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offscreen-effect: Traslate the modelview with the offsets

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Instead of using the stage offsets when painting we can simply traslate
the current modelview. This allows sub-classes to fully override the
paint_target() virtual function without chaining up.
This commit is contained in:
Emmanuele Bassi 2010-06-10 17:35:56 +01:00
parent 8d22fea31c
commit fa381cc361
1 changed files with 7 additions and 5 deletions
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12
clutter/clutter-offscreen-effect.c
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@ -316,12 +316,12 @@ clutter_offscreen_effect_real_paint_target (ClutterOffscreenEffect *effect)
/* paint the texture at the same position as the actor would be,
* in Stage coordinates, since we set up the modelview matrix to
* be exactly as the stage sets it up
* be exactly as the stage sets it up, plus the eventual offsets
* due to offscreen effects stacking
*/
cogl_rectangle_with_texture_coords (priv->x_offset,
priv->y_offset,
priv->x_offset + priv->target_width,
priv->y_offset + priv->target_height,
cogl_rectangle_with_texture_coords (0, 0,
priv->target_width,
priv->target_height,
0.0, 0.0,
1.0, 1.0);
}
@ -364,6 +364,8 @@ clutter_offscreen_effect_post_paint (ClutterEffect *effect)
cogl_push_matrix ();
cogl_translate (priv->x_offset, priv->y_offset, 0.0f);
/* paint the target material; this is virtualized for
* sub-classes that require special hand-holding
*/