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Removal of Custom resolution from GSdx
The are two "problems" with native resolution multipliers.

1- The X axis is left with a lower resolution compared to the Y axis when you play in 16:9 (and games usually have a 512x448 internal resolution, even less wide than 4:3), so games will look more easily aliased horizontally and antialiased vertically. Not a problem, just a curiosity. This can be compensated with custom resolutions.

2- We need more high resolution multipliers or a custom multiplier in the GUI, because there are games that use a lower internal resolution than reported (DBZ Infinite World and Ratchet and Clank, for example. 2560x1440 in my 1440p monitor looks low res). I can use "upscale_multiplier" in GSdx.ini, but it's annoying because to change it I have to close the emulator. The highest multiplier I can use is 12 (6144x5376 in Ratchet and Clank, for example). Anything higher than that causes a Visual C++ runtime error. However, with custom resolutions I can use anything up to 8192x8064 (sometimes a lower vertical resolution in other games. I can notice the image quality improvement compared to 12x native).

7680x4320 is what I sometimes use for internally low res games (3 times my monitor resolution per axis). Horizontally, the equivalent would be 15x native, but that would also put the Y resolution to 6720, so it would be 55.56% more demanding  Tongue .

However, in games that use the inputted resolution 1:1, it's noticeable that PCSX2 uses a bad downscaler at a higher than 2x2 monitor resolution (7680x4320 looks very aliased in Persona 4). Asmodean's bicubic filtering doesn't look as good as I would expect (maybe it isn't supposed to be a substitute of PCSX2 downscaler?), and 5120x2880 with 4xMSAA looks a lot more antialiased.

In my opinion, it's good to have the custom resolution option. I'm aware that some games are incorrect with it, and I'll use native resolution multipliers with them (in normal circumstances I do it for most games, except for those that have low internal resolutions).
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Just FYI I think it's known that GSdx's scaler is fairly basic and not awesome.
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I have a slow PC and use custom resolutions to get my games running at full speed. For Dragon Quest 8, I use 1280x1080 to get the game running at a playable speed with maximum image quality on a 1080p screen and output resolution.

For other games I use 1440x1080, 1680x1080 or other unconventional resolutions that get the maximum resolution / performance mix.
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(12-05-2016, 05:32 PM)etking Wrote: I have a slow PC and use custom resolutions to get my games running at full speed. For Dragon Quest 8, I use 1280x1080 to get the game running at a playable speed with maximum image quality on a 1080p screen and output resolution.

For other games I use 1440x1080, 1680x1080 or other unconventional resolutions that get the maximum resolution / performance mix.

Native x2 is about the same as the resolution you set manually.. well, what you're expecting anyway Wink
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