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889dcee384
Previously the counter for the number of layers was only updated whenever the texture handle for a layer changes. However there are many other ways for a new layer to be created for example by setting a layer combine constant. Also by default the texture on a layer is COGL_INVALID_HANDLE so if the application tries to create an explicit layer with no texture by calling cogl_material_set_layer with COGL_INVALID_HANDLE then it also wouldn't update the count. This patch fixes that by incrementing the count in cogl_material_get_layer instead. This function is called by all functions that may end up creating a layer so it seems like the most appropriate place. http://bugzilla.openedhand.com/show_bug.cgi?id=2132