From a3f44cd67e5397d8fb0329ebaa1ea5b7736090ad Mon Sep 17 00:00:00 2001
From: jsjtxietian <jsjtxietian@outlook.com>
Date: Mon, 20 Nov 2023 19:31:14 +0800
Subject: [PATCH] Check nullptr in `_nvapi_disable_threaded_optimization` to
 prevent crash update outdated link

---
 platform/windows/gl_manager_windows_native.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/platform/windows/gl_manager_windows_native.cpp b/platform/windows/gl_manager_windows_native.cpp
index b350786d111..a8c6efcea1f 100644
--- a/platform/windows/gl_manager_windows_native.cpp
+++ b/platform/windows/gl_manager_windows_native.cpp
@@ -104,8 +104,8 @@ static bool nvapi_err_check(const char *msg, int status) {
 }
 
 // On windows we have to disable threaded optimization when using NVIDIA graphics cards
-// to avoid stuttering, see https://github.com/microsoft/vscode-cpptools/issues/6592
-// also see https://github.com/Ryujinx/Ryujinx/blob/master/Ryujinx.Common/GraphicsDriver/NVThreadedOptimization.cs
+// to avoid stuttering, see see https://stackoverflow.com/questions/36959508/nvidia-graphics-driver-causing-noticeable-frame-stuttering/37632948
+// also see https://github.com/Ryujinx/Ryujinx/blob/master/src/Ryujinx.Common/GraphicsDriver/NVThreadedOptimization.cs
 void GLManagerNative_Windows::_nvapi_disable_threaded_optimization() {
 	HMODULE nvapi = 0;
 #ifdef _WIN64
@@ -149,6 +149,10 @@ void GLManagerNative_Windows::_nvapi_disable_threaded_optimization() {
 
 	NvDRSSessionHandle session_handle;
 
+	if (NvAPI_DRS_CreateSession == nullptr) {
+		return;
+	}
+
 	if (!nvapi_err_check("NVAPI: Error creating DRS session", NvAPI_DRS_CreateSession(&session_handle))) {
 		NvAPI_Unload();
 		return;