[dxvk] Enable asynchronous presentation on all hardware

...and remove the dxvk.asyncPresent option.

src/d3d11/d3d11_swapchain.cpp

@@ -205,9 +205,6 @@ namespace dxvk {
     auto immediateContext = static_cast<D3D11ImmediateContext*>(deviceContext.ptr());
     immediateContext->Flush();
 
-    if (!m_device->hasAsyncPresent())
-      immediateContext->SynchronizeCsThread();
-
     // Wait for the sync event so that we respect the maximum frame latency
     auto syncEvent = m_dxgiDevice->GetFrameSyncEvent(m_desc.BufferCount);
     syncEvent->wait();
@@ -321,34 +318,22 @@ namespace dxvk {
   void D3D11SwapChain::SubmitPresent(
           D3D11ImmediateContext*  pContext,
     const vk::PresenterSync&      Sync) {
-    if (m_device->hasAsyncPresent()) {
-      // Present from CS thread so that we don't
-      // have to synchronize with it first.
-      m_presentStatus.result = VK_NOT_READY;
+    // Present from CS thread so that we don't
+    // have to synchronize with it first.
+    m_presentStatus.result = VK_NOT_READY;
 
-      pContext->EmitCs([this,
-        cSync        = Sync,
-        cCommandList = m_context->endRecording()
-      ] (DxvkContext* ctx) {
-        m_device->submitCommandList(cCommandList,
-          cSync.acquire, cSync.present);
+    pContext->EmitCs([this,
+      cSync        = Sync,
+      cCommandList = m_context->endRecording()
+    ] (DxvkContext* ctx) {
+      m_device->submitCommandList(cCommandList,
+        cSync.acquire, cSync.present);
 
-        m_device->presentImage(m_presenter,
-          cSync.present, &m_presentStatus);
-      });
-
-      pContext->FlushCsChunk();
-    } else {
-      // Safe path, present from calling thread
-      m_device->submitCommandList(
-        m_context->endRecording(),
-        Sync.acquire, Sync.present);
-      
       m_device->presentImage(m_presenter,
-        Sync.present, &m_presentStatus);
+        cSync.present, &m_presentStatus);
+    });
 
-      SynchronizePresent();
-    }
+    pContext->FlushCsChunk();
   }
 
 

src/dxvk/dxvk_device.h

@@ -401,17 +401,6 @@ namespace dxvk {
             VkSemaphore               waitSync,
             VkSemaphore               wakeSync);
 
-    /**
-     * \brief Checks for async presentation support
-     *
-     * If this is \c false, synchronize with the
-     * present call immediately after submitting it.
-     * \returns \c true if async present is enabled
-     */
-    bool hasAsyncPresent() const {
-      return m_submissionQueue.hasAsyncPresent();
-    }
-
     /**
      * \brief Locks submission queue
      * 

src/dxvk/dxvk_options.cpp

@@ -6,7 +6,6 @@ namespace dxvk {
     enableStateCache      = config.getOption<bool>    ("dxvk.enableStateCache",       true);
     enableOpenVR          = config.getOption<bool>    ("dxvk.enableOpenVR",           true);
     numCompilerThreads    = config.getOption<int32_t> ("dxvk.numCompilerThreads",     0);
-    asyncPresent          = config.getOption<Tristate>("dxvk.asyncPresent",           Tristate::Auto);
     useRawSsbo            = config.getOption<Tristate>("dxvk.useRawSsbo",             Tristate::Auto);
     useEarlyDiscard       = config.getOption<Tristate>("dxvk.useEarlyDiscard",        Tristate::Auto);
     hud                   = config.getOption<std::string>("dxvk.hud", "");

src/dxvk/dxvk_options.h

@@ -18,9 +18,6 @@ namespace dxvk {
     /// when using the state cache
     int32_t numCompilerThreads;
 
-    /// Asynchronous presentation
-    Tristate asyncPresent;
-
     /// Shader-related options
     Tristate useRawSsbo;
     Tristate useEarlyDiscard;

src/dxvk/dxvk_queue.cpp

@@ -7,12 +7,7 @@ namespace dxvk {
   : m_device(device),
     m_submitThread([this] () { submitCmdLists(); }),
     m_finishThread([this] () { finishCmdLists(); }) {
-    // Asynchronous presentation seems to increase the
-    // likelyhood of hangs on Nvidia for some reason.
-    m_asyncPresent = !m_device->adapter()->matchesDriver(
-      DxvkGpuVendor::Nvidia, VK_DRIVER_ID_NVIDIA_PROPRIETARY_KHR, 0, 0);
 
-    applyTristate(m_asyncPresent, m_device->config().asyncPresent);
   }
   
   
@@ -48,21 +43,12 @@ namespace dxvk {
   void DxvkSubmissionQueue::present(DxvkPresentInfo presentInfo, DxvkSubmitStatus* status) {
     std::unique_lock<std::mutex> lock(m_mutex);
 
-    if (m_asyncPresent) {
-      DxvkSubmitEntry entry = { };
-      entry.status  = status;
-      entry.present = std::move(presentInfo);
+    DxvkSubmitEntry entry = { };
+    entry.status  = status;
+    entry.present = std::move(presentInfo);
 
-      m_submitQueue.push(std::move(entry));
-      m_appendCond.notify_all();
-    } else {
-      m_submitCond.wait(lock, [this] {
-        return m_submitQueue.empty();
-      });
-
-      VkResult result = presentInfo.presenter->presentImage(presentInfo.waitSync);
-      status->result.store(result);
-    }
+    m_submitQueue.push(std::move(entry));
+    m_appendCond.notify_all();
   }
 
 

src/dxvk/dxvk_queue.h

@@ -104,14 +104,6 @@ namespace dxvk {
       return m_lastError.load();
     }
     
-    /**
-     * \brief Checks whether asynchronous presentation is supported
-     * \returns \c true if presentation is asynchronous
-     */
-    bool hasAsyncPresent() const {
-      return m_asyncPresent;
-    }
-
     /**
      * \brief Submits a command list asynchronously
      * 
@@ -175,7 +167,6 @@ namespace dxvk {
   private:
 
     DxvkDevice*             m_device;
-    bool                    m_asyncPresent;
 
     std::atomic<VkResult>   m_lastError = { VK_SUCCESS };