From 3fe8cdf05c6ecd0baee3d3d450f54534b1778ce4 Mon Sep 17 00:00:00 2001
From: Flamefire <alex@grundis.de>
Date: Sat, 13 Sep 2014 17:49:21 +0200
Subject: [PATCH] Workaround for OGL bug

---
 VocaluxeLib/Draw/CTexture.cs | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/VocaluxeLib/Draw/CTexture.cs b/VocaluxeLib/Draw/CTexture.cs
index dda82f9c..2db8df42 100644
--- a/VocaluxeLib/Draw/CTexture.cs
+++ b/VocaluxeLib/Draw/CTexture.cs
@@ -117,8 +117,25 @@ namespace VocaluxeLib.Draw
 
         private void _CalcRatios()
         {
-            WidthRatio = (float)_DataSize.Width / _W2;
-            HeightRatio = (float)_DataSize.Height / _H2;
+            // OpenGL has a problem with partial (NPOT) textures, so we remove 1 pixel
+            if (_DataSize.Width == _W2)
+                WidthRatio = 1f;
+            else
+            {
+                int mod = 0;
+                if (_DataSize.Width > 1)
+                    mod = -1;
+                WidthRatio = (float)(_DataSize.Width + mod) / _W2;
+            }
+            if (_DataSize.Height == _H2)
+                WidthRatio = 1f;
+            else
+            {
+                int mod = 0;
+                if (_DataSize.Height > 1)
+                    mod = -1;
+                HeightRatio = (float)(_DataSize.Height + mod) / _H2;
+            }
         }
     }
 }
\ No newline at end of file