Add Custom PCI Vendor and Device ID Support (#137)

* Add Custom PCI Vendor and Device ID Support

Allow the user to configure DXVK to use a custom PCI Vendor and Device ID, so that the program behaves the same on different cards.

* Remove AMD/NVIDIA/INTEL Shortcuts

* Remove extra semicolon

* Return DxvkGpuVendor to being an enum class

* Fixed hexadecimal output

src/dxvk/dxvk_adapter.cpp

@@ -32,6 +32,21 @@ namespace dxvk {
     VkPhysicalDeviceProperties properties;
     m_vki->vkGetPhysicalDeviceProperties(m_handle, &properties);
 
+    const std::string customVendorID = env::getEnvVar(L"DXVK_CUSTOM_VENDOR_ID");
+    const std::string customDeviceID = env::getEnvVar(L"DXVK_CUSTOM_DEVICE_ID");
+
+    if (!customVendorID.empty()) {
+      Logger::info("Using Custom PCI Vendor ID " + customVendorID + " instead of " + str::format(std::hex, properties.vendorID));
+
+      properties.vendorID = std::stoul(customVendorID, nullptr, 16);
+    }
+
+    if (!customDeviceID.empty()) {
+      Logger::info("Using Custom PCI Device ID " + customDeviceID + " instead of " + str::format(std::hex, properties.deviceID));
+
+      properties.deviceID = std::stoul(customDeviceID, nullptr, 16);  
+    }
+
     if (DxvkGpuVendor(properties.vendorID) == DxvkGpuVendor::Nvidia) {
       properties.driverVersion = VK_MAKE_VERSION(
         VK_VERSION_MAJOR(properties.driverVersion),
@@ -238,4 +253,4 @@ namespace dxvk {
       Logger::info(str::format("  ", names.name(i)));
   }
 
-}
+}

src/dxvk/dxvk_adapter.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <string>
+
 #include "./vulkan/dxvk_vulkan_extensions.h"
 
 #include "dxvk_include.h"
@@ -167,4 +169,4 @@ namespace dxvk {
 
   };
 
-}
+}