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backend: Provide a default get_features() implementation

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Continue gutting ClutterBackendCogl; get_features() is the last bit that
still does something, but now we can use the Cogl API.
This commit is contained in:
Emmanuele Bassi
2011-11-04 16:13:04 +00:00
parent b97324ee9f
commit 80fdbeb954
5 changed files with 49 additions and 77 deletions
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34
clutter/clutter-backend.c
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@ -356,6 +356,39 @@ clutter_backend_real_ensure_context (ClutterBackend *backend,
cogl_set_framebuffer (framebuffer);
}
static ClutterFeatureFlags
clutter_backend_real_get_features (ClutterBackend *backend)
{
ClutterFeatureFlags flags = 0;
if (cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_MULTIPLE_ONSCREEN))
{
CLUTTER_NOTE (BACKEND, "Cogl supports multiple onscreen framebuffers");
flags |= CLUTTER_FEATURE_STAGE_MULTIPLE;
}
else
{
CLUTTER_NOTE (BACKEND, "Cogl only supports one onscreen framebuffer");
flags |= CLUTTER_FEATURE_STAGE_STATIC;
}
if (cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_SWAP_THROTTLE))
{
CLUTTER_NOTE (BACKEND, "Cogl supports swap buffers throttling");
flags |= CLUTTER_FEATURE_SYNC_TO_VBLANK;
}
else
CLUTTER_NOTE (BACKEND, "Cogl doesn't support swap buffers throttling");
if (cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_SWAP_BUFFERS_EVENT))
{
CLUTTER_NOTE (BACKEND, "Cogl supports swap buffers complete events");
flags |= CLUTTER_FEATURE_SWAP_EVENTS;
}
return flags;
}
static void
clutter_backend_real_redraw (ClutterBackend *backend,
ClutterStage *stage)
@ -540,6 +573,7 @@ clutter_backend_class_init (ClutterBackendClass *klass)
klass->translate_event = clutter_backend_real_translate_event;
klass->create_context = clutter_backend_real_create_context;
klass->ensure_context = clutter_backend_real_ensure_context;
klass->get_features = clutter_backend_real_get_features;
klass->redraw = clutter_backend_real_redraw;
}