How can I keep my texture center during resizing the window

Game Development
2

are you on Windows?

  1. write an event filter function following this signature: SDL2/SDL_EventFilter - SDL2 Wiki
    • you must return 1 from this event filter. if you return zero, you break SDL.
    • for SDL_WINDOWEVENT_SIZE_CHANGED and SDL_WINDOWEVENT_RESIZED, execute code strictly related to resizing, NOT rendering
    • catch SDL_WINDOWEVENT_EXPOSED, then execute render-related code
    • these three events are guaranteed to be watched/filtered in main thread, despite documentation saying they can be called from any thread. you can write assertions to ensure this, if you feel paranoid
  2. during initialization, activate the callback with an event watcher: SDL2/SDL_AddEventWatch - SDL2 Wiki

see this: Is it thread-safe to render inside event watcher?
and this: Live-resize of an SDL window

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