From 91da29972987bb4d715a09d94ecd2cefd3a487d4 Mon Sep 17 00:00:00 2001
From: Syoyo Fujita <syoyo@lighttransport.com>
Date: Wed, 15 Jul 2020 13:52:39 +0900
Subject: [PATCH] Fix inequality. Should allow 0 for bufferView.

---
 tiny_gltf.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tiny_gltf.h b/tiny_gltf.h
index 57d6283..88e1093 100644
--- a/tiny_gltf.h
+++ b/tiny_gltf.h
@@ -5711,7 +5711,8 @@ bool TinyGLTF::LoadFromString(Model *model, std::string *err, std::string *warn,
         for (auto &attribute : target) {
           auto bufferView =
               model->accessors[size_t(attribute.second)].bufferView;
-          if (bufferView > 0) {
+          // bufferView could be null(-1) for sparse morph target
+          if (bufferView >= 0) {
             model->bufferViews[size_t(bufferView)].target =
                 TINYGLTF_TARGET_ARRAY_BUFFER;
           }