[Solved] Camera issue with the UI - pixel perfect (shaking)

Unity Engine
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1

Hi, my programmer in my team is having a problem with the UI when it follow the player (main camera). When it switch or initiate a new scene, it “shakes”.

Any help is welcome, he has been days trying to fix it.

I uploaded a video with english subtitles (he doesn´t speak english), that you need to turn on.

And here is the problem itself.

Pixel Pefect Component that is added to the camera when the scene is loaded

7458890--915551--upload_2021-8-29_18-43-55.png
7458890--915551--upload_2021-8-29_18-43-55.png697×194 68.8 KB

In late update, the fragments of code that moves the camera and the interface shown in the youtube video

7458890--915557--upload_2021-8-29_18-44-26.png
7458890--915557--upload_2021-8-29_18-44-26.png697×201 69.2 KB

Already tried:

1- Put it in FixedUpdate()

2- Make the interface son of the camera

3- I checked with two inspector windows if when I move the player, the position of the camera in relation with the interface differs even in a decimal… but no, they are equal (the same).

7458890--915551--upload_2021-8-29_18-43-55.png
7458890--915551--upload_2021-8-29_18-43-55.png697×194 68.8 KB

1 Like
2

Do you need to have the panel viewed by the camera? You can make it a ScreenSpace Overlay and it will not move at all when the camera moves.

If you need it as Camera space, you could also make another camera ONLY for the UI using Layers.

Also, consider this timing diagram, and perhaps by stepping through your code you can reason about where the computation is not quite correct:

Here is some timing diagram help:

2 Likes
3

972×399 70.6 KB

It seems the readjustment of the camera with the physic pixels of the pixel perfect system don’t work directly with the canvas. So I needed to ask from script the component “CameraPixelPerfect”, and send to it the canvas position and then return me the correct position with the function “RoundToPixel()”.

I hope this help others with a similar problem.

4 Likes
4

Did this solve your issue? sorry for the bump but I’m facing this issue and I’m trying to fix it like this:

    public PixelPerfectCamera ppc;

    private void LateUpdate()
    {
        transform.position = ppc.RoundToPixel(transform.position);
    }

With no success. Thanks.

5

I’m currently developing a pixel game and ran into an issue where objects shake when using Cinemachine. Even with Pixel Perfect enabled in the settings, the shaking continues. However, without Pixel Perfect, the shaking stops, and it also doesn’t happen when Cinemachine isn’t used. I believe the problem is related to the damping in Cinemachine, as disabling it seems to fix the issue.

Give my solution a try, and I’d appreciate any feedback!