Move the POM height fix into ParallaxOcclusionMapping()

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

             float3 viewDirTS = isPlanar ? float3(uvXZ, V.y) : TransformWorldToTangent(V, worldToTangent);
             int numSteps = (int)lerp(_PPDMaxSamples, _PPDMinSamples, viewDirTS.z);
 
-            // TEMP: 0.1 to achieve parity between tessellation and POM w.r.t. height for a single tile.
-            // TODO: for tiling, the max. height of the tessellated height map should be reduced by NumTiles.
-            float2 offset = ParallaxOcclusionMapping(lod, _PPDLodThreshold, numSteps, viewDirTS, 0.1 * maxHeight, ppdParam, height);
+            float2 offset = ParallaxOcclusionMapping(lod, _PPDLodThreshold, numSteps, viewDirTS, maxHeight, ppdParam, height);
 
             // Apply offset to all UVSet0 / planar
             layerTexCoord.base.uv += offset;
             float3 viewDirTS = isPlanar ? float3(-V.xz, V.y) : TransformWorldToTangent(V, worldToTangent);
             int numSteps = (int)lerp(_PPDMaxSamples, _PPDMinSamples, viewDirTS.z);
 
-            // TEMP: 0.1 to achieve parity between tessellation and POM w.r.t. height for a single tile.
-            // TODO: for tiling, the max. height of the tessellated height map should be reduced by NumTiles.
-            float2 offset = ParallaxOcclusionMapping(lod, _PPDLodThreshold, numSteps, viewDirTS, 0.1 * maxHeight, ppdParam, height);
+            float2 offset = ParallaxOcclusionMapping(lod, _PPDLodThreshold, numSteps, viewDirTS, maxHeight, ppdParam, height);
 
             // Apply offset to all planar UV if applicable
             float4 planarWeight = float4(   layerTexCoord.base0.mappingType == UV_MAPPING_PLANAR ? 1.0 : 0.0,

Assets/ScriptableRenderPipeline/ShaderLibrary/PerPixelDisplacement.hlsl

 // ref: https://www.gamedev.net/resources/_/technical/graphics-programming-and-theory/a-closer-look-at-parallax-occlusion-mapping-r3262
 float2 ParallaxOcclusionMapping(float lod, float lodThreshold, int numSteps, float3 viewDirTS, float maxHeight, PerPixelHeightDisplacementParam ppdParam, out float outHeight)
 {
+    // TEMP: 0.1 to achieve parity between tessellation and POM w.r.t. height for a single tile.
+    // TODO: for tiling, the max. height of the tessellated height map should be reduced by NumTiles.
+    maxHeight *= 0.1;
+
     // Convention: 1.0 is top, 0.0 is bottom - POM is always inward, no extrusion
     float stepSize = 1.0 / (float)numSteps;