HDRenderPipeline: Allow different keyword by layers

- Add keywork normal, specularocclusion, detailmap, mask to layered
shader
- Remove smoothness in alpha option
- Remove code related to detail heightmap
- Remove the restriction on GUI of layered lit layer 1, 2, 3 matching
layer 0

Assets/ScriptableRenderPipeline/HDRenderPipeline/Editor/HDRenderPipelineMenuItems.cs

             foreach (Object obj in materials)
             {
                 Material mat = obj as Material;
-                if (mat.shader.name == "HDRenderLoop/LayeredLit")
+                if (mat.shader.name == "HDRenderPipeline/LayeredLit" || mat.shader.name == "HDRenderPipeline/LayeredLitTessellation")
                 {
                     LayeredLitGUI.SynchronizeAllLayers(mat);
                 }

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/LayeredLit/Editor/LayeredLitUI.cs

 
         override protected void FindMaterialProperties(MaterialProperty[] props)
         {
-            FindMaterialOptionProperties(props);
-
             layerMaskMap = FindProperty(kLayerMaskMap, props);
             layerCount = FindProperty(kLayerCount, props);
             vertexColorMode = FindProperty(kVertexColorMode, props);
             }
         }
 
+        // This function will look for all referenced lit material, and assign value from Lit to layered lit layers.
+        // This is based on the naming of the variables, i.E BaseColor will match BaseColor0, if a properties shouldn't be override
+        // put the name in the exclusionList below
-            string[] exclusionList = { kTexWorldScale, kUVBase, kUVMappingMask, kUVDetail, kUVMappingPlanar, kUVDetailsMappingMask };
+            string[] exclusionList = { kTexWorldScale, kUVBase, kUVMappingMask, kUVMappingPlanar, kUVDetail, kUVDetailsMappingMask };
 
             Material layerMaterial = layers[layerIndex];
 
             }
         }
 
+        // We use the user data to save a string that represent the referenced lit material
+        // so we can keep reference during serialization
         static void InitializeMaterialLayers(AssetImporter materialImporter, ref Material[] layers)
         {
             if (materialImporter.userData != string.Empty)
             materialImporter.userData = JsonUtility.ToJson(layersGUID);
         }
 
-        bool CheckInputOptionConsistency(string optionName, string[] shortNames, ref string outValueNames)
-        {
-            bool result = true;
-            outValueNames = "";
-            for (int i = 0; i < numLayer; ++i)
-            {
-                Material layer = m_MaterialLayers[i];
-                if (layer != null)
-                {
-                    int currentValue = (int)layer.GetFloat(optionName); // All options are in fact enums
-                    Debug.Assert(currentValue < shortNames.Length);
-                    outValueNames += shortNames[currentValue] + "    ";
-
-                    for (int j = i + 1; j < numLayer; ++j)
-                    {
-                        Material otherLayer = m_MaterialLayers[j];
-                        if (otherLayer != null)
-                        {
-                            if (currentValue != (int)otherLayer.GetFloat(optionName))
-                            {
-                                result = false;
-                            }
-                        }
-                    }
-                }
-                else
-                {
-                    outValueNames += "X    ";
-                }
-            }
-
-            return result;
-        }
-
-        bool CheckInputFloatOptionConsistency(string optionName, ref string outValueNames)
-        {
-            bool result = true;
-            outValueNames = "";
-            for (int i = 0; i < numLayer; ++i)
-            {
-                Material layer = m_MaterialLayers[i];
-                if (layer != null)
-                {
-                    float currentValue = layer.GetFloat(optionName);
-
-                    for (int j = i + 1; j < numLayer; ++j)
-                    {
-                        Material otherLayer = m_MaterialLayers[j];
-                        if (otherLayer != null)
-                        {
-                            if (currentValue != otherLayer.GetFloat(optionName))
-                            {
-                                result = false;
-                            }
-                        }
-                    }
-                }
-                else
-                {
-                    outValueNames += "X    ";
-                }
-            }
-
-            return result;
-        }
-
-        bool CheckInputMapConsistency(string mapName, ref string outValueNames)
-        {
-            bool result = true;
-            outValueNames = "";
-            for (int i = 0; i < numLayer; ++i)
-            {
-                Material layer = m_MaterialLayers[i];
-                if (layer != null)
-                {
-                    bool currentValue = layer.GetTexture(mapName) != null;
-                    outValueNames += (currentValue ? "Y" : "N") + "    ";
-
-                    for (int j = i + 1; j < numLayer; ++j)
-                    {
-                        Material otherLayer = m_MaterialLayers[j];
-                        if (otherLayer != null)
-                        {
-                            bool otherValue = otherLayer.GetTexture(mapName) != null;
-                            if (currentValue != otherValue)
-                            {
-                                result = false;
-                            }
-                        }
-                    }
-                }
-                else
-                {
-                    outValueNames += "N    ";
-                }
-            }
-
-            return result;
-        }
-
-        void CheckLayerConsistency()
-        {
-            string optionValueNames = "";
-            // We need to check consistency between all layers.
-            // Each input options and each input maps can result in different #defines in the shader so all of them need to be consistent
-            // otherwise the result will be undetermined
-
-            // Input options consistency
-            string[] smoothnessSourceShortNames = { "Mask", "Albedo" };
-            string[] normalMapShortNames = { "Tan", "Obj" };
-            string[] detailModeShortNames = { "DNormal", "DAOHeight" };
-
-            string warningInputOptions = "";
-            if (!CheckInputOptionConsistency(kSmoothnessTextureChannel, smoothnessSourceShortNames, ref optionValueNames))
-            {
-                warningInputOptions += "Smoothness Source:    " + optionValueNames + "\n";
-            }
-            if (!CheckInputOptionConsistency(kNormalMapSpace, normalMapShortNames, ref optionValueNames))
-            {
-                warningInputOptions += "Normal Map Space:    " + optionValueNames + "\n";
-            }
-            if (!CheckInputOptionConsistency(kDetailMapMode, detailModeShortNames, ref optionValueNames))
-            {
-                warningInputOptions += "Detail Map Mode:    " + optionValueNames + "\n";
-            }
-
-            if (warningInputOptions != string.Empty)
-            {
-                warningInputOptions = "Input Option Consistency Error:\n" + warningInputOptions;
-            }
-
-            // Check input maps consistency
-            string warningInputMaps = "";
-
-            if (!CheckInputMapConsistency(kNormalMap, ref optionValueNames))
-            {
-                warningInputMaps += "Normal Map:    " + optionValueNames + "\n";
-            }
-            if (!CheckInputMapConsistency(kDetailMap, ref optionValueNames))
-            {
-                warningInputMaps += "Detail Map:    " + optionValueNames + "\n";
-            }
-            if (!CheckInputMapConsistency(kMaskMap, ref optionValueNames))
-            {
-                warningInputMaps += "Mask Map:    " + optionValueNames + "\n";
-            }
-            if (!CheckInputMapConsistency(kSpecularOcclusionMap, ref optionValueNames))
-            {
-                warningInputMaps += "Specular Occlusion Map:    " + optionValueNames + "\n";
-            }
-
-            if (warningInputMaps != string.Empty)
-            {
-                warningInputMaps = "Input Maps Consistency Error:\n" + warningInputMaps;
-                if (warningInputOptions != string.Empty)
-                    warningInputMaps = "\n" + warningInputMaps;
-            }
-
-            string warning = warningInputOptions + warningInputMaps;
-            if (warning != string.Empty)
-            {
-                EditorGUILayout.HelpBox(warning, MessageType.Error);
-            }
-        }
-
-        void SynchronizeInputOptions()
-        {
-            Material material = m_MaterialEditor.target as Material;
-
-            // We synchronize input options with the firsts non null Layer (all layers should have consistent options)
-            Material firstLayer = null;
-            int i = 0;
-            while (i < numLayer && !(firstLayer = m_MaterialLayers[i])) ++i;
-
-            if (firstLayer != null)
-            {
-                material.SetFloat(kSmoothnessTextureChannel, firstLayer.GetFloat(kSmoothnessTextureChannel));
-                material.SetFloat(kNormalMapSpace, firstLayer.GetFloat(kNormalMapSpace));
-                // Force emissive to be emissive color
-                material.SetFloat(kEmissiveColorMode, (float)EmissiveColorMode.UseEmissiveColor);
-            }
-        }
-
         bool DoLayerGUI(AssetImporter materialImporter, int layerIndex)
         {
             bool result = false;
         protected override void SetupMaterialKeywords(Material material)
         {
             SetupCommonOptionsKeywords(material);
-            SetupLayersKeywords(material);
-
-            // Find first non null layer
-            int i = 0;
-            while (i < numLayer && (m_MaterialLayers[i] == null)) ++i;
+            SetupLayersMappingKeywords(material);
-            if (i < numLayer)
+            for (int i = 0; i < kMaxLayerCount; ++i)
-                SetKeyword(material, "_NORMALMAP", material.GetTexture(kNormalMap + i));
-                SetKeyword(material, "_MASKMAP", material.GetTexture(kMaskMap + i));
-                SetKeyword(material, "_SPECULAROCCLUSIONMAP", material.GetTexture(kSpecularOcclusionMap + i));
-                SetKeyword(material, "_DETAIL_MAP", material.GetTexture(kDetailMap + i));
+                SetKeyword(material, "_NORMALMAP_TANGENT_SPACE" + i, ((NormalMapSpace)material.GetFloat(kNormalMapSpace + i)) == NormalMapSpace.TangentSpace);
-                SetKeyword(material, "_DETAIL_MAP_WITH_NORMAL", ((DetailMapMode)material.GetFloat(kDetailMapMode)) == DetailMapMode.DetailWithNormal);
-                SetKeyword(material, "_NORMALMAP_TANGENT_SPACE", ((NormalMapSpace)material.GetFloat(kNormalMapSpace)) == NormalMapSpace.TangentSpace);
-                SetKeyword(material, "_SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A", ((SmoothnessMapChannel)material.GetFloat(kSmoothnessTextureChannel)) == SmoothnessMapChannel.AlbedoAlpha);
+                SetKeyword(material, "_NORMALMAP" + i, material.GetTexture(kNormalMap + i));
+
+                SetKeyword(material, "_MASKMAP" + i, material.GetTexture(kMaskMap + i));
+
+                SetKeyword(material, "_SPECULAROCCLUSIONMAP" + i, material.GetTexture(kSpecularOcclusionMap + i));
+
+                SetKeyword(material, "_DETAIL_MAP" + i, material.GetTexture(kDetailMap + i));
+
+                SetKeyword(material, "_HEIGHTMAP0" + i, material.GetTexture(kHeightMap + i));
-
-            SetKeyword(material, "_HEIGHTMAP0", material.GetTexture(kHeightMap + 0));
-            SetKeyword(material, "_HEIGHTMAP1", material.GetTexture(kHeightMap + 1));
-            SetKeyword(material, "_HEIGHTMAP2", material.GetTexture(kHeightMap + 2));
-            SetKeyword(material, "_HEIGHTMAP3", material.GetTexture(kHeightMap + 3));
 
             bool perPixelDisplacement = material.GetFloat(kEnablePerPixelDisplacement) == 1.0;
             SetKeyword(material, "_PER_PIXEL_DISPLACEMENT", perPixelDisplacement);
 
             bool useDensityModeEnable = material.GetFloat(kUseDensityMode) != 0.0f;
             SetKeyword(material, "_DENSITY_MODE", useDensityModeEnable);
-            
-
-            // We have to check for each layer if the UV2 or UV3 is needed.
-            bool needUV3 = false;
-            bool needUV2 = false;
-            for (int layer = 0; layer < numLayer; ++layer)
-            {
-                string uvBase = string.Format("{0}{1}", kUVBase, layer);
-                string uvDetail = string.Format("{0}{1}", kUVDetail, layer);
-
-                if (    ((UVDetailMapping)material.GetFloat(uvDetail) == UVDetailMapping.UV2) ||
-                        ((LayerUVBaseMapping)material.GetFloat(uvBase) == LayerUVBaseMapping.UV2) )
-                {
-                    needUV2 = true;
-                }
-
-                if (    ((UVDetailMapping)material.GetFloat(uvDetail) == UVDetailMapping.UV3) ||
-                        ((LayerUVBaseMapping)material.GetFloat(uvBase) == LayerUVBaseMapping.UV3) )
-                {
-                    needUV3 = true;
-                    break; // If we find it UV3 let's early out
-                }
-            }
-
-            if (needUV3)
-            {
-                material.DisableKeyword("_REQUIRE_UV2");
-                material.EnableKeyword("_REQUIRE_UV3");
-            }
-            else if (needUV2)
-            {
-                material.EnableKeyword("_REQUIRE_UV2");
-                material.DisableKeyword("_REQUIRE_UV3");
-            }
-            else
-            {
-                material.DisableKeyword("_REQUIRE_UV2");
-                material.DisableKeyword("_REQUIRE_UV3");
-            }
-        void SetupLayersKeywords(Material material)
+        void SetupLayersMappingKeywords(Material material)
         {
             // object scale affect tile
             SetKeyword(material, "_LAYER_TILING_UNIFORM_SCALE", material.GetFloat(kObjectScaleAffectTile) > 0.0f);
                 SetKeyword(material, "_LAYEREDLIT_3_LAYERS", false);
             }
 
-            const string kLayerMappingTriplanar = "_LAYER_MAPPING_TRIPLANAR_";
+            const string kLayerMappingTriplanar = "_LAYER_MAPPING_TRIPLANAR";
+
+            // We have to check for each layer if the UV2 or UV3 is needed.
+            bool needUV3 = false;
+            bool needUV2 = false;
 
             for (int i = 0 ; i < numLayer; ++i)
             {
                 Z = (layerUVDetailMapping == UVDetailMapping.UV2) ? 1.0f : 0.0f;
                 W = (layerUVDetailMapping == UVDetailMapping.UV3) ? 1.0f : 0.0f;
                 layerUVDetailsMappingMask[i].colorValue = new Color(X, Y, Z, W);
+
+                string uvBase = string.Format("{0}{1}", kUVBase, i);
+                string uvDetail = string.Format("{0}{1}", kUVDetail, i);
+
+                if (((UVDetailMapping)material.GetFloat(uvDetail) == UVDetailMapping.UV2) ||
+                    ((LayerUVBaseMapping)material.GetFloat(uvBase) == LayerUVBaseMapping.UV2))
+                {
+                    needUV2 = true;
+                }
+
+                if (((UVDetailMapping)material.GetFloat(uvDetail) == UVDetailMapping.UV3) ||
+                    ((LayerUVBaseMapping)material.GetFloat(uvBase) == LayerUVBaseMapping.UV3))
+                {
+                    needUV3 = true;
+                    break; // If we find it UV3 let's early out
+                }
+            }
+
+            if (needUV3)
+            {
+                material.DisableKeyword("_REQUIRE_UV2");
+                material.EnableKeyword("_REQUIRE_UV3");
+            }
+            else if (needUV2)
+            {
+                material.EnableKeyword("_REQUIRE_UV2");
+                material.DisableKeyword("_REQUIRE_UV3");
+            }
+            else
+            {
+                material.DisableKeyword("_REQUIRE_UV2");
+                material.DisableKeyword("_REQUIRE_UV3");
             }
         }
 
             m_MaterialEditor.ShaderProperty(horizonFade, Styles.horizonFadeText);
             EditorGUI.indentLevel--;
 
-            CheckLayerConsistency();
-
-                SynchronizeInputOptions();
-
                 foreach (var obj in m_MaterialEditor.targets)
                 {
                     SetupMaterialKeywords((Material)obj);

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/LayeredLit/LayeredLit.shader

         // Following set of parameters represent the parameters node inside the MaterialGraph.
         // They are use to fill a SurfaceData. With a MaterialGraph this should not exist.
 
+        // All the following properties are filled by the referenced lit shader.
+
         // Reminder. Color here are in linear but the UI (color picker) do the conversion sRGB to linear
         _BaseColor0("BaseColor0", Color) = (1, 1, 1, 1)
         _BaseColor1("BaseColor1", Color) = (1, 1, 1, 1)
         _DetailSmoothnessScale2("_DetailSmoothnessScale2", Range(-2.0, 2.0)) = 1
         _DetailSmoothnessScale3("_DetailSmoothnessScale3", Range(-2.0, 2.0)) = 1
 
-        _DetailHeightScale0("_DetailHeightScale0", Range(-2.0, 2.0)) = 1
-        _DetailHeightScale1("_DetailHeightScale1", Range(-2.0, 2.0)) = 1
-        _DetailHeightScale2("_DetailHeightScale2", Range(-2.0, 2.0)) = 1
-        _DetailHeightScale3("_DetailHeightScale3", Range(-2.0, 2.0)) = 1
+        [Enum(TangentSpace, 0, ObjectSpace, 1)] _NormalMapSpace0("NormalMap space", Float) = 0
+        [Enum(TangentSpace, 0, ObjectSpace, 1)] _NormalMapSpace1("NormalMap space", Float) = 0
+        [Enum(TangentSpace, 0, ObjectSpace, 1)] _NormalMapSpace2("NormalMap space", Float) = 0
+        [Enum(TangentSpace, 0, ObjectSpace, 1)] _NormalMapSpace3("NormalMap space", Float) = 0
-        _DetailAOScale0("_DetailAOScale0", Range(-2.0, 2.0)) = 1
-        _DetailAOScale1("_DetailAOScale1", Range(-2.0, 2.0)) = 1
-        _DetailAOScale2("_DetailAOScale2", Range(-2.0, 2.0)) = 1
-        _DetailAOScale3("_DetailAOScale3", Range(-2.0, 2.0)) = 1
+        // All the following properties exist only in layered lit material
 
         // Layer blending options
         _LayerMaskMap("LayerMaskMap", 2D) = "white" {}
         _HeightFactor2("_HeightFactor2", Float) = 1
         _HeightFactor3("_HeightFactor3", Float) = 1
 
-        _LayerHeightAmplitude0("_LayerHeightAmplitude0", Float) = 1
-        _LayerHeightAmplitude1("_LayerHeightAmplitude1", Float) = 1
-        _LayerHeightAmplitude2("_LayerHeightAmplitude2", Float) = 1
-        _LayerHeightAmplitude3("_LayerHeightAmplitude3", Float) = 1
+        // Store result of combination of _HeightFactor and _HeightAmplitude0
+        [HideInInspector] _LayerHeightAmplitude0("_LayerHeightAmplitude0", Float) = 1
+        [HideInInspector] _LayerHeightAmplitude1("_LayerHeightAmplitude1", Float) = 1
+        [HideInInspector] _LayerHeightAmplitude2("_LayerHeightAmplitude2", Float) = 1
+        [HideInInspector] _LayerHeightAmplitude3("_LayerHeightAmplitude3", Float) = 1
 
         _HeightCenterOffset0("_HeightCenterOffset0", Float) = 0.0
         _HeightCenterOffset1("_HeightCenterOffset1", Float) = 0.0
-        _LayerCenterOffset0("_LayerCenterOffset0", Float) = 0.0
-        _LayerCenterOffset1("_LayerCenterOffset1", Float) = 0.0
-        _LayerCenterOffset2("_LayerCenterOffset2", Float) = 0.0
-        _LayerCenterOffset3("_LayerCenterOffset3", Float) = 0.0
+        // Store result of combination of _HeightCenterOffset0 and _HeightCenter0
+        [HideInInspector] _LayerCenterOffset0("_LayerCenterOffset0", Float) = 0.0
+        [HideInInspector] _LayerCenterOffset1("_LayerCenterOffset1", Float) = 0.0
+        [HideInInspector] _LayerCenterOffset2("_LayerCenterOffset2", Float) = 0.0
+        [HideInInspector] _LayerCenterOffset3("_LayerCenterOffset3", Float) = 0.0
 
         _BlendUsingHeight1("_BlendUsingHeight1", Float) = 0.0
         _BlendUsingHeight2("_BlendUsingHeight2", Float) = 0.0
         _LayerTiling2("_LayerTiling2", Float) = 1
         _LayerTiling3("_LayerTiling3", Float) = 1
 
+        [HideInInspector] _LayerCount("_LayerCount", Float) = 2.0
+
+        [Enum(None, 0, Multiply, 1, Add, 2)] _VertexColorMode("Vertex color mode", Float) = 0
+        
+        [ToggleOff]  _ObjectScaleAffectTile("_ObjectScaleAffectTile", Float) = 0.0
+        [Enum(UV0, 0, Planar, 4, Triplanar, 5)] _UVBlendMask("UV Set for blendMask", Float) = 0
+        [HideInInspector] _UVMappingPlanarBlendMask("_UVMappingPlanarBlendMask", Float) = 0.0
+        _TexWorldScaleBlendMask("Tiling", Float) = 1.0
+
+        // Following are builtin properties
+
         _DistortionVectorMap("DistortionVectorMap", 2D) = "black" {}
 
         _EmissiveColor("EmissiveColor", Color) = (0, 0, 0)
 
         [Enum(None, 0, DoubleSided, 1, DoubleSidedLigthingFlip, 2, DoubleSidedLigthingMirror, 3)] _DoubleSidedMode("Double sided mode", Float) = 0
 
-        [Enum(Mask Alpha, 0, BaseColor Alpha, 1)] _SmoothnessTextureChannel("Smoothness texture channel", Float) = 1
-        [Enum(TangentSpace, 0, ObjectSpace, 1)] _NormalMapSpace("NormalMap space", Float) = 0
-        [Enum(DetailMapNormal, 0, DetailMapAOHeight, 1)] _DetailMapMode("DetailMap mode", Float) = 0
-        [HideInInspector] _LayerCount("_LayerCount", Float) = 2.0
-
-        [Enum(None, 0, Multiply, 1, Add, 2)] _VertexColorMode("Vertex color mode", Float) = 0
-        
-        [ToggleOff]  _ObjectScaleAffectTile("_ObjectScaleAffectTile", Float) = 0.0
-        [Enum(UV0, 0, Planar, 4, Triplanar, 5)] _UVBlendMask("UV Set for blendMask", Float) = 0
-        [HideInInspector] _UVMappingPlanarBlendMask("_UVMappingPlanarBlendMask", Float) = 0.0
-        _TexWorldScaleBlendMask("Tiling", Float) = 1.0
-
         // WARNING
         // All the following properties that concern the UV mapping are the same as in the Lit shader.
         // This means that they will get overridden when synchronizing the various layers.
     #pragma shader_feature _DEPTHOFFSET_ON
     #pragma shader_feature _ _DOUBLESIDED _DOUBLESIDED_LIGHTING_FLIP _DOUBLESIDED_LIGHTING_MIRROR
 
-    #pragma shader_feature _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A
-    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR_0
-    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR_1
-    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR_2
-    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR_3
-    #pragma shader_feature _DETAIL_MAP_WITH_NORMAL
-    #pragma shader_feature _NORMALMAP_TANGENT_SPACE   
+    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR0
+    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR1
+    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR2
+    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR3
+    #pragma shader_feature _NORMALMAP_TANGENT_SPACE0
+    #pragma shader_feature _NORMALMAP_TANGENT_SPACE1
+    #pragma shader_feature _NORMALMAP_TANGENT_SPACE2
+    #pragma shader_feature _NORMALMAP_TANGENT_SPACE3
-    #pragma shader_feature _NORMALMAP
-    #pragma shader_feature _MASKMAP
-    #pragma shader_feature _SPECULAROCCLUSIONMAP
+    #pragma shader_feature _NORMALMAP0
+    #pragma shader_feature _NORMALMAP1
+    #pragma shader_feature _NORMALMAP2
+    #pragma shader_feature _NORMALMAP3
+    #pragma shader_feature _MASKMAP0
+    #pragma shader_feature _MASKMAP1
+    #pragma shader_feature _MASKMAP2
+    #pragma shader_feature _MASKMAP3
+    #pragma shader_feature _SPECULAROCCLUSIONMAP0
+    #pragma shader_feature _SPECULAROCCLUSIONMAP1
+    #pragma shader_feature _SPECULAROCCLUSIONMAP2
+    #pragma shader_feature _SPECULAROCCLUSIONMAP3
-    #pragma shader_feature _DETAIL_MAP
+    #pragma shader_feature _DETAIL_MAP0
+    #pragma shader_feature _DETAIL_MAP1
+    #pragma shader_feature _DETAIL_MAP2
+    #pragma shader_feature _DETAIL_MAP3
     #pragma shader_feature _ _LAYER_MASK_VERTEX_COLOR_MUL _LAYER_MASK_VERTEX_COLOR_ADD
     #pragma shader_feature _MAIN_LAYER_INFLUENCE_MODE
     #pragma shader_feature _DENSITY_MODE
         }
     }
 
-	CustomEditor "Experimental.Rendering.HDPipeline.LayeredLitGUI"
+    CustomEditor "Experimental.Rendering.HDPipeline.LayeredLitGUI"
 }

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/LayeredLit/LayeredLitTessellation.shader

-Shader "HDRenderPipeline/LayeredLitTesselation"
+Shader "HDRenderPipeline/LayeredLitTessellation"
+
+        // All the following properties are filled by the referenced lit shader.
 
         // Reminder. Color here are in linear but the UI (color picker) do the conversion sRGB to linear
         _BaseColor0("BaseColor0", Color) = (1, 1, 1, 1)
         _DetailSmoothnessScale2("_DetailSmoothnessScale2", Range(-2.0, 2.0)) = 1
         _DetailSmoothnessScale3("_DetailSmoothnessScale3", Range(-2.0, 2.0)) = 1
 
-        _DetailHeightScale0("_DetailHeightScale0", Range(-2.0, 2.0)) = 1
-        _DetailHeightScale1("_DetailHeightScale1", Range(-2.0, 2.0)) = 1
-        _DetailHeightScale2("_DetailHeightScale2", Range(-2.0, 2.0)) = 1
-        _DetailHeightScale3("_DetailHeightScale3", Range(-2.0, 2.0)) = 1
+        [Enum(TangentSpace, 0, ObjectSpace, 1)] _NormalMapSpace0("NormalMap space", Float) = 0
+        [Enum(TangentSpace, 0, ObjectSpace, 1)] _NormalMapSpace1("NormalMap space", Float) = 0
+        [Enum(TangentSpace, 0, ObjectSpace, 1)] _NormalMapSpace2("NormalMap space", Float) = 0
+        [Enum(TangentSpace, 0, ObjectSpace, 1)] _NormalMapSpace3("NormalMap space", Float) = 0
-        _DetailAOScale0("_DetailAOScale0", Range(-2.0, 2.0)) = 1
-        _DetailAOScale1("_DetailAOScale1", Range(-2.0, 2.0)) = 1
-        _DetailAOScale2("_DetailAOScale2", Range(-2.0, 2.0)) = 1
-        _DetailAOScale3("_DetailAOScale3", Range(-2.0, 2.0)) = 1
+        // All the following properties exist only in layered lit material
 
         // Layer blending options
         _LayerMaskMap("LayerMaskMap", 2D) = "white" {}
         _HeightFactor2("_HeightFactor2", Float) = 1
         _HeightFactor3("_HeightFactor3", Float) = 1
 
-        _LayerHeightAmplitude0("_LayerHeightAmplitude0", Float) = 1
-        _LayerHeightAmplitude1("_LayerHeightAmplitude1", Float) = 1
-        _LayerHeightAmplitude2("_LayerHeightAmplitude2", Float) = 1
-        _LayerHeightAmplitude3("_LayerHeightAmplitude3", Float) = 1
+        // Store result of combination of _HeightFactor and _HeightAmplitude0
+        [HideInInspector] _LayerHeightAmplitude0("_LayerHeightAmplitude0", Float) = 1
+        [HideInInspector] _LayerHeightAmplitude1("_LayerHeightAmplitude1", Float) = 1
+        [HideInInspector] _LayerHeightAmplitude2("_LayerHeightAmplitude2", Float) = 1
+        [HideInInspector] _LayerHeightAmplitude3("_LayerHeightAmplitude3", Float) = 1
 
         _HeightCenterOffset0("_HeightCenterOffset0", Float) = 0.0
         _HeightCenterOffset1("_HeightCenterOffset1", Float) = 0.0
-        _LayerCenterOffset0("_LayerCenterOffset0", Float) = 0.0
-        _LayerCenterOffset1("_LayerCenterOffset1", Float) = 0.0
-        _LayerCenterOffset2("_LayerCenterOffset2", Float) = 0.0
-        _LayerCenterOffset3("_LayerCenterOffset3", Float) = 0.0
+        // Store result of combination of _HeightCenterOffset0 and _HeightCenter0
+        [HideInInspector] _LayerCenterOffset0("_LayerCenterOffset0", Float) = 0.0
+        [HideInInspector] _LayerCenterOffset1("_LayerCenterOffset1", Float) = 0.0
+        [HideInInspector] _LayerCenterOffset2("_LayerCenterOffset2", Float) = 0.0
+        [HideInInspector] _LayerCenterOffset3("_LayerCenterOffset3", Float) = 0.0
 
         _BlendUsingHeight1("_BlendUsingHeight1", Float) = 0.0
         _BlendUsingHeight2("_BlendUsingHeight2", Float) = 0.0
         _LayerTiling2("_LayerTiling2", Float) = 1
         _LayerTiling3("_LayerTiling3", Float) = 1
 
+        [HideInInspector] _LayerCount("_LayerCount", Float) = 2.0
+
+        [Enum(None, 0, Multiply, 1, Add, 2)] _VertexColorMode("Vertex color mode", Float) = 0
+        
+        [ToggleOff]  _ObjectScaleAffectTile("_ObjectScaleAffectTile", Float) = 0.0
+        [Enum(UV0, 0, Planar, 4, Triplanar, 5)] _UVBlendMask("UV Set for blendMask", Float) = 0
+        [HideInInspector] _UVMappingPlanarBlendMask("_UVMappingPlanarBlendMask", Float) = 0.0
+        _TexWorldScaleBlendMask("Tiling", Float) = 1.0
+
+        // Following are builtin properties
+
         _DistortionVectorMap("DistortionVectorMap", 2D) = "black" {}
 
         _EmissiveColor("EmissiveColor", Color) = (0, 0, 0)
 
         [Enum(None, 0, DoubleSided, 1, DoubleSidedLigthingFlip, 2, DoubleSidedLigthingMirror, 3)] _DoubleSidedMode("Double sided mode", Float) = 0
 
-        [Enum(Mask Alpha, 0, BaseColor Alpha, 1)] _SmoothnessTextureChannel("Smoothness texture channel", Float) = 1
-        [Enum(TangentSpace, 0, ObjectSpace, 1)] _NormalMapSpace("NormalMap space", Float) = 0
-        [Enum(DetailMapNormal, 0, DetailMapAOHeight, 1)] _DetailMapMode("DetailMap mode", Float) = 0
-
-        [HideInInspector] _LayerCount("_LayerCount", Float) = 2.0
-
-        [Enum(None, 0, Multiply, 1, Add, 2)] _VertexColorMode("Vertex color mode", Float) = 0
-
-        [ToggleOff]  _ObjectScaleAffectTile("_ObjectScaleAffectTile", Float) = 0.0
-        [Enum(UV0, 0, Planar, 4, Triplanar, 5)] _UVBlendMask("UV Set for blendMask", Float) = 0
-        [HideInInspector] _UVMappingPlanarBlendMask("_UVMappingPlanarBlendMask", Float) = 0.0
-        _TexWorldScaleBlendMask("Tiling", Float) = 1.0
 
         // WARNING
         // All the following properties that concern the UV mapping are the same as in the Lit shader.
     #pragma shader_feature _ _TESSELLATION_DISPLACEMENT _TESSELLATION_DISPLACEMENT_PHONG
     #pragma shader_feature _TESSELLATION_OBJECT_SCALE
 
-    #pragma shader_feature _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A
-    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR_0
-    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR_1
-    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR_2
-    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR_3
-    #pragma shader_feature _DETAIL_MAP_WITH_NORMAL
-    #pragma shader_feature _NORMALMAP_TANGENT_SPACE   
+    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR0
+    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR1
+    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR2
+    #pragma shader_feature _LAYER_MAPPING_TRIPLANAR3
+    #pragma shader_feature _NORMALMAP_TANGENT_SPACE0
+    #pragma shader_feature _NORMALMAP_TANGENT_SPACE1
+    #pragma shader_feature _NORMALMAP_TANGENT_SPACE2
+    #pragma shader_feature _NORMALMAP_TANGENT_SPACE3
-    #pragma shader_feature _NORMALMAP
-    #pragma shader_feature _MASKMAP
-    #pragma shader_feature _SPECULAROCCLUSIONMAP
+    #pragma shader_feature _NORMALMAP0
+    #pragma shader_feature _NORMALMAP1
+    #pragma shader_feature _NORMALMAP2
+    #pragma shader_feature _NORMALMAP3
+    #pragma shader_feature _MASKMAP0
+    #pragma shader_feature _MASKMAP1
+    #pragma shader_feature _MASKMAP2
+    #pragma shader_feature _MASKMAP3
+    #pragma shader_feature _SPECULAROCCLUSIONMAP0
+    #pragma shader_feature _SPECULAROCCLUSIONMAP1
+    #pragma shader_feature _SPECULAROCCLUSIONMAP2
+    #pragma shader_feature _SPECULAROCCLUSIONMAP3
-    #pragma shader_feature _DETAIL_MAP
+    #pragma shader_feature _DETAIL_MAP0
+    #pragma shader_feature _DETAIL_MAP1
+    #pragma shader_feature _DETAIL_MAP2
+    #pragma shader_feature _DETAIL_MAP3
     #pragma shader_feature _ _LAYER_MASK_VERTEX_COLOR_MUL _LAYER_MASK_VERTEX_COLOR_ADD
     #pragma shader_feature _MAIN_LAYER_INFLUENCE_MODE
     #pragma shader_feature _DENSITY_MODE
             #include "../../Lighting/Forward.hlsl"
             #include "HDRenderPipeline/Debug/HDRenderPipelineDebug.cs.hlsl"
             #include "HDRenderPipeline/Debug/DebugLighting.hlsl"
-            
             // TEMP until pragma work in include
             #pragma multi_compile LIGHTLOOP_SINGLE_PASS LIGHTLOOP_TILE_PASS
 

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/Editor/BaseLitUI.cs

             public static GUIContent metallicText = new GUIContent("Metallic", "Metallic scale factor");
             public static GUIContent smoothnessText = new GUIContent("Smoothness", "Smoothness scale factor");
             public static GUIContent maskMapESText = new GUIContent("Mask Map - M(R), AO(G), E(B), S(A)", "Mask map");
-            public static GUIContent maskMapEText = new GUIContent("Mask Map - M(R), AO(G), E(B)", "Mask map");
-            public static GUIContent maskMapText = new GUIContent("Mask Map - M(R), AO(G)", "Mask map");
             public static GUIContent maskMapSText = new GUIContent("Mask Map - M(R), AO(G), S(A)", "Mask map");
 
             public static GUIContent specularOcclusionMapText = new GUIContent("Specular Occlusion Map (RGBA)", "Specular Occlusion Map");
             public static GUIContent anisotropyMapText = new GUIContent("Anisotropy Map (B)", "Anisotropy");
 
             public static GUIContent detailMapNormalText = new GUIContent("Detail Map A(R) Ny(G) S(B) Nx(A)", "Detail Map");
-            public static GUIContent detailMapAOHeightText = new GUIContent("Detail Map  A(R) AO(G) S(B) H(A)", "Detail Map");
             public static GUIContent detailMaskText = new GUIContent("Detail Mask (G)", "Mask for detailMap");
             public static GUIContent detailAlbedoScaleText = new GUIContent("Detail AlbedoScale", "Detail Albedo Scale factor");
             public static GUIContent detailNormalScaleText = new GUIContent("Detail NormalScale", "Normal Scale factor");

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/Editor/LitUI.cs

 {
     class LitGUI : BaseLitGUI
     {
-        public enum SmoothnessMapChannel
-        {
-            MaskAlpha,
-            AlbedoAlpha,
-        }
-
         public enum UVBaseMapping
         {
             UV0,
             Displacement,
         }
 
-        public enum DetailMapMode
-        {
-            DetailWithNormal,
-            DetailWithAOHeight,
-        }
-
         public enum UVDetailMapping
         {
             UV0,
             SpecularColor = 3
         }
 
-        protected MaterialProperty smoothnessMapChannel = null;
-        protected const string kSmoothnessTextureChannel = "_SmoothnessTextureChannel";
         protected MaterialProperty UVBase = null;
         protected const string kUVBase = "_UVBase";
         protected MaterialProperty TexWorldScale = null;
         protected const string kUVMappingPlanar = "_UVMappingPlanar";      
         protected MaterialProperty normalMapSpace = null;
         protected const string kNormalMapSpace = "_NormalMapSpace";
-        protected MaterialProperty detailMapMode = null;
-        protected const string kDetailMapMode = "_DetailMapMode";
         protected MaterialProperty UVDetail = null;
         protected const string kUVDetail = "_UVDetail";
         protected MaterialProperty UVDetailsMappingMask = null;
         protected const string kDetailNormalScale = "_DetailNormalScale";
         protected MaterialProperty detailSmoothnessScale = null;
         protected const string kDetailSmoothnessScale = "_DetailSmoothnessScale";
-        protected MaterialProperty detailHeightScale = null;
-        protected const string kDetailHeightScale = "_DetailHeightScale";
-        protected MaterialProperty detailAOScale = null;
-        protected const string kDetailAOScale = "_DetailAOScale";
 
         protected MaterialProperty emissiveColor = null;
         protected const string kEmissiveColor = "_EmissiveColor";
         protected MaterialProperty thicknessMap         = null;
         protected const string     kThicknessMap        = "_ThicknessMap";
 
-        // These are options that are shared with the LayeredLit shader. Don't put anything that can't be shared here:
-        // For instance, properties like BaseColor and such don't exist in the LayeredLit so don't put them here.
-        protected void FindMaterialOptionProperties(MaterialProperty[] props)
+        override protected void FindMaterialProperties(MaterialProperty[] props)
-            smoothnessMapChannel = FindProperty(kSmoothnessTextureChannel, props);
-            normalMapSpace = FindProperty(kNormalMapSpace, props);                      
-            detailMapMode = FindProperty(kDetailMapMode, props);
+            normalMapSpace = FindProperty(kNormalMapSpace, props);
-        }
-
-        override protected void FindMaterialProperties(MaterialProperty[] props)
-        {
-            FindMaterialOptionProperties(props);
 
             baseColor = FindProperty(kBaseColor, props);
             baseColorMap = FindProperty(kBaseColorMap, props);
             detailAlbedoScale = FindProperty(kDetailAlbedoScale, props);
             detailNormalScale = FindProperty(kDetailNormalScale, props);
             detailSmoothnessScale = FindProperty(kDetailSmoothnessScale, props);
-            detailHeightScale = FindProperty(kDetailHeightScale, props);
-            detailAOScale = FindProperty(kDetailAOScale, props);
 
             emissiveColor = FindProperty(kEmissiveColor, props);
             emissiveColorMap = FindProperty(kEmissiveColorMap, props);
             EditorGUI.indentLevel++;
             GUILayout.Label(Styles.InputsOptionsText, EditorStyles.boldLabel);
             m_MaterialEditor.ShaderProperty(materialID, Styles.materialIDText);
-
-            m_MaterialEditor.ShaderProperty(smoothnessMapChannel, Styles.smoothnessMapChannelText);
             m_MaterialEditor.ShaderProperty(UVBase, enableUVDetail ? Styles.UVBaseDetailMappingText : Styles.UVBaseMappingText);
 
             float X, Y, Z, W;
             W = ((UVDetailMapping)UVDetail.floatValue == UVDetailMapping.UV3) ? 1.0f : 0.0f;
             UVDetailsMappingMask.colorValue = new Color(X, Y, Z, W);
 
-            //m_MaterialEditor.ShaderProperty(detailMapMode, Styles.detailMapModeText);
             m_MaterialEditor.ShaderProperty(normalMapSpace, Styles.normalMapSpaceText);
             m_MaterialEditor.ShaderProperty(emissiveColorMode, Styles.emissiveColorModeText);            
 
         override protected void ShaderInputGUI()
         {
             EditorGUI.indentLevel++;
-            bool smoothnessInAlbedoAlpha = (SmoothnessMapChannel)smoothnessMapChannel.floatValue == SmoothnessMapChannel.AlbedoAlpha;
-            bool useDetailMapWithNormal = (DetailMapMode)detailMapMode.floatValue == DetailMapMode.DetailWithNormal;
-            m_MaterialEditor.TexturePropertySingleLine(smoothnessInAlbedoAlpha ? Styles.baseColorSmoothnessText : Styles.baseColorText, baseColorMap, baseColor);
+            m_MaterialEditor.TexturePropertySingleLine(Styles.baseColorText, baseColorMap, baseColor);
-            if (smoothnessInAlbedoAlpha && useEmissiveMask)
-                m_MaterialEditor.TexturePropertySingleLine(Styles.maskMapEText, maskMap);
-            else if (smoothnessInAlbedoAlpha && !useEmissiveMask)
-                m_MaterialEditor.TexturePropertySingleLine(Styles.maskMapText, maskMap);
-            else if (!smoothnessInAlbedoAlpha && useEmissiveMask)
+            if (useEmissiveMask)
-            else if (!smoothnessInAlbedoAlpha && !useEmissiveMask)
+            else
                 m_MaterialEditor.TexturePropertySingleLine(Styles.maskMapSText, maskMap);
 
             m_MaterialEditor.TexturePropertySingleLine(Styles.specularOcclusionMapText, specularOcclusionMap);
 
             m_MaterialEditor.TexturePropertySingleLine(Styles.detailMaskText, detailMask);               
 
-            if (useDetailMapWithNormal)
-            {
-                m_MaterialEditor.TexturePropertySingleLine(Styles.detailMapNormalText, detailMap);
-            }
-            else
-            {
-                m_MaterialEditor.TexturePropertySingleLine(Styles.detailMapAOHeightText, detailMap);
-            }
+            m_MaterialEditor.TexturePropertySingleLine(Styles.detailMapNormalText, detailMap);
-            //m_MaterialEditor.ShaderProperty(detailHeightScale, Styles.detailHeightScaleText);
-            //m_MaterialEditor.ShaderProperty(detailAOScale, Styles.detailAOScaleText);
             EditorGUI.indentLevel--;
 
             EditorGUILayout.Space();
 
             // Note: keywords must be based on Material value not on MaterialProperty due to multi-edit & material animation
             // (MaterialProperty value might come from renderer material property block)
-            SetKeyword(material, "_SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A", ((SmoothnessMapChannel)material.GetFloat(kSmoothnessTextureChannel)) == SmoothnessMapChannel.AlbedoAlpha);
-            SetKeyword(material, "_DETAIL_MAP_WITH_NORMAL", ((DetailMapMode)material.GetFloat(kDetailMapMode)) == DetailMapMode.DetailWithNormal);
             SetKeyword(material, "_EMISSIVE_COLOR", ((EmissiveColorMode)material.GetFloat(kEmissiveColorMode)) == EmissiveColorMode.UseEmissiveColor);
 
 			SetKeyword(material, "_NORMALMAP", material.GetTexture(kNormalMap) || material.GetTexture(kDetailMap)); // With details map, we always use a normal map and Unity provide a default (0, 0, 1) normal map for ir

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/Lit.shader

         _HeightAmplitude("Height Amplitude", Float) = 0.01 // In world units
         _HeightCenter("Height Center", Float) = 0.5 // In texture space
 
-        _TangentMap("TangentMap", 2D) = "bump" {}
-        _Anisotropy("Anisotropy", Range(0.0, 1.0)) = 0
-        _AnisotropyMap("AnisotropyMap", 2D) = "white" {}
-
-        _DetailHeightScale("_DetailHeightScale", Range(-2.0, 2.0)) = 1
-        _DetailAOScale("_DetailAOScale", Range(-2.0, 2.0)) = 1
+
+        _TangentMap("TangentMap", 2D) = "bump" {}
+        _Anisotropy("Anisotropy", Range(0.0, 1.0)) = 0
+        _AnisotropyMap("AnisotropyMap", 2D) = "white" {}
-        _SubsurfaceRadius("Subsurface Radius", Range(0.004, 1.0)) = 0.5
+        _SubsurfaceRadius("Subsurface Radius", Range(0.004, 1.0)) = 1.0
         _SubsurfaceRadiusMap("Subsurface Radius Map", 2D) = "white" {}
         _Thickness("Thickness", Range(0.004, 1.0)) = 0.5
         _ThicknessMap("Thickness Map", 2D) = "white" {}
 
         [Enum(None, 0, DoubleSided, 1, DoubleSidedLigthingFlip, 2, DoubleSidedLigthingMirror, 3)] _DoubleSidedMode("Double sided mode", Float) = 0
 
-        [Enum(Mask Alpha, 0, BaseColor Alpha, 1)] _SmoothnessTextureChannel("Smoothness texture channel", Float) = 1
         [Enum(UV0, 0, Planar, 1, TriPlanar, 2)] _UVBase("UV Set for base", Float) = 0
         _TexWorldScale("Scale to apply on world coordinate", Float) = 1.0
         [HideInInspector] _UVMappingMask("_UVMappingMask", Color) = (1, 0, 0, 0)
         _PPDMinSamples("Min sample for POM", Range(1.0, 64.0)) = 5
         _PPDMaxSamples("Max sample for POM", Range(1.0, 64.0)) = 15
         _PPDLodThreshold("Start lod to fade out the POM effect", Range(0.0, 16.0)) = 5
-        [Enum(DetailMapNormal, 0, DetailMapAOHeight, 1)] _DetailMapMode("DetailMap mode", Float) = 0
         [Enum(UV0, 0, UV1, 1, UV2, 2, UV3, 3)] _UVDetail("UV Set for detail", Float) = 0
         [HideInInspector] _UVDetailsMappingMask("_UVDetailsMappingMask", Color) = (1, 0, 0, 0)
         [Enum(Use Emissive Color, 0, Use Emissive Mask, 1)] _EmissiveColorMode("Emissive color mode", Float) = 1        
     #pragma shader_feature _DEPTHOFFSET_ON
     #pragma shader_feature _ _DOUBLESIDED _DOUBLESIDED_LIGHTING_FLIP _DOUBLESIDED_LIGHTING_MIRROR
 
-    #pragma shader_feature _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A
-    #pragma shader_feature _DETAIL_MAP_WITH_NORMAL
     #pragma shader_feature _NORMALMAP_TANGENT_SPACE
     #pragma shader_feature _PER_PIXEL_DISPLACEMENT
     #pragma shader_feature _ _REQUIRE_UV2 _REQUIRE_UV3

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/LitData.hlsl

 #define LAYER_INDEX 0
 #define ADD_IDX(Name) Name
 #define ADD_ZERO_IDX(Name) Name
+#ifdef _NORMALMAP
+#define _NORMALMAP_IDX
+#endif
+#ifdef _NORMALMAP_TANGENT_SPACE
+#define _NORMALMAP_TANGENT_SPACE_IDX
+#endif
+#ifdef _DETAIL_MAP
+#define _DETAIL_MAP_IDX
+#endif
+#ifdef _MASKMAP
+#define _MASKMAP_IDX
+#endif
+#ifdef _SPECULAROCCLUSIONMAP
+#define _SPECULAROCCLUSIONMAP_IDX
+#endif
 #include "LitDataInternal.hlsl"
 
 void GetLayerTexCoord(float2 texCoord0, float2 texCoord1, float2 texCoord2, float2 texCoord3,
 #if defined(_HEIGHTMAP)
     if (layerTexCoord.base.isTriplanar)
     {
-        minUvSize = min(layerTexCoord.base.uvYZ * _HeightMap_TexelSize.zw, minUvSize);
-        minUvSize = min(layerTexCoord.base.uvZX * _HeightMap_TexelSize.zw, minUvSize);
+        minUvSize = min(layerTexCoord.base.uvZY * _HeightMap_TexelSize.zw, minUvSize);
+        minUvSize = min(layerTexCoord.base.uvXZ * _HeightMap_TexelSize.zw, minUvSize);
         minUvSize = min(layerTexCoord.base.uvXY * _HeightMap_TexelSize.zw, minUvSize);
     }
     else
             // apply the 3 offset on all layers
             /*
 
-            ppdParam.uv = layerTexCoord.base0.uvYZ;
+            ppdParam.uv = layerTexCoord.base0.uvZY;
 
             float3 viewDirTS = ;
             int numSteps = (int)lerp(_PPDMaxSamples, _PPDMinSamples, abs(viewDirTS.z));
 // include LitDataInternal multiple time to define the variation of GetSurfaceData for each layer
 #define LAYER_INDEX 0
 #define ADD_IDX(Name) Name##0
+#ifdef _NORMALMAP0
+#define _NORMALMAP_IDX
+#endif
+#ifdef _NORMALMAP_TANGENT_SPACE0
+#define _NORMALMAP_TANGENT_SPACE_IDX
+#endif
+#ifdef _DETAIL_MAP0
+#define _DETAIL_MAP_IDX
+#endif
+#ifdef _MASKMAP0
+#define _MASKMAP_IDX
+#endif
+#ifdef _SPECULAROCCLUSIONMAP0
+#define _SPECULAROCCLUSIONMAP_IDX
+#endif
+#undef _NORMALMAP_IDX 
+#undef _NORMALMAP_TANGENT_SPACE_IDX 
+#undef _DETAIL_MAP_IDX 
+#undef _MASKMAP_IDX 
+#undef _SPECULAROCCLUSIONMAP_IDX 
+#ifdef _NORMALMAP1
+#define _NORMALMAP_IDX
+#endif
+#ifdef _NORMALMAP_TANGENT_SPACE1
+#define _NORMALMAP_TANGENT_SPACE_IDX
+#endif
+#ifdef _DETAIL_MAP1
+#define _DETAIL_MAP_IDX
+#endif
+#ifdef _MASKMAP1
+#define _MASKMAP_IDX
+#endif
+#ifdef _SPECULAROCCLUSIONMAP1
+#define _SPECULAROCCLUSIONMAP_IDX
+#endif
+#undef _NORMALMAP_IDX 
+#undef _NORMALMAP_TANGENT_SPACE_IDX 
+#undef _DETAIL_MAP_IDX 
+#undef _MASKMAP_IDX 
+#undef _SPECULAROCCLUSIONMAP_IDX 
+#ifdef _NORMALMAP2
+#define _NORMALMAP_IDX
+#endif
+#ifdef _NORMALMAP_TANGENT_SPACE2
+#define _NORMALMAP_TANGENT_SPACE_IDX
+#endif
+#ifdef _DETAIL_MAP2
+#define _DETAIL_MAP_IDX
+#endif
+#ifdef _MASKMAP2
+#define _MASKMAP_IDX
+#endif
+#ifdef _SPECULAROCCLUSIONMAP2
+#define _SPECULAROCCLUSIONMAP_IDX
+#endif
+#undef _NORMALMAP_IDX 
+#undef _NORMALMAP_TANGENT_SPACE_IDX 
+#undef _DETAIL_MAP_IDX 
+#undef _MASKMAP_IDX 
+#undef _SPECULAROCCLUSIONMAP_IDX 
+#ifdef _NORMALMAP3
+#define _NORMALMAP_IDX
+#endif
+#ifdef _NORMALMAP_TANGENT_SPACE3
+#define _NORMALMAP_TANGENT_SPACE_IDX
+#endif
+#ifdef _DETAIL_MAP3
+#define _DETAIL_MAP_IDX
+#endif
+#ifdef _MASKMAP3
+#define _MASKMAP_IDX
+#endif
+#ifdef _SPECULAROCCLUSIONMAP3
+#define _SPECULAROCCLUSIONMAP_IDX
+#endif
+#undef _NORMALMAP_IDX 
+#undef _NORMALMAP_TANGENT_SPACE_IDX 
+#undef _DETAIL_MAP_IDX 
+#undef _MASKMAP_IDX 
+#undef _SPECULAROCCLUSIONMAP_IDX 
 
 float3 BlendLayeredVector3(float3 x0, float3 x1, float3 x2, float3 x3, float weight[4])
 {
 {
     ZERO_INITIALIZE(LayerTexCoord, layerTexCoord);
 
-#if defined(_LAYER_MAPPING_TRIPLANAR_BLENDMASK) || defined(_LAYER_MAPPING_TRIPLANAR_0) || defined(_LAYER_MAPPING_TRIPLANAR_1) || defined(_LAYER_MAPPING_TRIPLANAR_2) || defined(_LAYER_MAPPING_TRIPLANAR_3)
+#if defined(_LAYER_MAPPING_TRIPLANAR_BLENDMASK) || defined(_LAYER_MAPPING_TRIPLANAR0) || defined(_LAYER_MAPPING_TRIPLANAR1) || defined(_LAYER_MAPPING_TRIPLANAR2) || defined(_LAYER_MAPPING_TRIPLANAR3)
     // one weight for each direction XYZ - Use vertex normal for triplanar
     layerTexCoord.triplanarWeights = ComputeTriplanarWeights(normalWS);
 #endif
 #endif  
 
     isTriplanar = false;
-#ifdef _LAYER_MAPPING_TRIPLANAR_0
+#ifdef _LAYER_MAPPING_TRIPLANAR0
     isTriplanar = true;
 #endif
 
                             );
 
     isTriplanar = false;
-#ifdef _LAYER_MAPPING_TRIPLANAR_1
+#ifdef _LAYER_MAPPING_TRIPLANAR1
     isTriplanar = true;
 #endif
     ComputeLayerTexCoord1(  texCoord0, texCoord1, texCoord2, texCoord3, 
-#ifdef _LAYER_MAPPING_TRIPLANAR_2
+#ifdef _LAYER_MAPPING_TRIPLANAR2
     isTriplanar = true;
 #endif
     ComputeLayerTexCoord2(  texCoord0, texCoord1, texCoord2, texCoord3, 
-#ifdef _LAYER_MAPPING_TRIPLANAR_3
+#ifdef _LAYER_MAPPING_TRIPLANAR3
     isTriplanar = true;
 #endif
     ComputeLayerTexCoord3(  texCoord0, texCoord1, texCoord2, texCoord3, 
 #if defined(_HEIGHTMAP0)
     if (layerTexCoord.base0.isTriplanar)
     {
-        minUvSize = min(layerTexCoord.base0.uvYZ * _HeightMap0_TexelSize.zw, minUvSize);
-        minUvSize = min(layerTexCoord.base0.uvZX * _HeightMap0_TexelSize.zw, minUvSize);
+        minUvSize = min(layerTexCoord.base0.uvZY * _HeightMap0_TexelSize.zw, minUvSize);
+        minUvSize = min(layerTexCoord.base0.uvXZ * _HeightMap0_TexelSize.zw, minUvSize);
         minUvSize = min(layerTexCoord.base0.uvXY * _HeightMap0_TexelSize.zw, minUvSize);
     }
     else
 #if defined(_HEIGHTMAP1)
     if (layerTexCoord.base1.isTriplanar)
     {
-        minUvSize = min(layerTexCoord.base1.uvYZ * _HeightMap1_TexelSize.zw, minUvSize);
-        minUvSize = min(layerTexCoord.base1.uvZX * _HeightMap1_TexelSize.zw, minUvSize);
+        minUvSize = min(layerTexCoord.base1.uvZY * _HeightMap1_TexelSize.zw, minUvSize);
+        minUvSize = min(layerTexCoord.base1.uvXZ * _HeightMap1_TexelSize.zw, minUvSize);
         minUvSize = min(layerTexCoord.base1.uvXY * _HeightMap1_TexelSize.zw, minUvSize);
     }
     else
 #if defined(_HEIGHTMAP2)
     if (layerTexCoord.base2.isTriplanar)
     {
-        minUvSize = min(layerTexCoord.base2.uvYZ * _HeightMap2_TexelSize.zw, minUvSize);
-        minUvSize = min(layerTexCoord.base2.uvZX * _HeightMap2_TexelSize.zw, minUvSize);
+        minUvSize = min(layerTexCoord.base2.uvZY * _HeightMap2_TexelSize.zw, minUvSize);
+        minUvSize = min(layerTexCoord.base2.uvXZ * _HeightMap2_TexelSize.zw, minUvSize);
         minUvSize = min(layerTexCoord.base2.uvXY * _HeightMap2_TexelSize.zw, minUvSize);
     }
     else
 #if defined(_HEIGHTMAP3)
     if (layerTexCoord.base3.isTriplanar)
     {
-        minUvSize = min(layerTexCoord.base3.uvYZ * _HeightMap3_TexelSize.zw, minUvSize);
-        minUvSize = min(layerTexCoord.base3.uvZX * _HeightMap3_TexelSize.zw, minUvSize);
+        minUvSize = min(layerTexCoord.base3.uvZY * _HeightMap3_TexelSize.zw, minUvSize);
+        minUvSize = min(layerTexCoord.base3.uvXZ * _HeightMap3_TexelSize.zw, minUvSize);
         minUvSize = min(layerTexCoord.base3.uvXY * _HeightMap3_TexelSize.zw, minUvSize);
     }
     else
             // apply the 3 offset on all layers
             /*
 
-            ppdParam.uv[0] = layerTexCoord.base0.uvYZ;
+            ppdParam.uv[0] = layerTexCoord.base0.uvZY;
             ppdParam.uv[1] = layerTexCoord.base1.uvYZ;
             ppdParam.uv[2] = layerTexCoord.base2.uvYZ;
             ppdParam.uv[3] = layerTexCoord.base3.uvYZ;
             ParallaxOcclusionMapping(lod, _PPDLodThreshold, numSteps, viewDirTS, maxHeight, ppdParam);
 
-            // Apply to all uvYZ
+            // Apply to all uvZY
-            // Repeat for uvZX
+            // Repeat for uvXZ
 
             // Repeat for uvXY
 

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/LitDataInternal.hlsl

                     ADD_IDX(_UVMappingMask).z * texCoord2 +
                     ADD_IDX(_UVMappingMask).w * texCoord3;
 
+    // Only used with layered, allow to have additional tiling
     uvBase *= additionalTiling.xx;
                     
 
                         ADD_IDX(_UVDetailsMappingMask).w * texCoord3;
 
-    // Note that if base is planar/triplanar, detail map is too
+    // If base is planar/triplanar then detail map is forced to be planar/triplanar
+    ADD_IDX(layerTexCoord.base).isPlanar = isPlanar;
+    ADD_IDX(layerTexCoord.base).isTriplanar = isTriplanar;
+    ADD_IDX(layerTexCoord.details).isPlanar = isPlanar;
+    ADD_IDX(layerTexCoord.details).isTriplanar = isTriplanar;
-    // planar
-    // TODO: Do we want to manage local or world triplanar/planar ? In this case update ApplyPerPixelDisplacement() too
-    //float3 position = localTriplanar ? TransformWorldToObject(positionWS) : positionWS;
-    float3 position = positionWS;
-    position *= worldScale;
+    // TODO: Currently we only handle world planar/triplanar but we may want local planar/triplanar.
+    // In this case both position and normal need to be convert to object space.
+    // planar/triplanar
+    float2 uvXZ;
+    float2 uvXY;
+    float2 uvZY;
+    GetTriplanarCoordinate(positionWS * worldScale, vertexNormalWS, uvXZ, uvXY, uvZY);
+ 
-        uvBase = -position.xz;
-        uvDetails = -position.xz;
-        ADD_IDX(layerTexCoord.base).isPlanar = true;
-        ADD_IDX(layerTexCoord.details).isPlanar = true;
-    }
-    else
-    {
-        ADD_IDX(layerTexCoord.base).isPlanar = false;
-        ADD_IDX(layerTexCoord.details).isPlanar = false;
+        uvBase = uvDetails = uvXZ;
+    // Apply tiling options
-    // triplanar
-    ADD_IDX(layerTexCoord.base).isTriplanar = isTriplanar;
-
-    float3 direction = sign(vertexNormalWS);
-
-    // In triplanar, if we are facing away from the world axis, a different axis will be flipped for each direction.
-    // This is particularly problematic for tangent space normal maps which need to be in the right direction.
-    // So we multiplying the offending coordinate by the sign of the normal.
-    float2 uvYZ = float2(direction.x * position.z, position.y);
-    float2 uvZX = -float2(position.x, direction.y * position.z);
-    float2 uvXY = float2(-position.x, direction.z * position.y);
-
-    ADD_IDX(layerTexCoord.base).uvYZ = TRANSFORM_TEX(uvYZ, ADD_IDX(_BaseColorMap));
-    ADD_IDX(layerTexCoord.base).uvZX = TRANSFORM_TEX(uvZX, ADD_IDX(_BaseColorMap));
+    ADD_IDX(layerTexCoord.base).uvXZ = TRANSFORM_TEX(uvXZ, ADD_IDX(_BaseColorMap));
+    ADD_IDX(layerTexCoord.base).uvZY = TRANSFORM_TEX(uvZY, ADD_IDX(_BaseColorMap));        
-    ADD_IDX(layerTexCoord.details).isTriplanar = isTriplanar;
-
-    ADD_IDX(layerTexCoord.details).uvYZ = TRANSFORM_TEX(uvYZ, ADD_IDX(_DetailMap));
-    ADD_IDX(layerTexCoord.details).uvZX = TRANSFORM_TEX(uvZX, ADD_IDX(_DetailMap));
+    ADD_IDX(layerTexCoord.details).uvXZ = TRANSFORM_TEX(uvXZ, ADD_IDX(_DetailMap));
+    ADD_IDX(layerTexCoord.details).uvZY = TRANSFORM_TEX(uvZY, ADD_IDX(_DetailMap));
 }
 
 float3 ADD_IDX(GetNormalTS)(FragInputs input, LayerTexCoord layerTexCoord, float3 detailNormalTS, float detailMask, bool useBias, float bias)
-    #ifdef _NORMALMAP
-        #ifdef _NORMALMAP_TANGENT_SPACE
-            if (useBias)
-            {
-                normalTS = SAMPLE_LAYER_NORMALMAP_BIAS(ADD_IDX(_NormalMap), ADD_ZERO_IDX(sampler_NormalMap), ADD_IDX(layerTexCoord.base), ADD_IDX(_NormalScale), bias);
-            }
-            else
-            {
-                normalTS = SAMPLE_LAYER_NORMALMAP(ADD_IDX(_NormalMap), ADD_ZERO_IDX(sampler_NormalMap), ADD_IDX(layerTexCoord.base), ADD_IDX(_NormalScale));
-            }            
-        #else // Object space
-            // to be able to combine object space normal with detail map we transform it to tangent space (object space normal composition is not simple).
-            // then later we will re-transform it to world space.
-            if (useBias)
-            {
-                float3 normalOS = SAMPLE_LAYER_NORMALMAP_RGB_BIAS(ADD_IDX(_NormalMap), ADD_ZERO_IDX(sampler_NormalMap), ADD_IDX(layerTexCoord.base), ADD_IDX(_NormalScale), bias).rgb;
-                normalTS = TransformObjectToTangent(normalOS, input.tangentToWorld);
-            }
-            else
-            {
-                float3 normalOS = SAMPLE_LAYER_NORMALMAP_RGB(ADD_IDX(_NormalMap), ADD_ZERO_IDX(sampler_NormalMap), ADD_IDX(layerTexCoord.base), ADD_IDX(_NormalScale)).rgb;
-                normalTS = TransformObjectToTangent(normalOS, input.tangentToWorld);
-            }
-        #endif
+#ifdef _NORMALMAP_IDX
+    #ifdef _NORMALMAP_TANGENT_SPACE_IDX
+    if (useBias)
+    {
+        normalTS = SAMPLE_LAYER_NORMALMAP_BIAS(ADD_IDX(_NormalMap), ADD_ZERO_IDX(sampler_NormalMap), ADD_IDX(layerTexCoord.base), ADD_IDX(_NormalScale), bias);
+    }
+    else
+    {
+        normalTS = SAMPLE_LAYER_NORMALMAP(ADD_IDX(_NormalMap), ADD_ZERO_IDX(sampler_NormalMap), ADD_IDX(layerTexCoord.base), ADD_IDX(_NormalScale));
+    }            
+    #else // Object space
+    // to be able to combine object space normal with detail map we transform it to tangent space (object space normal composition is complex operation).
+    // then later we will re-transform it to world space.
+    if (useBias)
+    {
+        float3 normalOS = SAMPLE_LAYER_NORMALMAP_RGB_BIAS(ADD_IDX(_NormalMap), ADD_ZERO_IDX(sampler_NormalMap), ADD_IDX(layerTexCoord.base), ADD_IDX(_NormalScale), bias).rgb;
+        normalTS = TransformObjectToTangent(normalOS, input.tangentToWorld);
+    }
+    else
+    {
+        float3 normalOS = SAMPLE_LAYER_NORMALMAP_RGB(ADD_IDX(_NormalMap), ADD_ZERO_IDX(sampler_NormalMap), ADD_IDX(layerTexCoord.base), ADD_IDX(_NormalScale)).rgb;
+        normalTS = TransformObjectToTangent(normalOS, input.tangentToWorld);
+    }
+    #endif
-        #ifdef _DETAIL_MAP
-            normalTS = lerp(normalTS, BlendNormalRNM(normalTS, detailNormalTS), detailMask);
-        #endif
-    #else
-        normalTS = float3(0.0, 0.0, 1.0);
+    #ifdef _DETAIL_MAP_IDX
+    normalTS = lerp(normalTS, BlendNormalRNM(normalTS, detailNormalTS), detailMask);
+#else
+    normalTS = float3(0.0, 0.0, 1.0);
+#endif
-    #if defined(_DOUBLESIDED_LIGHTING_FLIP) || defined(_DOUBLESIDED_LIGHTING_MIRROR)
-        #ifdef _DOUBLESIDED_LIGHTING_FLIP
-            float3 oppositeNormalTS = -normalTS;
-        #else
-            // Mirror the normal with the plane define by vertex normal
-            float3 oppositeNormalTS = reflect(normalTS, float3(0.0, 0.0, 1.0)); // Reflect around vertex normal (in tangent space this is z)
-        #endif
-        // TODO : Test if GetOddNegativeScale() is necessary here in case of normal map, as GetOddNegativeScale is take into account in CreateTangentToWorld();
-        normalTS = input.isFrontFace ?
-                        (GetOddNegativeScale() >= 0.0 ? normalTS : oppositeNormalTS) :
-                        (-GetOddNegativeScale() >= 0.0 ? normalTS : oppositeNormalTS);
+#if defined(_DOUBLESIDED_LIGHTING_FLIP) || defined(_DOUBLESIDED_LIGHTING_MIRROR)
+    #ifdef _DOUBLESIDED_LIGHTING_FLIP
+    float3 oppositeNormalTS = -normalTS;
+    #else
+    // Mirror the normal with the plane define by vertex normal
+    float3 oppositeNormalTS = reflect(normalTS, float3(0.0, 0.0, 1.0)); // Reflect around vertex normal (in tangent space this is z)
+    // TODO : Test if GetOddNegativeScale() is necessary here in case of normal map, as GetOddNegativeScale is take into account in CreateTangentToWorld();
+    normalTS = input.isFrontFace ?
+                    (GetOddNegativeScale() >= 0.0 ? normalTS : oppositeNormalTS) :
+                    (-GetOddNegativeScale() >= 0.0 ? normalTS : oppositeNormalTS);
+#endif
 
     return normalTS;
 }
 {
-#ifdef _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A
-    float alpha = ADD_IDX(_BaseColor).a;
-#else
-#endif
 
     // Perform alha test very early to save performance (a killed pixel will not sample textures)
 #if defined(_ALPHATEST_ON) && !defined(LAYERED_LIT_SHADER)
     float3 detailNormalTS = float3(0.0, 0.0, 0.0);
     float detailMask = 0.0;
-#ifdef _DETAIL_MAP
+#ifdef _DETAIL_MAP_IDX
-    #ifdef _DETAIL_MAP_WITH_NORMAL
-    //float detailAO = 0.0;
-    #else
-    // TODO: Use heightmap as a derivative with Morten Mikklesen approach, how this work with our abstraction and triplanar ?
-    detailNormalTS = float3(0.0, 0.0, 1.0);
-    //float detailAO = detail.b;
-    #endif
-#ifdef _DETAIL_MAP
+#ifdef _DETAIL_MAP_IDX
-#ifdef _SPECULAROCCLUSIONMAP
+#ifdef _SPECULAROCCLUSIONMAP_IDX
     // TODO: Do something. For now just take alpha channel
     surfaceData.specularOcclusion = SAMPLE_LAYER_TEXTURE2D(ADD_IDX(_SpecularOcclusionMap), ADD_ZERO_IDX(sampler_SpecularOcclusionMap), ADD_IDX(layerTexCoord.base)).a;
 #else
-    surfaceData.normalWS = float3(0.0, 0.0, 0.0); // Need to init this so that the compiler leaves us alone.
+    surfaceData.normalWS = float3(0.0, 0.0, 0.0); // Need to init this to keep quiet the compiler, but this is overriden later (0, 0, 0) so if we forget to override the compiler may comply.
-#ifdef _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A
-    surfaceData.perceptualSmoothness = SAMPLE_LAYER_TEXTURE2D(ADD_IDX(_BaseColorMap), ADD_ZERO_IDX(sampler_BaseColorMap), ADD_IDX(layerTexCoord.base)).a;
-#elif defined(_MASKMAP)
+#if defined(_MASKMAP_IDX)
-#ifdef _DETAIL_MAP
+#ifdef _DETAIL_MAP_IDX
-    // MaskMap is Metallic, Ambient Occlusion, (Optional) - emissive Mask, Optional - Smoothness (in alpha)
-#ifdef _MASKMAP
+    // MaskMap is RGBA: Metallic, Ambient Occlusion (Optional), emissive Mask (Optional), Smoothness
+#ifdef _MASKMAP_IDX
     surfaceData.metallic = SAMPLE_LAYER_TEXTURE2D(ADD_IDX(_MaskMap), ADD_ZERO_IDX(sampler_MaskMap), ADD_IDX(layerTexCoord.base)).r;
     surfaceData.ambientOcclusion = SAMPLE_LAYER_TEXTURE2D(ADD_IDX(_MaskMap), ADD_ZERO_IDX(sampler_MaskMap), ADD_IDX(layerTexCoord.base)).g;
 #else
 
     // TODO: think about using BC5
 #ifdef _TANGENTMAP
-#ifdef _NORMALMAP_TANGENT_SPACE // Normal and tangent use same space
+#ifdef _NORMALMAP_TANGENT_SPACE_IDX // Normal and tangent use same space
     float3 tangentTS = SAMPLE_LAYER_NORMALMAP(ADD_IDX(_TangentMap), ADD_ZERO_IDX(sampler_TangentMap), ADD_IDX(layerTexCoord.base), 1.0);
     surfaceData.tangentWS = TransformTangentToWorld(tangentTS, input.tangentToWorld);
 #else // Object space
     surfaceData.specular = 0.04;
 
     surfaceData.subsurfaceProfile = _SubsurfaceProfile;
-#ifdef _Subsurface_RADIUS_MAP
-	surfaceData.subsurfaceProfile = SAMPLE_LAYER_TEXTURE2D(ADD_IDX(_SubsurfaceRadiusMap), ADD_ZERO_IDX(sampler_SubsurfaceRadiusMap), ADD_IDX(layerTexCoord.base)).r;
+#ifdef _SUBSURFACE_RADIUS_MAP
+	surfaceData.subsurfaceRadius = SAMPLE_LAYER_TEXTURE2D(ADD_IDX(_SubsurfaceRadiusMap), ADD_ZERO_IDX(sampler_SubsurfaceRadiusMap), ADD_IDX(layerTexCoord.base)).r * _SubsurfaceRadius;
+    surfaceData.subsurfaceProfile = 0;
+
 #ifdef _THICKNESS_MAP
 	surfaceData.thickness = SAMPLE_LAYER_TEXTURE2D(ADD_IDX(_ThicknessMap), ADD_ZERO_IDX(sampler_ThicknessMap), ADD_IDX(layerTexCoord.base)).r;
 #else

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/LitProperties.hlsl

 float _DetailAlbedoScale;
 float _DetailNormalScale;
 float _DetailSmoothnessScale;
-float _DetailHeightScale;
-float _DetailAOScale;
 
 TEXTURE2D(_HeightMap);
 SAMPLER2D(sampler_HeightMap);
 PROP_DECL(float, _DetailAlbedoScale);
 PROP_DECL(float, _DetailNormalScale);
 PROP_DECL(float, _DetailSmoothnessScale);
-PROP_DECL(float, _DetailHeightScale);
-PROP_DECL(float, _DetailAOScale);
 
 PROP_DECL(float, _HeightAmplitude);
 PROP_DECL(float, _HeightCenter);

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/LitTessellation.shader

         _HeightAmplitude("Height Amplitude", Float) = 0.01 // In world units
         _HeightCenter("Height Center", Float) = 0.5 // In texture space
 
-        _TangentMap("TangentMap", 2D) = "bump" {}
-        _Anisotropy("Anisotropy", Range(0.0, 1.0)) = 0
-        _AnisotropyMap("AnisotropyMap", 2D) = "white" {}
-
-        _DetailHeightScale("_DetailHeightScale", Range(-2.0, 2.0)) = 1
-        _DetailAOScale("_DetailAOScale", Range(-2.0, 2.0)) = 1
+
+        _TangentMap("TangentMap", 2D) = "bump" {}
+        _Anisotropy("Anisotropy", Range(0.0, 1.0)) = 0
+        _AnisotropyMap("AnisotropyMap", 2D) = "white" {}
-        _SubsurfaceRadius("Subsurface Radius", Range(0.004, 1.0)) = 0.5
+        _SubsurfaceRadius("Subsurface Radius", Range(0.004, 1.0)) = 1.0
         _SubsurfaceRadiusMap("Subsurface Radius Map", 2D) = "white" {}
         _Thickness("Thickness", Range(0.004, 1.0)) = 0.5
         _ThicknessMap("Thickness Map", 2D) = "white" {}
 
         [Enum(None, 0, DoubleSided, 1, DoubleSidedLigthingFlip, 2, DoubleSidedLigthingMirror, 3)] _DoubleSidedMode("Double sided mode", Float) = 0
 
-        [Enum(Mask Alpha, 0, BaseColor Alpha, 1)] _SmoothnessTextureChannel("Smoothness texture channel", Float) = 1
         [Enum(UV0, 0, Planar, 1, TriPlanar, 2)] _UVBase("UV Set for base", Float) = 0
         _TexWorldScale("Scale to apply on world coordinate", Float) = 1.0
         [HideInInspector] _UVMappingMask("_UVMappingMask", Color) = (1, 0, 0, 0)
         _PPDMinSamples("Min sample for POM", Range(1.0, 64.0)) = 5
         _PPDMaxSamples("Max sample for POM", Range(1.0, 64.0)) = 15
         _PPDLodThreshold("Start lod to fade out the POM effect", Range(0.0, 16.0)) = 5
-        [Enum(DetailMapNormal, 0, DetailMapAOHeight, 1)] _DetailMapMode("DetailMap mode", Float) = 0
         [Enum(UV0, 0, UV1, 1, UV2, 2, UV3, 3)] _UVDetail("UV Set for detail", Float) = 0
         [HideInInspector] _UVDetailsMappingMask("_UVDetailsMappingMask", Color) = (1, 0, 0, 0)
         [Enum(Use Emissive Color, 0, Use Emissive Mask, 1)] _EmissiveColorMode("Emissive color mode", Float) = 1
     #pragma shader_feature _ _TESSELLATION_DISPLACEMENT _TESSELLATION_DISPLACEMENT_PHONG
     #pragma shader_feature _TESSELLATION_OBJECT_SCALE
 
-    #pragma shader_feature _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A
-    #pragma shader_feature _DETAIL_MAP_WITH_NORMAL
-    #pragma shader_feature _NORMALMAP
+    #pragma shader_feature _NORMALMAP  
     #pragma shader_feature _MASKMAP
     #pragma shader_feature _SPECULAROCCLUSIONMAP
     #pragma shader_feature _EMISSIVE_COLOR_MAP
             HLSLPROGRAM
 
             // Lightmap memo
-            // DYNAMICLIGHTMAP_ON is used when we have an "enlighten lightmap" ie a lightmap updated at runtime by enlighten.This lightmap contain indirect lighting from realtime lights and realtime emissive material.Offline baked lighting(from baked material / light,
+            // DYNAMICLIGHTMAP_ON is used when we have an "enlighten lightmap" ie a lightmap updated at runtime by enlighten.This lightmap contain indirect lighting from realtime lights and realtime emissive material.Offline baked lighting(from baked material / light, 
             // both direct and indirect lighting) will hand up in the "regular" lightmap->LIGHTMAP_ON.
 
             // No tessellation for Meta pass
             #include "../../Lighting/Forward.hlsl"
             #include "HDRenderPipeline/Debug/HDRenderPipelineDebug.cs.hlsl"
             #include "HDRenderPipeline/Debug/DebugLighting.hlsl"
+
             // TEMP until pragma work in include
             #pragma multi_compile LIGHTLOOP_SINGLE_PASS LIGHTLOOP_TILE_PASS
 
             #include "../../ShaderPass/ShaderPassForward.hlsl"
 
-                ENDHLSL
+            ENDHLSL
+
     }
 
     CustomEditor "Experimental.Rendering.HDPipeline.LitGUI"

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/SampleLayer.hlsl

     bool isPlanar; // mutually exclusive with isTriplanar
     // triplanar
     bool isTriplanar;
-    float2 uvYZ;
-    float2 uvZX;
+    float2 uvZY;
+    float2 uvXZ;
     float2 uvXY;
 };
 

Assets/ScriptableRenderPipeline/HDRenderPipeline/Material/SampleLayerInternal.hlsl

         float4 val = float4(0.0, 0.0, 0.0, 0.0);
 
         if (triplanarWeights.x > 0.0)
-            val += triplanarWeights.x * SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvYZ, param);
+            val += triplanarWeights.x * SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvZY, param);
-            val += triplanarWeights.y * SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvZX, param);
+            val += triplanarWeights.y * SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvXZ, param);
         if (triplanarWeights.z > 0.0)
             val += triplanarWeights.z * SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvXY, param);
 
         float3 val = float3(0.0, 0.0, 0.0);
 
         if (triplanarWeights.x > 0.0)
-            val += triplanarWeights.x * UnpackNormalAG(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvYZ, param), scale);
+            val += triplanarWeights.x * UnpackNormalAG(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvZY, param), scale);
-            val += triplanarWeights.y * UnpackNormalAG(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvZX, param), scale);
+            val += triplanarWeights.y * UnpackNormalAG(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvXZ, param), scale);
         if (triplanarWeights.z > 0.0)
             val += triplanarWeights.z * UnpackNormalAG(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvXY, param), scale);
 
         float3 val = float3(0.0, 0.0, 0.0);
 
         if (triplanarWeights.x > 0.0)
-            val += triplanarWeights.x * UnpackNormalAG(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvYZ, param), scale);
+            val += triplanarWeights.x * UnpackNormalAG(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvZY, param), scale);
-            val += triplanarWeights.y * UnpackNormalAG(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvZX, param), scale);
+            val += triplanarWeights.y * UnpackNormalAG(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvXZ, param), scale);
         if (triplanarWeights.z > 0.0)
             val += triplanarWeights.z * UnpackNormalAG(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvXY, param), scale);
 
         float3 val = float3(0.0, 0.0, 0.0);
 
         if (triplanarWeights.x > 0.0)
-            val += triplanarWeights.x * UnpackNormalRGB(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvYZ, param), scale);
+            val += triplanarWeights.x * UnpackNormalRGB(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvZY, param), scale);
-            val += triplanarWeights.y * UnpackNormalRGB(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvZX, param), scale);
+            val += triplanarWeights.y * UnpackNormalRGB(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvXZ, param), scale);
         if (triplanarWeights.z > 0.0)
             val += triplanarWeights.z * UnpackNormalRGB(SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV.uvXY, param), scale);
 

Assets/ScriptableRenderPipeline/ShaderLibrary/CommonMaterial.hlsl

     return blendWeights;
 }
 
+// Planar/Triplanar convention for Unity
+// position and vertex normal must be in the same space
+void GetTriplanarCoordinate(float3 position, float3 vertexNormal, out float2 uvXZ, out float2 uvXY, out float2 uvZY)
+{
+    float3 direction = sign(vertexNormal);
+
+    // In triplanar, if we are facing away from the world axis, a different axis will be flipped for each direction.
+    // This is particularly problematic for tangent space normal maps which need to be in the right direction.
+    // So we multiplying the offending coordinate by the sign of the normal.
+    uvXZ = -float2(position.x, direction.y * position.z);
+    uvXY = float2(-position.x, direction.z * position.y);
+    uvZY = float2(direction.x * position.z, position.y);
+}
+
 float LerpWhiteTo(float b, float t)
 {
     float oneMinusT = 1.0 - t;

Assets/TestScenes/HDTest/GraphicTest/Tessellation/Material/Tessellation - Rock.mat

   m_Name: Tessellation - Rock
   m_Shader: {fileID: 4800000, guid: 756bac9090102564582875f4c7e30202, type: 3}
   m_ShaderKeywords: _ALPHACUTOFFENABLE_OFF _DEPTHOFFSETENABLE_OFF _DETAIL_MAP_WITH_NORMAL
-    _DISTORTIONDEPTHTEST_OFF _DISTORTIONENABLE_OFF _DISTORTIONONLY_OFF _ENABLEPERPIXELDISPLACEMENT_OFF
-    _HEIGHTMAP _NORMALMAP _NORMALMAP_TANGENT_SPACE _TESSELLATIONOBJECTSCALE_OFF _TESSELLATION_DISPLACEMENT
+    _DISTORTIONDEPTHTEST_OFF _DISTORTIONENABLE_OFF _DISTORTIONONLY_OFF _EMISSIVE_COLOR
+    _ENABLEPERPIXELDISPLACEMENT_OFF _HEIGHTMAP _NORMALMAP _NORMALMAP_TANGENT_SPACE
+    _TESSELLATIONOBJECTSCALE_OFF _TESSELLATION_DISPLACEMENT
   m_LightmapFlags: 4
   m_EnableInstancingVariants: 0
   m_CustomRenderQueue: -1
         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
         m_Offset: {x: 0, y: 0}
+    - _SubsurfaceRadiusMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _ThicknessMap:
         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
         m_Offset: {x: 0, y: 0}
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Assets/TestScenes/HDTest/LayeredLitTest/Material/Layered_BlendColor.mat

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Assets/TestScenes/HDTest/LayeredLitTest/Material/Layered_BlendMask.mat

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Assets/TestScenes/HDTest/LayeredLitTest/Material/Layered_HeightBased.mat

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Assets/TestScenes/HDTest/LayeredLitTest/Material/Layered_Layer0_Planar.mat

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Assets/TestScenes/HDTest/LayeredLitTest/Material/Layered_Layer0_Triplanar.mat

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