From 286ab017dad9944d7dbdb6e97a1b101409204f79 Mon Sep 17 00:00:00 2001
From: Joshua Ashton <joshua@froggi.es>
Date: Fri, 26 Aug 2022 17:38:26 +0000
Subject: [PATCH] [vulkan] Add valid method to LibraryLoader

---
 src/vulkan/vulkan_loader.cpp | 4 ++++
 src/vulkan/vulkan_loader.h   | 1 +
 2 files changed, 5 insertions(+)

diff --git a/src/vulkan/vulkan_loader.cpp b/src/vulkan/vulkan_loader.cpp
index 49ed5cf28..c2b419e0e 100644
--- a/src/vulkan/vulkan_loader.cpp
+++ b/src/vulkan/vulkan_loader.cpp
@@ -21,6 +21,10 @@ namespace dxvk::vk {
   PFN_vkVoidFunction LibraryLoader::sym(const char* name) const {
     return sym(nullptr, name);
   }
+
+  bool LibraryLoader::valid() const {
+    return m_getInstanceProcAddr != nullptr;
+  }
   
   
   InstanceLoader::InstanceLoader(const Rc<LibraryLoader>& library, bool owned, VkInstance instance)
diff --git a/src/vulkan/vulkan_loader.h b/src/vulkan/vulkan_loader.h
index ff56cb01c..cf9ec1e6a 100644
--- a/src/vulkan/vulkan_loader.h
+++ b/src/vulkan/vulkan_loader.h
@@ -23,6 +23,7 @@ namespace dxvk::vk {
     ~LibraryLoader();
     PFN_vkVoidFunction sym(VkInstance instance, const char* name) const;
     PFN_vkVoidFunction sym(const char* name) const;
+    bool               valid() const;
   protected:
     const HMODULE                   m_library;
     const PFN_vkGetInstanceProcAddr m_getInstanceProcAddr;