[dxvk] Add method to retrieve per-heap memory stats

src/dxvk/dxvk_device.cpp

@@ -175,6 +175,11 @@ namespace dxvk {
     result.merge(m_statCounters);
     return result;
   }
+  
+  
+  DxvkMemoryStats DxvkDevice::getMemoryStats(uint32_t heap) {
+    return m_objects.memoryManager().getMemoryStats(heap);
+  }
 
 
   uint32_t DxvkDevice::getCurrentFrameId() const {

src/dxvk/dxvk_device.h

@@ -350,6 +350,14 @@ namespace dxvk {
      */
     DxvkStatCounters getStatCounters();
 
+    /**
+     * \brief Retrieves memors statistics
+     *
+     * \param [in] heap Memory heap index
+     * \returns Memory stats for this heap
+     */
+    DxvkMemoryStats getMemoryStats(uint32_t heap);
+
     /**
      * \brief Retreves current frame ID
      * \returns Current frame ID

src/dxvk/dxvk_memory.h

@@ -271,6 +271,18 @@ namespace dxvk {
      */
     DxvkMemoryStats getMemoryStats();
     
+    /**
+     * \brief Queries memory stats
+     * 
+     * Returns the total amount of memory
+     * allocated and used for a given heap.
+     * \param [in] heap Heap index
+     * \returns Memory stats for this heap
+     */
+    DxvkMemoryStats getMemoryStats(uint32_t heap) const {
+      return m_memHeaps[heap].stats;
+    }
+    
   private:
 
     const Rc<vk::DeviceFn>                 m_vkd;