From 466debe9a46ab7e0e7ef92e8faed8f526d0467b6 Mon Sep 17 00:00:00 2001
From: baldurk <baldurk@baldurk.org>
Date: Wed, 12 Aug 2020 14:47:59 +0100
Subject: [PATCH] Clean background frame references every 20 submits

* This means the background references array won't build up even for programs
  that don't present.
---
 renderdoc/driver/vulkan/vk_core.h                   | 2 ++
 renderdoc/driver/vulkan/wrappers/vk_queue_funcs.cpp | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/renderdoc/driver/vulkan/vk_core.h b/renderdoc/driver/vulkan/vk_core.h
index 2f518e739..d85ebe2c0 100644
--- a/renderdoc/driver/vulkan/vk_core.h
+++ b/renderdoc/driver/vulkan/vk_core.h
@@ -750,6 +750,8 @@ private:
   rdcarray<VkResourceRecord *> m_ForcedReferences;
   Threading::CriticalSection m_ForcedReferencesLock;
 
+  volatile int64_t m_QueueCounter = 0;
+
   rdcarray<VkResourceRecord *> GetForcedReferences()
   {
     rdcarray<VkResourceRecord *> ret;
diff --git a/renderdoc/driver/vulkan/wrappers/vk_queue_funcs.cpp b/renderdoc/driver/vulkan/wrappers/vk_queue_funcs.cpp
index dc3367acd..a08e0e51c 100644
--- a/renderdoc/driver/vulkan/wrappers/vk_queue_funcs.cpp
+++ b/renderdoc/driver/vulkan/wrappers/vk_queue_funcs.cpp
@@ -975,6 +975,12 @@ VkResult WrappedVulkan::vkQueueSubmit(VkQueue queue, uint32_t submitCount,
             sub->bakedCommands->AddResourceReferences(GetResourceManager());
         }
       }
+
+      // every 20 submits clean background references, in case the application isn't presenting.
+      if((Atomic::Inc64(&m_QueueCounter) % 20) == 0)
+      {
+        GetResourceManager()->CleanBackgroundFrameReferences();
+      }
     }
 
     if(capframe)