From acc84c79a584f25bd4b8eeb8571138bfd79a88dc Mon Sep 17 00:00:00 2001
From: Fatih Uzunoglu <fuzun54@outlook.com>
Date: Thu, 15 Aug 2024 16:14:12 +0300
Subject: [PATCH] Do not link D3D9

On some configurations `d3d9.dll` might not be present,
such as Windows 11 PE, reportedly.
---
 src/plugins/platforms/direct2d/CMakeLists.txt          | 1 -
 src/plugins/platforms/windows/CMakeLists.txt           | 1 -
 src/plugins/platforms/windows/qwindowsopengltester.cpp | 5 ++++-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/plugins/platforms/direct2d/CMakeLists.txt b/src/plugins/platforms/direct2d/CMakeLists.txt
index 4357652207..1e5856be17 100644
--- a/src/plugins/platforms/direct2d/CMakeLists.txt
+++ b/src/plugins/platforms/direct2d/CMakeLists.txt
@@ -78,7 +78,6 @@ qt_internal_add_plugin(QWindowsDirect2DIntegrationPlugin
         winspool
         wtsapi32
         comdlg32
-        d3d9
 )
 
 # Resources:
diff --git a/src/plugins/platforms/windows/CMakeLists.txt b/src/plugins/platforms/windows/CMakeLists.txt
index cb9be899a7..2822184f2e 100644
--- a/src/plugins/platforms/windows/CMakeLists.txt
+++ b/src/plugins/platforms/windows/CMakeLists.txt
@@ -65,7 +65,6 @@ qt_internal_add_plugin(QWindowsIntegrationPlugin
         winspool
         wtsapi32
         comdlg32
-        d3d9
 )
 
 # Resources:
diff --git a/src/plugins/platforms/windows/qwindowsopengltester.cpp b/src/plugins/platforms/windows/qwindowsopengltester.cpp
index 6a790bcc1b..7f40d25bbb 100644
--- a/src/plugins/platforms/windows/qwindowsopengltester.cpp
+++ b/src/plugins/platforms/windows/qwindowsopengltester.cpp
@@ -65,7 +65,10 @@ private:
 
 QDirect3D9Handle::QDirect3D9Handle()
 {
-    m_direct3D9 = Direct3DCreate9(D3D_SDK_VERSION);
+    QSystemLibrary d3d9dll(QStringLiteral("d3d9"));
+    typedef IDirect3D9* (*Direct3DCreate9Func)(UINT);
+    if (const auto direct3DCreate9 = (Direct3DCreate9Func)(d3d9dll.resolve("Direct3DCreate9")))
+        m_direct3D9 = direct3DCreate9(D3D_SDK_VERSION);
 }
 
 QDirect3D9Handle::~QDirect3D9Handle()
-- 
2.45.2