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Neil Roberts authored
This is used as an alternative to calling clutter_shader_effect_set_shader_source. A ClutterShaderEffect subclass is now expected to implement this method to return the source for the effect that will be used for all instances of this subclass. It is only called once regardless of the number of instances created. That way Clutter can avoid recompiling the shader source for every new instance of the effect. https://bugzilla.gnome.org/show_bug.cgi?id=660512 Reviewed-by: Emmanuele Bassi <ebassi@linux.intel.com>
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