From 4fa5c100469a2ed98f6cdf05e63f91e05c961270 Mon Sep 17 00:00:00 2001
From: UnknownShadow200 <unknownshadow200@gmail.com>
Date: Mon, 16 Sep 2019 08:51:02 +1000
Subject: [PATCH] Revert "Don't unset fullscreen before going into fullscreen"

This reverts commit 004b1b95d16f10b1072b3c780aaaf967cce193a5.
---
 src/Window.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/Window.c b/src/Window.c
index 6ebf7f773..3f1fd2738 100644
--- a/src/Window.c
+++ b/src/Window.c
@@ -2258,6 +2258,7 @@ void Window_FreeFramebuffer(Bitmap* bmp) {
 #include <AGL/agl.h>
 
 static AGLContext ctx_handle;
+static bool ctx_firstFullscreen;
 static int ctx_windowWidth, ctx_windowHeight;
 
 static void GLContext_Check(int code, const char* place) {
@@ -2322,6 +2323,16 @@ static void GLContext_SetFullscreen(void) {
 	GLContext_Check(code, "aglSetFullScreen");
 	GLContext_MakeCurrent();
 
+	/* This is a weird hack to workaround a bug where the first time a context */
+	/* is made fullscreen, we just end up with a blank screen.  So we undo it as fullscreen */
+	/* and redo it as fullscreen. */
+	if (!ctx_firstFullscreen) {
+		ctx_firstFullscreen = true;
+		GLContext_UnsetFullscreen();
+		GLContext_SetFullscreen();
+		return;
+	}
+
 	win_fullscreen   = true;
 	ctx_windowWidth  = Window_Width;
 	ctx_windowHeight = Window_Height;
@@ -2362,10 +2373,15 @@ void GLContext_Init(struct GraphicsMode* mode) {
 	GLContext_Check(0, "Destroying pixel format");
 
 	GLContext_SetDrawable();
+	GLContext_Update();
 	GLContext_MakeCurrent();
 }
 
-void GLContext_Update(void) { aglUpdateContext(ctx_handle); }
+void GLContext_Update(void) {
+	if (win_fullscreen) return;
+	GLContext_SetDrawable();
+	aglUpdateContext(ctx_handle);
+}
 
 void GLContext_Free(void) {
 	if (!ctx_handle) return;