From 58c3a5b4ace000963d4b7ff8420bf203983f7a09 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 1 Dec 2016 12:47:50 +0530
Subject: [PATCH] Release GIL when swapping buffers

---
 kitty/glfw.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kitty/glfw.c b/kitty/glfw.c
index f6833e7da..fdad95229 100644
--- a/kitty/glfw.c
+++ b/kitty/glfw.c
@@ -202,7 +202,9 @@ dealloc(Window* self) {
 
 static PyObject*
 swap_buffers(Window *self) {
+    Py_BEGIN_ALLOW_THREADS;
     glfwSwapBuffers(self->window);
+    Py_END_ALLOW_THREADS;
     Py_RETURN_NONE;
 }