Add FloorVisibilityManager for dynamic floor visibility management and update material properties for transparency effects

Assets/Materials/Tile.mat

@@ -12,16 +12,20 @@ Material:
   m_Parent: {fileID: 0}
   m_ModifiedSerializedProperties: 0
   m_ValidKeywords:
+  - _ALPHAPREMULTIPLY_ON
   - _EMISSION
+  - _SURFACE_TYPE_TRANSPARENT
   m_InvalidKeywords: []
   m_LightmapFlags: 6
-  m_EnableInstancingVariants: 0
+  m_EnableInstancingVariants: 1
   m_DoubleSidedGI: 0
-  m_CustomRenderQueue: -1
+  m_CustomRenderQueue: 3000
   stringTagMap:
-    RenderType: Opaque
+    RenderType: Transparent
   disabledShaderPasses:
   - MOTIONVECTORS
+  - DepthOnly
+  - SHADOWCASTER
   m_LockedProperties: 
   m_SavedProperties:
     serializedVersion: 3
@@ -96,8 +100,8 @@ Material:
     - _Cutoff: 0.5
     - _DetailAlbedoMapScale: 1
     - _DetailNormalMapScale: 1
-    - _DstBlend: 0
-    - _DstBlendAlpha: 0
+    - _DstBlend: 10
+    - _DstBlendAlpha: 10
     - _EnvironmentReflections: 1
     - _GlossMapScale: 0
     - _Glossiness: 0
@@ -112,10 +116,10 @@ Material:
     - _SpecularHighlights: 1
     - _SrcBlend: 1
     - _SrcBlendAlpha: 1
-    - _Surface: 0
+    - _Surface: 1
     - _WorkflowMode: 1
     - _XRMotionVectorsPass: 1
-    - _ZWrite: 1
+    - _ZWrite: 0
     m_Colors:
     - _BaseColor: {r: 1, g: 1, b: 1, a: 1}
     - _Color: {r: 1, g: 1, b: 1, a: 1}