From c9657be1ded4016b383de1bb49bfaa7d91c85af8 Mon Sep 17 00:00:00 2001
From: Baranob_Ilya <logotipick@gmail.com>
Date: Mon, 12 Jun 2023 12:34:34 +0400
Subject: [PATCH] Forgot to add KHR_audio to used extensions

---
 tiny_gltf.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/tiny_gltf.h b/tiny_gltf.h
index 1ddd172..77fc386 100644
--- a/tiny_gltf.h
+++ b/tiny_gltf.h
@@ -7955,6 +7955,19 @@ static void SerializeGltfModel(const Model *model, detail::json &o) {
     detail::JsonAddMember(ext_j, "KHR_audio", std::move(khr_audio_cmn));
 
     detail::JsonAddMember(o, "extensions", std::move(ext_j));
+
+    // Also add "KHR_audio" to `extensionsUsed`
+    {
+      auto has_khr_audio =
+          std::find_if(extensionsUsed.begin(), extensionsUsed.end(),
+                       [](const std::string &s) {
+                         return (s.compare("KHR_audio") == 0);
+                       });
+
+      if (has_khr_audio == extensionsUsed.end()) {
+        extensionsUsed.push_back("KHR_audio");
+      }
+    }
   }
 
   // Extensions used