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x11: XI_Motion should mark the global mouse position as changed.

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Otherwise we'll miss it when XWarpPointer() is used. x11vnc may do this to
manage mouse input in some circumstances, so it can be possible for _all_
mouse motion to go through this path, breaking SDL_GetGlobalMouseState().

Thanks to @chrismile for all the detective work to figure this out!

Fixes #8827.
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Ryan C. Gordon 2024-01-18 15:10:16 -05:00
parent f52a12a8fe
commit cc7fe8c255
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1 changed files with 2 additions and 0 deletions
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src/video/x11/SDL_x11xinput2.c
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@ -337,6 +337,8 @@ int X11_HandleXinput2Event(SDL_VideoData *videodata, XGenericEventCookie *cookie
const XIDeviceEvent *xev = (const XIDeviceEvent *)cookie->data;
int pointer_emulated = (xev->flags & XIPointerEmulated);
videodata->global_mouse_changed = SDL_TRUE;
if (!pointer_emulated) {
SDL_Mouse *mouse = SDL_GetMouse();
if (!mouse->relative_mode || mouse->relative_mode_warp) {