Fix #15560: Memory leak due to OpenGL Renderer not releasing a texture

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.

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();

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
     {