From 4b17b7fdbb86eba48eac711b7f7aa33fc23635ec Mon Sep 17 00:00:00 2001
From: Pierre Krieger <pierre.krieger1708@gmail.com>
Date: Wed, 22 Jul 2015 14:39:45 +0200
Subject: [PATCH] Filter invalid FBConfigs

---
 src/api/glx/mod.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/api/glx/mod.rs b/src/api/glx/mod.rs
index f640bee2..e17f73d9 100644
--- a/src/api/glx/mod.rs
+++ b/src/api/glx/mod.rs
@@ -358,6 +358,22 @@ unsafe fn enumerate_configs(glx: &ffi::glx::Glx, xlib: &ffi::Xlib, display: *mut
     };
 
     Ok(configs.into_iter().filter_map(|config| {
+        if get_attrib(ffi::glx::DRAWABLE_TYPE as libc::c_int, config) &
+                                        ffi::glx::WINDOW_BIT as libc::c_int == 0
+        {
+            return None;
+        }
+
+        if get_attrib(ffi::glx::VISUAL_ID as libc::c_int, config) == 0 {
+            return None;
+        }
+
+        if get_attrib(ffi::glx::RENDER_TYPE as libc::c_int, config) &
+                                        ffi::glx::RGBA_BIT as libc::c_int == 0
+        {
+            return None;
+        }
+
         let caveat = get_attrib(ffi::glx::CONFIG_CAVEAT as libc::c_int, config);
         if caveat == ffi::glx::NON_CONFORMANT_CONFIG as libc::c_int {
             return None;