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libretro / snes9x2010

Snes9x 2010. Port of Snes9x 1.52+ to Libretro (previously called SNES9x Next). Rewritten in C and several optimizations and speedhacks.
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Star Fox 2 final runs slow #98

Closed lostless closed 6 years ago

lostless commented 6 years ago

I’m going say this is a issue but non issue as this only applies to low power devices like the pi. The beta runs perfect on a pi3 in snes9x2010 but the final build runs with some slowdown. I don’t know if there were some optimization that made the beta run optimally that are not being picked up when loading the final build. If not and this is just the way it is that’s fine

LodanZark commented 6 years ago

You can try change the overclock settings to see if it improves the experience: https://github.com/libretro/snes9x2010/blob/77e2c9822bc538045cbf6fcdd71fc31152654b3c/libretro/libretro.c#L372

lostless commented 6 years ago

didn't make any difference. The audio is still choppy and gameplay is a tad slow. The rom runs fine on my computer and It's the only game that has issues with the pi. The final beta ran fine and if the Pi can't run it at full speed, then so be it. Thats why I say its a non issue, its not a problem with the emulator itself but a optimization issue with a lower power device.

LodanZark commented 6 years ago

I tested in the RPi3 and works fine with 80MHz overclock. which model you're using ?

lostless commented 6 years ago

Im using a Pi3, not overclocked. The super fx overclock setting seems to make no difference to me. The game runs fine, just has slowdown. Listen to how the audio chops up in the intro. If you're running the old beta, it runs fine without issue. Im talking about the final build from the snes classic, which makes me think (and may be wrong) that there was some optimization done to the beta rom that is not being used when running the final build. They can't be that different, can they?

dankcushions commented 6 years ago

yoshi's island (another super fx 2 game) also slows down on a pi3 on later levels. it's just more than the pi's very weak CPU can handle.

nikkoman commented 6 years ago

It's not related to Pi's CPU. The beta hack (which is extremely close to what Nintendo revealed as final in the new ROM) runs fine. The newly extracted ROM plays sluggishly with lots of sound "pops" from the beginning. In my opinion, the emulator has not been optimised for the ROM, since we're talking about a new title.

Oggom commented 6 years ago

https://github.com/libretro/snes9x2010/pull/100 should fix this. The SNES Classic version has a different header than the beta and therefore the speed hack wasn't being applied.

lostless commented 6 years ago

Tested. Fixed Thank you