Add GetNativePtr to GPUAdapter

Source/Engine/Graphics/GPUAdapter.h

@@ -41,6 +41,11 @@ public:
     /// <returns>True if valid, otherwise false.</returns>
     virtual bool IsValid() const = 0;
 
+    /// <summary>
+    /// Gets the native pointer to the underlying graphics device adapter. It's a low-level platform-specific handle.
+    /// </summary>
+    API_PROPERTY() virtual void* GetNativePtr() const = 0;
+
     /// <summary>
     /// Gets the GPU vendor identifier.
     /// </summary>

Source/Engine/GraphicsDevice/DirectX/GPUAdapterDX.h

@@ -38,12 +38,14 @@ public:
     {
         return Index != INVALID_INDEX && MaxFeatureLevel != static_cast<D3D_FEATURE_LEVEL>(0);
     }
-
+    void* GetNativePtr() const override
+    {
+        return (void*)(intptr)Index;
+    }
     uint32 GetVendorId() const override
     {
         return (uint32)Description.VendorId;
     }
-
     String GetDescription() const override
     {
         return Description.Description;

Source/Engine/GraphicsDevice/Null/GPUAdapterNull.h

@@ -12,18 +12,19 @@
 class GPUAdapterNull : public GPUAdapter
 {
 public:
-
     // [GPUAdapter]
     bool IsValid() const override
     {
         return true;
     }
-
+    void* GetNativePtr() const override
+    {
+        return nullptr;
+    }
     uint32 GetVendorId() const override
     {
         return 0;
     }
-
     String GetDescription() const override
     {
         return TEXT("Null");

Source/Engine/GraphicsDevice/Vulkan/GPUAdapterVulkan.h

@@ -61,6 +61,10 @@ public:
     {
         return Gpu != VK_NULL_HANDLE;
     }
+    void* GetNativePtr() const override
+    {
+        return (void*)Gpu;
+    }
     uint32 GetVendorId() const override
     {
         return GpuProps.vendorID;