From 1ed60219600562ec49eae61526f020d53c98bbe3 Mon Sep 17 00:00:00 2001
From: Sylvain Becker <sylvain.becker@gmail.com>
Date: Sat, 15 Dec 2018 16:21:24 +0100
Subject: [PATCH] Fixed bug 4426 - allows re-creation of software renderer

Switching between renderers "software -> opengl -> opengles2 -> software" fails.

"opengl -> opengles2" calls SDL_RecreateWindow() and frees "window->surface"
without marking it as "surface_invalid".
---
 src/video/SDL_video.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index 7d9bb1dfb..3d68dfd89 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -1636,6 +1636,7 @@ SDL_RecreateWindow(SDL_Window * window, Uint32 flags)
         window->surface->flags &= ~SDL_DONTFREE;
         SDL_FreeSurface(window->surface);
         window->surface = NULL;
+        window->surface_valid = SDL_FALSE;
     }
     if (_this->DestroyWindowFramebuffer) {
         _this->DestroyWindowFramebuffer(_this, window);