Stride: ModalElement "Overlay Rectangle" doesn't fill whole screen when window is resized

[jeske]

Release Type: Release
Version: v4.0.0.1-beta2-0928
Platform(s): Windows

Describe the bug

When using a ModalElement to bring up some UI and prevent interaction with the UI behind it, ModalElementRenderer draws a rectangle that's supposed to cover everything behind it. (to shade it a bit)

However, if the window is resizable with Game.Window.AllowUserResizing = true;, this rectangle doesn't fill the whole window properly when it's taller than wider. Not sure why this is. I think the drawing code is here:

Stride.UI/Renderers/DefaultModalElementRenderer.cs

I have noticed that the 2d UI virtual resolution seems to only scale proportional to window width. (the size of 2d items changes based on window width, but it does not change based on window height)

To Reproduce
Steps to reproduce the behavior:

(rewriting a new example test case)

Expected behavior

Expected the modal blocking panel to stay filling the window as it's resized.

Screenshots

I have highlighted the top bar in purple on the screenshot below, and I've provided a youtube video demonstration.

Video: Youtube - visual artifacts resizing a game window - Stride v4.0.0.1-beta2-0928

[Eideren]

Could not reproduce on 'New Game' and 'Animation' sample, this might be related to the UI you have there ? A small repro might help if you have the time to prepare one

[jeske]

My repo is available here:

https://github.com/jeske/LoadObjTest

[Basewq]

I tested your project, the 'dark' middle part is related to your UI code, and is only stretching horizontally.
I commented out Entity.Get<UIComponent>().Page = new UIPage { RootElement = mainMenuRoot }; and the whole screen was brighter.
As for why the UI is darkening the screen, that's probably what needs to be investigated more (I suspect there's some sort of black UI background with an alpha?)

EDIT: You're using a ModalElement, it has an OverlayColor defaulted to #99000000 which is why it's darkening. And you're not stretching vertically so it doesn't update its height.

[jeske]

Thanks for that... my mistake...

[jeske]

I better understand this now.. There is a bug... ModalElementRenderer draws a rectangle that is supposed to "fill the whole screen" to shade things behind it.. but somehow this isn't actually filling the whole screen when the window is resized.

[Basewq]

Not sure if this solves your issue or not, but the UI sample project code also updates the UIComponent's Resolution when the window's size changes
https://github.com/stride3d/stride/blob/273dfddd462fd3746569f833e1493700c070b14d/samples/UI/GameMenu/GameMenu.Game/UISceneBase.cs#L48-L52