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video: Unload GL/Vulkan when shutting down the video subsystem

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If GL/Vulkan was loaded manually via a SDL_X_LoadLibrary() call instead of via window flags or through the GPU or renderer system, and there is no matching SDL_X_UnloadLibrary() call, the library instance won't be automatically unloaded while shutting down the video system, as the refcount won't go to zero, which can cause problems with some backends, and leaves a leaked DLL/SO handle when the global video object is destroyed.

Ensure that the libraries are unloaded after destroying the windows, but before shutting down the video backend, to prevent a leak and possible driver errors when shutting down the video backend.
This commit is contained in:
Frank Praznik 2025-12-21 11:11:44 -05:00
parent b14aceea51
commit 37fca1fdcf
1 changed files with 10 additions and 0 deletions
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10
src/video/SDL_video.c
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@ -4667,6 +4667,16 @@ void SDL_VideoQuit(void)
while (_this->windows) {
SDL_DestroyWindow(_this->windows);
}
if (_this->gl_config.driver_loaded && _this->GL_UnloadLibrary) {
_this->GL_UnloadLibrary(_this);
_this->gl_config.driver_loaded = 0;
}
if (_this->vulkan_config.loader_loaded && _this->Vulkan_UnloadLibrary) {
_this->Vulkan_UnloadLibrary(_this);
_this->vulkan_config.loader_loaded = 0;
}
_this->VideoQuit(_this);
for (i = _this->num_displays; i--; ) {