From 1ccf715e3b8a4378926c423166772e53aeab9177 Mon Sep 17 00:00:00 2001
From: Brad Davis <bdavis@saintandreas.org>
Date: Tue, 14 Mar 2017 09:09:14 -0700
Subject: [PATCH] Don't crash when failing to convert a texture to KTX format

---
 .../src/model-networking/TextureCache.cpp     | 22 +++++++++++--------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/libraries/model-networking/src/model-networking/TextureCache.cpp b/libraries/model-networking/src/model-networking/TextureCache.cpp
index b9977e33d8..386e9239a4 100644
--- a/libraries/model-networking/src/model-networking/TextureCache.cpp
+++ b/libraries/model-networking/src/model-networking/TextureCache.cpp
@@ -526,16 +526,20 @@ void ImageReader::read() {
 
         // Save the image into a KTXFile
         auto ktx = gpu::Texture::serialize(*texture);
-        const char* data = reinterpret_cast<const char*>(ktx->_storage->data());
-        size_t length = ktx->_storage->size();
-        KTXFilePointer file;
-        auto& ktxCache = DependencyManager::get<TextureCache>()->_ktxCache;
-        if (!ktx || !(file = ktxCache.writeFile(data, KTXCache::Metadata(_hash, length)))) {
-            qCWarning(modelnetworking) << _url << "file cache failed";
+        if (ktx) {
+            const char* data = reinterpret_cast<const char*>(ktx->_storage->data());
+            size_t length = ktx->_storage->size();
+            KTXFilePointer file;
+            auto& ktxCache = DependencyManager::get<TextureCache>()->_ktxCache;
+            if (!ktx || !(file = ktxCache.writeFile(data, KTXCache::Metadata(_hash, length)))) {
+                qCWarning(modelnetworking) << _url << "file cache failed";
+            } else {
+                resource.staticCast<NetworkTexture>()->_file = file;
+                auto ktx = file->getKTX();
+                texture->setKtxBacking(ktx);
+            }
         } else {
-            resource.staticCast<NetworkTexture>()->_file = file;
-            auto ktx = file->getKTX();
-            texture->setKtxBacking(ktx);
+            qCWarning(modelnetworking) << "Unable to serialize texture to KTX " << _url;
         }
     }