From 6b5f7b4763ef5a28c270095ded70d720fd4b5b8e Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Tue, 23 Apr 2019 13:05:33 +0300
Subject: [PATCH] - destroy SDL window on Vulkan to OpenGL fallback

https://forum.zdoom.org/viewtopic.php?t=64412
---
 src/posix/sdl/sdlglvideo.cpp | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/src/posix/sdl/sdlglvideo.cpp b/src/posix/sdl/sdlglvideo.cpp
index 47580f830..78f545216 100644
--- a/src/posix/sdl/sdlglvideo.cpp
+++ b/src/posix/sdl/sdlglvideo.cpp
@@ -145,6 +145,14 @@ namespace Priv
 		}
 	}
 
+	void DestroyWindow()
+	{
+		assert(Priv::window != nullptr);
+
+		SDL_DestroyWindow(Priv::window);
+		Priv::window = nullptr;
+	}
+
 	void SetupPixelFormat(int multisample, const int *glver)
 	{
 		SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
@@ -276,6 +284,11 @@ DFrameBuffer *SDLVideo::CreateFrameBuffer ()
 		}
 		catch (CRecoverableError const&)
 		{
+			if (Priv::window != nullptr)
+			{
+				Priv::DestroyWindow();
+			}
+
 			Priv::vulkanEnabled = false;
 		}
 	}
@@ -428,8 +441,7 @@ SystemGLFrameBuffer::SystemGLFrameBuffer(void *hMonitor, bool fullscreen)
 		GLContext = SDL_GL_CreateContext(Priv::window);
 		if (GLContext == nullptr)
 		{
-			SDL_DestroyWindow(Priv::window);
-			Priv::window = nullptr;
+			Priv::DestroyWindow();
 		}
 		else
 		{
@@ -447,8 +459,7 @@ SystemGLFrameBuffer::~SystemGLFrameBuffer ()
 			SDL_GL_DeleteContext(GLContext);
 		}
 
-		SDL_DestroyWindow(Priv::window);
-		Priv::window = nullptr;
+		Priv::DestroyWindow();
 	}
 }