From 62c9793a6e6417013fdff9df9b28a65da964bf1a Mon Sep 17 00:00:00 2001
From: "Stefanos A." <stapostol@gmail.com>
Date: Wed, 6 Nov 2013 01:04:59 +0100
Subject: [PATCH] Fixed number of buffers

ContextAttribute.DOUBLEBUFFER is a boolean in SDL (false->single
buffering, true->double buffering). We need to adjust the number of
buffers accordingly (single buffering->1 buffer, double buffering->2
buffers).
---
 Source/OpenTK/Platform/SDL2/Sdl2GraphicsContext.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Source/OpenTK/Platform/SDL2/Sdl2GraphicsContext.cs b/Source/OpenTK/Platform/SDL2/Sdl2GraphicsContext.cs
index 633a2450..e7ea0a09 100644
--- a/Source/OpenTK/Platform/SDL2/Sdl2GraphicsContext.cs
+++ b/Source/OpenTK/Platform/SDL2/Sdl2GraphicsContext.cs
@@ -92,6 +92,9 @@ namespace OpenTK.Platform.SDL2
 
             int buffers;
             SDL.GL.GetAttribute(ContextAttribute.DOUBLEBUFFER, out buffers);
+            // DOUBLEBUFFER return a boolean (0-false, 1-true), so we need
+            // to adjust the buffer count (false->1 buffer, true->2 buffers)
+            buffers++;
 
             int red, green, blue, alpha;
             SDL.GL.GetAttribute(ContextAttribute.RED_SIZE, out red);