Exiting a running game with a texture bound to a global shader parameter causes a hang and an error.

[bbbscarter]

Tested versions

• Reproducible in Godot Engine v4.3.stable.mono.official
• Using C#.

System information

MacOS 15.1, any renderer

Issue description

Exiting the game causes a hang and the following error:

ERROR: FATAL: Condition "!rc_owner" is true.
   at: _instance_binding_reference_callback (modules/mono/csharp_script.cpp:1237)

This starts happening after using C# to create a texture and bind it to a global shader parameter.

Steps to reproduce

1. Create a global shader parameter of type sampler2D called "texture_test" in the editor.
2. Create and bind a texture to it in code:

public override void _Ready() {
  var _testImage = new Image();
  _testImage = Image.CreateEmpty(256, 256, false, Image.Format.Rgba8);
  var _testTexture = ImageTexture.CreateFromImage(_testImage);

  RenderingServer.GlobalShaderParameterSet("texture_test", _testTexture);
}

3. Run the game and try to exit by pressing the red quit button. Notice the game hangs.

4. Put in the following code and notice the hang goes away:

public override void _ExitTree() {
  RenderingServer.GlobalShaderParameterSet("texture_test", new Variant());
  base._ExitTree();
}

Minimal reproduction project (MRP)

hang-on-exit.zip

[matheusmdx]

This look like the same problem as #89188, try test Godot 4.4 dev 1 or higher to see if the crash stops. You can download them officially here: https://godotengine.org/download/archive/

[bbbscarter]

Ah, good catch - I didn't initially see the link between the two issues, but indeed 4.4 dev 4 fixes it. Thanks!