[d3d11] Add support for shared ID3D11Fence resources

src/d3d11/d3d11_device.cpp

@@ -1353,7 +1353,7 @@ namespace dxvk {
     InitReturnPtr(ppFence);
 
     try {
-      Com<D3D11Fence> fence = new D3D11Fence(this, InitialValue, Flags);
+      Com<D3D11Fence> fence = new D3D11Fence(this, InitialValue, Flags, INVALID_HANDLE_VALUE);
       return fence->QueryInterface(riid, ppFence);
     } catch (const DxvkError& e) {
       Logger::err(e.message());
@@ -1424,8 +1424,16 @@ namespace dxvk {
           void**      ppFence) {
     InitReturnPtr(ppFence);
 
-    Logger::err("D3D11Device::OpenSharedFence: Not implemented");
-    return E_NOTIMPL;
+    if (ppFence == nullptr)
+      return S_FALSE;
+
+    try {
+      Com<D3D11Fence> fence = new D3D11Fence(this, 0, D3D11_FENCE_FLAG_SHARED, hFence);
+      return fence->QueryInterface(ReturnedInterface, ppFence);
+    } catch (const DxvkError& e) {
+      Logger::err(e.message());
+      return E_FAIL;
+    }
   }
 
 

src/d3d11/d3d11_fence.cpp

@@ -6,12 +6,21 @@ namespace dxvk {
   D3D11Fence::D3D11Fence(
           D3D11Device*        pDevice,
           UINT64              InitialValue,
-          D3D11_FENCE_FLAG    Flags)
+          D3D11_FENCE_FLAG    Flags,
+          HANDLE              hFence)
   : D3D11DeviceChild<ID3D11Fence>(pDevice) {
     DxvkFenceCreateInfo fenceInfo;
     fenceInfo.initialValue = InitialValue;
+    m_flags = Flags;
 
-    if (Flags)
+    if (Flags & D3D11_FENCE_FLAG_SHARED) {
+      fenceInfo.sharedType = VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_D3D11_FENCE_BIT;
+      if (hFence == nullptr)
+        hFence = INVALID_HANDLE_VALUE;
+      fenceInfo.sharedHandle = hFence;
+    }
+
+    if (Flags & ~D3D11_FENCE_FLAG_SHARED)
       Logger::err(str::format("Fence flags 0x", std::hex, Flags, " not supported"));
 
     m_fence = pDevice->GetDXVKDevice()->createFence(fenceInfo);
@@ -49,14 +58,31 @@ namespace dxvk {
           DWORD               dwAccess,
           LPCWSTR             lpName,
           HANDLE*             pHandle) {
-    Logger::err("D3D11Fence::CreateSharedHandle: Not implemented");
-    return E_NOTIMPL;
+    if (!(m_flags & D3D11_FENCE_FLAG_SHARED))
+      return E_INVALIDARG;
+
+    if (pAttributes)
+      Logger::warn(str::format("CreateSharedHandle: attributes ", pAttributes, " not handled"));
+    if (dwAccess)
+      Logger::warn(str::format("CreateSharedHandle: access ", dwAccess, " not handled"));
+    if (lpName)
+      Logger::warn(str::format("CreateSharedHandle: name ", dxvk::str::fromws(lpName), " not handled"));
+
+    HANDLE sharedHandle = m_fence->sharedHandle();
+    if (sharedHandle == INVALID_HANDLE_VALUE)
+      return E_INVALIDARG;
+
+    *pHandle = sharedHandle;
+    return S_OK;
   }
 
 
   HRESULT STDMETHODCALLTYPE D3D11Fence::SetEventOnCompletion(
           UINT64              Value,
           HANDLE              hEvent) {
+    // TODO in case of rewinds, the stored value may be higher.
+    // For shared fences, calling vkWaitSemaphores here could alleviate the issue.
+
     m_fence->enqueueWait(Value, [hEvent] {
       SetEvent(hEvent);
     });
@@ -66,6 +92,9 @@ namespace dxvk {
 
 
   UINT64 STDMETHODCALLTYPE D3D11Fence::GetCompletedValue() {
+    // TODO in the case of rewinds, the stored value may be higher.
+    // For shared fences, calling vkGetSemaphoreCounterValue here could alleviate the issue.
+
     return m_fence->getValue();
   }
   

src/d3d11/d3d11_fence.h

@@ -14,7 +14,8 @@ namespace dxvk {
     D3D11Fence(
             D3D11Device*        pDevice,
             UINT64              InitialValue,
-            D3D11_FENCE_FLAG    Flags);
+            D3D11_FENCE_FLAG    Flags,
+            HANDLE              hFence);
 
     ~D3D11Fence();
     
@@ -41,6 +42,7 @@ namespace dxvk {
   private:
     
     Rc<DxvkFence> m_fence;
+    D3D11_FENCE_FLAG m_flags;
 
   };