Non sRGB changes pulled in from the ColorSpace2 branch.

include/vsg/io/Input.h

@@ -45,6 +45,7 @@ namespace vsg
     public:
         Input(ref_ptr<ObjectFactory> in_objectFactory, ref_ptr<const Options> in_options = {});
 
+        Input(const Input&) = delete;
         Input& operator=(const Input& rhs) = delete;
 
         /// return true if property name matches the next token in the stream, or if property names are not required for format

include/vsg/io/Output.h

@@ -40,8 +40,10 @@ namespace vsg
     class VSG_DECLSPEC Output
     {
     public:
-        Output(ref_ptr<const Options> in_options = {});
+        Output();
+        Output(ref_ptr<const Options> in_options);
 
+        Output(const Output&) = delete;
         Output& operator=(const Output& rhs) = delete;
 
         /// write property name if appropriate for format

include/vsg/state/DescriptorSet.h

@@ -69,6 +69,9 @@ namespace vsg
         public:
             Implementation(DescriptorPool* descriptorPool, DescriptorSetLayout* descriptorSetLayout);
 
+            Implementation(const Implementation&) = delete;
+            Implementation& operator=(const Implementation&) = delete;
+
             void assign(Context& context, const Descriptors& descriptors);
 
             VkDescriptorSet _descriptorSet;

src/vsg/io/Output.cpp

@@ -15,6 +15,11 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
 
 using namespace vsg;
 
+Output::Output() :
+    Output(nullptr)
+{
+}
+
 Output::Output(ref_ptr<const Options> in_options) :
     options(in_options),
     version{vsgGetVersion()}