From 75c66e35c68a791ab5415b1a120cc07321ad2e79 Mon Sep 17 00:00:00 2001
From: iwubcode <iwubcode@users.noreply.github.com>
Date: Thu, 20 Nov 2025 22:12:09 -0600
Subject: [PATCH] VideoCommon: add method to async shader compiler to clear
 pending/completed work (used on shutdown), this will in turn clear up any
 resources that the worker items may have held onto

---
 Source/Core/VideoCommon/AsyncShaderCompiler.cpp     | 13 +++++++++++++
 Source/Core/VideoCommon/AsyncShaderCompiler.h       |  3 +++
 .../GraphicsModSystem/Runtime/CustomShaderCache.cpp |  6 ++++++
 Source/Core/VideoCommon/ShaderCache.cpp             |  3 +++
 4 files changed, 25 insertions(+)

diff --git a/Source/Core/VideoCommon/AsyncShaderCompiler.cpp b/Source/Core/VideoCommon/AsyncShaderCompiler.cpp
index c69354628d..e312525eb9 100644
--- a/Source/Core/VideoCommon/AsyncShaderCompiler.cpp
+++ b/Source/Core/VideoCommon/AsyncShaderCompiler.cpp
@@ -68,6 +68,19 @@ bool AsyncShaderCompiler::HasCompletedWork()
   return !m_completed_work.empty();
 }
 
+void AsyncShaderCompiler::ClearAllWork()
+{
+  {
+    std::lock_guard<std::mutex> guard(m_pending_work_lock);
+    m_pending_work.clear();
+  }
+
+  {
+    std::lock_guard<std::mutex> guard(m_completed_work_lock);
+    m_completed_work.clear();
+  }
+}
+
 bool AsyncShaderCompiler::WaitUntilCompletion(
     const std::function<void(size_t, size_t)>& progress_callback)
 {
diff --git a/Source/Core/VideoCommon/AsyncShaderCompiler.h b/Source/Core/VideoCommon/AsyncShaderCompiler.h
index 8773891d61..ffcca0c4ec 100644
--- a/Source/Core/VideoCommon/AsyncShaderCompiler.h
+++ b/Source/Core/VideoCommon/AsyncShaderCompiler.h
@@ -49,6 +49,9 @@ public:
   bool HasPendingWork();
   bool HasCompletedWork();
 
+  // Clears both pending and completed work
+  void ClearAllWork();
+
   // Calls progress_callback periodically, with completed_items, and total_items.
   // Returns false if interrupted.
   bool WaitUntilCompletion(const std::function<void(size_t, size_t)>& progress_callback);
diff --git a/Source/Core/VideoCommon/GraphicsModSystem/Runtime/CustomShaderCache.cpp b/Source/Core/VideoCommon/GraphicsModSystem/Runtime/CustomShaderCache.cpp
index a3c98ee9d7..0c4cf43227 100644
--- a/Source/Core/VideoCommon/GraphicsModSystem/Runtime/CustomShaderCache.cpp
+++ b/Source/Core/VideoCommon/GraphicsModSystem/Runtime/CustomShaderCache.cpp
@@ -24,10 +24,16 @@ CustomShaderCache::CustomShaderCache()
 CustomShaderCache::~CustomShaderCache()
 {
   if (m_async_shader_compiler)
+  {
     m_async_shader_compiler->StopWorkerThreads();
+    m_async_shader_compiler->ClearAllWork();
+  }
 
   if (m_async_uber_shader_compiler)
+  {
     m_async_uber_shader_compiler->StopWorkerThreads();
+    m_async_uber_shader_compiler->ClearAllWork();
+  }
 }
 
 void CustomShaderCache::RetrieveAsyncShaders()
diff --git a/Source/Core/VideoCommon/ShaderCache.cpp b/Source/Core/VideoCommon/ShaderCache.cpp
index a3d07368f6..03dc21c937 100644
--- a/Source/Core/VideoCommon/ShaderCache.cpp
+++ b/Source/Core/VideoCommon/ShaderCache.cpp
@@ -109,7 +109,10 @@ void ShaderCache::Shutdown()
   // This may leave shaders uncommitted to the cache, but it's better than blocking shutdown
   // until everything has finished compiling.
   if (m_async_shader_compiler)
+  {
     m_async_shader_compiler->StopWorkerThreads();
+    m_async_shader_compiler->ClearAllWork();
+  }
 
   ClosePipelineUIDCache();
 }