diff --git a/imgui.cpp b/imgui.cpp
index 77416a8..df7309a 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -7587,6 +7587,7 @@
     if ((col >> 24) == 0)
         return;
 
+    // FIXME-OPT: This is wasting draw calls.
     const bool push_texture_id = texture_id_stack.empty() || user_texture_id != texture_id_stack.back();
     if (push_texture_id)
         PushTextureID(user_texture_id);