Posts: 5.076
Threads: 18
Joined: Oct 2010
Reputation:
154
I guess you are right and it doesn't create interlaced images. Otherwise it will probably look different on lcd's. Deinterlacing was just the first coming to my mind but it probably just removes interlacing filters.
I still don't get exactly what you want to achieve. Does it look bad? I think there are some users on the forum using a crt. I never heard complains.
Posts: 5.076
Threads: 18
Joined: Oct 2010
Reputation:
154
11-09-2015, 12:09 PM
(This post was last modified: 11-09-2015, 12:13 PM by willkuer.)
Sorry I had some heavy misunderstanding of basics. I always thought algorithms as bob try to improve interlaced image quality (e.g. by removing moiré effects). That's why I called it interlacing filter. I thought these hinder us from creating nice sharp progressive images and - if the game applied bob in the gs - we do anti-bob named as Deinterlacing(bob) in pcsx2 in order to remove it. After some wikipedia I know better and now I understand your idea.
As gsdx is low level emulated the video output depends on the game. Some games support progressive output but they are few and I think they often have more glitched graphics in progressive mode. So you have to live most of the time with interlaced images (that are normally deinterlaced).
But now again I would guess if you use no deinterlacing (in the sense of Deinterlacing(none)) and create an interlaced image out of it (either in your gpu or by using an active converter HDMI->Component as most user would do) you should get what you want. I guess Deinterlacing(none) creates a progressive image with alternating updates of even or odd lines. If you now send alternating lines of this progressive image to your crt you should get the same as directly sending interlaced frames except you might be delayed by one refresh interval (30 ms) and possibly get synchronization issues/tearing if you are not vsyncing properly pcsx2, gpu and crt.