OpenChemistry/avogadrolibs

Migrate from GLEW to libepoxy or GLAD

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#1,992 opened on Apr 22, 2025

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Description

Avogadro version: (please complete the following information from the About box):

  • Avogadrolibs: master

Desktop version: (please complete the following information):

  • OS: Fedora
  • Version 42

Describe the bug Hi,

we are currently trying to get rid of GLEW in Fedora as it isn't maintained anymore. Also GLEW with the last release only supports GLX and not EGL.

There are two ways moving forward:

With both of them migration should be straight forward.

Thanks for considering!

Contributor guide

Research direction
Identify all GLEW usages in the codebase, understand the OpenGL initialization flow, choose either libepoxy or GLAD, and replace GLEW calls accordingly. Ensure the project builds and tests pass.
Tech stack
cpp
Domain
computer graphics
Issue type
Refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitC++
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70