Add a specialisation for buffer reference add/remove

* This skips some potentially expensive (and redundant) checks if the buffer is
  a view.

renderdoc/driver/d3d11/d3d11_renderstate.cpp

@@ -601,6 +601,38 @@ void D3D11RenderState::ReleaseRef(ID3D11DeviceChild *p)
   }
 }
 
+// these are overloads that take a buffer to skip the view IsAlloc checks
+
+void D3D11RenderState::TakeRef(ID3D11Buffer *p)
+{
+  if(p)
+  {
+    p->AddRef();
+    if(m_ImmediatePipeline)
+    {
+      m_pDevice->InternalRef();
+
+      // see above
+      ((WrappedDeviceChild11<ID3D11Buffer> *)p)->PipelineAddRef();
+    }
+  }
+}
+
+void D3D11RenderState::ReleaseRef(ID3D11Buffer *p)
+{
+  if(p)
+  {
+    p->Release();
+    if(m_ImmediatePipeline)
+    {
+      m_pDevice->InternalRelease();
+
+      // see above
+      ((WrappedDeviceChild11<ID3D11Buffer> *)p)->PipelineRelease();
+    }
+  }
+}
+
 bool D3D11RenderState::IsRangeBoundForWrite(const ResourceRange &range)
 {
   for(UINT i = 0; i < D3D11_1_UAV_SLOT_COUNT; i++)

renderdoc/driver/d3d11/d3d11_renderstate.h

@@ -97,6 +97,9 @@ struct D3D11RenderState
   void TakeRef(ID3D11DeviceChild *p);
   void ReleaseRef(ID3D11DeviceChild *p);
 
+  void TakeRef(ID3D11Buffer *p);
+  void ReleaseRef(ID3D11Buffer *p);
+
   template <typename T>
   void ChangeRefRead(T *&stateItem, T *newItem)
   {