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0

Found in

2022.3.64f1

6000.0.52f1

6000.1.10f1

6000.2.0b8

6000.3.0a1

7000.0.0a1

Issue ID

UUM-110469

Regression

No

Screen.resolutions and Display.displays showing screen resolution higher than possible on Mac external monitor

-

Reproduction steps:
1. Open the attached “Mac ScreenRes.zip“ project
2. Open the “Assets/Scenes/Main.unity“ Scene
3. Open the “Displays” settings in the macOS system settings
4. Select the “2560x1440“ or the “3200x1800“ scaling option on the selected external 4k display
5. Build And Run the project (File > Build And Run)

Expected result: The display’s resolution matches the one set in the system settings
Actual result: The display’s resolution shows up as “5120x2880” or “6400x3600” respectively

Reproducible with: 2022.3.64f1, 6000.0.52f1, 6000.1.10f1, 6000.2.0b8, 6000.3.0a1

Reproducible on: M1 Max MacOS 15.5 (Tested by CQA)
Not reproducible on: No other environment tested

Note: This issue is only reproducible with 4k monitors connected to macOS

  1. Resolution Note:

    This is the expected behaviour. When a custom resolution (scaling) is selected in the macOS settings and that resolution is less than the native resolution of the external monitor, macOS will render everything at 2x resolution internally and then downscale to present the image in the native size of the monitor. What Unity returns is the the actual rendering resolution (so 2x).

    Here's a nice write up of what happens with resolution scaling in macOS: https://github.com/waydabber/BetterDisplay/wiki/MacOS-scaling,-HiDPI,-LoDPI-explanation

    We do agree, that actual native size of the display is a relevant information and we will evaluate it as a feature request to see if we can introduce it in the future releases of Unity

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