From 5515b9d9b39c6d398bbd6e44542de75ab461214f Mon Sep 17 00:00:00 2001
From: WinterSnowfall <WinterSnowfall@users.noreply.github.com>
Date: Tue, 26 Nov 2024 00:16:04 +0200
Subject: [PATCH] [d3d9] Prevent device child refcount underrun

---
 src/d3d9/d3d9_device_child.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/d3d9/d3d9_device_child.h b/src/d3d9/d3d9_device_child.h
index 433a269ac8b..82b22ff71e5 100644
--- a/src/d3d9/d3d9_device_child.h
+++ b/src/d3d9/d3d9_device_child.h
@@ -25,6 +25,10 @@ namespace dxvk {
     }
     
     ULONG STDMETHODCALLTYPE Release() {
+      // ignore Release calls on objects with 0 refCount
+      if(unlikely(!this->m_refCount))
+        return this->m_refCount;
+
       uint32_t refCount = --this->m_refCount;
       if (unlikely(!refCount)) {
         auto* pDevice = GetDevice();