Change API enums to enum class, remove now redundant prefixing

* This gives a little nicer syntax, a bit better type safety, and also
  reflects better for SWIG bindings. Overall it's a minor change but
  better.
* We don't update the C# UI at all, since it's soon to be removed and
  not worth the effort/code churn.
* For now so we're ABI compatible with C#, all enums are uint32_t, but
  that is an obvious optimisation in future to reduce struct packing.
* We avoid 'None' as an enum value, because it's a reserved word in
  python so will cause problems generating bindings.

renderdocui/Interop/FetchInfo.cs

@@ -314,12 +314,6 @@ namespace renderdoc
         public UInt64 byteSize;
     };
 
-    [StructLayout(LayoutKind.Sequential)]
-    public class OutputConfig
-    {
-        public OutputType m_Type = OutputType.None;
-    };
-
     [StructLayout(LayoutKind.Sequential)]
     public class FetchFrameConstantBindStats
     {

renderdocui/Interop/ReplayRenderer.cs

@@ -118,8 +118,6 @@ namespace renderdoc
 
     public class ReplayOutput
     {
-        [DllImport("renderdoc.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)]
-        private static extern bool ReplayOutput_SetOutputConfig(IntPtr real, OutputConfig o);
         [DllImport("renderdoc.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)]
         private static extern bool ReplayOutput_SetTextureDisplay(IntPtr real, TextureDisplay o);
         [DllImport("renderdoc.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)]
@@ -158,10 +156,6 @@ namespace renderdoc
 
         public ReplayOutput(IntPtr real) { m_Real = real; }
 
-        public bool SetOutputConfig(OutputConfig o)
-        {
-            return ReplayOutput_SetOutputConfig(m_Real, o);
-        }
         public bool SetTextureDisplay(TextureDisplay o)
         {
             return ReplayOutput_SetTextureDisplay(m_Real, o);

renderdocui/Windows/BufferViewer.cs

@@ -203,7 +203,6 @@ namespace renderdocui.Windows
 
         private byte[] m_Zeroes = null;
 
-        private OutputConfig m_OutConfig = new OutputConfig();
         private MeshDisplay m_MeshDisplay = new MeshDisplay();
 
         private IntPtr RenderHandle = IntPtr.Zero;
@@ -301,8 +300,6 @@ namespace renderdocui.Windows
 
         private void ResetConfig()
         {
-            m_OutConfig.m_Type = OutputType.MeshDisplay;
-
             m_MeshDisplay = new MeshDisplay();
             m_MeshDisplay.type = MeshDataStage.VSIn;
             m_MeshDisplay.fov = 90.0f;
@@ -558,7 +555,6 @@ namespace renderdocui.Windows
                         return;
 
                     m_Output = r.CreateOutput(RenderHandle, OutputType.MeshDisplay);
-                    m_Output.SetOutputConfig(m_OutConfig);
                     RT_UpdateRenderOutput(r);
                     m_Output.Display(); // pump the display once, this will fetch postvs data
 

renderdocui/Windows/TextureViewer.cs

@@ -1090,9 +1090,6 @@ namespace renderdocui.Windows
 
         public void OnLogfileLoaded()
         {
-            var outConfig = new OutputConfig();
-            outConfig.m_Type = OutputType.TexDisplay;
-
             saveTex.Enabled = gotoLocationButton.Enabled = viewTexBuffer.Enabled = true;
 
             m_Following = Following.Default;
@@ -1111,7 +1108,6 @@ namespace renderdocui.Windows
             {
                 m_Output = r.CreateOutput(renderHandle, OutputType.TexDisplay);
                 m_Output.SetPixelContext(contextHandle);
-                m_Output.SetOutputConfig(outConfig);
 
                 this.BeginInvoke(new Action(UI_CreateThumbnails));
             });