Re: [AD] Use MMX to get fast

[aj <aj@xxxxxxxxxx>]

which graphics cards will this work for ?
allegro is a general purpose game library,  developing a specific piece of 
code for a developers machine is not good for the vast array of graphics 
cards the end user may have.


can you tell me which allegro drivers you were using..  full screen or 
windowed ?
i find it hard to believe your code could be 60% faster.
there will probably be a reason.


can you find the equivalent code in the allegro src tree and see if its 
similar.
/allegro/src/i386/iblit32s



> "on what platform ( DOS, WinNT,2kXP, Win9x, Linux )  is your routines 
> faster ?"
>
> My routine doesn't need an O.S., it could be assembled in anyone (I use my 
> own O.S.), it needs a 386 PC based, and the speed will be the same in any 
> O.S. But I compare to Allegro running on DOS, WinXP and Win98.
> My test is very simple, I have an animation with 180 pictures 800x600x32 
> (1.83MB), first I load all them to the memory (330MB) and I simple change 
> these pictures.  My system is Pentium III - 850Mhz - 768MB - Video 
> OnBoard. With my code I have 50fps and with allegro I have 30fps.
> And I certified that everything was in Memory (not virtual memory).
>
> I think it's very simple for you (allegro developers) to implement this 
> routine in Allegro (blitmmx for example) just to test, its implementation 
> is very similar to memcpy, but I use MM0 to move quadwords (8 bytes).