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compositor: Handle GL video memory purged errors

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Emit a signal so that interested parties can recreate their FBOs and
queue a full scene graph redraw to ensure we don't end up showing
graphical artifacts.

This relies on the GL driver supporting the
NV_robustness_video_memory_purge extension and cogl creating a
suitable GL context. For now we only make use of it with the X backend
since the only driver with which this is useful is NVIDIA.

https://bugzilla.gnome.org/show_bug.cgi?id=739178
This commit is contained in:
Rui Matos 2016-05-20 19:22:23 +02:00
parent 7ed14e0ee8
commit 7f6bcea331
4 changed files with 38 additions and 2 deletions
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2
src/backends/x11/meta-backend-x11.c
View File

@ -884,6 +884,8 @@ meta_backend_x11_init (MetaBackendX11 *x11)
{
MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
clutter_x11_request_reset_on_video_memory_purge ();
/* We do X11 event retrieval ourselves */
clutter_x11_disable_event_retrieval ();

1
src/compositor/compositor-private.h
View File

@ -31,6 +31,7 @@ struct _MetaCompositor
CoglOnscreen *onscreen;
CoglFrameClosure *frame_closure;
CoglContext *context;
/* Used for unredirecting fullscreen windows */
guint disable_unredirect_count;

28
src/compositor/compositor.c
View File

@ -1021,8 +1021,7 @@ frame_callback (CoglOnscreen *onscreen,
* is fairly fast, so calling it twice and subtracting to get a
* nearly-zero number is acceptable, if a litle ugly.
*/
CoglContext *context = cogl_framebuffer_get_context (COGL_FRAMEBUFFER (onscreen));
gint64 current_cogl_time = cogl_get_clock_time (context);
gint64 current_cogl_time = cogl_get_clock_time (compositor->context);
gint64 current_monotonic_time = g_get_monotonic_time ();
presentation_time =
@ -1052,6 +1051,7 @@ meta_pre_paint_func (gpointer data)
frame_callback,
compositor,
NULL);
compositor->context = cogl_framebuffer_get_context (COGL_FRAMEBUFFER (compositor->onscreen));
}
if (compositor->windows == NULL)
@ -1105,6 +1105,7 @@ static gboolean
meta_post_paint_func (gpointer data)
{
MetaCompositor *compositor = data;
CoglGraphicsResetStatus status;
if (compositor->frame_has_updated_xsurfaces)
{
@ -1114,6 +1115,29 @@ meta_post_paint_func (gpointer data)
compositor->frame_has_updated_xsurfaces = FALSE;
}
status = cogl_get_graphics_reset_status (compositor->context);
switch (status)
{
case COGL_GRAPHICS_RESET_STATUS_NO_ERROR:
break;
case COGL_GRAPHICS_RESET_STATUS_PURGED_CONTEXT_RESET:
g_signal_emit_by_name (compositor->display, "gl-video-memory-purged");
clutter_actor_queue_redraw (CLUTTER_ACTOR (compositor->stage));
break;
default:
/* The ARB_robustness spec says that, on error, the application
should destroy the old context and create a new one. Since we
don't have the necessary plumbing to do this we'll simply
restart the process. Obviously we can't do this when we are
a wayland compositor but in that case we shouldn't get here
since we don't enable robustness in that case. */
g_assert (!meta_is_wayland_compositor ());
meta_restart (NULL);
break;
}
return TRUE;
}

9
src/core/display.c
View File

@ -125,6 +125,7 @@ enum
SHOW_RESTART_MESSAGE,
RESTART,
SHOW_RESIZE_POPUP,
GL_VIDEO_MEMORY_PURGED,
LAST_SIGNAL
};
@ -342,6 +343,14 @@ meta_display_class_init (MetaDisplayClass *klass)
G_TYPE_BOOLEAN, 4,
G_TYPE_BOOLEAN, META_TYPE_RECTANGLE, G_TYPE_INT, G_TYPE_INT);
display_signals[GL_VIDEO_MEMORY_PURGED] =
g_signal_new ("gl-video-memory-purged",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
g_object_class_install_property (object_class,
PROP_FOCUS_WINDOW,
g_param_spec_object ("focus-window",