[hud] Display approximate progress when compiling shaders

src/dxvk/dxvk_device.cpp

@@ -188,12 +188,14 @@ namespace dxvk {
 
   DxvkStatCounters DxvkDevice::getStatCounters() {
     DxvkPipelineCount pipe = m_objects.pipelineManager().getPipelineCount();
+    DxvkPipelineWorkerStats workers = m_objects.pipelineManager().getWorkerStats();
     
     DxvkStatCounters result;
     result.setCtr(DxvkStatCounter::PipeCountGraphics, pipe.numGraphicsPipelines);
     result.setCtr(DxvkStatCounter::PipeCountLibrary,  pipe.numGraphicsLibraries);
     result.setCtr(DxvkStatCounter::PipeCountCompute,  pipe.numComputePipelines);
-    result.setCtr(DxvkStatCounter::PipeCompilerBusy,  m_objects.pipelineManager().isCompilingShaders());
+    result.setCtr(DxvkStatCounter::PipeTasksDone,     workers.tasksCompleted);
+    result.setCtr(DxvkStatCounter::PipeTasksTotal,    workers.tasksTotal);
     result.setCtr(DxvkStatCounter::GpuIdleTicks,      m_submissionQueue.gpuIdleTicks());
 
     std::lock_guard<sync::Spinlock> lock(m_statLock);

src/dxvk/dxvk_pipemanager.cpp

@@ -24,7 +24,7 @@ namespace dxvk {
     std::unique_lock lock(m_lock);
     this->startWorkers();
 
-    m_pendingTasks += 1;
+    m_tasksTotal += 1;
 
     m_buckets[uint32_t(priority)].queue.emplace(library);
     notifyWorkers(priority);
@@ -39,18 +39,13 @@ namespace dxvk {
     this->startWorkers();
 
     pipeline->acquirePipeline();
-    m_pendingTasks += 1;
+    m_tasksTotal += 1;
 
     m_buckets[uint32_t(priority)].queue.emplace(pipeline, state);
     notifyWorkers(priority);
   }
 
 
-  bool DxvkPipelineWorkers::isBusy() const {
-    return m_pendingTasks.load() != 0ull;
-  }
-
-
   void DxvkPipelineWorkers::stopWorkers() {
     { std::unique_lock lock(m_lock);
 
@@ -164,12 +159,12 @@ namespace dxvk {
 
       if (entry.pipelineLibrary) {
         entry.pipelineLibrary->compilePipeline();
-        m_pendingTasks -= 1;
       } else if (entry.graphicsPipeline) {
         entry.graphicsPipeline->compilePipeline(entry.graphicsState);
         entry.graphicsPipeline->releasePipeline();
-        m_pendingTasks -= 1;
       }
+
+      m_tasksCompleted += 1;
     }
   }
 

src/dxvk/dxvk_pipemanager.h

@@ -34,6 +34,11 @@ namespace dxvk {
     std::atomic<uint32_t> numComputePipelines   = { 0u };
   };
 
+  struct DxvkPipelineWorkerStats {
+    uint64_t tasksCompleted;
+    uint64_t tasksTotal;
+  };
+
   /**
    * \brief Pipeline priority
    */
@@ -58,6 +63,19 @@ namespace dxvk {
 
     ~DxvkPipelineWorkers();
 
+    /**
+     * \brief Queries worker statistics
+     *
+     * The returned result may be immediately out of date.
+     * \returns Worker statistics
+     */
+    DxvkPipelineWorkerStats getStats() const {
+      DxvkPipelineWorkerStats result;
+      result.tasksCompleted = m_tasksCompleted.load(std::memory_order_acquire);
+      result.tasksTotal = m_tasksTotal.load(std::memory_order_relaxed);
+      return result;
+    }
+
     /**
      * \brief Compiles a pipeline library
      *
@@ -82,12 +100,6 @@ namespace dxvk {
       const DxvkGraphicsPipelineStateInfo&  state,
             DxvkPipelinePriority            priority);
 
-    /**
-     * \brief Checks whether workers are busy
-     * \returns \c true if there is unfinished work
-     */
-    bool isBusy() const;
-
     /**
      * \brief Stops all worker threads
      *
@@ -121,7 +133,8 @@ namespace dxvk {
 
     DxvkDevice*                       m_device;
 
-    std::atomic<uint64_t>             m_pendingTasks = { 0ull };
+    std::atomic<uint64_t>             m_tasksTotal     = { 0ull };
+    std::atomic<uint64_t>             m_tasksCompleted = { 0ull };
 
     dxvk::mutex                       m_lock;
     std::array<PipelineBucket, 3>     m_buckets;
@@ -242,8 +255,8 @@ namespace dxvk {
      * \brief Checks whether async compiler is busy
      * \returns \c true if shaders are being compiled
      */
-    bool isCompilingShaders() const {
+    DxvkPipelineWorkerStats getWorkerStats() const {
-      return m_workers.isBusy();
+      return m_workers.getStats();
     }
 
     /**

src/dxvk/dxvk_stats.h

@@ -18,7 +18,8 @@ namespace dxvk {
     PipeCountGraphics,        ///< Number of graphics pipelines
     PipeCountLibrary,         ///< Number of graphics shader libraries
     PipeCountCompute,         ///< Number of compute pipelines
-    PipeCompilerBusy,         ///< Boolean indicating compiler activity
+    PipeTasksDone,            ///< Boolean indicating compiler activity
+    PipeTasksTotal,           ///< Boolean indicating compiler activity
     QueueSubmitCount,         ///< Number of command buffer submissions
     QueuePresentCount,        ///< Number of present calls / frames
     GpuSyncCount,             ///< Number of GPU synchronizations

src/dxvk/hud/dxvk_hud_item.cpp

@@ -755,15 +755,36 @@ namespace dxvk::hud {
 
   void HudCompilerActivityItem::update(dxvk::high_resolution_clock::time_point time) {
     DxvkStatCounters counters = m_device->getStatCounters();
-    bool doShow = counters.getCtr(DxvkStatCounter::PipeCompilerBusy);
 
-    if (!doShow) {
+    m_tasksDone = counters.getCtr(DxvkStatCounter::PipeTasksDone);
-      auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(time - m_timeShown);
+    m_tasksTotal = counters.getCtr(DxvkStatCounter::PipeTasksTotal);
-      doShow = elapsed.count() <= MinShowDuration;
-    }
 
-    if (doShow && !m_show)
+    bool doShow = m_tasksDone < m_tasksTotal;
+
+    if (!doShow)
+      m_timeDone = time;
+
+    if (!m_show) {
       m_timeShown = time;
+      m_showPercentage = false;
+    } else {
+      auto durationShown = std::chrono::duration_cast<std::chrono::milliseconds>(time - m_timeShown);
+      auto durationWorking = std::chrono::duration_cast<std::chrono::milliseconds>(time - m_timeDone);
+
+      if (!doShow) {
+        m_offset = m_tasksTotal;
+
+        // Ensure the item stays up long enough to be legible
+        doShow = durationShown.count() <= MinShowDuration;
+      }
+
+      if (!m_showPercentage) {
+        // Don't show percentage if it's just going to be stuck at 99%
+        // because the workers are not being fed tasks fast enough
+        m_showPercentage = durationWorking.count() >= (MinShowDuration / 5)
+                        && (computePercentage() < 50);
+      }
+    }
 
     m_show = doShow;
   }
@@ -773,13 +794,27 @@ namespace dxvk::hud {
           HudRenderer&      renderer,
           HudPos            position) {
     if (m_show) {
+      std::string string = "Compiling shaders...";
+
+      if (m_showPercentage)
+        string = str::format(string, " (", computePercentage(), "%)");
+
       renderer.drawText(16.0f,
         { position.x, renderer.surfaceSize().height / renderer.scale() - 20.0f },
         { 1.0f, 1.0f, 1.0f, 1.0f },
-        "Compiling shaders...");
+        string);
     }
 
     return position;
   }
 
+
+  uint32_t HudCompilerActivityItem::computePercentage() const {
+    if (m_offset == m_tasksTotal)
+      return 100;
+
+    return (uint32_t(m_tasksDone - m_offset) * 100)
+         / (uint32_t(m_tasksTotal - m_offset));
+  }
+
 }

src/dxvk/hud/dxvk_hud_item.h

@@ -482,10 +482,17 @@ namespace dxvk::hud {
 
     Rc<DxvkDevice> m_device;
 
-    bool m_show = false;
+    bool m_show           = false;
+    bool m_showPercentage = false;
 
-    dxvk::high_resolution_clock::time_point m_timeShown
+    uint64_t m_tasksDone    = 0ull;
-      = dxvk::high_resolution_clock::now();
+    uint64_t m_tasksTotal   = 0ull;
+    uint64_t m_offset       = 0ull;
+
+    dxvk::high_resolution_clock::time_point m_timeShown = dxvk::high_resolution_clock::now();
+    dxvk::high_resolution_clock::time_point m_timeDone = dxvk::high_resolution_clock::now();
+
+    uint32_t computePercentage() const;
 
   };