Preheat oven to 350 degrees. Grease, flour and parchment line two 9 inch round cake pans. Mix all the dry ingredients together in one bowl. In another bowl mix the melted butter, wine, buttermilk, oil, vanilla and egg yolks. In a clean bowl whip the egg whites until stiff peaks just start to form. Set egg whites aside. Gradually mix the wet butter mixture into the flour using a mixer or hand beater.