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Fixed in 1.1.0.-pre.5



Found in [Package]


Issue ID




[WebGL] Mouse position is not relative to the canvas when using the new input system

Package: Input System


There are two issues in this bug report:

This error was seen when calling InputSystem.RegisterBindingComposite function with RuntimeInitializeOnLoadMethod attribute:
"InvalidOperationException while resolving binding 'point:PointerInput' in action map 'PointerControls"

This was occurring not because of a bug, but because the script was missing the [RuntimeInitializeLoadType.BeforeSceneLoad] attribute before calling the register function:
private static void Register()

The documentation was updated to clarify this:

Once you add that, the error goes away, but then there is a bug in the WebGL new input system code where the mouse position returned was relative to the browser window, and not the Unity canvas.

How to reproduce:
1. Open the attached project
2. Make a WebGL build
3. Host the built WebGL Player locally
4. Open the built Player in a browser
5. Wait for the Player to load
6. Check the Developer Console (shortcut F12)

Expected result: No exceptions are thrown
Actual result: "RuntimeError: memory access out of bounds" error are thrown

Reproducible with: 1.1.0-pre.5 (2021.2.0b4, 2022.1.0a2)
Not reproducible with: 1.1.0-pre.5 (2019.4.29f1, 2020.3.14f1,, 2021.1.15f1) (Player doesn't crash but Input errors are still thrown)

- There are also additional "InvalidOperationException while resolving binding" errors thrown

- Adding a 'RuntimeInitializeLoadType.BeforeSceneLoad' parameter to the RuntimeInitializeOnLoadMethod Attribute used on the Register function (to call InputSystem.RegisterBindingComposite<PointerInputComposite>();) seems to resolve the crash and errors. Function is inside the PointerInput.cs file

  1. Resolution Note (fix version 1.1.0.-pre.5):

    Fixed in 2022.1.0a7

  2. Resolution Note (fix version 1.1.0.-pre.5):

    Fixed in 2020.3.29f1

  3. Resolution Note:

    Fixed in 2021.1.21f1

  4. Resolution Note:

    Fixed in 2021.2.0b12

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