From d605db520f04154969f56175a10cebd826299905 Mon Sep 17 00:00:00 2001
From: the_fiddler <the_fiddler@ebc5dd9b-fb1d-0410-b6f8-d24c324e9604>
Date: Tue, 18 Nov 2008 12:44:52 +0000
Subject: [PATCH] Fall back to Clamp, if ClampToEdge is not supported.

---
 Source/Utilities/Fonts/TextureFont.cs | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/Source/Utilities/Fonts/TextureFont.cs b/Source/Utilities/Fonts/TextureFont.cs
index ae1e1ec0..559973c2 100644
--- a/Source/Utilities/Fonts/TextureFont.cs
+++ b/Source/Utilities/Fonts/TextureFont.cs
@@ -401,8 +401,16 @@ using System.Text.RegularExpressions;
             GL.BindTexture(TextureTarget.Texture2D, texture);
             GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.Linear);
             GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Linear);
-            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)All.ClampToEdge);
-            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)All.ClampToEdge);
+            if (GL.SupportsExtension("Version12"))
+            {
+                GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)All.ClampToEdge);
+                GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)All.ClampToEdge);
+            }
+            else
+            {
+                GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)All.Clamp);
+                GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)All.Clamp);
+            }
 
             GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Alpha, texture_width, texture_height, 0,
                 OpenTK.Graphics.PixelFormat.Rgba, PixelType.UnsignedByte, IntPtr.Zero);