From 508e24c01c6169b26bdf3e1310449f19f1613087 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Camilla=20L=C3=B6wy?= <elmindreda@elmindreda.org>
Date: Thu, 13 May 2021 21:38:46 +0200
Subject: [PATCH] Add tracking of single-/double-buffering

This adds the state part of 04f21abb52e557addb932af1634b29658fd3a6ae
(Make GLFW_DOUBLEBUFFER a window attribute), but without the associated
API change, because this is needed by later bug fixes that will go into
the stable branch.
---
 src/internal.h | 1 +
 src/window.c   | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/src/internal.h b/src/internal.h
index 2a5668af..b28e9424 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -375,6 +375,7 @@ struct _GLFWwindow
     GLFWbool            focusOnShow;
     GLFWbool            shouldClose;
     void*               userPointer;
+    GLFWbool            doublebuffer;
     GLFWvidmode         videoMode;
     _GLFWmonitor*       monitor;
     _GLFWcursor*        cursor;
diff --git a/src/window.c b/src/window.c
index 44de03bb..b87a2609 100644
--- a/src/window.c
+++ b/src/window.c
@@ -205,6 +205,8 @@ GLFWAPI GLFWwindow* glfwCreateWindow(int width, int height,
     window->focusOnShow = wndconfig.focusOnShow;
     window->cursorMode  = GLFW_CURSOR_NORMAL;
 
+    window->doublebuffer = fbconfig.doublebuffer;
+
     window->minwidth    = GLFW_DONT_CARE;
     window->minheight   = GLFW_DONT_CARE;
     window->maxwidth    = GLFW_DONT_CARE;