Opened 20 years ago

Closed 6 years ago

Last modified 5 years ago

#7373 closed feature request (outdated)

SCALERS: Old monitor rendering

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


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 original.

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

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- 20 years ago.
Zak with AnalogTV scaler on

Download all attachments as: .zip

Change History (10)

by sev-, 20 years ago

Attachment: zaktv.png added

Zak with AnalogTV scaler on

comment:1 by sev-, 20 years ago

Priority: normallow

comment:2 by sev-, 20 years ago

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 by SF/sascha_f, 20 years ago

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 by SF/kaminari, 20 years ago

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 by SF/timofonic, 19 years ago

BludMSX filter for ScummVM could be awesome :)

comment:6 by SF/thunderpeel2001, 19 years ago

The blueTV filter can be seen here:

(scroll to the bottom)

Very nice!!!

comment:7 by SF/timofonic, 19 years ago

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

comment:8 by csnover, 6 years ago

Owner: set to csnover
Resolution: outdated
Status: newclosed

Closing because there is nothing actionable in this ticket.

comment:9 by digitall, 5 years ago

Component: Graphics: Scalers
Note: See TracTickets for help on using tickets.