Hi Marc-André, > https://docs.gtk.org/gtk3/method.Widget.is_visible.html
This is what we had tried first but it didn't seem to work for the case of window minimization. I see the visible flag for the GTK widget didn't seem to be toggled for some reason. And when closing window, vc->window widget is destroyed so it is not possible to check the flag using this GTK function. Having extra flag bound to VC was most intuitive for the logic I wanted to implement. Thanks!! DW > Subject: Re: [PATCH 1/3] ui/gtk: skip drawing guest scanout when associated > VC is invisible > > Hi Dongwon > > On Wed, Jan 31, 2024 at 3:50 AM <dongwon....@intel.com> wrote: > > > > From: Dongwon Kim <dongwon....@intel.com> > > > > A new flag "visible" is added to show visibility status of the gfx console. > > The flag is set to 'true' when the VC is visible but set to 'false' > > when it is hidden or closed. When the VC is invisible, drawing guest > > frames should be skipped as it will never be completed and it would > > potentially lock up the guest display especially when blob scanout is used. > > Can't it skip drawing when the widget is not visible instead? > https://docs.gtk.org/gtk3/method.Widget.is_visible.html > > > > > Cc: Marc-André Lureau <marcandre.lur...@redhat.com> > > Cc: Gerd Hoffmann <kra...@redhat.com> > > Cc: Vivek Kasireddy <vivek.kasire...@intel.com> > > > > Signed-off-by: Dongwon Kim <dongwon....@intel.com> > > --- > > include/ui/gtk.h | 1 + > > ui/gtk-egl.c | 8 ++++++++ > > ui/gtk-gl-area.c | 8 ++++++++ > > ui/gtk.c | 10 +++++++++- > > 4 files changed, 26 insertions(+), 1 deletion(-) > > > > diff --git a/include/ui/gtk.h b/include/ui/gtk.h index > > aa3d637029..2de38e5724 100644 > > --- a/include/ui/gtk.h > > +++ b/include/ui/gtk.h > > @@ -57,6 +57,7 @@ typedef struct VirtualGfxConsole { > > bool y0_top; > > bool scanout_mode; > > bool has_dmabuf; > > + bool visible; > > #endif > > } VirtualGfxConsole; > > > > diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c index 3af5ac5bcf..993c283191 > > 100644 > > --- a/ui/gtk-egl.c > > +++ b/ui/gtk-egl.c > > @@ -265,6 +265,10 @@ void > gd_egl_scanout_dmabuf(DisplayChangeListener > > *dcl, #ifdef CONFIG_GBM > > VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); > > > > + if (!vc->gfx.visible) { > > + return; > > + } > > + > > eglMakeCurrent(qemu_egl_display, vc->gfx.esurface, > > vc->gfx.esurface, vc->gfx.ectx); > > > > @@ -363,6 +367,10 @@ void gd_egl_flush(DisplayChangeListener *dcl, > > VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); > > GtkWidget *area = vc->gfx.drawing_area; > > > > + if (!vc->gfx.visible) { > > + return; > > + } > > + > > if (vc->gfx.guest_fb.dmabuf && !vc->gfx.guest_fb.dmabuf- > >draw_submitted) { > > graphic_hw_gl_block(vc->gfx.dcl.con, true); > > vc->gfx.guest_fb.dmabuf->draw_submitted = true; diff --git > > a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c index 52dcac161e..04e07bd7ee > > 100644 > > --- a/ui/gtk-gl-area.c > > +++ b/ui/gtk-gl-area.c > > @@ -285,6 +285,10 @@ void > > gd_gl_area_scanout_flush(DisplayChangeListener *dcl, { > > VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); > > > > + if (!vc->gfx.visible) { > > + return; > > + } > > + > > if (vc->gfx.guest_fb.dmabuf && !vc->gfx.guest_fb.dmabuf- > >draw_submitted) { > > graphic_hw_gl_block(vc->gfx.dcl.con, true); > > vc->gfx.guest_fb.dmabuf->draw_submitted = true; @@ -299,6 > > +303,10 @@ void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl, > > #ifdef CONFIG_GBM > > VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); > > > > + if (!vc->gfx.visible) { > > + return; > > + } > > + > > gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); > > egl_dmabuf_import_texture(dmabuf); > > if (!dmabuf->texture) { > > diff --git a/ui/gtk.c b/ui/gtk.c > > index 810d7fc796..02eb667d8a 100644 > > --- a/ui/gtk.c > > +++ b/ui/gtk.c > > @@ -1312,15 +1312,20 @@ static void gd_menu_quit(GtkMenuItem *item, > > void *opaque) static void gd_menu_switch_vc(GtkMenuItem *item, void > > *opaque) { > > GtkDisplayState *s = opaque; > > - VirtualConsole *vc = gd_vc_find_by_menu(s); > > + VirtualConsole *vc; > > GtkNotebook *nb = GTK_NOTEBOOK(s->notebook); > > gint page; > > > > + vc = gd_vc_find_current(s); > > + vc->gfx.visible = false; > > + > > + vc = gd_vc_find_by_menu(s); > > gtk_release_modifiers(s); > > if (vc) { > > page = gtk_notebook_page_num(nb, vc->tab_item); > > gtk_notebook_set_current_page(nb, page); > > gtk_widget_grab_focus(vc->focus); > > + vc->gfx.visible = true; > > } > > } > > > > @@ -1350,6 +1355,7 @@ static gboolean gd_tab_window_close(GtkWidget > *widget, GdkEvent *event, > > VirtualConsole *vc = opaque; > > GtkDisplayState *s = vc->s; > > > > + vc->gfx.visible = false; > > gtk_widget_set_sensitive(vc->menu_item, true); > > gd_widget_reparent(vc->window, s->notebook, vc->tab_item); > > gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(s->notebook), > > @@ -1423,6 +1429,7 @@ static void gd_menu_untabify(GtkMenuItem *item, > void *opaque) > > gd_update_geometry_hints(vc); > > gd_update_caption(s); > > } > > + vc->gfx.visible = true; > > } > > > > static void gd_menu_show_menubar(GtkMenuItem *item, void *opaque) > @@ > > -2471,6 +2478,7 @@ static void gtk_display_init(DisplayState *ds, > > DisplayOptions *opts) #ifdef CONFIG_GTK_CLIPBOARD > > gd_clipboard_init(s); > > #endif /* CONFIG_GTK_CLIPBOARD */ > > + vc->gfx.visible = true; > > } > > > > static void early_gtk_display_init(DisplayOptions *opts) > > -- > > 2.34.1 > > > > > > > -- > Marc-André Lureau
