Mesa 6.4 Slight Better Speed

[urielka]

i built Mesa 6.4 with -O3 -mcpu=iwmmxt -mtune=iwmmxt to get it going faster and it runs faster from my tests:
from 16.5FPS to 18FPS @416MHZ in glxgears
from 26FPS to 28FPS @624MHZ in glxgears

there some demos on the build also.
Sash:about the pcsx build that is on the feed,does it build with my patches? coz it is slow by 2-3 fps that my build!

one thing i realy pissed is that we have such poor 3d preformence with ur Zaurus.
i searched for a software-render OpenGL such as mesa with integer instead of floats but i didn`t find one.
if you look at PPC they get such a good speed.
i compiled foobillard with OpenGL and it runs for 3-5FPS(estimate) realy slow.

[sashz]

i built Mesa 6.4 with -O3 -mcpu=iwmmxt -mtune=iwmmxt to get it going faster and it runs faster from my tests:
from 16.5FPS to 18FPS @416MHZ in glxgears
from 26FPS to 28FPS @624MHZ in glxgears

there some demos on the build also.
Sash:about the pcsx build that is on the feed,does it build with my patches? coz it is slow by 2-3 fps that my build!

one thing i realy pissed is that we have such poor 3d preformence with ur Zaurus.
i searched for a software-render OpenGL such as mesa with integer instead of floats but i didn`t find one.
if you look at PPC they get such a good speed.
i compiled foobillard with OpenGL and it runs for 3-5FPS(estimate) realy slow.
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where is your patches?
i added but not tested it

[urielka]

so how did you build it? my patches aren`t for boost but are for building it but they also make it faster.
patches here.
it runs damn slow just 6-8FPS(your build) and 8-11FPS(my build).
something else that could build is Visual Boy that run as slow as 50-60%@624MHZ.

[sashz]

i will post them later.
so how did you build it? my patches aren`t for boost but are for building it but they also make it faster.
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i added pcsx to builder, so it will building every new release automatic

[urielka]

i mean ,how did it build it coz you need to hack the makefiles and some files to get it build.
and check my patches

[Da_Blitz]

hacking around in the floating point emulation should speed things up, not sure if gcc supports autovactorisateion for the iwmmx but i am trying to find out at the moment

[urielka]

only with gcc 4.0.(because of that Apple use 4.0 for VMX(aka Altivec) optimz).
the better thing i planing to do is write a arm dynamic recompiler so we will have alot of speed boost i think about 25-30FPS which will be damn good.
think about this: Fifa 2003(or sooner) on the Z just amazing.
tekken 3,Gta2 and all the good thigs

[lardman]

arm dynamic recompiler

Sounds cool - is this the kind of thing which profiles itself then recompiles to make the parts which are run the most run the fastest?


Si

[Da_Blitz]

i thoght that gcc had that built in, you just had to do multiple passes, the thing i wonder about fir autovectorisation is does gcc have support for it or only mmx/sse/altivec

i thing the speed boost from vectorising the floating point rouitnes would be better than dynamic recompalation scince thats the area thats cauising the most performance degerdation

[lardman]

i thoght that gcc had that built in, you just had to do multiple passes

Yes, but one of those passes has to be performed on the machine.

the thing i wonder about fir autovectorisation is does gcc have support for it or only mmx/sse/altivec

Although vfp has vector support, I thought that this was only for hardware floating point units? I'd assumed that as it's emulated there would be no difference (or can the emulation perform vector calculations somehow?).


Si

[koen]

this thread has quite some info about vfp: http://maemo.org/pipermail/maemo-developer...ber/001602.html

[urielka]

a interpter core runs a lot slower than dynamic recompiler so building one will be the best option

[Da_Blitz]

thanks for the link to the mailing list, i would be intrested to see how much of an improvment we could get, i might even do some iwmmx asm if i feel there is a good performance boost, i am planning to conver the mmx AES routines to iwmmx so mabey after that

[Da_Blitz]

just a note, iwmmx includes all integer SSE stuff, so its actually a superset of your standard mmx, i dont know how this effects the code but i assume this would allow for some instructions that would take longer to do in pure mmx