From bc50b09bf4edc7feb78cf293c933543d5d123000 Mon Sep 17 00:00:00 2001
From: Kirill Vainer <shadowislord@gmail.com>
Date: Sat, 9 Sep 2017 13:43:46 -0400
Subject: [PATCH] Don't upload NULL texture slices

---
 .../src/main/java/com/jme3/renderer/opengl/TextureUtil.java   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/jme3-core/src/main/java/com/jme3/renderer/opengl/TextureUtil.java b/jme3-core/src/main/java/com/jme3/renderer/opengl/TextureUtil.java
index 305da6d83..7adc3ff19 100644
--- a/jme3-core/src/main/java/com/jme3/renderer/opengl/TextureUtil.java
+++ b/jme3-core/src/main/java/com/jme3/renderer/opengl/TextureUtil.java
@@ -199,10 +199,12 @@ final class TextureUtil {
                                      format.format,
                                      format.dataType,
                                      data);
-                } else {
+                } else if (data != null) {
                     // For texture arrays, only upload 1 slice at a time.
                     // zoffset specifies slice index, and depth is 1 to indicate
                     // a single texture in the array.
+                    // We don't need to do this for NULL data because the
+                    // main texture storage was already allocated with slice == -1
                     gl2.glTexSubImage3D(target,
                                         level,          // level
                                         0,              // xoffset