From c3bfac7edd7811d9538aef7111879a79309bcfc1 Mon Sep 17 00:00:00 2001
From: Harald Csaszar <harald.csaszar@pixelcloudgames.com>
Date: Wed, 7 Oct 2020 20:33:51 +0200
Subject: [PATCH] [unity] Fixed a compile error on older .NET versions,
 introduced by last commit 75efe44. See #1765.

---
 .../Assets/Spine/Runtime/spine-unity/Utility/MaterialChecks.cs  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/MaterialChecks.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/MaterialChecks.cs
index 0a44bf940..0cac07a37 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/MaterialChecks.cs
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/MaterialChecks.cs
@@ -302,7 +302,7 @@ namespace Spine.Unity {
 			var requiredChannels =
 				AdditionalCanvasShaderChannels.TexCoord1 |
 				AdditionalCanvasShaderChannels.TexCoord2;
-			return !canvas.additionalShaderChannels.HasFlag(requiredChannels); // HasFlag returns true if both are set.
+			return (canvas.additionalShaderChannels & requiredChannels) != requiredChannels;
 		}
 	}
 }