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offscreen-effect: Use actor's opacity_override when redirecting painting

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Override the actor's paint opacity so that it will appear fully opaque in
the offscreen surface. This avoids multiple multiplications of an actor's
opacity.

Fixes http://bugzilla.clutter-project.org/show_bug.cgi?id=2541
This commit is contained in:
Chris Lord 2011-02-03 14:36:55 +00:00
parent b2ea7d1352
commit 442d8c3f2e
1 changed files with 9 additions and 0 deletions
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9
clutter/clutter-offscreen-effect.c
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@ -251,6 +251,12 @@ clutter_offscreen_effect_pre_paint (ClutterEffect *effect)
cogl_push_matrix ();
/* Override the actor's opacity to fully opaque - we paint the offscreen
* texture with the actor's paint opacity, so we need to do this to avoid
* multiplying the opacity twice.
*/
_clutter_actor_set_opacity_override (priv->actor, 0xff);
return TRUE;
}
@ -307,6 +313,9 @@ clutter_offscreen_effect_post_paint (ClutterEffect *effect)
cogl_matrix_translate (&modelview, priv->x_offset, priv->y_offset, 0.0f);
cogl_set_modelview_matrix (&modelview);
/* Remove the opacity override */
_clutter_actor_set_opacity_override (priv->actor, -1);
/* paint the target material; this is virtualized for
* sub-classes that require special hand-holding
*/