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backend: Provide an implementation of ensure_backend()

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We can do it for all Cogl-based backends.
This commit is contained in:
Emmanuele Bassi 2011-11-03 16:45:56 +00:00
parent e374c2bd89
commit 790c0d1f91
1 changed files with 24 additions and 0 deletions
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24
clutter/clutter-backend.c
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@ -50,6 +50,7 @@
#include "clutter-profile.h"
#include "clutter-stage-manager-private.h"
#include "clutter-stage-private.h"
#include "clutter-stage-window.h"
#include "clutter-version.h"
#include <cogl/cogl.h>
@ -205,6 +206,27 @@ clutter_backend_real_font_changed (ClutterBackend *backend)
CLUTTER_NOTE (BACKEND, "Units per em: %.2f", priv->units_per_em);
}
static void
clutter_backend_real_ensure_context (ClutterBackend *backend,
ClutterStage *stage)
{
ClutterStageWindow *stage_impl;
CoglFramebuffer *framebuffer;
if (stage == NULL)
return;
stage_impl = _clutter_stage_get_window (stage);
if (stage_impl == NULL)
return;
framebuffer = _clutter_stage_window_get_active_framebuffer (stage_impl);
if (framebuffer == NULL)
return;
cogl_set_framebuffer (framebuffer);
}
static void
clutter_backend_real_redraw (ClutterBackend *backend,
ClutterStage *stage)
@ -316,7 +338,9 @@ clutter_backend_class_init (ClutterBackendClass *klass)
klass->resolution_changed = clutter_backend_real_resolution_changed;
klass->font_changed = clutter_backend_real_font_changed;
klass->translate_event = clutter_backend_real_translate_event;
klass->ensure_context = clutter_backend_real_ensure_context;
klass->redraw = clutter_backend_real_redraw;
}