From b4cd8e462882ca495f602532e1cf8fd5dbf93518 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=CE=B6eh=20Matt?= <5415177+ZehMatt@users.noreply.github.com>
Date: Mon, 11 Oct 2021 12:01:11 -0700
Subject: [PATCH] Fix #15560: Memory leak due to OpenGL Renderer not releasing
 a texture

---
 distribution/changelog.txt                                 | 1 +
 src/openrct2-ui/drawing/engines/opengl/SwapFramebuffer.cpp | 5 +++++
 src/openrct2-ui/drawing/engines/opengl/SwapFramebuffer.h   | 1 +
 3 files changed, 7 insertions(+)

diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index d547108d3f..9d9fde6605 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -36,6 +36,7 @@
 - Fix: [#15496] Crash in paint_swinging_inverter_ship_structure().
 - Fix: [#15503] Freeze when doing specific coaster merges with block brakes.
 - Fix: [#15514] Two different “quit to menu” menu items are available in track designer and track design manager.
+- Fix: [#15560] Memory leak due to OpenGL Renderer not releasing a texture.
 - Improved: [#3417] Crash dumps are now placed in their own folder.
 - Improved: [#13524] macOS arm64 native (universal) app
 - Improved: [#15538] Software rendering can now draw in parallel when Multithreading is enabled.
diff --git a/src/openrct2-ui/drawing/engines/opengl/SwapFramebuffer.cpp b/src/openrct2-ui/drawing/engines/opengl/SwapFramebuffer.cpp
index fb7098183c..39c88b9dec 100644
--- a/src/openrct2-ui/drawing/engines/opengl/SwapFramebuffer.cpp
+++ b/src/openrct2-ui/drawing/engines/opengl/SwapFramebuffer.cpp
@@ -27,6 +27,11 @@ SwapFramebuffer::SwapFramebuffer(int32_t width, int32_t height)
     glClearBufferfv(GL_DEPTH, 0, depthValueTransparent);
 }
 
+SwapFramebuffer::~SwapFramebuffer()
+{
+    glDeleteTextures(1, &_backDepth);
+}
+
 void SwapFramebuffer::ApplyTransparency(ApplyTransparencyShader& shader, GLuint paletteTex)
 {
     _mixFramebuffer.Bind();
diff --git a/src/openrct2-ui/drawing/engines/opengl/SwapFramebuffer.h b/src/openrct2-ui/drawing/engines/opengl/SwapFramebuffer.h
index 5880e254f9..44d1659a3b 100644
--- a/src/openrct2-ui/drawing/engines/opengl/SwapFramebuffer.h
+++ b/src/openrct2-ui/drawing/engines/opengl/SwapFramebuffer.h
@@ -33,6 +33,7 @@ private:
 
 public:
     SwapFramebuffer(int32_t width, int32_t height);
+    ~SwapFramebuffer();
 
     const OpenGLFramebuffer& GetFinalFramebuffer() const
     {