1 files changed, 6 insertions, 0 deletions
diff --git a/indra/newview/gltfscenemanager.cpp b/indra/newview/gltfscenemanager.cpp
index bf3fada3bd..9a381f9ba6 100644
--- a/indra/newview/gltfscenemanager.cpp
+++ b/indra/newview/gltfscenemanager.cpp
@@ -643,6 +643,12 @@ void GLTFSceneManager::render(Asset& asset, U8 variant)
         return;
     }
 
+    if (gGLTFPBRMetallicRoughnessProgram.mGLTFVariants.size() <= variant)
+    {
+        llassert(false); // mGLTFVariants should have been initialized
+        return;
+    }
+
     for (U32 ds = 0; ds < 2; ++ds)
     {
         RenderData& rd = asset.mRenderData[ds];