add error messages.

Plugins/uDesktopDuplication/uDesktopDuplication/Cursor.cpp

@@ -97,6 +97,7 @@ void Cursor::Draw(
     // Check buffers
     if (!bgraBuffer_ || !buffer_) 
     {
+        Debug::Error("Cursor::UpdateTexture() => no buffer.");
         return;
     }
 

Plugins/uDesktopDuplication/uDesktopDuplication/Duplicator.cpp

@@ -315,7 +315,8 @@ void Duplicator::Duplicate(UINT timeout)
         return;
     }
 
-    auto sharedTextureWrapper = device_->GetCompatibleSharedTexture(texture, lastFrameId_ % 2);
+    //auto sharedTextureWrapper = device_->GetCompatibleSharedTexture(texture, lastFrameId_ % 2);
+    auto sharedTextureWrapper = device_->GetCompatibleSharedTexture(texture, 0);
     if (!sharedTextureWrapper)
     {
         Debug::Error("Duplicator::Duplicate() => Shared texture is null.");

Plugins/uDesktopDuplication/uDesktopDuplication/Monitor.cpp

@@ -78,7 +78,7 @@ void Monitor::Render()
     const auto& sharedTextureWrapper = frame.texture;
     auto sharedTexture = sharedTextureWrapper->Lock();
     if (!sharedTexture) return;
-    ScopedReleaser releaser([&] { sharedTextureWrapper->Unlock(); });
+    ScopedReleaser sharedTextureReleaser([&] { sharedTextureWrapper->Unlock(); });
 
 	if (unityTexture_)
 	{