Integer Scaling on Dolphin

[Cherry44]

Is there any option for Integer Scaling for Dolphin? The "Auto" aspect ratio doesn't help much and I'm looking how do I do to make the image not stretched to the top and bottom of my screen.

[MayImilae]

Can you be more specific? Your phrasing is mixing concepts and I'm not sure what you mean.

Referring to aspect ratio (ratio of height and width of the image), Dolphin maintains the game's intended aspect ratio very strictly. We enlarge the image to fill your screen but the aspect ratio is maintained, leading to black bars on the sides or top/bottom of your screen. By doing this, you will see circles, squares, etc etc as the game would direct a CRT to display them.

Referring to integer Scaling, aka nearest neighbor filtering that is scaled by integers to match the source pixel grid to the display pixel grid as close as possible... well, if you are wanting 1x native with pin sharp pixels on your 4k screen, you are asking for something that fundamentally didn't exist on the GameCube and Wii. I'll let phire explain this since they know waaaay more about this than I do.

Spoiler: (Show Spoiler)

https://bugs.dolphin-emu.org/issues/12725#note-1

phire Wrote:First, a real console simply doesn't output perfect pixel like you are expecting from dolphin. In-fact dolphin outputs significantly "cleaner" pixels, as it skips several steps of blur. The clean image quality you are striving for simply never existed. By default, games always do both vertical and horizontal bluring, and most games do horizontal scaling. All PAL games apply a vertical scaling.

Even in the games that go out of their way to offer a mode that minimise this (like Melee's disable AA filter mode), the vertical blurring incurred from the YUVU framebuffer is impossible to disable on real hardware.

If you want an accurate console experience, we should actually be adding more blur.

Second, The video used by the GameCube and Wii (REC.601) has non-square pixels. 0.91:1 in NTSC and 1.09:1 in PAL. It's simply impossible to accurately portray this on a video mode with 1:1 square pixels, like 640x480 @ 60HZ VGA. Either you need to do some form of scaling (like dolphin currently does) or you end up with an incorrect aspect ratio.

So, which of these two concepts are you referring to?