(02-27-2014, 02:44 PM)Draconic Seed Wrote: Here's what intrigues me: if it's an interlacing thing like avih explained, then more (most?) PS2 games should exhibit the same massive amount of ghosting that these Atlus games do.
Not true.
For most games GSdx can produce native progressive image (not interlaced and doesn't require deinterlacing even if the game is not set to 480p display). E.g. GOW, ICO and many others. For those games, it doesn't matter if the in-game options are set to output progressive or "normal" (interlaced) - GSdx can and does output progressive regardless.
But for some games, especially games with "postprocessing" effects (which confusingly sometimes include intentional blur), GSdx can't produce native progressive image, so those games have to be deinterlaced (which uses the Blend method by default - which creates blur during movements - but you can manually choose different deinterlace like bob which doesn't blur). E.g. Gran Turismo games (if the output isn't set in-game to 480p).
If you want to know if GSdx can output native progressive image for a specific game, set deinterlace mode to "None", and if it has a comb effect (horizontal lines) then it needs deinterlacing, otherwise, it's properly progressive and doesn't require deinterlacing (which means that if there's blur then it's intentional by the game and not a side effect of deinterlacing).
Visit this page to read a bit about (de)interlacing:
http://www.100fps.com/
The first 3 images show interlaced image which was not deinterlaced. If you set GSdx deinterlace to "None" and the image looks like any of the first 3 images, then it needs deinterlacing.