Add patch for GNOME #769835
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Michael Catanzaro
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103
disable-egl-swap-interval.patch
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103
disable-egl-swap-interval.patch
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@ -0,0 +1,103 @@
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From ab66c3d7bfaa316fc80a19e8aae32949b80068c1 Mon Sep 17 00:00:00 2001
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From: Carlos Garnacho <carlosg@gnome.org>
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Date: Thu, 22 Dec 2016 19:22:07 +0100
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Subject: wayland: Disable EGL swap interval
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We have a frame clock that ensures rendering is done as per the
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output vsync. There is no need to have Mesa do the same for us.
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This, most notably, ensures Mesa doesn't schedule frame callbacks
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that will be left unattended if the compositor stops throttling
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frames for its surface, this is eg. the case if the toplevel is
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moved to another workspace.
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Also, given a SwapInterval!=0 will always bring these unexpected
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side effects, check that it's possible to disable it, and spew
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a debug message if that isn't the case.
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https://bugzilla.gnome.org/show_bug.cgi?id=769835
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---
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gdk/wayland/gdkdisplay-wayland.h | 1 +
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gdk/wayland/gdkglcontext-wayland.c | 25 ++++++++++++++++++++++---
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2 files changed, 23 insertions(+), 3 deletions(-)
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diff --git a/gdk/wayland/gdkdisplay-wayland.h b/gdk/wayland/gdkdisplay-wayland.h
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index a68940f..a9fd483 100644
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--- a/gdk/wayland/gdkdisplay-wayland.h
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+++ b/gdk/wayland/gdkdisplay-wayland.h
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@@ -120,6 +120,7 @@ struct _GdkWaylandDisplay
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guint have_egl_buffer_age : 1;
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guint have_egl_swap_buffers_with_damage : 1;
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guint have_egl_surfaceless_context : 1;
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+ EGLint egl_min_swap_interval;
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};
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struct _GdkWaylandDisplayClass
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diff --git a/gdk/wayland/gdkglcontext-wayland.c b/gdk/wayland/gdkglcontext-wayland.c
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index 6573688..254900d 100644
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--- a/gdk/wayland/gdkglcontext-wayland.c
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+++ b/gdk/wayland/gdkglcontext-wayland.c
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@@ -369,6 +369,7 @@ gdk_wayland_display_init_gl (GdkDisplay *display)
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static gboolean
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find_eglconfig_for_window (GdkWindow *window,
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EGLConfig *egl_config_out,
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+ EGLint *min_swap_interval_out,
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GError **error)
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{
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GdkDisplay *display = gdk_window_get_display (window);
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@@ -376,7 +377,7 @@ find_eglconfig_for_window (GdkWindow *window,
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GdkVisual *visual = gdk_window_get_visual (window);
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EGLint attrs[MAX_EGL_ATTRS];
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EGLint count;
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- EGLConfig *configs;
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+ EGLConfig *configs, chosen_config;
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gboolean use_rgba;
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int i = 0;
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@@ -429,9 +430,20 @@ find_eglconfig_for_window (GdkWindow *window,
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}
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/* Pick first valid configuration i guess? */
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+ chosen_config = configs[0];
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+
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+ if (!eglGetConfigAttrib (display_wayland->egl_display, chosen_config,
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+ EGL_MIN_SWAP_INTERVAL, min_swap_interval_out))
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+ {
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+ g_set_error_literal (error, GDK_GL_ERROR,
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+ GDK_GL_ERROR_NOT_AVAILABLE,
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+ "Could not retrieve the minimum swap interval");
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+ g_free (configs);
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+ return FALSE;
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+ }
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if (egl_config_out != NULL)
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- *egl_config_out = configs[0];
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+ *egl_config_out = chosen_config;
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g_free (configs);
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@@ -465,7 +477,9 @@ gdk_wayland_window_create_gl_context (GdkWindow *window,
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return NULL;
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}
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- if (!find_eglconfig_for_window (window, &config, error))
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+ if (!find_eglconfig_for_window (window, &config,
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+ &display_wayland->egl_min_swap_interval,
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+ error))
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return NULL;
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context = g_object_new (GDK_TYPE_WAYLAND_GL_CONTEXT,
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@@ -543,5 +557,10 @@ gdk_wayland_display_make_gl_context_current (GdkDisplay *display,
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return FALSE;
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}
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+ if (display_wayland->egl_min_swap_interval == 0)
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+ eglSwapInterval (display_wayland->egl_display, 0);
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+ else
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+ g_debug ("Can't disable GL swap interval");
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+
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return TRUE;
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}
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--
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cgit v0.12
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@ -18,13 +18,16 @@
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Name: gtk3
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Version: 3.22.6
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Release: 1%{?dist}
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Release: 2%{?dist}
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Summary: The GIMP ToolKit (GTK+), a library for creating GUIs for X
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License: LGPLv2+
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URL: http://www.gtk.org
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Source0: http://download.gnome.org/sources/gtk+/3.22/gtk+-%{version}.tar.xz
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# https://bugzilla.gnome.org/show_bug.cgi?id=769835
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Patch0: disable-egl-swap-interval.patch
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BuildRequires: pkgconfig(atk) >= %{atk_version}
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BuildRequires: pkgconfig(atk-bridge-2.0)
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BuildRequires: pkgconfig(glib-2.0) >= %{glib2_version}
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@ -161,6 +164,7 @@ the functionality of the installed %{name} package.
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%prep
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%setup -q -n gtk+-%{version}
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%patch0 -p1 -b .egl-swap-interval
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%build
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(if ! test -x configure; then NOCONFIGURE=1 ./autogen.sh; CONFIGFLAGS=--enable-gtk-doc; fi;
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@ -333,6 +337,9 @@ gtk-query-immodules-3.0-%{__isa_bits} --update-cache
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%{_datadir}/installed-tests
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%changelog
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* Tue Jan 10 2017 Michael Catanzaro <mcatanzaro@gnome.org> - 3.22.6-2
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- Add patch for GNOME #769835
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* Thu Jan 05 2017 Kalev Lember <klember@redhat.com> - 3.22.6-1
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- Update to 3.22.6
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