Opened 15 years ago

Closed 16 months ago

Last modified 4 months ago

#7373 closed enhancement (outdated)

SCALERS: Old monitor rendering

Reported by: sev- Owned by: csnover
Priority: low Component: Graphics: Scalers
Keywords: Cc:


I have some code to render natural picture. It is 3x
scaler and picture it gives behaves quite realistic as
an old TV.

I think that such mode would be interesting with old
games like Zak and MM, as well as console ports like
PCE Loom, NES MM, Sega MI1 and 3DO HE games. I.e.
picture will be really close to what was back then with

I used code of Trevor Blackwell found at (see Apple II mode for X

I'm still fighting with the beast and got only stetched
B/W code. I'm attaching screenshot, but I'm not
satisfied with the result.


Ticket imported from: #955392. Ticket imported from: feature-requests/189.

Attachments (1)

zaktv.png (103.8 KB) - added by sev- 15 years ago.
Zak with AnalogTV scaler on

Download all attachments as: .zip

Change History (10)

Changed 15 years ago by sev-

Attachment: zaktv.png added

Zak with AnalogTV scaler on

comment:1 Changed 15 years ago by sev-

Priority: normallow

comment:2 Changed 15 years ago by sev-

I forgot to mention that realism achieved by emulation of
analog DACs, so it's quite computation expensive, maybe even
more than HQ3x (no, not compilation, code is not that big :)
). And due to nature of the scaler, each screen should be
rendered as a whole, i.e. no partial screen updates or there
would be artifacts. The reason to this is that random
noise/ripples are added to the image, what results to that
very realism.

comment:3 Changed 15 years ago by SF/sascha_f

These open source projects also feature some sort of
"monitor emulation":

blueMSX :

VICE x64 :

Might be worth taking a look at the code or contacting the
authors. :)

comment:4 Changed 15 years ago by SF/kaminari

Yup, the TV mode from Daniel Vik's BueMSX is quite terrific.
It's fast, very configurable (Y/C, composite, with or without
noise) and renders great even in 2x. Definitely worth a look.

comment:5 Changed 14 years ago by SF/timofonic

BludMSX filter for ScummVM could be awesome :)

comment:6 Changed 14 years ago by SF/thunderpeel2001

The blueTV filter can be seen here:

(scroll to the bottom)

Very nice!!!

comment:7 Changed 14 years ago by SF/timofonic

ANy news about this? Anyone contacted with the BlueTV
author? Maybe he can be interested about adding it or
helping on that...

comment:8 Changed 16 months ago by csnover

Owner: set to csnover
Resolution: outdated
Status: newclosed

Closing because there is nothing actionable in this ticket.

comment:9 Changed 4 months ago by digitall

Component: Graphics: Scalers
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