Various typo fix + disable extra pass if distortion only

ScriptableRenderPipeline/HDRenderPipeline/HDStringConstants.cs

         public static readonly string s_SRPDefaultUnlitStr = "SRPDefaultUnlit";
         public static readonly string s_MotionVectorsStr = "MotionVectors";
         public static readonly string s_DistortionVectorsStr = "DistortionVectors";
-        public static readonly string s_TransparentDepthPrepassStr = "TransparentDepthPrepass";
+        public static readonly string s_TransparentDepthPrePassStr = "TransparentDepthPrepass";
-        public static readonly string s_TransparentDepthPostpassStr = "TransparentDepthPostpass";
+        public static readonly string s_TransparentDepthPostPassStr = "TransparentDepthPostpass";
         public static readonly string s_MetaStr = "Meta";
         public static readonly string s_ShadowCasterStr = "ShadowCaster";
 

ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/Lit.shader

         _AlphaCutoff("Alpha Cutoff", Range(0.0, 1.0)) = 0.5
         _AlphaCutoffPostpass("_AlphaCutoffPostpass", Range(0.0, 1.0)) = 0.5
         [ToggleOff] _TransparentBackfaceEnable("_TransparentBackfaceEnable", Float) = 0.0
-        [ToggleOff] _TransparentDepthPostpassEnable("_TransparentBackfaceEnable", Float) = 0.0
+        [ToggleOff] _TransparentDepthPostpassEnable("_TransparentDepthPostpassEnable", Float) = 0.0
 
         // Transparency
         [Enum(None, 0, Plane, 1, Sphere, 2)]_RefractionMode("Refraction Mode", Int) = 0

ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/LitTessellation.shader

         _AlphaCutoff("Alpha Cutoff", Range(0.0, 1.0)) = 0.5
         _AlphaCutoffPostpass("_AlphaCutoffPostpass", Range(0.0, 1.0)) = 0.5
         [ToggleOff] _TransparentBackfaceEnable("_TransparentBackfaceEnable", Float) = 0.0
-        [ToggleOff] _TransparentDepthPostpassEnable("_TransparentBackfaceEnable", Float) = 0.0
+        [ToggleOff] _TransparentDepthPostpassEnable("_TransparentDepthPostpassEnable", Float) = 0.0
 
         // Transparency
         [Enum(None, 0, Plane, 1, Sphere, 2)]_RefractionMode("Refraction Mode", Int) = 0
             #include "ShaderPass/LitSharePass.hlsl"
             #include "LitData.hlsl"
             #include "../../ShaderPass/ShaderPassForward.hlsl"
+
+            ENDHLSL
+        }
+
+        Pass
+        {
+            Name "TransparentDepthPostPass"
+            Tags { "LightMode" = "TransparentDepthPostPass" }
+
+            Cull[_CullMode]
+            ZWrite On
+            ColorMask 0
+
+            HLSLPROGRAM
+
+            #define SHADERPASS SHADERPASS_DEPTH_ONLY
+            #define CUTOFF_TRANSPARENT_DEPTH_POSTPASS
+            #include "../../ShaderVariables.hlsl"
+            #include "../../Material/Material.hlsl"
+            #include "ShaderPass/LitDepthPass.hlsl"
+            #include "LitData.hlsl"
+            #include "../../ShaderPass/ShaderPassDepthOnly.hlsl"
 
             ENDHLSL
         }

ScriptableRenderPipeline/HDRenderPipeline/Material/Unlit/Editor/BaseUnlitUI.cs

                 material.SetShaderPassEnabled(HDShaderPassNames.s_GBufferDebugDisplayStr, true);
                 material.SetShaderPassEnabled(HDShaderPassNames.s_MotionVectorsStr, enablePass);
                 material.SetShaderPassEnabled(HDShaderPassNames.s_DistortionVectorsStr, distortionEnable); // note: use distortionEnable
-                material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentDepthPrepassStr, enablePass);
+                material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentDepthPrePassStr, enablePass);
+                material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentBackfaceStr, enablePass);
+                material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentBackfaceDebugDisplayStr, enablePass);
+                material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentDepthPostPassStr, enablePass);
                 material.SetShaderPassEnabled(HDShaderPassNames.s_MetaStr, enablePass);
                 material.SetShaderPassEnabled(HDShaderPassNames.s_ShadowCasterStr, enablePass);
             }
                 bool depthWriteEnable = (material.GetFloat(kTransparentDepthPrepassEnable) > 0.0f) && ((SurfaceType)material.GetFloat(kSurfaceType) == SurfaceType.Transparent);
                 if (depthWriteEnable)
                 {
-                    material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentDepthPrepassStr, true);
+                    material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentDepthPrePassStr, true);
-                    material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentDepthPrepassStr, false);
+                    material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentDepthPrePassStr, false);
                 }
             }
 
                 if (depthWriteEnable)
                 {
-                    material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentDepthPostpassStr, true);
+                    material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentDepthPostPassStr, true);
-                    material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentDepthPostpassStr, false);
+                    material.SetShaderPassEnabled(HDShaderPassNames.s_TransparentDepthPostPassStr, false);
                 }
             }