From 0fd00e27bb806f7ca29081125e5e58371bda841e Mon Sep 17 00:00:00 2001
From: javguit <63629902+javguit@users.noreply.github.com>
Date: Fri, 10 Sep 2021 06:02:39 -0300
Subject: [PATCH] Fixed compatibility with older AMD/ATI cards when calling
 ADL2_Adapter_FrameMetrics_Caps (#535)

---
 LibreHardwareMonitorLib/Hardware/Gpu/AmdGpu.cs |  2 +-
 LibreHardwareMonitorLib/Interop/AtiAdlxx.cs    | 14 +++++++++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/LibreHardwareMonitorLib/Hardware/Gpu/AmdGpu.cs b/LibreHardwareMonitorLib/Hardware/Gpu/AmdGpu.cs
index 5ca4e17..7d6ca05 100644
--- a/LibreHardwareMonitorLib/Hardware/Gpu/AmdGpu.cs
+++ b/LibreHardwareMonitorLib/Hardware/Gpu/AmdGpu.cs
@@ -131,7 +131,7 @@ namespace LibreHardwareMonitor.Hardware.Gpu
             int enabled = 0;
             int version = 0;
 
-            if (AtiAdlxx.ADL2_Adapter_FrameMetrics_Caps(_context, _adapterIndex, ref supported) == AtiAdlxx.ADLStatus.ADL_OK)
+            if (AtiAdlxx.ADL_Method_Exists("ADL2_Adapter_FrameMetrics_Caps") && AtiAdlxx.ADL2_Adapter_FrameMetrics_Caps(_context, _adapterIndex, ref supported) == AtiAdlxx.ADLStatus.ADL_OK)
             {
                 if (supported == AtiAdlxx.ADL_TRUE && AtiAdlxx.ADL2_Adapter_FrameMetrics_Start(_context, _adapterIndex, 0) == AtiAdlxx.ADLStatus.ADL_OK)
                 {
diff --git a/LibreHardwareMonitorLib/Interop/AtiAdlxx.cs b/LibreHardwareMonitorLib/Interop/AtiAdlxx.cs
index e4a56c8..4f6abc5 100644
--- a/LibreHardwareMonitorLib/Interop/AtiAdlxx.cs
+++ b/LibreHardwareMonitorLib/Interop/AtiAdlxx.cs
@@ -130,7 +130,19 @@ namespace LibreHardwareMonitor.Interop
         public static extern ADLStatus ADL2_Adapter_FrameMetrics_Start(IntPtr context, int adapterIndex, int displayIndex);
 
         [DllImport(DllName, CallingConvention = CallingConvention.Cdecl)]
-        public static extern ADLStatus ADL2_Adapter_FrameMetrics_Stop(IntPtr context, int adapterIndex, int displayIndex);       
+        public static extern ADLStatus ADL2_Adapter_FrameMetrics_Stop(IntPtr context, int adapterIndex, int displayIndex);
+
+        public static bool ADL_Method_Exists(string ADL_Method)
+        {
+            IntPtr module = Kernel32.LoadLibrary(DllName);
+            if (module != IntPtr.Zero)
+            {
+                bool result = Kernel32.GetProcAddress(module, ADL_Method) != IntPtr.Zero;
+                Kernel32.FreeLibrary(module);
+                return result;
+            }
+            return false;
+        }
 
         public static ADLStatus ADL_Main_Control_Create(int enumConnectedAdapters)
         {