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Author Topic: San Francisco Rush: The Rock running @60fps in MAME  (Read 254 times)

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Bigtymer781

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San Francisco Rush: The Rock running @60fps in MAME
« on: October 09, 2018, 08:00:57 pm »
I was messing around yesterday with the overclock slider controls in MAME and I noticed that if you increase the 'Screen Refresh Rate' the frames per second would actually increase slightly in Rush. When I put the refresh rate to the max value (67fps), Rush would top out at 34fps instead of 30, which is exactly half. So then I went into the MAME 0.199 source code and changed the max value to 120 to see if the game would then run at 60fps, and sure enough it did!

I was already using a custom MAME 0.199 build that had the main CPU for Rush (r5000) overclocked to get a frame rate boost, but the game would top out at 30fps. So then I started overclocking even more to try and get a solid 60fps. With the r5000 @600mhz (the default speed is 200mhz) I'm averaging 40-60fps. It's a pretty massive FPS increase over the default MAME, which goes as low as 15fps and probably averages 20-25fps.

It can be overclocked even more, but the higher the overclock the more demanding it is on your PC.

If anyone is interested here's a download link to the custom MAME 0.199 build...
https://www43.zippyshare.com/v/PDtDNsSY/file.html

When the game first starts you have to go into the slider controls menu (with cheats enabled) and set the 'Screen Refresh Rate' to 120fps.




Here's a video...
https://www.youtube.com/watch?v=fJ1EMZkLZTY


« Last Edit: October 10, 2018, 01:50:02 am by Bigtymer781 »

DarthMarino

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Re: San Francisco Rush The Rock running @60fps in MAME
« Reply #1 on: October 09, 2018, 10:26:20 pm »
Thanks for sharing. It's working great.  Hopefully the force feedback can be modified to work with this version and we'll have the ultimate version.

Bigtymer781

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Re: San Francisco Rush The Rock running @60fps in MAME
« Reply #2 on: October 09, 2018, 10:34:32 pm »
Thanks for sharing. It's working great.  Hopefully the force feedback can be modified to work with this version and we'll have the ultimate version.
Yeah that would be great.

Here's 2 other versions that may work better or worse for some people based on their PC. The original link is r5000 @600mhz.

r5000 @400mhz...
https://www93.zippyshare.com/v/q6jOqzk9/file.html

r5000 @600mhz (original link)...
https://www43.zippyshare.com/v/PDtDNsSY/file.html

r5000 @1000mhz...
https://www53.zippyshare.com/v/U1YxGGQT/file.html

bandicoot

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Re: San Francisco Rush: The Rock running @60fps in MAME
« Reply #3 on: October 10, 2018, 11:23:07 am »
Do you think it's possible to make somthing like that on GTI CLUB i think it's a similare problem

Bigtymer781

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Re: San Francisco Rush: The Rock running @60fps in MAME
« Reply #4 on: October 10, 2018, 09:34:18 pm »
Do you think it's possible to make somthing like that on GTI CLUB i think it's a similare problem
Is the game capped at 30fps? Maybe I could take a look at it sometime.

Here's some benchmarks I did today with fraps, they aren't very scientific because I couldn't figure out how to record input then playback input with MAME 0.199. During playback the inputs were out of sync, so I just played through the track four separate times for the benchmarks. Does anyone know if record/playback input is broken in the newer Mame versions?

Track 4 (Extreme Car) Benchmarks:

2018-10-10 15:29:22 - mame64 (200mhz @30 default mame)
Frames: 5639 - Time: 248416ms - Avg: 22.700 - Min: 15 - Max: 32

2018-10-10 18:17:44 - mame64 (400mhz @60)
Frames: 9874 - Time: 239259ms - Avg: 41.269 - Min: 30 - Max: 61

2018-10-10 18:04:29 - mame64 (600mhz @60)
Frames: 10945 - Time: 249789ms - Avg: 43.817 - Min: 30 - Max: 61

2018-10-10 18:11:14 - mame64 (1000mhz @60)
Frames: 11956 - Time: 244189ms - Avg: 48.962 - Min: 30 - Max: 61

These benchmarks were ran on an i7 8086k, and the emulation speed was locked on 100%.


« Last Edit: October 10, 2018, 09:39:10 pm by Bigtymer781 »

Howard_Casto

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Re: San Francisco Rush: The Rock running @60fps in MAME
« Reply #5 on: October 10, 2018, 11:44:12 pm »
Yeah there are a few games with issues, like the crusin' series.  Might be worth looking into. 

  
 

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