd.s d6,d3 x:(r0)+,d0.s ; 1 1
dec d7 d3.s,y:(r5)+ ; Y1 1 1
;---------------------------------------------------------
;
; Accept loop
;
;---------------------------------------------------------
; Transform point to clip space
_accept_loop
move x:(r0)+,d5.s y:(r4)+,d4.s ;Y M11 1 1
fmpy.s d4,d0,d2 x:(r4)+,d3.s y:,d4.s ;M41 M21 1 1
fmpy d4,d5,d3 fadd.s d3,d2 x:(r0)+,d6.s y:(r4)+,d4.s ;Z M31 1 1
fmpy d4,d6,d3 fadd.s d3,d2 y:(r4)+,d4.s ; M12 1 1
fmpy d4,d0,d1 fadd.s d3,d2 x:(r4)+,d3.s y:,d4.s ;M42,M22 1 1
fmpy d4,d5,d3 fadd.s d3,d1 y:(r4)+,d4.s ; M32 1 1
fmpy d4,d6,d3 fadd.s d3,d1 d2.s,x:(r1)+ y:(r4)+,d4.s ;Xn M13 1 1
fmpy d4,d0,d2 fadd.s d3,d1 x:(r4)+,d3.s y:,d4.s ;M43 M23 1 1
fmpy d4,d5,d3 fadd.s d3,d2 y:(r4)+,d4.s ; M33 1 1
fmpy d4,d6,d3 fadd.s d3,d2 d1.s,x:(r1)- y:(r4)+,d4.s ;Yn M14 1 1
fmpy d4,d0,d1 fadd.s d3,d2 x:(r4)+,d3.s y:,d4.s ;M44 M24 1 1
fmpy d4,d5,d3 fadd.s d3,d1 y:(r4)+,d4.s ; M34 1 1
fmpy d4,d6,d3 fadd.s d3,d1 d2.s,y:(r1) ; Zn 1 1
fadd.s d3,d1 x:(r1)+,d0.s ;Xn 1 1