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PyOpenGL Documentation

OpenGL under Python is largely the same as OpenGL under most other languages, so you can use much of the documentation you'll find around the Internet, or in your local bookstore.  This page primarily provides links to PyOpenGL-specific documentation.  Users of OpenGLContext should also see the OpenGLContext documentation page.

These documents tend to focus on the particular APIs and details of operation for PyOpenGL (or OpenGL in general).

• Installing PyOpenGL and OpenGLContext -- building and installing the two libraries from binary or source distributions
• PyOpenGL for OpenGL Programmers -- quick introduction to various features of PyOpenGL not normally found in OpenGL programming texts (e.g. strict exception handling, function aliases, array/pointer methods with Numpy)
• PyOpenGL 3.x Reference -- automatically generated versions of the OpenGL programming reference with Python-specific call-signature annotations for PyOpenGL 3.x series.  These are the OpenGL man-pages with PyOpenGL-specific annotations.  The man pages also contain links to real-world PyOpenGL source-code which uses the described entry points.
• GL Reference
• GLU Reference
• GLUT Reference
• GLE Reference
• Contributing -- guide to how to help develop PyOpenGL
• MSDN's OpenGL Platform SDK (including WGL documentation)
• SGI OpenGL Extension Registry -- where to go to look up an OpenGL extension's semantics and interfaces
• OpenGL.org specification collection -- official specifications for OpenGL, GLU and GLUT
• PIL Handbook -- Image handling library for Python
• Numpy Documentation -- documentation for the multi-dimensional array-handling extension

There are a large number of very good books on OpenGL available. Many of these books cover "legacy" OpenGL, rather than the shader/buffer/texture model of OpenGL 3.0. Still, they provide a good grounding that allows you to learn the basics of OpenGL.

Older versions of the official OpenGL Programming Guide, a.k.a "The Red Book" are available online in various places (version 2.0 covers OpenGL 1.1). If you are serious about learning OpenGL, the newer versions of the Red Book, (v3.0) is likely on the shelves of your local bookstore, and is quite readable.

You'll find versions of some of the Red Book tutorial code for Python included in the PyOpenGL-Demo/redbook directory of the PyOpenGL-Demo distribution. These versions are very close to the original source code. The OpenGLContext tests directory also has four of the tutorials converted, "alpha", "alpha3D", "surface" and "trim".

Addison-Wesley Pub Co; ISBN: 0201604582 ; 3rd edition (August 6, 1999)

This book serves as a good introduction to shaders. The shaders described cover the gamut from the simplest 1-line shaders through code to emulate legacy operation to non-realistic shading to caustics and the like. You will generally have to adapt any code you take from here to work with your real-world scenes, but the book offers a strong grounding.

Addison-Wesley Pub Co: ISBN: 978-0-321-33489-3; 2nd edition

This book is an all-round introduction, working up from OpenGL 1.0 era operations all the way to OpenGL 2.x era behaviours. Coverage of newer features tends to be somewhat sketchy, but coverage of older features is extensive. It is notable mainly for being somewhat up-to-date and having exhaustive coverage of what it covers. The book also makes a great anchor for your average supertanker.

Sams Pub: ISBN 0-672-32601-9; 3rd edition

When people think of an "OpenGL tutorial", many will immediately think of the NeHe tutorials by Jeff Molofee, available at http://nehe.gamedev.net/ these tutorials range from the very simple (create an OpenGL window) through the advanced (particle systems, loading scenes from various formats, displaying video textures, text, morphing, multi-texturing). The older tutorials tend to be legacy-mode operations, so you should keep in mind that they are describing old ways of working as you learn with them.

The NeHe tutorials are so popular that there are multiple Python translations available:

• Included in PyOpenGL-Demo you'll find a subdirectory NeHe, which includes translations of tutorials 1 through 6, with a multi-texturing version of tutorial 6 as well. These translations are very close in their approach to the original tutorial's approach in terms of their structure and organization. As a result, they can be somewhat hard to follow as Python code unless you are following along with the tutorial text and reading the reasoning behind the C code.
• PyGame-specific versions by Paul Furber. These are tightly coded direct translations of the NeHe code, idiomatic (function-oriented) Python. Tutorials 1 through 10 are available.
• Included with OpenGLContext, in the tests directory, you'll find a number of files named nehe*.py, these are, as you might expect, translations of the corresponding tutorials. These translations are results-focused, they do not follow the tutorial's structure, instead they use best (object-oriented) practices in Python programming, and particularly OpenGLContext programming without completely violating the idea of the tutorials (they try to keep the executed code in a single file, with minimal external dependencies). Tutorials 1 through 8 are translated, with the glprint.py test being a loose translation of tutorial 13 (bitmapped text). The OpenGLContext documentation collection includes the source online, with brief discussions of the differences from the tutorial code.
• The NeHe tutorials themselves link to (very old) translations which very closely followed the original tutorial structure. These tutorials served as the base for the versions in the PyOpenGL distribution. I would not recommend using them for learning PyOpenGL.

If you have a PyOpenGL-specific tutorial you'd like added to this area, please post to the PyOpenGL-user's mailing list.

• OpenGLContext Tutorials are a series of "annotated code" walk-throughs including some more advanced topics, such as shadow-casting, VBOs and GLSL shaders
• Developing emol (ShowMeDo video tutorials) by Erik Thompson -- develops a molecular viewer using wxPython, PyOpenGL and bzr

Here are some starting points for further exploration.

• OpenGL.org -- The official home of OpenGL on the World Wide Web, includes extensive links to documentation, specifications, and companies involved with OpenGL.
• GameTutorials.com -- introductory, slowly-building tutorials, similar to the NeHe tutorials
• OpenGL.org's tutorials collection
• LightHouse3D Tutorials -- intermediate tutorials on various OpenGL-related subjects
• Gamasutra -- professional-level tutorials, often on "cutting edge" subjects, generally well-written and easily followed code, note that a free registration is required for much of the content, also see their publisher's site, Gamedev.net, which has a decent resources section

Bug reports and feature requests should use the SourceForge project page. General questions, including most programming questions are best answered on the PyOpenGL mailing list. Questions regarding project administration, or development can use the PyOpenGL-devel mailing list.

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