From c67e43d076109c8b6b884ccb47bb48d6765828ea Mon Sep 17 00:00:00 2001
From: Matt Brubeck <mbrubeck@limpet.net>
Date: Thu, 28 Jan 2016 13:03:21 -0800
Subject: [PATCH] Use double buffering by default on GLX

---
 src/api/glx/mod.rs | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/api/glx/mod.rs b/src/api/glx/mod.rs
index d3f28edd..95b6f99e 100644
--- a/src/api/glx/mod.rs
+++ b/src/api/glx/mod.rs
@@ -415,10 +415,9 @@ unsafe fn choose_fbconfig(glx: &ffi::glx::Glx, extensions: &str, xlib: &ffi::Xli
             out.push(stencil as c_int);
         }
 
-        if let Some(double_buffer) = reqs.double_buffer {
-            out.push(ffi::glx::DOUBLEBUFFER as c_int);
-            out.push(if double_buffer { 1 } else { 0 });
-        }
+        let double_buffer = reqs.double_buffer.unwrap_or(true);
+        out.push(ffi::glx::DOUBLEBUFFER as c_int);
+        out.push(if double_buffer { 1 } else { 0 });
 
         if let Some(multisampling) = reqs.multisampling {
             if extensions.split(' ').find(|&i| i == "GLX_ARB_multisample").is_some() {