diff --git a/layers/parameter_validation.h b/layers/parameter_validation.h
index 8acd34b..ced0810 100644
--- a/layers/parameter_validation.h
+++ b/layers/parameter_validation.h
@@ -27,6 +27,7 @@
 #include <sstream>
 #include <bitset>
 #include <mutex>
+#include <unordered_map>
 #include <unordered_set>
 
 #include "vulkan/vulkan.h"
@@ -81,6 +82,13 @@
     VkDevice device = VK_NULL_HANDLE;
     DeviceExtensions extensions;
 
+    struct SubpassesUsageStates {
+        std::unordered_set<uint32_t> subpasses_using_color_attachment;
+        std::unordered_set<uint32_t> subpasses_using_depthstencil_attachment;
+    };
+
+    std::unordered_map<VkRenderPass, SubpassesUsageStates> renderpasses_states;
+
     VkLayerDispatchTable dispatch_table = {};
 };