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ui: Set SDL_HINT_VIDEO_DRIVER to wayland,x11

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Matt Borgerson
2026-05-16 17:05:30 -07:00
parent 6318bb1120
commit fb95b7785a
1 changed files with 6 additions and 9 deletions
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15
ui/xemu.c
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@ -947,16 +947,13 @@ static void poll_events(struct xemu_console *scon)
static void display_very_early_init(DisplayOptions *o)
{
#ifdef __linux__
/* on Linux, SDL may use fbcon|directfb|svgalib when run without
* accessible $DISPLAY to open X11 window. This is often the case
* when qemu is run using sudo. But in this case, and when actually
* run in X11 environment, SDL fights with X11 for the video card,
* making current display unavailable, often until reboot.
* So make x11 the default SDL video driver if this variable is unset.
* This is a bit hackish but saves us from bigger problem.
* Maybe it's a good idea to fix this in SDL instead.
/* SDL3 falls back to XWayland on compositors without fifo-v1 [1],
* breaking HiDPI. Swap may block when occluded, but the BQL is released
* before swap so emulation is unaffected.
*
* [1] https://github.com/libsdl-org/SDL/pull/9383
*/
setenv("SDL_VIDEODRIVER", "x11", 0);
SDL_SetHint(SDL_HINT_VIDEO_DRIVER, "wayland,x11");
#endif
if (!SDL_Init(SDL_INIT_VIDEO)) {