From 5c7f9cc49e2c7e4986003e50dafceeb00420e61f Mon Sep 17 00:00:00 2001
From: Egor Yusov <egor.yusov@gmail.com>
Date: Fri, 8 Nov 2019 10:08:20 -0800
Subject: Added IDeviceObject::GetUniqueID method (API Version 240039)

---
 Graphics/GraphicsEngine/include/DeviceObjectBase.h |  2 +-
 Graphics/GraphicsEngine/interface/APIInfo.h        |  2 +-
 Graphics/GraphicsEngine/interface/DeviceObject.h   | 22 +++++++++++++++++++++-
 Graphics/GraphicsEngine/interface/Texture.h        |  2 +-
 4 files changed, 24 insertions(+), 4 deletions(-)

(limited to 'Graphics/GraphicsEngine')

diff --git a/Graphics/GraphicsEngine/include/DeviceObjectBase.h b/Graphics/GraphicsEngine/include/DeviceObjectBase.h
index f1e8e0b0..44011d8c 100644
--- a/Graphics/GraphicsEngine/include/DeviceObjectBase.h
+++ b/Graphics/GraphicsEngine/include/DeviceObjectBase.h
@@ -136,7 +136,7 @@ public:
     }
 
     /// Returns unique identifier
-    UniqueIdentifier GetUniqueID()const
+    virtual Int32 GetUniqueID()const override final
     {
         /// \note
         /// This unique ID is used to unambiguously identify device object for
diff --git a/Graphics/GraphicsEngine/interface/APIInfo.h b/Graphics/GraphicsEngine/interface/APIInfo.h
index 298b84c5..70de6f5a 100644
--- a/Graphics/GraphicsEngine/interface/APIInfo.h
+++ b/Graphics/GraphicsEngine/interface/APIInfo.h
@@ -26,7 +26,7 @@
 /// \file
 /// Diligent API information
 
-#define DILIGENT_API_VERSION 240038
+#define DILIGENT_API_VERSION 240039
 
 #include "../../../Primitives/interface/BasicTypes.h"
 
diff --git a/Graphics/GraphicsEngine/interface/DeviceObject.h b/Graphics/GraphicsEngine/interface/DeviceObject.h
index bd7e8c61..1d175cf5 100644
--- a/Graphics/GraphicsEngine/interface/DeviceObject.h
+++ b/Graphics/GraphicsEngine/interface/DeviceObject.h
@@ -43,8 +43,28 @@ public:
     /// Queries the specific interface, see IObject::QueryInterface() for details
     virtual void QueryInterface( const INTERFACE_ID& IID, IObject** ppInterface )override = 0;
 
-    /// Returns the buffer object description
+
+    /// Returns the object description
     virtual const DeviceObjectAttribs& GetDesc()const = 0;
+
+
+    /// Returns unique identifier assigned to an object
+
+    /// \remarks Unique identifiers can be used to reliably check if two objects are identical.
+    ///          Note that the engine resuses memory reclaimed after an object has been released.
+    ///          For example, if a texture object is released and then another texture is created,
+    ///          the engine may return the same pointer, so pointer-to-pointer comparisons are not
+    ///          reliable. Unique identifiers, on the other hand, are guaranteed to be, well, unique.
+    ///
+    ///          Unique identifiers are object-specifics, so, for instance, buffer identifiers
+    ///          are not comparable to texture identifiers.
+    ///
+    ///          Unique identifiers are only meaningful within one session. After an application
+    ///          restarts, all identifiers become invalid.
+    ///
+    ///          Valid identifiers are always positive values. Zero and negative values can never be
+    ///          assigned to an object and are always guaranteed to be invalid.
+    virtual Int32 GetUniqueID() const = 0;
 };
 
 }
diff --git a/Graphics/GraphicsEngine/interface/Texture.h b/Graphics/GraphicsEngine/interface/Texture.h
index 6e328f83..cc5a1ebe 100644
--- a/Graphics/GraphicsEngine/interface/Texture.h
+++ b/Graphics/GraphicsEngine/interface/Texture.h
@@ -106,7 +106,7 @@ struct TextureDesc : DeviceObjectAttribs
     TEXTURE_FORMAT Format   = TEX_FORMAT_UNKNOWN;
 
     /// Number of Mip levels in the texture. Multisampled textures can only have 1 Mip level.
-    /// Specify 0 to generate full mipmap chain.
+    /// Specify 0 to create full mipmap chain.
     Uint32 MipLevels        = 1;
 
     /// Number of samples.\n
-- 
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