From cf9de54a12e662cfbf87beba10428c41e13d3ec9 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Thu, 10 Jan 2019 11:57:09 +0100
Subject: [PATCH] [dxgi] Add dxgi.nvapiHack option to disable NVAPI workaround

---
 src/dxgi/dxgi_adapter.cpp | 2 +-
 src/dxgi/dxgi_options.cpp | 1 +
 src/dxgi/dxgi_options.h   | 3 +++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/dxgi/dxgi_adapter.cpp b/src/dxgi/dxgi_adapter.cpp
index d6b5d2d7..87acb067 100644
--- a/src/dxgi/dxgi_adapter.cpp
+++ b/src/dxgi/dxgi_adapter.cpp
@@ -159,7 +159,7 @@ namespace dxvk {
     
     // XXX nvapi workaround for a lot of Unreal Engine 4 games
     if (options->customVendorId < 0 && options->customDeviceId < 0
-     && deviceProp.vendorID == uint16_t(DxvkGpuVendor::Nvidia)) {
+     && options->nvapiHack && deviceProp.vendorID == uint16_t(DxvkGpuVendor::Nvidia)) {
       Logger::info("DXGI: NvAPI workaround enabled, reporting AMD GPU");
       deviceProp.vendorID = uint16_t(DxvkGpuVendor::Amd);
       deviceProp.deviceID = 0x67df; /* RX 480 */
diff --git a/src/dxgi/dxgi_options.cpp b/src/dxgi/dxgi_options.cpp
index c1ce8686..1c91817b 100644
--- a/src/dxgi/dxgi_options.cpp
+++ b/src/dxgi/dxgi_options.cpp
@@ -40,6 +40,7 @@ namespace dxvk {
     this->maxSharedMemory = VkDeviceSize(config.getOption<int32_t>("dxgi.maxSharedMemory", 0)) << 20;
 
     this->d3d10Enable = config.getOption<bool>("d3d10.enable", true);
+    this->nvapiHack   = config.getOption<bool>("dxgi.nvapiHack", true);
   }
   
 }
\ No newline at end of file
diff --git a/src/dxgi/dxgi_options.h b/src/dxgi/dxgi_options.h
index 96bc5a64..3eb63c35 100644
--- a/src/dxgi/dxgi_options.h
+++ b/src/dxgi/dxgi_options.h
@@ -40,6 +40,9 @@ namespace dxvk {
 
     /// Enables D3D10 support
     bool d3d10Enable;
+
+    /// Enables nvapi workaround
+    bool nvapiHack;
   };
   
 }