[AD] Use MMX to get fast

["RogerioUP" <rogerup@xxxxxxxxxx>]

Thanks for all.

Now I see a code similar to my code in "iblit16.s"

FUNC(_linear_blit16)        // MMX - blit longs64

 

I use this code in 1999 to get 24fps (800x600x32) in a Pentium I - MMX, and to get this rate I had to improve my routine, I repeated the central block 8 times.

 

            mov      ecx,(num of bytes) / 64

    loopq:

 

            ;

            ; this code 8 times

            ;

            movq    MM0,[esi]                        ; esi = source index

            movq    [edi],MM0                        ; edi = destination index

            add      esi,8

            add      edi,8

            ;

            ;

            ;

 

             sub      ecx,8

             jnz       loopq

 

 

best Regards, Rogerio Uchoas Penchel

 

rogerup@xxxxxxxxxx