[dxvk] Avoid buffer slice copy when tracking buffer views

src/dxvk/dxvk_buffer.h

@@ -357,7 +357,7 @@ namespace dxvk {
      * \returns Backing buffer resource
      */
     Rc<DxvkResource> bufferResource() const {
-      return m_physView->slice().resource();
+      return m_physView->bufferResource();
     }
     
     /**

src/dxvk/dxvk_buffer_res.h

@@ -252,6 +252,14 @@ namespace dxvk {
       return m_slice;
     }
 
+    /**
+     * \brief Physical buffer resource
+     * \returns Resource pointer
+     */
+    Rc<DxvkResource> bufferResource() const {
+      return m_slice.resource();
+    }
+    
   private:
     
     Rc<vk::DeviceFn>        m_vkd;