Minor optimizatoin, precompute inverse TexWorldScale

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

-using System;
+using System;
 using UnityEngine;
 using UnityEngine.Experimental.Rendering;
 using UnityEngine.Experimental.Rendering.HDPipeline;
 
             // Precompute.
             InvTilingScale[layerIndex].floatValue = 2 / (Mathf.Abs(baseColorMap[layerIndex].textureScaleAndOffset.x) + Mathf.Abs(baseColorMap[layerIndex].textureScaleAndOffset.y));
+            if ((uvBaseMapping == UVBaseMapping.Planar) || (uvBaseMapping == UVBaseMapping.Triplanar))
+            {
+                InvTilingScale[layerIndex].floatValue = InvTilingScale[layerIndex].floatValue / TexWorldScale[layerIndex].floatValue;
+            }
 
             EditorGUI.indentLevel--;
             EditorGUILayout.Space();

ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/LitData.hlsl

 
 float GetDisplacementInverseTilingScale()
 {
+    // Inverse tiling scale = 2 / (abs(_BaseColorMap_ST.x) + abs(_BaseColorMap_ST.y)
+    // Inverse tiling scale *= (1 / _TexWorldScale) if planar or triplanar
-    return _InvTilingScale
-    #if defined(_MAPPING_PLANAR) || defined(_MAPPING_TRIPLANAR)
-        * rcp(_TexWorldScale)
-    #endif
-        ;
+    return _InvTilingScale;
 #else
     return 1.0;
 #endif