Merge pull request #314 from Unity-Technologies/Move-matId-Specular-in-Standard

Update materialId management in Lit (Optimization + one slot saved)

Assets/ScriptableRenderPipeline/Core/Shadow/ShadowBase.cs.hlsl

 //
-// This file was automatically generated from Assets/ScriptableRenderPipeline/Core/Shadow/ShadowBase.cs.  Please don't edit by hand.
+// This file was automatically generated from Assets/ScriptableRenderPipeline/core/Shadow/ShadowBase.cs.  Please don't edit by hand.
 //
 
 #ifndef SHADOWBASE_CS_HLSL

Assets/ScriptableRenderPipeline/Fptl/LightDefinitions.cs.hlsl

 //
-// This file was automatically generated from Assets/ScriptableRenderPipeline/Fptl/LightDefinitions.cs.  Please don't edit by hand.
+// This file was automatically generated from Assets/ScriptableRenderPipeline/fptl/LightDefinitions.cs.  Please don't edit by hand.
 //
 
 #ifndef LIGHTDEFINITIONS_CS_HLSL

Assets/ScriptableRenderPipeline/HDRenderPipeline/Lighting/TilePass/FeatureFlags.hlsl

 
 static const uint FeatureVariantFlags[NUM_FEATURE_VARIANTS] =
 {
-/*  0 */ 0 | MATERIALFEATUREFLAGS_MASK,
+/*  0 */ 0 | MATERIALFEATUREFLAGS_MASK, // TODO: ask Runes if this is really needed ? In case of material only, it mean debug and we don't care about performance
 /*  1 */ LIGHTFEATUREFLAGS_SKY | LIGHTFEATUREFLAGS_DIRECTIONAL | MATERIALFEATUREFLAGS_LIT_STANDARD,
 /*  2 */ LIGHTFEATUREFLAGS_SKY | LIGHTFEATUREFLAGS_DIRECTIONAL | LIGHTFEATUREFLAGS_ENV | MATERIALFEATUREFLAGS_LIT_STANDARD,
 /*  3 */ LIGHTFEATUREFLAGS_SKY | LIGHTFEATUREFLAGS_DIRECTIONAL | LIGHTFEATUREFLAGS_PUNCTUAL | MATERIALFEATUREFLAGS_LIT_STANDARD,

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

             m_MaterialEditor.TexturePropertySingleLine(Styles.thicknessMapText, thicknessMap);
         }
 
-        protected void ShaderStandardInputGUI()
+        protected void ShaderAnisoInputGUI()
         {
             if ((NormalMapSpace)normalMapSpace.floatValue == NormalMapSpace.TangentSpace)
             {
 
             m_MaterialEditor.TexturePropertySingleLine(Styles.baseColorText, baseColorMap, baseColor);
 
-            if ((Lit.MaterialId)materialID.floatValue == Lit.MaterialId.LitStandard)
+            if ((Lit.MaterialId)materialID.floatValue == Lit.MaterialId.LitStandard || (Lit.MaterialId)materialID.floatValue == Lit.MaterialId.LitAniso)
             {
                 m_MaterialEditor.ShaderProperty(metallic, Styles.metallicText);
             }
                     ShaderSSSInputGUI(material);
                     break;
                 case Lit.MaterialId.LitStandard:
-                    ShaderStandardInputGUI();
+                    // Nothing
+                    break;
+                case Lit.MaterialId.LitAniso:
+                    ShaderAnisoInputGUI();
                     break;
                 case Lit.MaterialId.LitSpecular:
                     m_MaterialEditor.TexturePropertySingleLine(Styles.specularColorText, specularColorMap, specularColor);
                 material.DisableKeyword("_REQUIRE_UV2");
                 material.DisableKeyword("_REQUIRE_UV3");
             }
+
+            Lit.MaterialId materialId = (Lit.MaterialId)material.GetFloat(kMaterialID);
+
+            SetKeyword(material, "_MATID_SSS", materialId == Lit.MaterialId.LitSSS);
+            //SetKeyword(material, "_MATID_STANDARD", materialId == Lit.MaterialId.LitStandard); // See comment in Lit.shader, it is the default, we don't define it
+            SetKeyword(material, "_MATID_ANISO", materialId == Lit.MaterialId.LitAniso);
+            SetKeyword(material, "_MATID_SPECULAR", materialId == Lit.MaterialId.LitSpecular);
         }
     }
 } // namespace UnityEditor

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

         {
             LitSSS      = 0,
             LitStandard = 1,
-            LitSpecular = 2,
-            LitUnused   = 3,
-            LitAniso    = 4 // Should be the last as it is not setup by the users but generated based on anisotropy property
+            LitUnused0  = 2,
+            LitUnused1  = 3,
+            LitAniso    = 4, // Should be the last as it is not setup by the users but generated based on anisotropy property
+            LitSpecular = 5, // Should be the last as it is not setup by the users but generated based on anisotropy property and specular
         };
 
         [GenerateHLSL]
             LitStandard = 1 << 13,
-            LitSpecular = 1 << 14,
-            LitAniso    = 1 << 15
+            LitAniso    = 1 << 14,
+            LitSpecular = 1 << 15
+        }
+
+        [GenerateHLSL]
+        public enum SpecularValue
+        {
+            // Value are defined in the tab name convertSpecularToValue in lit.hlsl
+            Water = 0, // 0.02  Water or ice
+            Regular = 1, // 0.04 regular dieletric
+            Gemstone = 2, // 0.20
+            SpecularColor = 3 // Special case: use specular color
         }
 
         //-----------------------------------------------------------------------------
             [SurfaceDataAttributes("Metallic")]
             public float metallic;
             [SurfaceDataAttributes("Specular")]
-            public float specular; // 0.02, 0.04, 0.16, 0.2
+            public SpecularValue specular;
 
             // SSS
             [SurfaceDataAttributes("Subsurface Radius")]

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

 //
 #define MATERIALID_LIT_SSS (0)
 #define MATERIALID_LIT_STANDARD (1)
-#define MATERIALID_LIT_SPECULAR (2)
-#define MATERIALID_LIT_UNUSED (3)
+#define MATERIALID_LIT_UNUSED0 (2)
+#define MATERIALID_LIT_UNUSED1 (3)
+#define MATERIALID_LIT_SPECULAR (5)
 
 //
 // UnityEngine.Experimental.Rendering.HDPipeline.Lit+MaterialFeatureFlags:  static fields
-#define MATERIALFEATUREFLAGS_LIT_SPECULAR (16384)
-#define MATERIALFEATUREFLAGS_LIT_ANISO (32768)
+#define MATERIALFEATUREFLAGS_LIT_ANISO (16384)
+#define MATERIALFEATUREFLAGS_LIT_SPECULAR (32768)
+
+//
+// UnityEngine.Experimental.Rendering.HDPipeline.Lit+SpecularValue:  static fields
+//
+#define SPECULARVALUE_WATER (0)
+#define SPECULARVALUE_REGULAR (1)
+#define SPECULARVALUE_GEMSTONE (2)
+#define SPECULARVALUE_SPECULAR_COLOR (3)
 
 //
 // UnityEngine.Experimental.Rendering.HDPipeline.Lit+SurfaceData:  static fields
     float3 tangentWS;
     float anisotropy;
     float metallic;
-    float specular;
+    int specular;
     float subsurfaceRadius;
     float thickness;
     int subsurfaceProfile;
             result = surfacedata.metallic.xxx;
             break;
         case DEBUGVIEW_LIT_SURFACEDATA_SPECULAR:
-            result = surfacedata.specular.xxx;
+            result = GetIndexColor(surfacedata.specular);
             break;
         case DEBUGVIEW_LIT_SURFACEDATA_SUBSURFACE_RADIUS:
             result = surfacedata.subsurfaceRadius.xxx;

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

 #endif
 }
 
-void FillMaterialIdStandardData(float3 baseColor, float specular, float metallic, float roughness, float3 normalWS, float3 tangentWS, float anisotropy, inout BSDFData bsdfData)
+static const float3 convertSpecularToValue = float3(0.02, 0.04, 0.20);
+
+void FillMaterialIdStandardData(float3 baseColor, int specular, float metallic, inout BSDFData bsdfData)
-    bsdfData.fresnel0 = lerp(float3(specular.xxx), baseColor, metallic);
-
-    // TODO: encode specular
+    float val = convertSpecularToValue[specular];
+    bsdfData.fresnel0 = lerp(val.xxx, baseColor, metallic);
+}
+void FillMaterialIdAnisoData(float roughness, float3 normalWS, float3 tangentWS, float anisotropy, inout BSDFData bsdfData)
+{
     bsdfData.tangentWS = tangentWS;
     bsdfData.bitangentWS = cross(normalWS, tangentWS);
     ConvertAnisotropyToRoughness(roughness, anisotropy, bsdfData.roughnessT, bsdfData.roughnessB);
     bsdfData.roughness = PerceptualRoughnessToRoughness(bsdfData.perceptualRoughness);
     bsdfData.materialId = surfaceData.materialId;
 
+    // IMPORTANT: In case of foward or gbuffer pass we know what we are, we don't need to check specular or aniso to know the materialId, this is because we have static compile shader feature for it
-        FillMaterialIdStandardData(surfaceData.baseColor, surfaceData.specular, surfaceData.metallic, bsdfData.roughness, surfaceData.normalWS, surfaceData.tangentWS, surfaceData.anisotropy, bsdfData);
-        bsdfData.materialId = surfaceData.anisotropy > 0.0 ? MATERIALID_LIT_ANISO : bsdfData.materialId;
-    }
-    else if (bsdfData.materialId == MATERIALID_LIT_SSS)
-    {
-        FillMaterialIdSSSData(surfaceData.baseColor, surfaceData.subsurfaceProfile, surfaceData.subsurfaceRadius, surfaceData.thickness, bsdfData);
+        FillMaterialIdStandardData(surfaceData.baseColor, surfaceData.specular, surfaceData.metallic, bsdfData);
     }
     else if (bsdfData.materialId == MATERIALID_LIT_SPECULAR)
     {
+    else if (bsdfData.materialId == MATERIALID_LIT_ANISO)
+    {
+        FillMaterialIdStandardData(surfaceData.baseColor, surfaceData.specular, surfaceData.metallic, bsdfData);
+        FillMaterialIdAnisoData(bsdfData.roughness, surfaceData.normalWS, surfaceData.tangentWS, surfaceData.anisotropy, bsdfData);
+    }
+    else if (bsdfData.materialId == MATERIALID_LIT_SSS)
+    {
+        FillMaterialIdSSSData(surfaceData.baseColor, surfaceData.subsurfaceProfile, surfaceData.subsurfaceRadius, surfaceData.thickness, bsdfData);
+    }
 
     ApplyDebugToBSDFData(bsdfData);
 
 //-----------------------------------------------------------------------------
 // conversion function for deferred
 //-----------------------------------------------------------------------------
-
-// Tetra encoding 10:10 + 2 seems equivalent to oct 11:11, as oct is cheaper use that. Let here for future testing in reflective scene for comparison
-//#define USE_NORMAL_TETRAHEDRON_ENCODING
 
 // Encode SurfaceData (BSDF parameters) into GBuffer
 // Must be in sync with RT declared in HDRenderPipeline.cs ::Rebuild
     // RT1 - 10:10:10:2
     // We store perceptualRoughness instead of roughness because it save a sqrt ALU when decoding
     // (as we want both perceptualRoughness and roughness for the lighting due to Disney Diffuse model)
-#ifdef USE_NORMAL_TETRAHEDRON_ENCODING
-    // Encode normal on 20bit + 2bit (faceIndex) with tetrahedal compression
-    uint faceIndex;
-    float2 tetraNormalWS = PackNormalTetraEncode(surfaceData.normalWS, faceIndex);
-    // Store faceIndex on two bits with perceptualRoughness
-    outGBuffer1 = float4(tetraNormalWS * 0.5 + 0.5, PackFloatInt10bit(PerceptualSmoothnessToPerceptualRoughness(surfaceData.perceptualSmoothness), faceIndex, 4.0), PackMaterialId(surfaceData.materialId));
-#else
     // Encode normal on 20bit with oct compression + 2bit of sign
     float2 octNormalWS = PackNormalOctEncode(surfaceData.normalWS);
     // To have more precision encode the sign of xy in a separate uint
-#endif
+        // Encode specular on two bit for the enum
+        outGBuffer2 = float4(0.0, 0.0, 0.0, PackFloatInt8bit(surfaceData.metallic, surfaceData.specular, 4.0));
+    }
+    else if (surfaceData.materialId == MATERIALID_LIT_SPECULAR)
+    {
+        outGBuffer1.a = PackMaterialId(MATERIALID_LIT_STANDARD); // We save 1bit in gbuffer1 to store it in gbuffer2 instead
+        // Encode specular on two bit for the enum, must match encoding of MATERIALID_LIT_STANDARD
+        // TODO: encoding here could be optimize as we know what is the value of surfaceData.specular => (0.75294)
+        outGBuffer2 = float4(surfaceData.specularColor, PackFloatInt8bit(0.0, surfaceData.specular, 4.0));
+    }
+    else if (surfaceData.materialId == MATERIALID_LIT_ANISO)
+    {
+        outGBuffer1.a = PackMaterialId(MATERIALID_LIT_STANDARD); // We save 1bit in gbuffer1 and use aniso value instead to detect we are aniso
-        // TODO: store metal and specular together, specular should be an enum (fixed value)
-        outGBuffer2 = float4(octTangentWS * 0.5 + 0.5, surfaceData.anisotropy, surfaceData.metallic);
+        outGBuffer2 = float4(octTangentWS * 0.5 + 0.5, surfaceData.anisotropy, PackFloatInt8bit(surfaceData.metallic, surfaceData.specular, 4.0));
-    }
-    else if (surfaceData.materialId == MATERIALID_LIT_SPECULAR)
-    {
-        outGBuffer2 = float4(surfaceData.specularColor, 0.0);
     }
 
     // Lighting
     float3 baseColor = inGBuffer0.rgb;
     bsdfData.specularOcclusion = inGBuffer0.a;
 
-#ifdef USE_NORMAL_TETRAHEDRON_ENCODING
-    int faceIndex;
-    UnpackFloatInt10bit(inGBuffer1.b, 4.0, bsdfData.perceptualRoughness, faceIndex);
-    bsdfData.normalWS = UnpackNormalTetraEncode(inGBuffer1.xy * 2.0 - 1.0, faceIndex);
-#else
-#endif
-    int supportsStandard = (featureFlags & (MATERIALFEATUREFLAGS_LIT_STANDARD | MATERIALFEATUREFLAGS_LIT_ANISO)) != 0;
+    int supportsStandard = (featureFlags & (MATERIALFEATUREFLAGS_LIT_STANDARD | MATERIALFEATUREFLAGS_LIT_ANISO | MATERIALFEATUREFLAGS_LIT_SPECULAR)) != 0;
-    int supportsSpecular = (featureFlags & (MATERIALFEATUREFLAGS_LIT_SPECULAR)) != 0;
-    if(supportsStandard + supportsSSS + supportsSpecular > 1)
+    if (supportsStandard + supportsSSS > 1)
     {
         bsdfData.materialId = UnpackMaterialId(inGBuffer1.a);   // only fetch materialid if it is not statically known from feature flags
     }
-        if(supportsStandard) bsdfData.materialId = MATERIALID_LIT_STANDARD;
-        else if(supportsSSS) bsdfData.materialId = MATERIALID_LIT_SSS;
-        else bsdfData.materialId = MATERIALID_LIT_SPECULAR;
+        if (supportsStandard)
+            bsdfData.materialId = MATERIALID_LIT_STANDARD;
+        else // if (supportsSSS)
+            bsdfData.materialId = MATERIALID_LIT_SSS;
-        float metallic = inGBuffer2.a;
-        float specular = 0.04; // TODO extract spec
+        float metallic;
+        int specular;
+        UnpackFloatInt8bit(inGBuffer2.a, 4.0, metallic, specular);
-        float3 tangentWS = UnpackNormalOctEncode(float2(inGBuffer2.rg * 2.0 - 1.0));
-        FillMaterialIdStandardData(baseColor, specular, metallic, bsdfData.roughness, bsdfData.normalWS, tangentWS, anisotropy, bsdfData);
-        if ((featureFlags & MATERIALFEATUREFLAGS_LIT_ANISO) && (featureFlags & MATERIALFEATUREFLAGS_LIT_STANDARD) == 0 || anisotropy > 0)
+        if (((featureFlags & MATERIALFEATUREFLAGS_LIT_SPECULAR) && (featureFlags & MATERIALFEATUREFLAGS_LIT_STANDARD) == 0)
+            || specular == SPECULARVALUE_SPECULAR_COLOR)
+        {
+            bsdfData.materialId = MATERIALID_LIT_SPECULAR;
+            bsdfData.diffuseColor = baseColor;
+            bsdfData.fresnel0 = inGBuffer2.rgb;
+        }
+        else if ( ((featureFlags & MATERIALFEATUREFLAGS_LIT_ANISO) && (featureFlags & MATERIALFEATUREFLAGS_LIT_STANDARD) == 0)
+                || anisotropy > 0)
+            FillMaterialIdStandardData(baseColor, specular, metallic, bsdfData);
+            float3 tangentWS = UnpackNormalOctEncode(float2(inGBuffer2.rg * 2.0 - 1.0));
+            FillMaterialIdAnisoData(bsdfData.roughness, bsdfData.normalWS, tangentWS, anisotropy, bsdfData);
+        else
+        {
+            FillMaterialIdStandardData(baseColor, specular, metallic, bsdfData);
+        }
+
-    else if (supportsSSS && bsdfData.materialId == MATERIALID_LIT_SSS)
+    else // if (supportsSSS && bsdfData.materialId == MATERIALID_LIT_SSS)
     {
         float subsurfaceRadius  = inGBuffer2.x;
         float thickness         = inGBuffer2.y;
-    }
-    else if (supportsSpecular && bsdfData.materialId == MATERIALID_LIT_SPECULAR)
-    {
-        bsdfData.diffuseColor = baseColor;
-        bsdfData.fresnel0 = inGBuffer2.rgb;
     }
 
     bakeDiffuseLighting = inGBuffer3.rgb;
 #endif
 
     int materialId = UnpackMaterialId(inGBuffer1.a);
-    float anisotropy = inGBuffer2.b;
-        featureFlags |= (anisotropy > 0) ? MATERIALFEATUREFLAGS_LIT_ANISO : MATERIALFEATUREFLAGS_LIT_STANDARD;
+        float metallic;
+        int specular;
+        UnpackFloatInt8bit(inGBuffer2.a, 4.0, metallic, specular);
+        float anisotropy = inGBuffer2.b;
+
+        if (specular == SPECULARVALUE_SPECULAR_COLOR)
+        {
+            featureFlags |= MATERIALFEATUREFLAGS_LIT_SPECULAR;
+        }
+        else if (anisotropy > 0.0)
+        {
+            featureFlags |= MATERIALFEATUREFLAGS_LIT_ANISO;
+        }
+        else
+        {
+            featureFlags |= MATERIALFEATUREFLAGS_LIT_STANDARD;
+        }
-    else if (materialId == MATERIALID_LIT_SPECULAR)
-    {
-        featureFlags |= MATERIALFEATUREFLAGS_LIT_SPECULAR;
-    }
+
     return featureFlags;
 }
 

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

         [HideInInspector] _UVMappingMask("_UVMappingMask", Color) = (1, 0, 0, 0)
         [Enum(TangentSpace, 0, ObjectSpace, 1)] _NormalMapSpace("NormalMap space", Float) = 0
 
-        [Enum(Subsurface Scattering, 0, Standard, 1, Specular Color, 2)] _MaterialID("MaterialId", Int) = 1 // MaterialId.RegularLighting
+        // Note: 2 and 3 are currently unused
+        [Enum(Subsurface Scattering, 0, Standard, 1, Anisotropy, 4, Specular Color, 5)] _MaterialID("MaterialId", Int) = 1 // MaterialId.RegularLighting
 
         [ToggleOff]  _EnablePerPixelDisplacement("Enable per pixel displacement", Float) = 0.0
         _PPDMinSamples("Min sample for POM", Range(1.0, 64.0)) = 5
     #pragma shader_feature _THICKNESSMAP
     #pragma shader_feature _SPECULARCOLORMAP
     #pragma shader_feature _VERTEX_WIND
+
+    // MaterialId are used as shader feature to allow compiler to optimize properly
+    // Note _MATID_STANDARD is not define as there is always the default case "_". We assign default as _MATID_STANDARD, so we never test _MATID_STANDARD
+    #pragma shader_feature _ _MATID_SSS _MATID_ANISO _MATID_SPECULAR
 
     #pragma multi_compile LIGHTMAP_OFF LIGHTMAP_ON
     #pragma multi_compile DIRLIGHTMAP_OFF DIRLIGHTMAP_COMBINED

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

     // This part of the code is not used in case of layered shader but we keep the same macro system for simplicity
 #if !defined(LAYERED_LIT_SHADER)
 
-    // TODO: In order to let the compiler optimize in case of forward rendering this need to be a variant (shader feature) and not a parameter!
-    surfaceData.materialId = _MaterialID;
+    // Having individual shader features for each materialID like this allow the compiler to optimize
+#ifdef _MATID_SSS
+    surfaceData.materialId = MATERIALID_LIT_SSS;
+#elif defined(_MATID_ANISO)
+    surfaceData.materialId = MATERIALID_LIT_ANISO;
+#elif defined(_MATID_SPECULAR)
+    surfaceData.materialId = MATERIALID_LIT_SPECULAR;
+#else // Default
+    surfaceData.materialId = MATERIALID_LIT_STANDARD;
+#endif
 
 #ifdef _TANGENTMAP
     #ifdef _NORMALMAP_TANGENT_SPACE_IDX // Normal and tangent use same space
 #endif
     surfaceData.anisotropy *= ADD_IDX(_Anisotropy);
 
-    surfaceData.specular = 0.04;
+#ifdef _MATID_SPECULAR
+    // To save 1bit space in GBuffer we don't store specular as materialID but in the enum of the specular value
+    surfaceData.specular = SPECULARVALUE_SPECULAR_COLOR;
+#else
+    surfaceData.specular = SPECULARVALUE_REGULAR;
+#endif
 
     surfaceData.subsurfaceProfile = _SubsurfaceProfile;
     surfaceData.subsurfaceRadius  = _SubsurfaceRadius;

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

 
 float _Anisotropy;
 
-int   _MaterialID;
 int   _SubsurfaceProfile;
 float _SubsurfaceRadius;
 float _Thickness;

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

         [HideInInspector] _UVMappingMask("_UVMappingMask", Color) = (1, 0, 0, 0)
         [Enum(TangentSpace, 0, ObjectSpace, 1)] _NormalMapSpace("NormalMap space", Float) = 0
 
-        [Enum(Subsurface Scattering, 0, Standard, 1, Specular Color, 2)] _MaterialID("MaterialId", Int) = 1 // MaterialId.LitStandard
+        // Note: 2 and 3 are currently unused
+        [Enum(Subsurface Scattering, 0, Standard, 1, Anisotropy, 4, Specular Color, 5)] _MaterialID("MaterialId", Int) = 1 // MaterialId.RegularLighting
 
         [ToggleOff]  _EnablePerPixelDisplacement("Enable per pixel displacement", Float) = 0.0
         _PPDMinSamples("Min sample for POM", Range(1.0, 64.0)) = 5
     #pragma shader_feature _THICKNESSMAP
     #pragma shader_feature _SPECULARCOLORMAP
     #pragma shader_feature _VERTEX_WIND
+
+    // MaterialId are used as shader feature to allow compiler to optimize properly
+    // Note _MATID_STANDARD is not define as there is always the default case "_". We assign default as _MATID_STANDARD, so we never test _MATID_STANDARD
+    #pragma shader_feature _ _MATID_SSS _MATID_ANISO _MATID_SPECULAR
 
     #pragma multi_compile LIGHTMAP_OFF LIGHTMAP_ON
     #pragma multi_compile DIRLIGHTMAP_OFF DIRLIGHTMAP_COMBINED

Assets/ScriptableRenderPipeline/ShaderLibrary/Packing.hlsl

     float t2 = (precision / maxi) / precisionMinusOne;
 
     // extract integer part
-    i = int(val / t2);
+    i = int((val / t2) + rcp(precisionMinusOne)); // + rcp(precisionMinusOne) to deal with precision issue (can't use round() as val contain the floating number
-    f = (-t2 * float(i) + val) / t1;
+    f = saturate((-t2 * float(i) + val) / t1); // Saturate in case of precision issue
-    return PackFloatInt(f, i, maxi, 255.0);
+    return PackFloatInt(f, i, maxi, 256.0);
-    UnpackFloatInt(val, maxi, 255.0, f, i);
+    UnpackFloatInt(val, maxi, 256.0, f, i);
 }
 
 float PackFloatInt10bit(float f, int i, float maxi)

Assets/TestScenes/HDTest/GraphicTest/Common/Dragon/DragonNormalOS.mat

   m_PrefabInternal: {fileID: 0}
   m_Name: DragonNormalOS
   m_Shader: {fileID: 4800000, guid: 6e4ae4064600d784cac1e41a9e6f2e59, type: 3}
-  m_ShaderKeywords: _ALPHACUTOFFENABLE_OFF _DEPTHOFFSETENABLE_OFF _DISTORTIONDEPTHTEST_OFF
-    _DISTORTIONENABLE_OFF _DISTORTIONONLY_OFF _DOUBLESIDEDENABLE_OFF _ENABLEPERPIXELDISPLACEMENT_OFF
-    _ENABLEWIND_OFF _NORMALMAP
+  m_ShaderKeywords: _NORMALMAP
   m_LightmapFlags: 4
   m_EnableInstancingVariants: 0
   m_DoubleSidedGI: 0

Assets/TestScenes/HDTest/GraphicTest/Common/Dragon/DragonNormalTS.mat

   m_PrefabInternal: {fileID: 0}
   m_Name: DragonNormalTS
   m_Shader: {fileID: 4800000, guid: 6e4ae4064600d784cac1e41a9e6f2e59, type: 3}
-  m_ShaderKeywords: _ALPHACUTOFFENABLE_OFF _DEPTHOFFSETENABLE_OFF _DISTORTIONDEPTHTEST_OFF
-    _DISTORTIONENABLE_OFF _DISTORTIONONLY_OFF _DOUBLESIDEDENABLE_OFF _ENABLEPERPIXELDISPLACEMENT_OFF
-    _ENABLEWIND_OFF _NORMALMAP _NORMALMAP_TANGENT_SPACE
+  m_ShaderKeywords: _NORMALMAP _NORMALMAP_TANGENT_SPACE
   m_LightmapFlags: 4
   m_EnableInstancingVariants: 0
   m_DoubleSidedGI: 0

Assets/TestScenes/HDTest/GraphicTest/Common/Dragon/DragonStatue.mat

   m_PrefabInternal: {fileID: 0}
   m_Name: DragonStatue
   m_Shader: {fileID: 4800000, guid: 6e4ae4064600d784cac1e41a9e6f2e59, type: 3}
-  m_ShaderKeywords: _ALPHACUTOFFENABLE_OFF _DEPTHOFFSETENABLE_OFF _DETAIL_MAP_WITH_NORMAL
-    _DISTORTIONDEPTHTEST_OFF _DISTORTIONENABLE_OFF _DISTORTIONONLY_OFF _EMISSION _ENABLEPERPIXELDISPLACEMENT_OFF
-    _HEIGHTMAP _MASKMAP _NORMALMAP _NORMALMAP_TANGENT_SPACE _TESSELLATION_DISPLACEMENT
-    _TESSELLATION_OBJECT_SCALE
+  m_ShaderKeywords: _HEIGHTMAP _MASKMAP _NORMALMAP _NORMALMAP_TANGENT_SPACE
+  m_DoubleSidedGI: 0
   m_CustomRenderQueue: -1
   stringTagMap: {}
   disabledShaderPasses:
         m_Texture: {fileID: 2800000, guid: ad9cb02bddceb1340bc1fcb19d5f35bd, type: 3}
         m_Scale: {x: 1, y: 1}
         m_Offset: {x: 0, y: 0}
+    - _NormalMapOS:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
     - _OcclusionMap:
         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
         m_Offset: {x: 0, y: 0}
+    - _TangentMapOS:
+        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}
     - _DoubleSidedEnable: 0
     - _DoubleSidedMirrorEnable: 1
     - _DoubleSidedMode: 0
+    - _DoubleSidedNormalMode: 1
     - _Drag: 1
     - _DstBlend: 0
     - _EmissiveColorMode: 1

Assets/TestScenes/HDTest/GraphicTest/Common/Dragon/DragonStatueSpecular.mat

   m_PrefabInternal: {fileID: 0}
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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Lit_Blue.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Lit_Green.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Lit_Red.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Lit_White.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smooth0_0.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smooth0_1.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smooth0_2.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smooth0_3.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smooth0_4.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smooth0_5.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smooth0_6.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smooth0_7.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smooth0_8.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smooth0_9.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smooth1_1.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smoothdielectric0_0.mat

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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smoothdielectric0_1.mat

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         m_Scale: {x: 1, y: 1}
     - _DoubleSidedEnable: 0
     - _DoubleSidedMirrorEnable: 1
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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smoothdielectric0_2.mat

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   m_EnableInstancingVariants: 0
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         m_Texture: {fileID: 0}
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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smoothdielectric0_3.mat

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         m_Scale: {x: 1, y: 1}
         m_Texture: {fileID: 0}
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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smoothdielectric0_4.mat

   m_ShaderKeywords: _NORMALMAP_TANGENT_SPACE
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+  m_DoubleSidedGI: 0
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         m_Scale: {x: 1, y: 1}
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         m_Texture: {fileID: 0}
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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smoothdielectric0_5.mat

   m_ShaderKeywords: _NORMALMAP_TANGENT_SPACE
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         m_Texture: {fileID: 0}
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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smoothdielectric0_6.mat

   m_ShaderKeywords: _NORMALMAP_TANGENT_SPACE
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+  m_DoubleSidedGI: 0
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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smoothdielectric0_7.mat

   m_ShaderKeywords: _NORMALMAP_TANGENT_SPACE
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+  m_DoubleSidedGI: 0
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         m_Scale: {x: 1, y: 1}
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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smoothdielectric0_8.mat

   m_ShaderKeywords: _NORMALMAP_TANGENT_SPACE
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         m_Scale: {x: 1, y: 1}
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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smoothdielectric0_9.mat

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+  m_DoubleSidedGI: 0
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Assets/TestScenes/HDTest/GraphicTest/Common/Material/Mat_smoothdielectric1_0.mat

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+  m_DoubleSidedGI: 0
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         m_Scale: {x: 1, y: 1}
     - _DoubleSidedEnable: 0
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+    - _DoubleSidedNormalMode: 1
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     - _DstBlend: 0
     - _EmissiveColorMode: 1

Assets/TestScenes/HDTest/GraphicTest/LayeredTessellation/Material/Layer-2-woord-rock.mat

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   m_ShaderKeywords: _HEIGHTMAP0 _HEIGHTMAP1 _NORMALMAP0 _NORMALMAP1 _NORMALMAP_TANGENT_SPACE0
     _NORMALMAP_TANGENT_SPACE1 _NORMALMAP_TANGENT_SPACE2 _NORMALMAP_TANGENT_SPACE3
-    _TESSELLATION_DISPLACEMENT
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     - _GlossMapScale: 1
     - _Glossiness: 0.5
     - _GlossyReflections: 1
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     - _InheritBaseNormal3: 0
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     - _LayerCenterOffset1: 0.5
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     - _PPDMaxSamples: 15
     - _PPDMinSamples: 5
     - _Parallax: 0.02
+    - _ShiverDirectionality: 0.5
+    - _ShiverDrag: 0.2
     - _Smoothness0: 0.5
     - _Smoothness1: 0.5
     - _Smoothness2: 0.5
     - _SrcBlend: 1
     - _StencilRef: 2
+    - _Stiffness: 1
     - _SurfaceType: 0
     - _TessellationBackFaceCullEpsilon: -0.25
     - _TessellationFactor: 4
     - _TessellationMode: 1
     - _TessellationObjectScale: 0
     - _TessellationShapeFactor: 0.75
+    - _TessellationTilingScale: 1
     - _TexWorldScale0: 1
     - _TexWorldScale1: 1
     - _TexWorldScale2: 1

Assets/TestScenes/HDTest/GraphicTest/Parallax Occlusion Mapping/Material/POM - Rock.mat

   m_ShaderKeywords: _HEIGHTMAP _NORMALMAP _NORMALMAP_TANGENT_SPACE _PER_PIXEL_DISPLACEMENT
   m_LightmapFlags: 4
   m_EnableInstancingVariants: 0
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   m_CustomRenderQueue: -1
   stringTagMap: {}
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         m_Scale: {x: 1, y: 1}
         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
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         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
     - _DoubleSidedEnable: 0
     - _DoubleSidedMirrorEnable: 1
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+    - _DoubleSidedNormalMode: 1
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     - _DstBlend: 0
     - _EmissiveColorMode: 1

Assets/TestScenes/HDTest/GraphicTest/Parallax Occlusion Mapping/Material/POM - Wood triplanar.mat

   m_PrefabInternal: {fileID: 0}
   m_Name: POM - Wood triplanar
   m_Shader: {fileID: 4800000, guid: 6e4ae4064600d784cac1e41a9e6f2e59, type: 3}
-  m_ShaderKeywords: _ENABLEPERPIXELDISPLACEMENT_OFF _HEIGHTMAP _MAPPING_TRIPLANAR
-    _NORMALMAP _NORMALMAP_TANGENT_SPACE
+  m_ShaderKeywords: _HEIGHTMAP _MAPPING_TRIPLANAR _NORMALMAP _NORMALMAP_TANGENT_SPACE
+  m_DoubleSidedGI: 0
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         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
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         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
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     - _DoubleSidedMirrorEnable: 1
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+    - _DoubleSidedNormalMode: 1
     - _Drag: 1
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     - _EmissiveColorMode: 1

Assets/TestScenes/HDTest/GraphicTest/Parallax Occlusion Mapping/Material/POM - Wood.mat

   m_ShaderKeywords: _HEIGHTMAP _NORMALMAP _NORMALMAP_TANGENT_SPACE _PER_PIXEL_DISPLACEMENT
   m_LightmapFlags: 4
   m_EnableInstancingVariants: 0
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   stringTagMap: {}
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+        m_Scale: {x: 1, y: 1}
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     - _OcclusionMap:
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         m_Scale: {x: 1, y: 1}
         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
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         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
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     - _EmissiveColorMode: 1

Assets/TestScenes/HDTest/GraphicTest/SSS/Materials/SSSHead.mat

   m_PrefabInternal: {fileID: 0}
   m_Name: SSSHead
   m_Shader: {fileID: 4800000, guid: 6e4ae4064600d784cac1e41a9e6f2e59, type: 3}
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-    _ENABLEWIND_OFF _NORMALMAP _NORMALMAP_TANGENT_SPACE
+  m_ShaderKeywords: _MATID_SSS _NORMALMAP _NORMALMAP_TANGENT_SPACE
   m_LightmapFlags: 4
   m_EnableInstancingVariants: 0
   m_DoubleSidedGI: 0

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

     _TESSELLATION_DISPLACEMENT _TESSELLATION_TILING_SCALE
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   m_EnableInstancingVariants: 0
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   m_CustomRenderQueue: -1
   stringTagMap: {}
   disabledShaderPasses:
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         m_Scale: {x: 1, y: 1}
         m_Texture: {fileID: 0}
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         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
     - _DoubleSidedEnable: 0
     - _DoubleSidedMirrorEnable: 1
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     - _Drag: 1
     - _DstBlend: 0
     - _EmissiveColorMode: 0

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

     _TESSELLATION_TILING_SCALE
   m_LightmapFlags: 4
   m_EnableInstancingVariants: 0
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   m_CustomRenderQueue: -1
   stringTagMap: {}
   disabledShaderPasses:
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         m_Scale: {x: 1, y: 1}
         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
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+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
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         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
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Assets/TestScenes/HDTest/GraphicTest/Triplanar/Material/Wood triplanar.mat

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Assets/TestScenes/HDTest/GraphicTest/Two Sided/Material/GroundLeaf_DoubleSided.mat

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Assets/TestScenes/HDTest/GraphicTest/Two Sided/Material/GroundLeaf_DoubleSidedFlip.mat

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Assets/TestScenes/HDTest/GraphicTest/Two Sided/Material/GroundLeaf_DoubleSidedFlipSSS.mat

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Assets/TestScenes/HDTest/GraphicTest/Two Sided/Material/GroundLeaf_DoubleSidedMirror.mat

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Assets/TestScenes/HDTest/GraphicTest/Unlit/Material/TestUnlit Mask.mat

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Assets/TestScenes/HDTest/GraphicTest/Unlit/Material/TestUnlit Transparent.mat

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Assets/TestScenes/HDTest/GraphicTest/Unlit/Material/TestUnlit.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/CubeTransparent.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a00_s00.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a00_s01.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a00_s02.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a00_s03.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a00_s04.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a00_s05.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a00_s06.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a00_s07.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a00_s08.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a00_s09.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a00_s10.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a02_s00.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a02_s01.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a02_s02.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a02_s03.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a02_s04.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a02_s05.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a02_s06.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a02_s07.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a02_s08.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a02_s09.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a02_s10.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a04_s00.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a04_s01.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a04_s02.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a04_s03.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a04_s04.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a04_s05.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a04_s06.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a04_s07.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a04_s08.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a04_s09.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a04_s10.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a06_s00.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a06_s01.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a06_s02.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a06_s03.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a06_s04.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a06_s05.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a06_s06.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a06_s07.mat

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Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/GGX Test/GGX_a06_s08.mat

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