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When running SDL3 applications on tiling window managers like i3, moving a window to an invisible workspace does not trigger SDL_WINDOW_MINIMIZED or SDL_WINDOW_HIDDEN. Consequently, the application continues rendering at full speed (VSync dependent), consuming unnecessary GPU/CPU resources even when not visible. When a workspace is hidden, i3(and possible other tiling WMs) unmaps the container and sets the client window state to WithdrawnState (via the WM_STATE atom). Previously, the SDL3 X11 backend ignored changes to WM_STATE during PropertyNotify events, failing to detect this transition.
Simple DirectMedia Layer (SDL for short) is a cross-platform library designed to make it easy to write multi-media software, such as games and emulators.
You can find the latest release and additional information at: https://www.libsdl.org/
Installation instructions and a quick introduction is available in INSTALL.md
This library is distributed under the terms of the zlib license, available in LICENSE.txt.
Enjoy!
Sam Lantinga (slouken@libsdl.org)