change terrain shader to use custom bilinear sampling for mapbox elevation textures. standard bilinear sampling errors on certain elevation changes, point sampling causes steps in low tex resolution. solution is this custom bilinear where we sample the point, convert to elevation and only lerp afterwards

Author: brnkhy

Runtime/Mapbox/BaseModule/Unity/Visuals/Materials/ElevatedTerrainMaterial.mat

@@ -15,14 +15,17 @@ MonoBehaviour:
   version: 7
 --- !u!21 &2100000
 Material:
-  serializedVersion: 6
+  serializedVersion: 8
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_Name: ElevatedTerrainMaterial
-  m_Shader: {fileID: -6465566751694194690, guid: e6f20eca448696e4eb2a244f2914805d, type: 3}
-  m_ShaderKeywords: 
+  m_Shader: {fileID: -6465566751694194690, guid: e44ed2d518a7c4a20bd9799360a9e7ed, type: 3}
+  m_Parent: {fileID: 0}
+  m_ModifiedSerializedProperties: 0
+  m_ValidKeywords: []
+  m_InvalidKeywords: []
   m_LightmapFlags: 4
   m_EnableInstancingVariants: 0
   m_DoubleSidedGI: 0
@@ -31,6 +34,7 @@ Material:
     MotionVector: User
   disabledShaderPasses:
   - MOTIONVECTORS
+  m_LockedProperties: 
   m_SavedProperties:
     serializedVersion: 3
     m_TexEnvs:
@@ -78,6 +82,7 @@ Material:
         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
         m_Offset: {x: 0, y: 0}
+    m_Ints: []
     m_Floats:
     - Boolean_d8ca466cd8bb4fb286885becb29145db: 1
     - _AlphaClip: 0
@@ -102,6 +107,7 @@ Material:
     - _SrcBlend: 1
     - _Surface: 0
     - _TileScale: 5
+    - _UsingLinearColorspace: 1
     - _WorkflowMode: 1
     - _ZWrite: 1
     m_Colors: