GroovyMAME for Mac OS X

[betelgeuse]

Is there such a thing?

If not, are you familiar with another MAME fork that has the input delay fix for OS X?

A while ago I visited a thread on Tetrisconcept by a dude that was trying to build a shmupmame version for Linux, and he eventually succeeded. I followed in his footsteps and after a while I was able to build one for OS X as well, but its performance was terrible and I couldn't figure out why. I dropped it out of frustration.

I'd be eternally grateful to anyone who's able to help me out. Tetris: The Grandmaster 2 is a serious hit and miss without the input lag fix.

Thank you!

[donluca]

A good question here would actually be: is it possible to have 15Khz output on Mac OS X when using an external monitor?

[Paradroid]

Just get yourself a cheap Wintel box and join the party! It's a niche hobby already... adding OSX to the requirements list just narrows the range of potential users and contributors even more. Why bother trying to find OSX solutions for all the quirks that people have worked so hard to overcome in Windows? Even if you despise Windows you won't be looking at it when you're actually playing a game. 

Sent from my SM-A300Y using Tapatalk

[philexile]

I second that! I'm a graphic designer and use Macs for work – but they definitely aren't suited for this sort of project. Once you get past the whole driver thing (which isn't THAT bad), Windows isn't half bad.

[betelgeuse]

There's a working OSX version for MAME called SDLMAME which is updated as soon as new MAME versions come out. I use that for playing Tetris: The Grandmaster, but it doesn't have the input delay fix.

I don't actually care about an external monitor honestly, I just use my macbook for playing Tetris. But after trying on a friend's Windows machine the game with the input lag fix - I was hooked.

I was able with lots of pains to compile my own shmupmame version with the fix, but it was working terribly and I couldn't figure out why...

And trust me if I could easily get my hands on a decent Windows/Linux machine right now I wouldn't be starting this thread.

If there's nothing to be done then oh well..

[Calamity]

Although the frame_delay feature is cross-platform, the whole input lag fix in GroovyMAME depends on the specific OS implementation, instead of hacking the emulation layer.

A low-latency implementation should start with using a native input API, such as RawInput of DirectInput in Windows, instead of relying on a wrapper library whenever possible.

Then, you need to target the frame queues at the driver level.

Finally, you need to make sure that the os is not adding latency by some sort of desktop compositing.

You need a decent understanding of the target system in order to achieve this, and I'm afraid it's not my case with OS X.

[betelgeuse]

Although the frame_delay feature is cross-platform, the whole input lag fix in GroovyMAME depends on the specific OS implementation, instead of hacking the emulation layer.

A low-latency implementation should start with using a native input API, such as RawInput of DirectInput in Windows, instead of relying on a wrapper library whenever possible.

Then, you need to target the frame queues at the driver level.

Finally, you need to make sure that the os is not adding latency by some sort of desktop compositing.

You need a decent understanding of the target system in order to achieve this, and I'm afraid it's not my case with OS X.

Thanks, I appreciate your input (pun unintended).

It was worth a shot.