Category archives: Snaking

Another OMI-based extension, this time for positional audio mixing. Again, Claude-coded, using the OMI/KHR audio extensions for glTF as the base model and then implementing the actual mixing using Numpy. Supports mp3, wav, opus and flac inputs and stereo (headset) outputs. Up on github as omi_audio and on PyPI as omi_audio as well.

This is ...

I had Claude code up an OMI Physics package using Numpy. It's up on pypi as omi_physics. This follows the OMI extensions to glTF pretty closely to create an engine with the common features you need. It's not trying to be real-world physics, it's just a game engine style simulation.

The core is GL-free, ...

Continuing on with the Open Source work. PyVRML97 2.3.4b1 is almost all build and CI process updates. There are a few minor fixes for modern Python's where bool can't be used as a list index and a change for NumPy 2.x array comparison failures. This beta is mostly just so that we can pull it ...

I've been trying to make some time for Open Source projects again. I've been using LLMs for much of the coding because the vast bulk of it at this point is just grunt work. First up is PyOpenGL. The tests the LLM produced turned up a bunch of bugs in the core that have lain ...

So I'm currently trying to figure out why the PyOpenGL 3.12 test suite is failing. There's a particular test that looks for VBO memory leakage and it looks loosely like this:

for i in range(100):
    create_a_vbo_and_delete_it()
    calculate_total_process_memory()
    assert_no_leak()

It seems that we've removed an entry point that pip 22.0 uses from Python 3.12. That means that you need to install pip from get-pip.py on Ubuntu LTS python3.12.

However even with that done and tox supposedly configured to use pip 23.2.1 in its virtualenvs, I still wind up with pip 22.0 in the ...

So starting to think about a PyOpenGL 4.x release, which would be first to drop Python 2.7 support, so the first one where type-hints can be used to declare metadata for type-coercion (vs the current nonstandard type declarations). The first big question that comes up is:

Given an open collection of types {A,B,C,...}
And a ...

So I spent some of the Victoria Day weekend on PyOpenGL. Biggest changes are:

* got cibuildwheel running on github actions so that we can get a matrix of (manylinux) wheels built for accelerate
* automated upload from github actions to pypi
* investigate the egl regressions; so far all of them seem to be ...

So trying to spend a bit of my vacation going through PyOpenGL issues. So far the biggest issues are all EGL related, with the one currently stumping me is that we do not seem to be able to do an eglMakeCurrent (getting an EGL_BAD_ACCESS) even though the context/view is only ever accessed from the pygame ...

In Pycraft, I figured out the Potions-with-custom-effects, the problem being that Bukkit's PotionEffectType doesn't actually implement the keyed interface, but instead has its own .values() call, so needs a whole special handler. The code for creating potion with custom effects looks like:

    await potion_of(
            'night_vision',
            "Gopher's Gruel",
            {
                'type': 'fast_digging',
                'duration': 20 * 60 * ...