Author Topic: Picodrive OD with optimizations (Read 42771 times)

Rosenkranz · « **Reply #20 on:** January 11, 2012, 11:54:27 pm »

Thank you! It really is much faster

. I only have problems with sound. In Mortal Kombat 2 and 1 i have music in the menu but when the fight starts there is no sound. And in MK1 i have glitching background. I had problems with disappearing sound in some other games, but i think that is a problem with my Open Dingux.

flpstrquerendoumdingoo!!! · « **Reply #21 on:** January 12, 2012, 04:08:58 pm »

Hi results of these optimizations are cflags?

ValdikSS · « **Reply #22 on:** January 12, 2012, 06:35:50 pm »

Quote from: flpstrquerendoumdingoo!!! on January 12, 2012, 04:08:58 pm

Hi results of these optimizations are cflags?

Yes, and profiling.

flpstrquerendoumdingoo!!! · « **Reply #23 on:** January 12, 2012, 07:19:09 pm »

I could cite the new cflags? I'm doing tests with other emulators, but with the cflags I used did not increase much.
Thanks

ValdikSS · « **Reply #24 on:** January 12, 2012, 07:24:02 pm »

Quote from: flpstrquerendoumdingoo!!! on January 12, 2012, 07:19:09 pm

I could cite the new cflags? I'm doing tests with other emulators, but with the cflags I used did not increase much.
Thanks

I used
-O3 -march=mips32 -mtune=mips32r2 -fomit-frame-pointer -fsigned-char -ffast-math -G0 -mno-mips16 -pipe \
-falign-functions -falign-loops -falign-labels -falign-jumps -fexpensive-optimizations \
-fsingle-precision-constant -finline -finline-functions -fstrict-aliasing \
-fno-strength-reduce -funsafe-math-optimizations -mbranch-likely -funroll-loops \
-fprofile-use

But that's overkill. Probably you have to use

-O3 -ffast-math -march=mips32 -mtune=mips32r2 \
-G0 -mno-mips16 -fno-inline \
-fno-strength-reduce -fsingle-precision-constant -fsigned-char

Take a look at -fprofile-generate and -fprofile-use. First, compile with -fprofile-generate. Then run it on device with GCOV_PREFIX set somewhere on SD. Play some games(better to play minimum 2 different games), change some settings, just like you benchmarking it. Then you'll get some files in your GCOV_PREFIX. Copy it to your sources dir and build with -fprofile-use

flpstrquerendoumdingoo!!! · « **Reply #25 on:** January 12, 2012, 07:32:57 pm »

Thank you! I'm using these cflags, I'm actually exaggerating and using a lot more, thanks again and keep up the good work!

pcercuei · « **Reply #26 on:** January 12, 2012, 07:51:00 pm »

Quote from: flpstrquerendoumdingoo!!! on January 12, 2012, 07:32:57 pm

Thank you! I'm using these cflags, I'm actually exaggerating and using a lot more, thanks again and keep up the good work!

Beware, more 'optimization' flags won't necessarily result in a better performance. Some games / emus actually run better when compiled with -O2 rather than -O3, for instance.

Rosenkranz · « **Reply #27 on:** January 12, 2012, 09:14:09 pm »

Is anyone else experiencing cracking in sound when using Picodrive?

pcercuei · « **Reply #28 on:** January 22, 2012, 04:00:26 pm »

Quote from: CREATICA on January 11, 2012, 11:20:18 am

It's normal, mate. Picodrive in OD has been always slower than Legacy.

This is going to change. Really soon.

ValdikSS · « **Reply #29 on:** January 22, 2012, 08:42:52 pm »

Quote from: Ayla on January 22, 2012, 04:00:26 pm

Quote from: CREATICA on January 11, 2012, 11:20:18 am
It's normal, mate. Picodrive in OD has been always slower than Legacy.

This is going to change. Really soon.

Well, it's already changed

pcercuei · « **Reply #30 on:** January 22, 2012, 08:57:06 pm »

Not with the developer v2. version of OpenDingux

Cruz · « **Reply #31 on:** January 24, 2012, 11:37:01 am »

Hey, does picodrive run sega mega cd or 32x games?

CREATICA · « **Reply #32 on:** January 28, 2012, 10:27:30 am »

Quote from: Cruz on January 24, 2012, 11:37:01 am

Hey, does picodrive run sega mega cd or 32x games?

Actually, the question would be like this: now that Genesis emulation is nearly flawless (in Legacy of course), would it be possible to have 32x games emulation on Dingoo?

Cruz · « **Reply #33 on:** January 28, 2012, 12:58:21 pm »

Got answered, thanks.

But yours is a trully pertinent question xD

dmitry_smagin · « **Reply #34 on:** February 26, 2012, 06:11:24 pm »

ValdikSS,
did you post somewhere modified sources of Picodrive? I'd like to see the changes you've made to make Picodrive work on OD. Your help is appreciated, thanks.

ValdikSS · « **Reply #35 on:** February 26, 2012, 06:36:05 pm »

Quote from: d_smagin on February 26, 2012, 06:11:24 pm

ValdikSS,
did you post somewhere modified sources of Picodrive? I'd like to see the changes you've made to make Picodrive work on OD. Your help is appreciated, thanks.

I didn't modify the sources, just compilation flags.

pcercuei · « **Reply #36 on:** February 26, 2012, 11:17:37 pm »

There is a diff inside the tarball released here, which should be applied on the sources of the initial build (those are available on openhandhelds).

ValdikSS · « **Reply #37 on:** May 27, 2012, 11:37:35 pm »

v3 OD update.
Used latest Ayla's patch which adds double buffering and vsync for OD and recompiled with -mtune=xlr.
Vsync will work only on the latest OD kernel with vsync patch
http://valdikss.org.ru/PicoDrive.dge

K-77 · « **Reply #38 on:** May 28, 2012, 07:30:45 pm »

water reflection (thanks for a hint

) on one of NativeOS emu.

And water reflection on OD Picodrive.

Excellent speed on both cause Castlevania Bloodlines is not so demanding game.

benmerrick3d · « **Reply #39 on:** May 29, 2012, 09:24:52 am »

Hey,

I think I know the answer is no, but is there any way to get this working on native firmware on the A380? The emulator on there is soo slow and we are having problems trying to open the back of the A380 to be able to put a new card in =(

We have got it open now, but cannot get the Picodrive working on the A380 yet =/

Author Topic: Picodrive OD with optimizations (Read 42771 times)

ValdikSS (OP)

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