X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fsrc%2Fsynfig%2Flayer_duplicate.cpp;h=32b9baa2f11681d4d444ac6d2f41bc52dddc2606;hb=791af4d0deaf3da6360107ffee4cde1862a3d8c1;hp=657723701475eb8fd36593a49f69b0876a80c41b;hpb=c47c55f3496571ee27d1ad0f9eae1974a50d82eb;p=synfig.git

diff --git a/synfig-core/trunk/src/synfig/layer_duplicate.cpp b/synfig-core/trunk/src/synfig/layer_duplicate.cpp
index 6577237..32b9baa 100644
--- a/synfig-core/trunk/src/synfig/layer_duplicate.cpp
+++ b/synfig-core/trunk/src/synfig/layer_duplicate.cpp
@@ -173,6 +173,7 @@ Layer_Duplicate::accelerated_render(Context context,Surface *surface,int quality
 	Color::BlendMethod blend_method(get_blend_method());
 	int steps = duplicate_param->count_steps(time_cur);
 
+	Mutex::Lock lock(mutex);
 	duplicate_param->reset_index(time_cur);
 	do
 	{