Doug Binks

A few questions: 1. Do any of the test or example apps which come with the GLFW source show the same issue? 2. If so does the application stop responding,...

Given that the application is still responding I wonder if this is an issue with Hyprland rather than GLFW. However the `"class of unknown"` makes me wonder if you need...

OK, so it seems that the error message is just identifying the window class which has an error and not saying that the lack of a window class is the...

Quick further question - if you remove the rendering call and buffer swapping so that the loop is just: ```C while(!glfwWindowShouldClose(window)){ if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS){ glfwSetWindowShouldClose(window, true); } glfwWaitEvents(); }...

Given the reproduction this doesn't sound like a GLFW issue - Vulkan rendering and presentation does not interact via the GLFW API other than through the initial setup, and the...

Thanks! I am beginning to wonder if this might be a GLFW issue related to sizing of the framebuffer. There is a report of [size issue with Hyprland and GLFW...

The framebuffer size callback should always be called when GLFW resizes the OpenGL window, and for Vulkan you're responsible for this so also use this. Thus I'd not expect the...

> Another thing that I found weird : the visibility flag is always true, even though the window is not technically visible. The window may not be being set to...

I think I understand the issue now, but will have to have a think about how to resolve it. One workaround would be to move your rendering to a different...

From issue #2582 [Ryan's comment on SDL is illuminating](https://github.com/libsdl-org/SDL/blob/f62572344ff6106b78d0665b2720fbb8b9c0ba86/src/video/wayland/SDL_waylandopengles.c#L59-L68).