From 0f2610010be21aa15685f5734197623203fc9a59 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Fri, 13 Dec 2019 10:47:40 +0100
Subject: [PATCH] [hud] Implement queue submission counter as a HUD item

---
 src/dxvk/hud/dxvk_hud.cpp      |  1 +
 src/dxvk/hud/dxvk_hud_item.cpp | 35 ++++++++++++++++++++++++++++++++++
 src/dxvk/hud/dxvk_hud_item.h   | 27 ++++++++++++++++++++++++++
 3 files changed, 63 insertions(+)

diff --git a/src/dxvk/hud/dxvk_hud.cpp b/src/dxvk/hud/dxvk_hud.cpp
index fb76c794..0af4fec6 100644
--- a/src/dxvk/hud/dxvk_hud.cpp
+++ b/src/dxvk/hud/dxvk_hud.cpp
@@ -39,6 +39,7 @@ namespace dxvk::hud {
     addItem<HudDeviceInfoItem>("devinfo", m_device);
     addItem<HudFpsItem>("fps");
     addItem<HudFrameTimeItem>("frametimes");
+    addItem<HudSubmissionStatsItem>("submissions", device);
   }
   
   
diff --git a/src/dxvk/hud/dxvk_hud_item.cpp b/src/dxvk/hud/dxvk_hud_item.cpp
index 44c84864..b803670b 100644
--- a/src/dxvk/hud/dxvk_hud_item.cpp
+++ b/src/dxvk/hud/dxvk_hud_item.cpp
@@ -258,4 +258,39 @@ namespace dxvk::hud {
     return position;
   }
 
+
+  HudSubmissionStatsItem::HudSubmissionStatsItem(const Rc<DxvkDevice>& device)
+  : m_device(device) {
+
+  }
+
+
+  HudSubmissionStatsItem::~HudSubmissionStatsItem() {
+
+  }
+
+
+  void HudSubmissionStatsItem::update(dxvk::high_resolution_clock::time_point time) {
+    DxvkStatCounters counters = m_device->getStatCounters();
+    
+    uint32_t currCounter = counters.getCtr(DxvkStatCounter::QueueSubmitCount);
+    m_diffCounter = currCounter - m_prevCounter;
+    m_prevCounter = currCounter;
+  }
+
+
+  HudPos HudSubmissionStatsItem::render(
+          HudRenderer&      renderer,
+          HudPos            position) {
+    position.y += 16.0f;
+
+    renderer.drawText(16.0f,
+      { position.x, position.y },
+      { 1.0f, 1.0f, 1.0f, 1.0f },
+      str::format("Queue submissions: ", m_diffCounter));
+
+    position.y += 8.0f;
+    return position;
+  }
+
 }
diff --git a/src/dxvk/hud/dxvk_hud_item.h b/src/dxvk/hud/dxvk_hud_item.h
index a65aa142..1d327fe8 100644
--- a/src/dxvk/hud/dxvk_hud_item.h
+++ b/src/dxvk/hud/dxvk_hud_item.h
@@ -215,4 +215,31 @@ namespace dxvk::hud {
 
   };
 
+
+  /**
+   * \brief HUD item to display queue submissions
+   */
+  class HudSubmissionStatsItem : public HudItem {
+
+  public:
+
+    HudSubmissionStatsItem(const Rc<DxvkDevice>& device);
+
+    ~HudSubmissionStatsItem();
+
+    void update(dxvk::high_resolution_clock::time_point time);
+
+    HudPos render(
+            HudRenderer&      renderer,
+            HudPos            position);
+
+  private:
+
+    Rc<DxvkDevice>  m_device;
+
+    uint64_t        m_prevCounter = 0;
+    uint64_t        m_diffCounter = 0;
+
+  };
+
 }
\ No newline at end of file