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Pegl-0.2a1
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Python 3 wrapper for the EGL API
| ویژگی | مقدار |
|---|---|
| سیستم عامل | OS Independent |
| نام فایل | Pegl-0.2a1 |
| نام | Pegl |
| نسخه کتابخانه | 0.2a1 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Tim Pederick |
| ایمیل نویسنده | - |
| آدرس صفحه اصلی | https://github.com/perey/pegl |
| آدرس اینترنتی | https://pypi.org/project/Pegl/ |
| مجوز | - |
==============================
Pegl: Python 3 binding for EGL
==============================
Pegl is a binding to EGL_, written in native Python 3 through the ctypes_
library. It provides comprehensive access to EGL functions, while offering a
Pythonic API.
EGL is a specification from the Khronos Group that provides an intermediate
layer between other Khronos specifications (OpenGL, OpenGL ES, OpenVG), called
“client APIs”, and the native graphics system. EGL can supply an implicit
rendering context for each of the client APIs, as well as features like
surfaces and buffering.
Pegl wraps EGL_ version 1.5, and is backwards compatible with previous versions
of the specification.
The current Pegl version is 0.2a1. As an alpha version, care should be taken
before making use of the library! Please test it out and open a GitHub issue to
report the results.
.. _EGL: http://www.khronos.org/egl
.. _ctypes: http://docs.python.org/py3k/library/ctypes
License
=======
Pegl is free software, released under the `GNU GPLv3`_. See the file
``COPYING`` and individual source files for the full license terms.
.. _GNU GPLv3: http://www.gnu.org/licenses/gpl
Use
===
A typical use case might feature these steps:
1. Create a ``Display`` instance
2. Get a ``Config`` instance to match your requirements
3. Bind the client API you want to use
4. Get a ``Context`` instance and/or a ``Surface`` instance, as necessary
5. Do your work in the client API
6. Repeat from step 3 to mix different client APIs in the one application
Sample code for steps 1 to 4 might look like this:
>>> import pegl
>>> dpy = pegl.Display()
>>> conf = dpy.choose_config({pegl.ConfigAttrib.RENDERABLE_TYPE:
... pegl.ClientAPIFlag.OPENGL_ES})[0]
>>> pegl.bind_api(pegl.ClientAPI.OPENGL_ES)
>>> ctx = conf.create_context()
>>> surf = conf.create_pbuffer_surface({pegl.SurfaceAttrib.WIDTH: 640,
... pegl.SurfaceAttrib.HEIGHT: 480})
>>> ctx.make_current(draw=surf)
Development and testing
=======================
Pegl uses tox_ to run tests and compile coverage data. Tests are currently set
up for Python versions 3.7 through 3.9.
I test Pegl on Linux (Fedora with current Mesa releases) and on Windows
(Windows 10 with current ANGLE_ releases). Please run tests on other platforms
and open an issue to report your results!
.. _ANGLE: https://chromium.googlesource.com/angle/angle/
.. _tox: https://github.com/tox-dev/tox
-----------------------------------------
The `PEGLEGLVERSION` environment variable
-----------------------------------------
By default, Pegl will attempt to load all EGL functions up to version 1.5. If
any of a given version’s functions cannot be loaded from the native library, it
infers that the library does not support that version and stops there.
It is possible to force Pegl to stop early by setting the `PEGLEGLVERSION`
environment variable. For instance, setting it to `1.4` will cause Pegl to not
attempt loading EGL 1.5 functions, even if the library supports them.
This is used in the tests to check backwards compatibility, albeit imperfectly.
-------
Roadmap
-------
0.x series
----------
Releases in this series will provide a wrapper that is Pythonic, but still
fairly low-level, and the API is not guaranteed to be stable.
1.x series
----------
Once the basic Pegl functionality is tested and considered usable, I will aim
to improve the API, so that an EGL environment can be set up with a minimum of
code. When I’m happy with the results, version numbers will be bumped up to
1.x, with a corresponding assurance of API stability.
نیازمندی
| مقدار | نام |
|---|---|
| ==2.2.6 | aenum |
نحوه نصب
نصب پکیج whl Pegl-0.2a1:
pip install Pegl-0.2a1.whl
نصب پکیج tar.gz Pegl-0.2a1:
pip install Pegl-0.2a1.tar.gz