fix: connection rendering

Assets/NodeMaterialNone.mat

@@ -8,7 +8,7 @@ Material:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_Name: NodeMaterialNone
-  m_Shader: {fileID: 4800000, guid: 650dd9526735d5b46b79224bc6e94025, type: 3}
+  m_Shader: {fileID: 10753, guid: 0000000000000000f000000000000000, type: 0}
   m_Parent: {fileID: 0}
   m_ModifiedSerializedProperties: 0
   m_ValidKeywords: []
@@ -17,14 +17,17 @@ Material:
   m_EnableInstancingVariants: 0
   m_DoubleSidedGI: 0
   m_CustomRenderQueue: -1
-  stringTagMap:
-    RenderType: Opaque
+  stringTagMap: {}
   disabledShaderPasses:
   - MOTIONVECTORS
   m_LockedProperties: 
   m_SavedProperties:
     serializedVersion: 3
     m_TexEnvs:
+    - _AlphaTex:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
     - _BaseMap:
         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
@@ -83,6 +86,7 @@ Material:
         m_Offset: {x: 0, y: 0}
     m_Ints: []
     m_Floats:
+    - PixelSnap: 0
     - _AddPrecomputedVelocity: 0
     - _AlphaClip: 0
     - _AlphaToMask: 0
@@ -98,6 +102,7 @@ Material:
     - _DetailNormalMapScale: 1
     - _DstBlend: 0
     - _DstBlendAlpha: 0
+    - _EnableExternalAlpha: 0
     - _EnvironmentReflections: 1
     - _GlossMapScale: 0
     - _Glossiness: 0
@@ -120,6 +125,8 @@ Material:
     - _BaseColor: {r: 0, g: 0, b: 0, a: 1}
     - _Color: {r: 0, g: 0, b: 0, a: 1}
     - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}
+    - _Flip: {r: 1, g: 1, b: 1, a: 1}
+    - _RendererColor: {r: 1, g: 1, b: 1, a: 1}
     - _SpecColor: {r: 0.19999996, g: 0.19999996, b: 0.19999996, a: 1}
   m_BuildTextureStacks: []
   m_AllowLocking: 1

Assets/Prefabs/Connection.prefab

@@ -75,7 +75,7 @@ LineRenderer:
   m_RenderingLayerMask: 1
   m_RendererPriority: 0
   m_Materials:
-  - {fileID: 2100000, guid: c670d9c5cf5963b4e9ca485b3528ea58, type: 2}
+  - {fileID: 10306, guid: 0000000000000000f000000000000000, type: 0}
   m_StaticBatchInfo:
     firstSubMesh: 0
     subMeshCount: 0