1 files changed, 43 insertions, 0 deletions
diff --git a/primedev/client/latencyflex.cpp b/primedev/client/latencyflex.cpp
new file mode 100644
index 00000000..25e38c7a
--- /dev/null
+++ b/primedev/client/latencyflex.cpp
@@ -0,0 +1,43 @@
+#include "core/convar/convar.h"
+
+AUTOHOOK_INIT()
+
+ConVar* Cvar_r_latencyflex;
+
+void (*m_winelfx_WaitAndBeginFrame)();
+
+// clang-format off
+AUTOHOOK(OnRenderStart, client.dll + 0x1952C0, 
+void, __fastcall, ())
+// clang-format on
+{
+	if (Cvar_r_latencyflex->GetBool() && m_winelfx_WaitAndBeginFrame)
+		m_winelfx_WaitAndBeginFrame();
+
+	OnRenderStart();
+}
+
+ON_DLL_LOAD_CLIENT_RELIESON("client.dll", LatencyFlex, ConVar, (CModule module))
+{
+	// Connect to the LatencyFleX service
+	// LatencyFleX is an open source vendor agnostic replacement for Nvidia Reflex input latency reduction technology.
+	// https://ishitatsuyuki.github.io/post/latencyflex/
+	HMODULE pLfxModule;
+
+	if (pLfxModule = LoadLibraryA("latencyflex_layer.dll"))
+		m_winelfx_WaitAndBeginFrame =
+			reinterpret_cast<void (*)()>(reinterpret_cast<void*>(GetProcAddress(pLfxModule, "lfx_WaitAndBeginFrame")));
+	else if (pLfxModule = LoadLibraryA("latencyflex_wine.dll"))
+		m_winelfx_WaitAndBeginFrame =
+			reinterpret_cast<void (*)()>(reinterpret_cast<void*>(GetProcAddress(pLfxModule, "winelfx_WaitAndBeginFrame")));
+	else
+	{
+		spdlog::info("Unable to load LatencyFleX library, LatencyFleX disabled.");
+		return;
+	}
+
+	AUTOHOOK_DISPATCH()
+
+	spdlog::info("LatencyFleX initialized.");
+	Cvar_r_latencyflex = new ConVar("r_latencyflex", "1", FCVAR_ARCHIVE, "Whether or not to use LatencyFleX input latency reduction.");
+}