Hey Michael,
I did look at your article and what I can see, correct me if I am
wrong, is that you are calling the function from as3 to alchemy
xxxxxxx times.
while(i<1000000){
dd=lib.InvSqrt(1245);
++i;
}
That would explain why it is slow, that's something we try to avoid
with Bullet (a good example is to look how the transforms are done).
On Apr 26, 12:03 pm, Michael Iv <[email protected]> wrote:
> Sorry guys I am not sure I am right but I can't see any awesome performance
> here.In my browser Firefox 4 it runs around 25-30 fps when I start firing
> the balls.
> Also would like to note that Alchemy bridge is not always faster contrary to
> what people may think.I made a benchmark of square root algorithms
> calculations in Flash a couple of months ago.You can read about it
> here:http://blog.alladvanced.net/2011/02/21/square-root-calculation-speed-...
> basically I tried the built in Math.sqrt ,Fast Inverse square root
> algorithm developed by ID for quake (in AS) and the same Fast Inverse Square
> root but in C in Alchemy .To my great surprise the result was that the
> alchemy version was the slowest.Several times slower than the Native Flash
> implementation. BTW the fastest was HaXE implementation of the FISR
> Would be happy to hear some thought on this
> Michael.
>
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> On Tue, Apr 26, 2011 at 3:02 AM, Choons <[email protected]> wrote:
> > yeah Flash's garbage collector is the real Achilles' heel for
> > Molehill. I think the Flash developer's are quite aware of it, but any
> > kind of real 3D game needs better low level control of memory. This
> > looks like a great step in the right direction
>
> > On Apr 25, 4:53 pm, Jesse Nicholson <[email protected]>
> > wrote:
> > > That is pure awesome guys. I can't say how much I'll be able to
> > > contribute (because of time etc) but I'll check out the source, build/
> > > test etc and if I can do anything I'll let you know. This is great
> > > thanks for sharing! And Yes Choons alchemy CAN be faster as it uses
> > > LLVM to perform code optimization, which is extremely good at
> > > optimization because of the type of compilation it does. However there
> > > can be times where the performance is actually slower or just plain
> > > equal to pure as3. The biggest benefit with alchemy code is that it
> > > gives you the ability to bypass the garbage collector in flash all
> > > together, which is automatic and sluggish, by providing you with an
> > > interface to the raw system memory via a ByteArray object. And yes it
> > > would use alchemy pretty much throughout because Bullet is a C++
> > > library. Anyway very cool thanks a lot for sharing Ringo!
>
> --
> Michael Ivanov ,Programmer
> Neurotech Solutions Ltd.
> Flex|Air |3D|Unity|www.neurotechresearch.comhttp://blog.alladvanced.net
> Tel:054-4962254
> [email protected]
> [email protected]
