(Post-Tutorial Question) Drawing an image with ImGUI.

[Wertuu]

Howdy,
It's been a little while since I finished this tutorial, and I was just wondering if you tried to draw an image into an ImGUI frame? I ran into some issues myself and I was just unsure if I was doing it wrong. In online forums, people have said that it's because it's designed for OpenGL when using LWJGL.

So I guess the question if you do run into ths is: would you recommend an alternative library or doing it without a libray?

[lwjglgamedev]

Hi, it should be possible to do that. I do not understand why they mention OpenGL. In any case, I will try to check an example to see how it can be done, You are trying to display a texture?

Another alternative should be nuklear, which, if I recall corectly, LWJGL has bindings for it.

[Wertuu]

Yes, specifically displaying a Vulkan texture into an ImGui frame. This is a related bug ticket link.

[lwjglgamedev]

Ok. This seems to be solved here. Now you can use longs as texture ids and use the descriptor set associated to the texture. Let's wait for a new release of imgui to be published.

In any case, I will leave this issue open to include a specific example. This will be done in the new version of the book, which uses Vulkan latest features (still in progress). Right now the GUI render class does not care about texture ids (and it should)

[lwjglgamedev]

I just saw that Imgui java port just uploaded a new version which seems to support longs for texture ids: https://github.com/SpaiR/imgui-java

[lwjglgamedev]

This is fixed in new version in the book. Right now is just code (no explanation text) in a private repo, I expect to set up a public branch soon (meaning weeks or a couple of months)