Merge remote-tracking branch 'refs/remotes/origin/master' into Support-forward-SSS

# Conflicts:
#	ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/Lit.cs

ScriptableRenderPipeline/HDRenderPipeline/Debug/DebugViewMaterialGBuffer.shader

             #pragma multi_compile _ SHADOWS_SHADOWMASK
 
             #include "ShaderLibrary/Common.hlsl"
-            #include "ShaderLibrary/Color.hlsl"
 
             // CAUTION: In case deferred lighting need to support various lighting model statically, we will require to do multicompile with different define like UNITY_MATERIAL_LIT
             #define UNITY_MATERIAL_LIT // Need to be define before including Material.hlsl
             #include "../Material/Material.hlsl"
-            
+
             #ifdef SHADOWS_SHADOWMASK
             TEXTURE2D(_ShadowMaskTexture);
             #endif

ScriptableRenderPipeline/HDRenderPipeline/HDRenderPipeline.cs

         };
 
         static readonly RenderQueueRange k_RenderQueue_PreRefraction = new RenderQueueRange { min = (int)HDRenderQueue.PreRefraction, max = (int)HDRenderQueue.Transparent - 1 };
-        static readonly RenderQueueRange k_RenderQueue_Transparent = new RenderQueueRange { min = (int)HDRenderQueue.Transparent, max = (int)HDRenderQueue.Overlay };
+        static readonly RenderQueueRange k_RenderQueue_Transparent = new RenderQueueRange { min = (int)HDRenderQueue.Transparent, max = (int)HDRenderQueue.Overlay - 1};
 
         readonly HDRenderPipelineAsset m_Asset;
 
 
             // Initialize various compute shader resources
             m_applyDistortionKernel = m_applyDistortionCS.FindKernel("KMain");
-            
+
             m_CopyStencilForSplitLighting   = CoreUtils.CreateEngineMaterial("Hidden/HDRenderPipeline/CopyStencilBuffer");
             m_CopyStencilForSplitLighting.EnableKeyword("EXPORT_HTILE");
             m_CopyStencilForSplitLighting.SetInt(HDShaderIDs._StencilRef, (int)StencilLightingUsage.SplitLighting);

ScriptableRenderPipeline/HDRenderPipeline/Lighting/LightLoop/builddispatchindirect.compute

 #pragma kernel BuildDispatchIndirect
 
-
+#include "ShaderLibrary/Common.hlsl"
 #include "LightLoop.cs.hlsl"
 
 #define UNITY_MATERIAL_LIT // Need to be define before including Material.hlsl

ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/Lit.shader

 
         [ToggleOff]  _AlphaCutoffEnable("Alpha Cutoff Enable", Float) = 0.0
         _AlphaCutoff("Alpha Cutoff", Range(0.0, 1.0)) = 0.5
+        [ToggleOff] _TransparentBackfaceEnable("_TransparentBackfaceEnable", Float) = 0.0
 
         // Transparency
         [Enum(None, 0, Plane, 1, Sphere, 2)]_RefractionMode("Refraction Mode", Int) = 0
             #include "ShaderPass/LitDistortionPass.hlsl"
             #include "LitData.hlsl"
             #include "../../ShaderPass/ShaderPassDistortion.hlsl"
+
+            ENDHLSL
+        }
+
+        Pass
+        {
+            Name "TransparentBackface"
+            Tags { "LightMode" = "TransparentBackface" }
+
+            Blend [_SrcBlend] [_DstBlend]
+            ZWrite [_ZWrite]
+            Cull Front
+
+            HLSLPROGRAM
+
+            #pragma multi_compile LIGHTMAP_OFF LIGHTMAP_ON
+            #pragma multi_compile DIRLIGHTMAP_OFF DIRLIGHTMAP_COMBINED
+            #pragma multi_compile DYNAMICLIGHTMAP_OFF DYNAMICLIGHTMAP_ON
+            #pragma multi_compile _ SHADOWS_SHADOWMASK
+            // #include "../../Lighting/Forward.hlsl"
+            #pragma multi_compile LIGHTLOOP_SINGLE_PASS LIGHTLOOP_TILE_PASS
+            #pragma multi_compile USE_FPTL_LIGHTLIST USE_CLUSTERED_LIGHTLIST
+
+            #define SHADERPASS SHADERPASS_FORWARD
+            #include "../../ShaderVariables.hlsl"
+            #include "../../Lighting/Lighting.hlsl"
+            #include "ShaderPass/LitSharePass.hlsl"
+            #include "LitData.hlsl"
+            #include "../../ShaderPass/ShaderPassForward.hlsl"
 
             ENDHLSL
         }

ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/LitTessellation.shader

 
         [ToggleOff]  _AlphaCutoffEnable("Alpha Cutoff Enable", Float) = 0.0
         _AlphaCutoff("Alpha Cutoff", Range(0.0, 1.0)) = 0.5
+        [ToggleOff] _TransparentBackfaceEnable("_TransparentBackfaceEnable", Float) = 0.0
 
         // Transparency
         [Enum(None, 0, Plane, 1, Sphere, 2)]_RefractionMode("Refraction Mode", Int) = 0
             #include "ShaderPass/LitDistortionPass.hlsl"
             #include "LitData.hlsl"
             #include "../../ShaderPass/ShaderPassDistortion.hlsl"
+
+            ENDHLSL
+        }
+
+        Pass
+        {
+            Name "TransparentBackface"
+            Tags { "LightMode" = "TransparentBackface" }
+
+            Blend [_SrcBlend] [_DstBlend]
+            ZWrite [_ZWrite]
+            Cull Front
+
+            HLSLPROGRAM
+
+            #pragma hull Hull
+            #pragma domain Domain
+
+            #pragma multi_compile LIGHTMAP_OFF LIGHTMAP_ON
+            #pragma multi_compile DIRLIGHTMAP_OFF DIRLIGHTMAP_COMBINED
+            #pragma multi_compile DYNAMICLIGHTMAP_OFF DYNAMICLIGHTMAP_ON
+            #pragma multi_compile _ SHADOWS_SHADOWMASK
+            // #include "../../Lighting/Forward.hlsl"
+            #pragma multi_compile LIGHTLOOP_SINGLE_PASS LIGHTLOOP_TILE_PASS
+            #pragma multi_compile USE_FPTL_LIGHTLIST USE_CLUSTERED_LIGHTLIST
+
+            #define SHADERPASS SHADERPASS_FORWARD
+            #include "../../ShaderVariables.hlsl"
+            #include "../../Lighting/Lighting.hlsl"
+            #include "ShaderPass/LitSharePass.hlsl"
+            #include "LitData.hlsl"
+            #include "../../ShaderPass/ShaderPassForward.hlsl"
 
             ENDHLSL
         }

ScriptableRenderPipeline/HDRenderPipeline/ShaderPass/ShaderPassLightTransport.hlsl

 #error SHADERPASS_is_not_correctly_define
 #endif
 
-#include "ShaderLibrary/Color.hlsl"
-
 CBUFFER_START(UnityMetaPass)
 // x = use uv1 as raster position
 // y = use uv2 as raster position

ScriptableRenderPipeline/HDRenderPipeline/Sky/BlacksmithlSky/Resources/SkyBlacksmith.shader

             #pragma multi_compile _ ATMOSPHERICS_DEBUG
             #pragma multi_compile _ PERFORM_SKY_OCCLUSION_TEST
 
-            #include "ShaderLibrary/Color.hlsl"
+            #include "ShaderLibrary/Color.hlsl"
             #include "ShaderLibrary/CommonLighting.hlsl"
             #include "../../../ShaderVariables.hlsl"
 

ScriptableRenderPipeline/HDRenderPipeline/Sky/HDRISky/Resources/SkyHDRI.shader

     #pragma target 4.5
     #pragma only_renderers d3d11 ps4 vulkan metal // TEMP: until we go further in dev
 
-    #include "ShaderLibrary/Color.hlsl"
+    #include "ShaderLibrary/Color.hlsl"
     #include "ShaderLibrary/CommonLighting.hlsl"
 
     TEXTURECUBE(_Cubemap);

ScriptableRenderPipeline/HDRenderPipeline/Sky/ProceduralSky/Resources/ProceduralSky.shader

 
     #pragma multi_compile _ _ENABLE_SUN_DISK
 
-    #include "ShaderLibrary/Color.hlsl"
+    #include "ShaderLibrary/Color.hlsl"
     #include "ShaderLibrary/CommonLighting.hlsl"
 
     float4   _SkyParam; // x exposure, y multiplier, z rotation