Subj : RetroPie + CRT
To   : All
From : deepthaw
Date : Tue Oct 10 2017 08:59:28

Settling into my new house, I've decided on the attic as my "getaway"
location, since nobody else goes up there. I put an old 19" TV up there and
decided to hook up my RetroPie.

A recent-ish update enabled 240p output over composite video,and I decided to
give it a shot.

It looks really nice in most situations. Genesis games look great, being that
they run at 320x224, SNES games look nice as well, but the graphics are kind
of "squashed" since they run at 256x224.

Some technical details behind this: 240p is running at 320x240 resolution,
and you have to play with aspect ratios and so on to force a 1:1 display of
pixels (interpolation/smoothing looks awful to me at this low a resolution.)

On native hardware, it could tell the display to run at the intended
resolution natively, so the SNES had wider pixels than the Genesis to make up
for having a lower horizontal resolution. Since the closest you can get with
composite is 320x240, you're going to end up with black bars on the sides.

--- Mystic BBS v1.12 A35 (Windows/32)
 * Origin: Deep Space '94 * telnet://deepspace94.com * fnord (80:774/43)

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