[d3d9] Add HUD item for managed memory

src/d3d9/d3d9_hud.cpp

@@ -33,4 +33,34 @@ namespace dxvk::hud {
     return position;
   }
 
+  HudManagedMemory::HudManagedMemory(D3D9DeviceEx* device)
+          : m_device       (device)
+          , m_memoryText ("") {}
+
+
+  void HudManagedMemory::update(dxvk::high_resolution_clock::time_point time) {
+    D3D9MemoryAllocator* allocator = m_device->GetAllocator();
+    m_memoryText = str::format(allocator->AllocatedMemory() >> 20, " MiB, Used: ", allocator->UsedMemory() >> 20, " MiB, Mapped: ", allocator->MappedMemory() >> 20, " MiB");
+  }
+
+
+  HudPos HudManagedMemory::render(
+          HudRenderer&      renderer,
+          HudPos            position) {
+    position.y += 16.0f;
+
+    renderer.drawText(16.0f,
+                      { position.x, position.y },
+                      { 0.0f, 1.0f, 0.75f, 1.0f },
+                      "Managed memory:");
+
+    renderer.drawText(16.0f,
+                      { position.x + 200.0f, position.y },
+                      { 1.0f, 1.0f, 1.0f, 1.0f },
+                      m_memoryText);
+
+    position.y += 8.0f;
+    return position;
+  }
+
 }

src/d3d9/d3d9_hud.h

@@ -6,7 +6,7 @@
 namespace dxvk::hud {
 
   /**
-   * \brief HUD item to display DXVK version
+   * \brief HUD item to display sampler count
    */
   class HudSamplerCount : public HudItem {
 
@@ -28,4 +28,27 @@ namespace dxvk::hud {
 
   };
 
+    /**
+     * \brief HUD item to display managed texture memory
+     */
+    class HudManagedMemory : public HudItem {
+
+    public:
+
+        HudManagedMemory(D3D9DeviceEx* device);
+
+        void update(dxvk::high_resolution_clock::time_point time);
+
+        HudPos render(
+                HudRenderer&      renderer,
+                HudPos            position);
+
+    private:
+
+        D3D9DeviceEx* m_device;
+
+        std::string m_memoryText;
+
+    };
+
 }

src/d3d9/d3d9_swapchain.cpp

@@ -1080,6 +1080,7 @@ namespace dxvk {
     if (m_hud != nullptr) {
       m_hud->addItem<hud::HudClientApiItem>("api", 1, GetApiName());
       m_hud->addItem<hud::HudSamplerCount>("samplers", -1, m_parent);
+      m_hud->addItem<hud::HudManagedMemory>("managed_mem", -1, m_parent);
     }
   }