Add debug view mode to know which objects have tessellation

Assets/ScriptableRenderPipeline/HDRenderPipeline/Debug/DebugDisplay.cs

         public static int[] debugViewEngineValues = null;
         public static GUIContent[] debugViewMaterialVaryingStrings = null;
         public static int[] debugViewMaterialVaryingValues = null;
+        public static GUIContent[] debugViewMaterialPropertiesStrings = null;
+        public static int[] debugViewMaterialPropertiesValues = null;
         public static GUIContent[] debugViewMaterialGBufferStrings = null;
         public static int[] debugViewMaterialGBufferValues = null;
 
             materialDebugSettings.SetDebugViewVarying(value);
         }
 
+        public void SetDebugViewProperties(Attributes.DebugViewProperties value)
+        {
+            if (value != 0)
+                lightingDebugSettings.debugLightingMode = DebugLightingMode.None;
+            materialDebugSettings.SetDebugViewProperties(value);
+        }
+
         public void SetDebugViewGBuffer(int value)
         {
             if (value != 0)
             DebugMenuManager.instance.AddDebugItem<int>("Material", "Material",() => materialDebugSettings.debugViewMaterial, (value) => SetDebugViewMaterial((int)value), DebugItemFlag.None, new DebugItemHandlerIntEnum(DebugDisplaySettings.debugViewMaterialStrings, DebugDisplaySettings.debugViewMaterialValues));
             DebugMenuManager.instance.AddDebugItem<int>("Material", "Engine",() => materialDebugSettings.debugViewEngine, (value) => SetDebugViewEngine((int)value), DebugItemFlag.None, new DebugItemHandlerIntEnum(DebugDisplaySettings.debugViewEngineStrings, DebugDisplaySettings.debugViewEngineValues));
             DebugMenuManager.instance.AddDebugItem<Attributes.DebugViewVarying>("Material", "Attributes",() => materialDebugSettings.debugViewVarying, (value) => SetDebugViewVarying((Attributes.DebugViewVarying)value));
+            DebugMenuManager.instance.AddDebugItem<Attributes.DebugViewProperties>("Material", "Properties", () => materialDebugSettings.debugViewProperties, (value) => SetDebugViewProperties((Attributes.DebugViewProperties)value));
             DebugMenuManager.instance.AddDebugItem<int>("Material", "GBuffer",() => materialDebugSettings.debugViewGBuffer, (value) => SetDebugViewGBuffer((int)value), DebugItemFlag.None, new DebugItemHandlerIntEnum(DebugDisplaySettings.debugViewMaterialGBufferStrings, DebugDisplaySettings.debugViewMaterialGBufferValues));
 
             DebugMenuManager.instance.AddDebugItem<LightingDebugPanel, bool>(kEnableShadowDebug, () => lightingDebugSettings.enableShadows, (value) => lightingDebugSettings.enableShadows = (bool)value);
                 index = 0;
                 FillWithPropertiesEnum(typeof(Attributes.DebugViewVarying), debugViewMaterialVaryingStrings, debugViewMaterialVaryingValues, "", ref index);
 
+                // Properties debug
+                var propertiesNames = Enum.GetNames(typeof(Attributes.DebugViewProperties));
+                debugViewMaterialPropertiesStrings = new GUIContent[propertiesNames.Length];
+                debugViewMaterialPropertiesValues = new int[propertiesNames.Length];
+                index = 0;
+                FillWithPropertiesEnum(typeof(Attributes.DebugViewProperties), debugViewMaterialPropertiesStrings, debugViewMaterialPropertiesValues, "", ref index);
+
                 // Gbuffer debug
                 var gbufferNames = Enum.GetNames(typeof(Attributes.DebugViewGbuffer));
                 debugViewMaterialGBufferStrings = new GUIContent[gbufferNames.Length + bsdfDataDeferredType.GetFields().Length];
             Depth = DebugViewVarying.VertexColorAlpha + 1,
             BakeDiffuseLightingWithAlbedoPlusEmissive,
         }
+
+        // Number must be contiguous
+        [GenerateHLSL]
+        public enum DebugViewProperties
+        {
+            None = 0,
+            Tessellation = DebugViewGbuffer.BakeDiffuseLightingWithAlbedoPlusEmissive + 1,
+        }
     }
 
     [Serializable]
         public int debugViewEngine { get { return m_DebugViewEngine; } }
         public Attributes.DebugViewVarying debugViewVarying { get { return m_DebugViewVarying; } }
+        public Attributes.DebugViewProperties debugViewProperties { get { return m_DebugViewProperties; } }
+        Attributes.DebugViewProperties  m_DebugViewProperties = Attributes.DebugViewProperties.None;
         int                             m_DebugViewGBuffer = 0; // Can't use GBuffer enum here because the values are actually split between this enum and values from Lit.BSDFData
 
         public int GetDebugMaterialIndex()
             // They are all mutually exclusive so return the sum will return the right index.
-            return m_DebugViewGBuffer + m_DebugViewMaterial + m_DebugViewEngine + (int)m_DebugViewVarying;
+            return m_DebugViewGBuffer + m_DebugViewMaterial + m_DebugViewEngine + (int)m_DebugViewVarying + (int)m_DebugViewProperties;
         }
 
         public void DisableMaterialDebug()
             m_DebugViewVarying = Attributes.DebugViewVarying.None;
+            m_DebugViewProperties = Attributes.DebugViewProperties.None;
             m_DebugViewGBuffer = 0;
         }
 
                 DisableMaterialDebug();
             m_DebugViewVarying = value;
         }
+        public void SetDebugViewProperties(Attributes.DebugViewProperties value)
+        {
+            if (value != 0)
+                DisableMaterialDebug();
+            m_DebugViewProperties = value;
+        }
 
         public void SetDebugViewGBuffer(int value)
         {
 
         public bool IsDebugDisplayEnabled()
         {
-            return (m_DebugViewEngine != 0 || m_DebugViewMaterial != 0 || m_DebugViewVarying != Attributes.DebugViewVarying.None || m_DebugViewGBuffer != 0);
+            return (m_DebugViewEngine != 0 || m_DebugViewMaterial != 0 || m_DebugViewVarying != Attributes.DebugViewVarying.None || m_DebugViewProperties != Attributes.DebugViewProperties.None || m_DebugViewGBuffer != 0);
         }
     }
 

Assets/ScriptableRenderPipeline/HDRenderPipeline/Debug/DebugDisplay.cs.hlsl

 #define DEBUGVIEWGBUFFER_BAKE_DIFFUSE_LIGHTING_WITH_ALBEDO_PLUS_EMISSIVE (11)
 
 //
+// UnityEngine.Experimental.Rendering.HDPipeline.Attributes.DebugViewProperties:  static fields
+//
+#define DEBUGVIEWPROPERTIES_NONE (0)
+#define DEBUGVIEWPROPERTIES_TESSELLATION (12)
+
+//
 // UnityEngine.Experimental.Rendering.HDPipeline.FullScreenDebugMode:  static fields
 //
 #define FULLSCREENDEBUGMODE_NONE (0)

Assets/ScriptableRenderPipeline/HDRenderPipeline/Debug/DebugDisplay.hlsl

 float4 _DebugLightingAlbedo; // xyz = albedo for diffuse, w unused
 float4 _DebugLightingSmoothness; // x == bool override, y == override value
 
+void GetPropertiesDataDebug(uint paramId, inout float3 result, inout bool needLinearToSRGB)
+{
+    switch (paramId)
+    {
+        case DEBUGVIEWPROPERTIES_TESSELLATION:
+#ifdef TESSELLATION_ON
+        result = float3(1.0, 0.0, 0.0);
+#else
+        result = float3(0.0, 1.0, 0.0);
+#endif
+            break;
+    }
+}
+
 #endif

Assets/ScriptableRenderPipeline/HDRenderPipeline/ShaderPass/ShaderPassForward.hlsl

         float3 result = float3(1.0, 0.0, 1.0);
         bool needLinearToSRGB = false;
 
+        GetPropertiesDataDebug(_DebugViewMaterial, result, needLinearToSRGB);
         GetVaryingsDataDebug(_DebugViewMaterial, input, result, needLinearToSRGB);
         GetBuiltinDataDebug(_DebugViewMaterial, builtinData, result, needLinearToSRGB);
         GetSurfaceDataDebug(_DebugViewMaterial, surfaceData, result, needLinearToSRGB);