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shaped-texture: Invalidate mask texture when main texture changes size

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We currently rely only on MetaWindowActor to update the mask
texture. This isn't good enough since we might get asked to use the
mask (e.g. via meta_shaped_texture_get_image() ) after having a new
texture size but before MetaWindowActor decides to update the mask in
which case we might crash since cogl_texture_new_from_sub_texture()
might fail with an early return such as

Cogl-CRITICAL **: cogl_sub_texture_new: assertion 'sub_x + sub_width
<= next_width' failed

https://bugzilla.gnome.org/show_bug.cgi?id=762639
This commit is contained in:
Rui Matos 2016-02-24 19:24:09 +01:00
parent f6ba3bdfc2
commit ca1b4382c0
1 changed files with 1 additions and 0 deletions
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src/compositor/meta-shaped-texture.c
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@ -303,6 +303,7 @@ set_cogl_texture (MetaShapedTexture *stex,
{
priv->tex_width = width;
priv->tex_height = height;
meta_shaped_texture_set_mask_texture (stex, NULL);
clutter_actor_queue_relayout (CLUTTER_ACTOR (stex));
g_signal_emit (stex, signals[SIZE_CHANGED], 0);
}