[Bug 1799792] Re: Broken scaling with gtk,gl=on on a hidpi display
Still happening in QEMU 5.1.0 ** Changed in: qemu Status: Incomplete => New -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1799792 Title: Broken scaling with gtk,gl=on on a hidpi display Status in QEMU: New Bug description: Tested on QEMU 3.0.0 on Arch Linux. I'm using a hidpi screen, and therefore use those environment variables in order to have GTK+ apps properly scaled: GDK_SCALE=2 GDK_DPI_SCALE=0.5 However, QEMU, when launched with "-display gtk,gl=on" option, doesn't scale the window content properly, as seen on the attached screenshot. Switching to "-display gtk,gl=off" and "-display sdl,gl=on" makes it work fine. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1799792/+subscriptions
[Qemu-devel] [Bug 1799792] [NEW] Broken scaling with gtk, gl=on on a hidpi display
Public bug reported: Tested on QEMU 3.0.0 on Arch Linux. I'm using a hidpi screen, and therefore use those environment variables in order to have GTK+ apps properly scaled: GDK_SCALE=2 GDK_DPI_SCALE=0.5 However, QEMU, when launched with "-display gtk,gl=on" option, doesn't scale the window content properly, as seen on the attached screenshot. Switching to "-display gtk,gl=off" and "-display sdl,gl=on" makes it work fine. ** Affects: qemu Importance: Undecided Status: New ** Attachment added: "Screenshot_20181024_222447.png" https://bugs.launchpad.net/bugs/1799792/+attachment/5205039/+files/Screenshot_20181024_222447.png -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1799792 Title: Broken scaling with gtk,gl=on on a hidpi display Status in QEMU: New Bug description: Tested on QEMU 3.0.0 on Arch Linux. I'm using a hidpi screen, and therefore use those environment variables in order to have GTK+ apps properly scaled: GDK_SCALE=2 GDK_DPI_SCALE=0.5 However, QEMU, when launched with "-display gtk,gl=on" option, doesn't scale the window content properly, as seen on the attached screenshot. Switching to "-display gtk,gl=off" and "-display sdl,gl=on" makes it work fine. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1799792/+subscriptions
[Qemu-devel] [PATCH] SDL: set a hint to not bypass the window compositor
Without that, window effects in KWin get suspended as soon as any qemu-sdl window becomes visible. While the SDL default makes sense for games, it's not really suitable for QEMU. Signed-off-by: Sebastian Krzyszkowiak --- ui/sdl2.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/ui/sdl2.c b/ui/sdl2.c index 2696b95c79..a10b6e3a08 100644 --- a/ui/sdl2.c +++ b/ui/sdl2.c @@ -786,6 +786,9 @@ static void sdl2_display_init(DisplayState *ds, DisplayOptions *o) SDL_GetError()); exit(1); } +#ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 2.0.8 */ +SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0"); +#endif SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1"); memset(, 0, sizeof(info)); SDL_VERSION(); -- 2.19.1
