From c25675f75e8b5dfbd9d00f2cc90f275cc3d07c41 Mon Sep 17 00:00:00 2001
From: Nathan Sweet <nathan.sweet@gmail.com>
Date: Mon, 30 Oct 2017 14:15:27 +0100
Subject: [PATCH] Disallow additive on track 0.

---
 .../src/com/esotericsoftware/spine/SkeletonViewer.java          | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/SkeletonViewer.java b/spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/SkeletonViewer.java
index 1bd2cfbbf..37a3f34d5 100644
--- a/spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/SkeletonViewer.java
+++ b/spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/SkeletonViewer.java
@@ -496,6 +496,8 @@ public class SkeletonViewer extends ApplicationAdapter {
 
 			alphaSlider.setValue(1);
 			alphaSlider.setDisabled(true);
+			
+			addCheckbox.setDisabled(true);
 
 			window.setMovable(false);
 			window.setResizable(false);