Groovymame Projector setup

[Ravi_s]

Hi Guys,

I would like to setup groovymame using native 15khz resolutions on a projector. Is this possible ? I assume I would require a very old projector? Or I can get one of those led pico projectors with a native resolution of 320 x 240?

Thanks.

 

[ZedEx48K]

15k won't be a problem, most modern proj's still have low def inputs, you will always be rescaling to it's native resolution though.

 

[Ravi_s]

Thanks for your help.. I guess I will chance it on one of those Chinese pico led projectors .. I guess better to match or down scale to native 320 x240 then upscaling to native 720p. What do you think? Ravi_s2014-04-23 20:49:31

 

[ZedEx48K]

What screensize are you looking to achieve here (320 x240 res or not), cos once you get so big hz will probably be the least of your issues.

 

[Ravi_s]

My fav all time game street fighter II champion edition.. I think it runs at native res of 384 x 224 on my arcade cab.

 

[cools]

You dont want native res, trust me it will look horrendously pixelated.

2 years ago at a meet we had SSF2T on a supergun hooked up to my Epson TW10H and it looked astonishingly good. The screen door effect of having the LCD zoomed to max gave a striking CRT type image and there was no problematic lag.

 

[Ravi_s]

I was thinking trying to beam at close to native resolution as possible at about 50 inches.. This should look ok... Rather then stretching / scaling the image to native 720p.Ravi_s2014-04-24 08:50:12

 

[cools]

You're thinking backwards about this. On anything other than a CRT you want to be running at the display's native resolution rather than the games resolution - and then feed it a well scaled image.

Any projector has a native resolution. Your PC needs to be set to this native resolution, and then GroovyMAME needs to apply unfiltered integer stretching.

It's exactly the same thing you'd do with a flat screen display.

The only trouble is that SF2 doesn't have square pixels, so your image is going to appear flattened.

http://retrogaming.hazard-city.de/

 

[Ravi_s]

Thanks for the info.. I give a go on my existing projectors first O

 

[cools]

Good luck! In fact the higher resolution the projector the better, as you may be able to get away with scaling non-linearly without it affecting the image for non-square pixel games. It's the scaler that's the key

 

[Ravi_s]

Just a quick update .. Tried mame on my Optoma 720p... Beaming at about 110 inches..I switched on HLSL - changed with various setting to do with scanlines and turned off bi-linear setting.. To get rid of the blur... so the picture was so razor sharp. The end result was simply amazing! The picture was very similar to my CRT. I felt like I was playing street fighter 2 on a massive arcade cabinet with crisp picture complete with scanlines. I am temped to dump my cab... I think LCD / projector may well be the future for mame, provided you have a decent i5, i7 PC. Ravi_s2014-04-27 16:27:31

 

[ZedEx48K]

Well since I have a proj and an OC i7 I think that's me sorted

I did use to play mame out on the proj but the reality is you need to have a good couple of hours session to be viable, it's not great on the bulbs over time to have a quick go here or there turning it on and off.