CRT/Retro Emulation

[netninja]

Hey guys, I don't know a lot about shaders, but I was wondering if anyone would be willing to have a stab at creating a retro/CRT/SNES/old-school screen emulation using shaders (unless there is a better way).

This is the effect I'm talking about:
http://www.gamasutra.com/view/news/35788/Opinion_CRT_Emulation_For_Pixel_Art.php

The RGB channels are all spread out and there are also scanlines.

More specifically, this recent game made with GameMaker has a cool effect that I really like, which is pretty much the same:
http://www.ludumdare.com/compo/ludum-dare-20/?uid=1604

Screenshot links:
http://www.ludumdare.com/compo/wp-content/compo2/45257/1604-shot1.png
http://www.ludumdare.com/compo/wp-content/compo2/45257/1604-shot0.png

Thanks!

[Looki]

http://clickteam.info/looki/Shaders/CRT.zip

Mashed this together really quickly with code from the Internet, hope it works somehow for you.

[alspal]

Recap is a master of this stuff, here's some of his articles on scanlines that may help.

http://postback.geedorah.com/foros/viewtopic.php?id=1560

and

http://postback.geedorah.com/foros/viewtopic.php?id=600&p=2

[netninja]

Thank you so much Looki! This is absolutely amazing. Exactly what I wanted. Thank you again!


http://jigxor.com/20event/DDCRTEmulation.jpg

[Looki]

You're welcome, if it needs an update you'll have to wait a while, see signature

[netninja]

August 2 is my Birthday

[alspal]

Looks pretty good, does it look even better when you run it at something like fullscreen?

[netninja]

Yeah I tried it at fullscreen at it looks great too!

[Atom]

Nice effect

By the way i noticed 'phase' has a input but it currently does nothing in the effects code.

[JessBowers]

Looki, thanks a TON! That CRT shader looks fantastic! It really takes me back to my days in the arcades.