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GroovyMame with secondary LCD for Active Marquees...is this optimal?

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electricd:
Thanks all for all the feedback and advice.  I think I will focus on bringing my old cab back from the dead using GroovyMame and the new display driver before focusing any attention or cash on the active marquee. 

pakoman:
I's suggest to do some tests with an old spare LCD before buying the real thing?

2huwman:
I've spent a few hours trying to make this work, and it's much more difficult than I expected! I'm using win7 and crtemudriver with an HD4350. The DVI on the GPU goes to the CRT and the HDMI on the GPU goes to the LCD. I'm using attractmode as the front end and @haynor666's groovymame build.

I tried using mame to output to the secondary monitor first. This works, but makes groovymame stutter badly on the CRT, and the sound is all 'wobbly'.

Then I tried using attractmode to handle the secondary monitor. This works fine in attractmode, but the artwork on the secondary monitor disappears when I start a game! I read that this was due to a conflict between mame and attractmode, and a suggestion was to make mame use opengl rather than d3d. So I changed my mame.ini settings to use opengl, and this did work - the artwork remains on the secondary monitor while the game plays on the CRT. The only problem is that switchres is no longer active, so all games are in 480i on the CRT!

So my question is - can groovymame use opengl with switchres working properly? If so, how do I set this up in my ini file?

I like the idea about using a pi to run the secondary monitor, as this would remove all the conflicts.

2huwman:
Nevermind, I got it to work with mame hooker.

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