The imgui debug menu flickers in some cases, e.g resizing the window

[NetSysFire]

Describe the bug

You can briefly see the game behind the menu.

Attach save file

n/a

Steps to reproduce

1. Go into the debug menu.
2. Select player > mutate (pM)
3. Toggle any trait.
4. It briefly flickers.

Alternatively, just resize the cdda window, e.g I make my window manager toggle fullscreen. That works with other menus such as the spawn item or monster one to cause flickering.

Expected behavior

It does not flicker/redraw the whole screen.

Screenshots

No response

Versions and configuration

• OS: Linux
  • OS Version: LSB Version: n/a; Distributor ID: Arch; Description: Arch Linux; Release: rolling; Codename: n/a;
• Game Version: cdda-experimental-2024-10-23-1516 99d27e5 [64-bit]
• Graphics Version: Tiles
• Game Language: English [en]
• Mods loaded: [
  Dark Days Ahead [dda],
  Disable NPC Needs [no_npc_food],
  Slowdown Fungal Growth [no_fungal_growth],
  Bionic Professions [package_bionic_professions]
  ]

Additional context

No response

[CoroNaut]

#69987
I'm fairly certain that all windows redraw when they need an update, just in some cases, its slow. An example is the advanced inventory, any item that gets moved will toggle a complete redraw of the window. The consume window, when consuming an item, redraws the entire window. It makes sense that changing the color of a selection in the mutate window causes the game to re-get all items in the list. If it were just held in memory to change a single value, it would definitely be faster. The time is takes to completely get all the required information to display the window takes too long O(n).

A potential hack could be to wait to update the entire game UI until the window redraw is ready, rather than removing the window, calculating window contents, then redrawing window.