If this panel should be rendered with ~4K resolution.

If this panel belongs to a VR overlay

True if this is a world panel, so should be skipped when determining cursor visibility etc

Bounds of the panel, i.e. its size and position on the screen.

If set to true this panel won't be rendered to the screen like a normal panel. This is true when the panel is drawn via other means (like as a world panel).

The scale of this panel and its children.

Render this panel manually. This gives more flexibility to where UI is rendered, to texture for example. Sandbox.UI.RootPanel.RenderedManually must be set to true.

Called before layout to lock the bounds of this root panel to the screen size (which is passed). Internally this sets PanelBounds to rect and calls UpdateScale.

Work out scaling here. Default is to scale relative to the screen being 1920 wide. ie - scale = screensize.Width / 1920.0f;