修改遮罩RenderQueue 为1900

Assets/Matierials/Black.mat

@@ -14,7 +14,7 @@ Material:
   m_LightmapFlags: 4
   m_EnableInstancingVariants: 0
   m_DoubleSidedGI: 0
-  m_CustomRenderQueue: -1
+  m_CustomRenderQueue: 1900
   stringTagMap: {}
   disabledShaderPasses: []
   m_SavedProperties: