diff --git a/zenovis/xinxinoptix/OptiXStuff.h b/zenovis/xinxinoptix/OptiXStuff.h
index f9ba910311..1644843984 100644
--- a/zenovis/xinxinoptix/OptiXStuff.h
+++ b/zenovis/xinxinoptix/OptiXStuff.h
@@ -154,7 +154,7 @@ inline uint CachedPrimitiveTypeFlags = UINT_MAX;
 
 inline bool configPipeline(OptixPrimitiveTypeFlags usesPrimitiveTypeFlags) {
 
-    if (usesPrimitiveTypeFlags == CachedPrimitiveTypeFlags) { return false; }
+    if (CachedPrimitiveTypeFlags != UINT_MAX && (usesPrimitiveTypeFlags&CachedPrimitiveTypeFlags == usesPrimitiveTypeFlags)) { return false; }
     CachedPrimitiveTypeFlags = usesPrimitiveTypeFlags;
 
     pipeline_compile_options = {};