[d3d9] Add GetInstanceExtensions to interop API

src/d3d9/d3d9_interface.cpp

@@ -93,7 +93,8 @@ namespace dxvk {
       return S_OK;
     }
 
-    if (riid == __uuidof(ID3D9VkInteropInterface)) {
+    if (riid == __uuidof(ID3D9VkInteropInterface)
+     || riid == __uuidof(ID3D9VkInteropInterface1)) {
       *ppvObject = ref(&m_d3d9Interop);
       return S_OK;
     }

src/d3d9/d3d9_interfaces.h

@@ -30,6 +30,26 @@ ID3D9VkInteropInterface : public IUnknown {
           VkPhysicalDevice*     pPhysicalDevice) = 0;
 };
 
+/**
+ * \brief D3D9 interface for Vulkan interop - extended
+ *
+ * Provides access to the instance extension lists
+ * and everything provided by ID3D9VkInteropInterface
+ */
+MIDL_INTERFACE("d6589ed4-7a37-4096-bac2-223b25ae31d2")
+ID3D9VkInteropInterface1 : public ID3D9VkInteropInterface {
+  /**
+   * \brief Gets a list of enabled instance extensions
+   * 
+   * \param [out] pExtensionCount Number of extensions
+   * \param [out] ppExtensions List of extension names
+   * \returns D3DERR_MOREDATA if the list was truncated
+   */
+  virtual HRESULT STDMETHODCALLTYPE GetInstanceExtensions(
+          UINT*                       pExtensionCount,
+    const char**                      ppExtensions) = 0;
+};
+
 /**
  * \brief D3D9 texture interface for Vulkan interop
  * 
@@ -263,6 +283,7 @@ ID3D9VkExtSwapchain : public IUnknown {
 
 #ifndef _MSC_VER
 __CRT_UUID_DECL(ID3D9VkInteropInterface,   0x3461a81b,0xce41,0x485b,0xb6,0xb5,0xfc,0xf0,0x8b,0xa6,0xa6,0xbd);
+__CRT_UUID_DECL(ID3D9VkInteropInterface1,  0xd6589ed4,0x7a37,0x4096,0xba,0xc2,0x22,0x3b,0x25,0xae,0x31,0xd2);
 __CRT_UUID_DECL(ID3D9VkInteropTexture,     0xd56344f5,0x8d35,0x46fd,0x80,0x6d,0x94,0xc3,0x51,0xb4,0x72,0xc1);
 __CRT_UUID_DECL(ID3D9VkInteropDevice,      0x2eaa4b89,0x0107,0x4bdb,0x87,0xf7,0x0f,0x54,0x1c,0x49,0x3c,0xe0);
 __CRT_UUID_DECL(ID3D9VkExtSwapchain,       0x13776e93,0x4aa9,0x430a,0xa4,0xec,0xfe,0x9e,0x28,0x11,0x81,0xd5);

src/d3d9/d3d9_interop.cpp

@@ -51,6 +51,31 @@ namespace dxvk {
     }
   }
 
+  HRESULT STDMETHODCALLTYPE D3D9VkInteropInterface::GetInstanceExtensions(
+          UINT* pExtensionCount,
+    const char** ppExtensions) {
+    if (pExtensionCount == nullptr)
+      return D3DERR_INVALIDCALL;
+
+    const DxvkNameList& extensions = m_interface->GetInstance()->extensionNameList();
+
+    if (ppExtensions == nullptr) {
+      *pExtensionCount = extensions.count();
+      return D3D_OK;
+    }
+
+    // Write 
+    UINT count = 0;
+    UINT maxCount = *pExtensionCount;
+    for (uint32_t i = 0; i < extensions.count() && i < maxCount; i++) {
+      ppExtensions[i] = extensions.name(i);
+      count++;
+    }
+
+    *pExtensionCount = count;
+    return (count < maxCount) ? D3DERR_MOREDATA : D3D_OK;
+  }
+
   ////////////////////////////////
   // Texture Interop
   ///////////////////////////////

src/d3d9/d3d9_interop.h

@@ -10,7 +10,7 @@ namespace dxvk {
   class D3D9DeviceEx;
   struct D3D9_COMMON_TEXTURE_DESC;
 
-  class D3D9VkInteropInterface final : public ID3D9VkInteropInterface {
+  class D3D9VkInteropInterface final : public ID3D9VkInteropInterface1 {
 
   public:
 
@@ -34,6 +34,10 @@ namespace dxvk {
             UINT                  Adapter,
             VkPhysicalDevice*     pPhysicalDevice);
 
+    HRESULT STDMETHODCALLTYPE GetInstanceExtensions(
+            UINT*                 pExtensionCount,
+      const char**                ppExtensions);
+
   private:
 
     D3D9InterfaceEx* m_interface;

src/dxvk/dxvk_instance.cpp

@@ -115,15 +115,14 @@ namespace dxvk {
 
   void DxvkInstance::createInstanceLoader(const DxvkInstanceImportInfo& args, DxvkInstanceFlags flags) {
     DxvkNameList layerList;
-    DxvkNameList extensionList;
     DxvkNameSet extensionSet;
 
     bool enablePerfEvents = false;
     bool enableValidation = false;
 
     if (args.instance) {
-      extensionList = DxvkNameList(args.extensionCount, args.extensionNames);
-      extensionSet = getExtensionSet(extensionList);
+      m_extensionNames = DxvkNameList(args.extensionCount, args.extensionNames);
+      extensionSet = getExtensionSet(m_extensionNames);
 
       auto extensionInfos = getExtensionList(m_extensions, true);
 
@@ -168,11 +167,11 @@ namespace dxvk {
         extensionSet.merge(provider->getInstanceExtensions());
 
       // Generate list of extensions to enable
-      extensionList = extensionSet.toNameList();
+      m_extensionNames = extensionSet.toNameList();
     }
 
     Logger::info("Enabled instance extensions:");
-    this->logNameList(extensionList);
+    this->logNameList(m_extensionNames);
 
     // If necessary, create a new Vulkan instance
     VkInstance instance = args.instance;
@@ -191,8 +190,8 @@ namespace dxvk {
       info.pApplicationInfo         = &appInfo;
       info.enabledLayerCount        = layerList.count();
       info.ppEnabledLayerNames      = layerList.names();
-      info.enabledExtensionCount    = extensionList.count();
-      info.ppEnabledExtensionNames  = extensionList.names();
+      info.enabledExtensionCount    = m_extensionNames.count();
+      info.ppEnabledExtensionNames  = m_extensionNames.names();
 
       VkResult status = m_vkl->vkCreateInstance(&info, nullptr, &instance);
 

src/dxvk/dxvk_instance.h

@@ -144,6 +144,18 @@ namespace dxvk {
     const DxvkInstanceExtensions& extensions() const {
       return m_extensions;
     }
+
+   /**
+    * \brief Instance extension name list
+    * 
+    * Returns the list of extensions that the
+    * instance was created with, provided by
+    * both DXVK and any extension providers.
+    * \returns Instance extension name list
+    */
+    const DxvkNameList& extensionNameList() const {
+      return m_extensionNames;
+    }
     
   private:
 
@@ -153,6 +165,7 @@ namespace dxvk {
     Rc<vk::LibraryFn>       m_vkl;
     Rc<vk::InstanceFn>      m_vki;
     DxvkInstanceExtensions  m_extensions;
+    DxvkNameList            m_extensionNames;
 
     VkDebugUtilsMessengerEXT m_messenger = VK_NULL_HANDLE;