[unity] Fix GetRemappedClone not using sourceMaterial when non-pma.

spine-unity/Assets/spine-unity/Modules/AttachmentTools/AttachmentTools.cs

@@ -1089,7 +1089,7 @@ namespace Spine.Unity.Modules.AttachmentTools {
 		/// <param name="cloneMeshAsLinked">If <c>true</c> MeshAttachments will be cloned as linked meshes and will inherit animation from the original attachment.</param>
 		/// <param name="useOriginalRegionSize">If <c>true</c> the size of the original attachment will be followed, instead of using the Sprite size.</param>
 		public static Attachment GetRemappedClone (this Attachment o, Sprite sprite, Material sourceMaterial, bool premultiplyAlpha = true, bool cloneMeshAsLinked = true, bool useOriginalRegionSize = false) {
-			var atlasRegion = premultiplyAlpha ? sprite.ToAtlasRegionPMAClone(sourceMaterial) : sprite.ToAtlasRegion(false);
+			var atlasRegion = premultiplyAlpha ? sprite.ToAtlasRegionPMAClone(sourceMaterial) : sprite.ToAtlasRegion(new Material(sourceMaterial) { mainTexture = sprite.texture });
 			return o.GetRemappedClone(atlasRegion, cloneMeshAsLinked, useOriginalRegionSize, 1f/sprite.pixelsPerUnit);
 		}