Call native gl functions via PyOpenGL has no context about moderngl-window HOT 11 CLOSED

Ok, the latest release has fixed the issue. Happy hacking!!

from moderngl-window.

This is probably just a lingering glError that happened during initialization. Consume that error with pyopengl or self.ctx.error in your __init__.

I should probably ensure in the window itself there are no errors lingering.

EDIT: Never mind. I'm already doing this

from moderngl-window.

Are you running it with run_window_config(Config) ?
Also, does one of the examples even work for you in the examples directory?

from moderngl-window.

This works for me. It does indeed look like a glerror was lingering from somewhere..

import moderngl_window
from OpenGL.GL import *


class BasicWindowConfig(moderngl_window.WindowConfig):
    """Minimal WindowConfig example"""
    gl_version = (3, 3)
    title = "Basic Window Config"

    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        # Consume lingering glerror from somewhere
        self.ctx.error

    def render(self, time, frametime):
        glClearColor(1.0, 0.0, 0.0, 0.0)
        glClear(GL_COLOR_BUFFER_BIT)


if __name__ == '__main__':
    moderngl_window.run_window_config(BasicWindowConfig)

from moderngl-window.

Yep. It's a lingering glError from querying the context info. Everything should work if you just consume the glerror. Meanwhile I'll fix this bug.

The err = 1280 you are getting is just a GL_INVALID_ENUM lingering from earlier. If you did not have a context you would see a completely different error.

from moderngl-window.

Released a new version: 2.0.2 that should fix this.

Upgrade with pip install -U moderngl-window

Also added a basic pyopengl example: https://github.com/moderngl/moderngl-window/blob/master/examples/with_pyopengl.py

Please let me know if this resolves your issue.

from moderngl-window.

Are you running it with run_window_config(Config) ?
Also, does one of the examples even work for you in the examples directory?

I am running it with run_window_config(Config), I have added that.
Some of the examples do work, but others haven't been tested.

from moderngl-window.

Upgrade to moderngl-window 2.0.2 and I'm 99% sure your issues will be resolved!

from moderngl-window.

This works for me. It does indeed look like a glerror was lingering from somewhere..

import moderngl_window
from OpenGL.GL import *


class BasicWindowConfig(moderngl_window.WindowConfig):
    """Minimal WindowConfig example"""
    gl_version = (3, 3)
    title = "Basic Window Config"

    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        # Consume lingering glerror from somewhere
        self.ctx.error

    def render(self, time, frametime):
        glClearColor(1.0, 0.0, 0.0, 0.0)
        glClear(GL_COLOR_BUFFER_BIT)


if __name__ == '__main__':
    moderngl_window.run_window_config(BasicWindowConfig)

After I add self.ctx.error at the top __init__ function, everything goes pretty fine. Many thanks to you!

from moderngl-window.

I'm cloning this project because my mirror doesn't contain the latest version.

from moderngl-window.

ah ok. git pull then 😄

Good luck with your projects @Remering and do not hesitate to open new issues if you stumble over something weird.

from moderngl-window.