PS2PSXe - cleaning the house

[flahrgenstow]

I believe in PS2PSXE

[doctorxyz]

I believe in PS2PSXE

"In ffgriever we trust"!!! :-D

[ffgriever]

Please, stop, because I'm starting to feel guilty :P.

I played recently some old psx games on my psx... Then played the same games a little bit on ps2 (just comparing some differences in behavior on these two with the emu). God, the dithering in psx games on ps2 (original unmodified psx emu on ps2) is soooooooo ugly. Can't stand it. It's waaaay better on real psx (no bilinear filtering though).

[luisoman2000]

Please, stop, because I'm starting to feel guilty :P.

I played recently some old psx games on my psx... Then played the same games a little bit on ps2 (just comparing some differences in behavior on these two with the emu). God, the dithering in psx games on ps2 (original unmodified psx emu on ps2) is soooooooo ugly. Can't stand it. It's waaaay better on real psx (no bilinear filtering though).

um...does this mean no psx emu on ps2?

[dlanor]

Please, stop, because I'm starting to feel guilty :P.

Don't feel that way about it.

Sure, we all want PS2PSXe to 'happen' some time, if at all possible.
But if you feel that you no longer have time or inspiration for it, that is fine too.

You've contributed more than most to this community anyway, so if anyone ever has the gall to really 'bitch' about failure to 'deliver' on your PS2PSXe plans, I think the moderators here would fight for the chance to be the one to ban that idiot...
(And since I am a moderator here myself, that banning definitely would happen,)

I played recently some old psx games on my psx... Then played the same games a little bit on ps2 (just comparing some differences in behavior on these two with the emu). God, the dithering in psx games on ps2 (original unmodified psx emu on ps2) is soooooooo ugly. Can't stand it. It's waaaay better on real psx (no bilinear filtering though).

I agree, for most cases a real PSX is much better than using a PS2 to play the game, and especially with a good PSX modchip (meaning a swap-free one, like I have) so that backups can be used instead of wearing out the originals.

But with a proper PS2PSXe release that relationship could change drastically, especially as this also allows an unmodded console to run PS1 games from backup media, even without using any disc at all. Playing games over LAN this way is not quite as convenient as with PS2 games in OPL of course, but it does work. (Though the current beta is limited in having no sound and slow speed.) So if it ever is completed I think a PS2 could become the preferred platform for playing PS1 games.

But I didn't intend to nag you about it here myself, so please don't take it that way.

I just wanted to clarify what a great job I think you've already done with it, making it a very worthwhile experience for me to have beta-tested it, even if it doesn't go any further...

Best regards: dlanor

[doctorxyz]

ffgriever,
I would like to register that my quoted sentence on previous post was spontaneous; anyway, if that made you feel guilt or bad in some way - even indirectly - then I'm so sorry for that, master!

dlanor,
In fact ffgriever has no obligation on doing nothing here; nobody has. For instance, he and you have already made a lot of cool things for free and certainly me and many others are grateful for that.

BR,

[ffgriever]

Now, guys, seriously... I wasn't really that serious about that - just note the emoticon. No need to apologise and such.

I'm not really a fan of emotes, so if I place one somewhere, it's there for a reason.

[doctorxyz]

So let's forgive this and go on with our lives... Each one contributing only when want and if want, making these contribution at your own pace.

Have a nice weekend,

[pssnake]

I am feeling bad because psx emulator is available on most of the platforms.
like windows,linux,mac,psp even on ipod touch but no emulator on ps2.

yes we can play ps1 games via it's optical drive of ps2 but now this days it's hard to find some psx title's on stores and it feels waste of time to burn discs for psx games.even i don't burn backups for my ps2 games. i play them directly using open ps2 loader. is it too hard to create a psx emulator for ps2.

i know it's not imposible. may be there are lack of good coders on ps2 homebrew.
because the ps2 is slowly going down people's are losing interest on ps2 homebrew. thanks to open ps2 loader it feels like there are still some people's who will keep the ps2 homebrew community alive.

ps2 hardware is capable to do lots of things.
i hope someday someone will make psx emulator before ps2 goes to R.I.P.
(sorry for my bad english)

[ffgriever]

Since I've recently reached another milestone, I thought it might be fine to post some pics. Not that it will do you any good, but I'm starting to feel kind of bad for being so quiet about the project. Don't expect too much, but I'll try to post some progress info and some pics from time to time (not on a regular basis, it's not the way I work on the emu - intensively for short periods, then longer breaks. Basically whenever I have a good idea that needs coding).

The HW gpu is almost ready. Many games show glitches (or even all they show are glitches), but some are already pretty playable.

There are some problems with textured sprites. They're always displayed perfectly if the PS2 screen size to PSX screen size ratio is an integer (1 or 2 actually). With others some black bars and such are displayed. It doesn't occur when the sprites are not filtered (filtering for sprites and textured polys can be configured by cmd switches). Fixing the way they're displayed for one game usually breaks few others... But it's a common problem with PSX emulators. The best way is to always use framebuffer size same as the one of PSX, but that would be weird. Except for a lot of unused VRAM (320x256 at 16 bit and texture caching code isn't used too much), it doesn't give any speed gain.

GPU doesn't support drawing outside of the screen buffers and drawing on the currently displayed buffer, but it will be added soon.

The screenshots are taken in 16bit mode, but the emu also supports 32bit framebuffer mode (for some games there is no difference in speed at all, in others it can be quite huge... It's not a matter of drawing itself, but of the fact, that it actually needs twice as much vram... the texture and clut caching code has to prepare/reupload the textures much more often).

In most of the cases, the CPU emulation is now the bottleneck, not the GPU as it was with the software GPU code.

Here some screenshots. 3D games look really nice (double the original resolution in both directions makes it look really nice, especially on TV). There is no texture correction done, but it's obvious, since the PSX GPU doesn't get any depth info (the displayed polygons are in fact flat, they have only x and y coordinates).

Oh, the dithering looks really poor on the screenshots, but it looks really nice on the TV. I guess I could take the screenshots again in 32bit mode, but I'd rather do something else. Next time I'll take screenshots in 32bit mode, so they will look much better.