X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fsrc%2Fsynfig%2Flayer_duplicate.cpp;h=32b9baa2f11681d4d444ac6d2f41bc52dddc2606;hb=791af4d0deaf3da6360107ffee4cde1862a3d8c1;hp=922704a989b502700e601f3069059c4e7fc32542;hpb=268b63024cb094deda14ea7ae1f30c98dd4495cc;p=synfig.git

diff --git a/synfig-core/trunk/src/synfig/layer_duplicate.cpp b/synfig-core/trunk/src/synfig/layer_duplicate.cpp
index 922704a..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
 	{
@@ -185,7 +186,7 @@ Layer_Duplicate::accelerated_render(Context context,Surface *surface,int quality
 		Surface::alpha_pen apen(surface->begin());
 		apen.set_alpha(1.0);
 		// \todo have a checkbox allowing use of 'behind' to reverse the order?
-		apen.set_blend_method(blend_method);
+		apen.set_blend_method(i ? blend_method : Color::BLEND_COMPOSITE);
 		tmp.blit_to(apen);
 		i++;
 	} while (duplicate_param->step(time_cur));