[vulkan] Make LibraryLoader dynamically load vulkan-1

This makes LibraryLoader actually load the library and moves ownership
of GetInstanceProcAddr into it, which means we pass through the
loaders into their parents to grab stuff.

meson.build

@@ -69,7 +69,6 @@ if platform == 'windows'
     dxvk_library_path = meson.current_source_dir() + '/lib32'
   endif
 
-  lib_vulkan  = cpp.find_library('vulkan-1', dirs : dxvk_library_path)
   lib_d3d9    = cpp.find_library('d3d9')
   lib_d3d11   = cpp.find_library('d3d11')
   lib_dxgi    = cpp.find_library('dxgi')
@@ -100,7 +99,6 @@ if platform == 'windows'
   dxvk_wsi = 'win32'
   compiler_args += ['-DDXVK_WSI_WIN32']
 else
-  lib_vulkan = cpp.find_library('vulkan')
   lib_sdl2   = cpp.find_library('SDL2')
 
   wrc           = find_program('touch')

src/dxvk/dxvk_adapter.cpp

@@ -523,7 +523,7 @@ namespace dxvk {
       throw DxvkError("DxvkAdapter: Failed to create device");
 
     return new DxvkDevice(instance, this,
-      new vk::DeviceFn(true, m_vki->instance(), device),
+      new vk::DeviceFn(m_vki, true, device),
       devExtensions, enabledFeatures);
   }
 

src/dxvk/dxvk_instance.cpp

@@ -33,7 +33,7 @@ namespace dxvk {
       provider->initInstanceExtensions();
 
     m_vkl = new vk::LibraryFn();
-    m_vki = new vk::InstanceFn(true, this->createInstance());
+    m_vki = new vk::InstanceFn(m_vkl, true, this->createInstance());
 
     m_adapters = this->queryAdapters();
 

src/vulkan/meson.build

@@ -7,7 +7,7 @@ vkcommon_src = files([
 thread_dep = dependency('threads')
 
 vkcommon_lib = static_library('vkcommon', vkcommon_src,
-  dependencies        : [ thread_dep, lib_vulkan ],
+  dependencies        : [ thread_dep ],
   include_directories : [ dxvk_include_path ],
 )
 

src/vulkan/vulkan_loader.cpp

@@ -1,26 +1,41 @@
 #include "vulkan_loader.h"
 
+#include "../util/util_win32_compat.h"
+
 namespace dxvk::vk {
 
-  static const PFN_vkGetInstanceProcAddr GetInstanceProcAddr = vkGetInstanceProcAddr;
+  LibraryLoader::LibraryLoader()
+  : m_library(LoadLibraryA("vulkan-1"))
+  , m_getInstanceProcAddr(reinterpret_cast<PFN_vkGetInstanceProcAddr>(
+        GetProcAddress(m_library, "vkGetInstanceProcAddr"))) {
+  }
+
+  LibraryLoader::~LibraryLoader() {
+    FreeLibrary(m_library);
+  }
+
+  PFN_vkVoidFunction LibraryLoader::sym(VkInstance instance, const char* name) const {
+    return m_getInstanceProcAddr(instance, name);
+  }
 
   PFN_vkVoidFunction LibraryLoader::sym(const char* name) const {
-    return dxvk::vk::GetInstanceProcAddr(nullptr, name);
+    return sym(nullptr, name);
   }
 
 
-  InstanceLoader::InstanceLoader(bool owned, VkInstance instance)
-  : m_instance(instance), m_owned(owned) { }
+  InstanceLoader::InstanceLoader(const Rc<LibraryLoader>& library, bool owned, VkInstance instance)
+  : m_library(library), m_instance(instance), m_owned(owned) { }
 
 
   PFN_vkVoidFunction InstanceLoader::sym(const char* name) const {
-    return dxvk::vk::GetInstanceProcAddr(m_instance, name);
+    return m_library->sym(m_instance, name);
   }
 
 
-  DeviceLoader::DeviceLoader(bool owned, VkInstance instance, VkDevice device)
-  : m_getDeviceProcAddr(reinterpret_cast<PFN_vkGetDeviceProcAddr>(
-      dxvk::vk::GetInstanceProcAddr(instance, "vkGetDeviceProcAddr"))),
+  DeviceLoader::DeviceLoader(const Rc<InstanceLoader>& library, bool owned, VkDevice device)
+  : m_library(library)
+  , m_getDeviceProcAddr(reinterpret_cast<PFN_vkGetDeviceProcAddr>(
+      m_library->sym("vkGetDeviceProcAddr"))),
     m_device(device), m_owned(owned) { }
 
 
@@ -33,16 +48,16 @@ namespace dxvk::vk {
   LibraryFn::~LibraryFn() { }
 
 
-  InstanceFn::InstanceFn(bool owned, VkInstance instance)
-  : InstanceLoader(owned, instance) { }
+  InstanceFn::InstanceFn(const Rc<LibraryLoader>& library, bool owned, VkInstance instance)
+  : InstanceLoader(library, owned, instance) { }
   InstanceFn::~InstanceFn() {
     if (m_owned)
       this->vkDestroyInstance(m_instance, nullptr);
   }
 
 
-  DeviceFn::DeviceFn(bool owned, VkInstance instance, VkDevice device)
-  : DeviceLoader(owned, instance, device) { }
+  DeviceFn::DeviceFn(const Rc<InstanceLoader>& library, bool owned, VkDevice device)
+  : DeviceLoader(library, owned, device) { }
   DeviceFn::~DeviceFn() {
     if (m_owned)
       this->vkDestroyDevice(m_device, nullptr);

src/vulkan/vulkan_loader.h

@@ -10,15 +10,22 @@
   ::PFN_ ## name name = reinterpret_cast<::PFN_ ## name>(sym(#name))
 
 namespace dxvk::vk {
-  
+
   /**
    * \brief Vulkan library loader
    * 
-   * Provides methods to load Vulkan functions that
-   * can be called before creating a  instance.
+   * Dynamically loads the vulkan-1 library and
+   * provides methods to load Vulkan functions that
+   * can be called before creating a instance.
    */
   struct LibraryLoader : public RcObject {
+    LibraryLoader();
+    ~LibraryLoader();
+    PFN_vkVoidFunction sym(VkInstance instance, const char* name) const;
     PFN_vkVoidFunction sym(const char* name) const;
+  protected:
+    const HMODULE                   m_library;
+    const PFN_vkGetInstanceProcAddr m_getInstanceProcAddr;
   };
 
 
@@ -29,12 +36,13 @@ namespace dxvk::vk {
    * called for a specific instance.
    */
   struct InstanceLoader : public RcObject {
-    InstanceLoader(bool owned, VkInstance instance);
+    InstanceLoader(const Rc<LibraryLoader>& library, bool owned, VkInstance instance);
     PFN_vkVoidFunction sym(const char* name) const;
     VkInstance instance() const { return m_instance; }
   protected:
-    const VkInstance m_instance;
-    const bool       m_owned;
+    Rc<LibraryLoader> m_library;
+    const VkInstance  m_instance;
+    const bool        m_owned;
   };
 
 
@@ -45,10 +53,11 @@ namespace dxvk::vk {
    * specific device.
    */
   struct DeviceLoader : public RcObject {
-    DeviceLoader(bool owned, VkInstance instance, VkDevice device);
+    DeviceLoader(const Rc<InstanceLoader>& library, bool owned, VkDevice device);
     PFN_vkVoidFunction sym(const char* name) const;
     VkDevice device() const { return m_device; }
   protected:
+    Rc<InstanceLoader>            m_library;
     const PFN_vkGetDeviceProcAddr m_getDeviceProcAddr;
     const VkDevice                m_device;
     const bool                    m_owned;
@@ -78,7 +87,7 @@ namespace dxvk::vk {
    * are independent of any Vulkan devices.
    */
   struct InstanceFn : InstanceLoader {
-    InstanceFn(bool owned, VkInstance instance);
+    InstanceFn(const Rc<LibraryLoader>& library, bool owned, VkInstance instance);
     ~InstanceFn();
 
     VULKAN_FN(vkCreateDevice);
@@ -160,7 +169,7 @@ namespace dxvk::vk {
    * This ensures that no slow dispatch code is executed.
    */
   struct DeviceFn : DeviceLoader {
-    DeviceFn(bool owned, VkInstance instance, VkDevice device);
+    DeviceFn(const Rc<InstanceLoader>& library, bool owned, VkDevice device);
     ~DeviceFn();
 
     VULKAN_FN(vkDestroyDevice);