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Readme
ModernGL is a python wrapper over OpenGL 3.3+ core that simplifies the creation of simple graphics applications like scientific simulations, games or user interfaces. Usually, acquiring in-depth knowledge of OpenGL requires a steep learning curve. In contrast, ModernGL is easy to learn and use, moreover it is capable of rendering with high performance and quality, with less code written. The majority of the moderngl code base is also written in C++ for high performance.
pip install moderngl
>>> import moderngl
>>> ctx = moderngl.create_standalone_context()
>>> buf = ctx.buffer(b'Hello World!') # allocated on the GPU
>>> buf.read()
b'Hello World!'
For complete examples please visit the Examples.
>>> img = Image.open('texture.jpg')
>>> ctx.texture(img.size, 3, img.tobytes())
<Texture: 1>
>>> ctx.buffer(np.array([0.0, 0.0, 1.0, 1.0], dtype='f4'))
<Buffer: 1>
With PyOpenGL, using the original OpenGL API, you have to write three lines to achieve a simple task like binding a VBO:
vbo1 = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, vbo1)
GL.glBufferData(GL.GL_ARRAY_BUFFER, b'Hello World!', GL.GL_STATIC_DRAW)
vbo2 = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, vbo2)
GL.glBufferData(GL.GL_ARRAY_BUFFER, None, GL.GL_DYNAMIC_DRAW)
With ModernGL you need just one simple line per VBO to achieve the same results:
vbo1 = ctx.buffer(b'Hello World!')
vbo2 = ctx.buffer(reserve=1024, dynamic=True)
python -m build .
In many cases yes, the core functions of ModernGL are written in C++. We do not call every OpenGL function from Python, we batch them in a single C++ function instead.
Most of the calls only require OpenGL 3.3. Compute Shaders require OpenGL 4.3. Some functionality relies on their specific extension.
OpenGL 3.3 came out in February 2010. With up to date drivers you will be able to use the most of the ModernGL functions, even on integrated graphics cards.
Anywhere where OpenGL is supported. ModernGL is capable of rendering using a standalone_context as well. Rendering to a window only requires a valid OpenGL context.
NO, ModernGL is responsible for calling the OpenGL API and providing a Pythonic user-friendly API instead. We also provide a utility library moderngl-window making window creation and resource loading very simple.
All the necessary calls are (or can be) implemented in ModernGL. However you can interact with the ModernGL objects from PyOpenGL. If something is missing write an issue or raise a PR.
apt-get install python3-dev libgl1-mesa-dev libx11-dev
python3 -m pip install -e .
pip install -r docs/requirements.txt
python -m sphinx docs build/sphinx
export LIBGL_ALWAYS_SOFTWARE=true
python3 -m pip install glcontext pytest numpy scipy
python3 -X dev -m pytest -s -vvv tests
apt-get install xvfb
alias xpy='xvfb-run -s "-screen 0 1x1x24" python3'
xpy -m moderngl
If you need to cite this repository in academic research:
@Online{Dombi2020,
author = {Szabolcs Dombi},
title = {ModernGL, high performance python bindings for OpenGL 3.3+},
date = {2020-05-01},
publisher = {GitHub},
journal = {GitHub repository},
howpublished = {\url{https://github.com/moderngl/moderngl}},
commit = {<insert hash if needed>}
}
If commit hash is required this can be found per release here: https://github.com/moderngl/moderngl/releases
FAQs
ModernGL: High performance rendering for Python 3
We found that moderngl demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 3 open source maintainers collaborating on the project.
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