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Interesting article on making LCDs look like fuzzy CRTs

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RayB:


--- Quote from: Ummon on May 10, 2009, 05:28:28 pm ---Mm-mmm-mmmm. I guess we'll have to visit each other's houses.

--- End quote ---
That sounds like a threat!
 :P

Ummon:


--- Quote from: RayB on May 11, 2009, 09:50:50 am ---
--- Quote from: Ummon on May 10, 2009, 05:28:28 pm ---Mm-mmm-mmmm. I guess we'll have to visit each other's houses.

--- End quote ---
That sounds like a threat!
 :P

--- End quote ---

Hahhahahahahahah. Or I'm making a pass.

Ummon:

Well, since this is somewhat more active, I thought I'd post these here. Some scanlines effects that I think look good, using the last Advancemame: .106.1 .  (Ahem - the caveat is that you must be using a 27" monitor at XGA....for those few of you who are....as it doesn't look good on my PC monitor at that res. I'll have to try the native res of that monitor - SXGA - maybe that makes a difference. Another caveat I just found...or, sorta refound....is that they blow scrolling games. Well, old mame affects always did....not that new mame is perfect, either. Anyways....)

Significant differences in this version are:

 - The default output mode in Windows and X is now 'overlay'.
 - The default resize effect is now 'fractional' instead of 'integer'.
 - The 'overlaysize' option now has the default 'auto' which uses the current video mode. 
 - The SDL library now force the video driver 'directx' as default. Required because from SDL 1.2.10 the default is the slow 'windib'

What this means is that it's a bit like the old ddraw+hwstretch in mame, sans effects, or like current mame with prescale at '1'. Before this, you could get Advancemame to display at the desktop resolution, but the result was like prescale at 2 - or even more, like the 31khz output from the AVGA. A little harsh to me.

So, here we have the following settings:

image 1 (light scanlines) : magnify 2 / scan2horz / gamma = 1.20

image 2 (stronger scanlines) : magnify 3 / scan3horz / gamma = 1.30

image 3 (sorta purple girders) : magnify 3 / scan3horz / gamma = 2.0


(Again, remember to click inside the pictures after clicking on them. Or, try the same settings.)

Ummon:

Here's something I had archived and came across:

http://jvspac.kirurg.org/?page=mame

It's about running double-pixeled and using effects. Not a new premise, but one I think everyone has forgotten about. This means you have to create specific modes for each resolution you're going to run, so that you can run at 31khz (around) while having an exact double multiple of the game's resolution.

I tried this on my digital multisync (27") with 336x240, 292x240, and 256x240 games at 640x480, and they were almost indistinguishable from running them native. Maybe not quite as bright, but very nice looking.

Incidentally, this is sorta similar to what the old Stretchmame would do, but far better looking, at least brightness-wise.

....Actually, I was just playing with this in mame .104 (ie: before the re-write), and it looks really good there, too - horizontal games at 640x480, vertical games at 800x600; 50% scanlines for both. Don't even have to change the default brightness or gamma. However, it won't work for  horizontal games above 320x240 - they don't fill the display area - I would guess because of how mame treats those resolutions.

Ummon:

In fact, I would go so far as saying using older mame on a large CRT this way IS indistinguishable from running native on a similar CRT. Brighter display than going the new mame way.

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