From 7e2e627ebf4d9f52afebb7dcda95429f68362f32 Mon Sep 17 00:00:00 2001
From: Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
Date: Tue, 18 Aug 2020 19:38:29 -0300
Subject: [PATCH 16/16] UI: Destroy obs_display when becoming invisible

When a window is made invisible, then visible again, the
obs_display is reused. Turns out, QT destroys the wl_surface
associated with the previewer on Wayland. However, the EGL
surface created on top of this wl_surface is not, and any
attempt to attach a new buffer to it will crash OBS.

Destroy the obs_display when becoming invisible, and when
running as a Wayland client.
---
 UI/qt-display.cpp | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/UI/qt-display.cpp b/UI/qt-display.cpp
index 685ee6f9..fc83e0e0 100644
--- a/UI/qt-display.cpp
+++ b/UI/qt-display.cpp
@@ -6,6 +6,12 @@
 #include <QResizeEvent>
 #include <QShowEvent>
 
+#include <obs-config.h>
+
+#ifdef ENABLE_WAYLAND
+#include <obs-nix-platform.h>
+#endif
+
 static inline long long color_to_int(const QColor &color)
 {
 	auto shift = [&](unsigned val, int shift) {
@@ -33,8 +39,13 @@ OBSQTDisplay::OBSQTDisplay(QWidget *parent, Qt::WindowFlags flags)
 	setAttribute(Qt::WA_NativeWindow);
 
 	auto windowVisible = [this](bool visible) {
-		if (!visible)
+		if (!visible) {
+#ifdef ENABLE_WAYLAND
+			if (obs_get_nix_platform() == OBS_NIX_PLATFORM_WAYLAND)
+				display = nullptr;
+#endif
 			return;
+		}
 
 		if (!display) {
 			CreateDisplay();
-- 
2.28.0