From 2d222f22c7b7d41252b4cbb4adf6a4444ad9a514 Mon Sep 17 00:00:00 2001
From: Cacodemon345 <wahil1976@outlook.com>
Date: Sun, 23 Apr 2023 20:39:34 +0600
Subject: [PATCH] qt: Destroy existing Direct3D 9 devices if it exists

---
 src/qt/qt_d3d9renderer.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/qt/qt_d3d9renderer.cpp b/src/qt/qt_d3d9renderer.cpp
index bbbb80e59..f2c9fe9f4 100644
--- a/src/qt/qt_d3d9renderer.cpp
+++ b/src/qt/qt_d3d9renderer.cpp
@@ -24,11 +24,16 @@ D3D9Renderer::D3D9Renderer(QWidget *parent, int monitor_index)
 
     windowHandle = (HWND) winId();
     surfaceInUse = true;
+    finalized = true;
 
     RendererCommon::parentWidget = parent;
 
     this->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
     this->m_monitor_index = monitor_index;
+
+    d3d9surface = nullptr;
+    d3d9dev = nullptr;
+    d3d9 = nullptr;
 }
 
 D3D9Renderer::~D3D9Renderer()
@@ -67,6 +72,7 @@ D3D9Renderer::hideEvent(QHideEvent *event)
 void
 D3D9Renderer::showEvent(QShowEvent *event)
 {
+    if (d3d9) finalize();
     params = {};
 
     if (FAILED(Direct3DCreate9Ex(D3D_SDK_VERSION, &d3d9))) {