schell/renderling

Support for non-triangle primitives

Open

#198 opened on Sep 5, 2025

View on GitHub
 (1 comment) (0 reactions) (0 assignees)Rust (14 forks)auto 404
enhancementgood first issue

Repository metrics

Stars
 (237 stars)
PR merge metrics
 (PR metrics pending)

Description

Using v0.4.9, this glb file (https://github.com/user-attachments/files/22179111/TempleLines.glb.zip) does not work with the demo viewer. It's rejected by the gltf parser: https://github.com/schell/renderling/blob/8493bcc1bdbb31f0c9c40fedd3359fd7556e9b6c/crates/renderling/src/stage/gltf_support.rs#L339

expected output (from https://modelviewer.dev/editor/):

Support for non triangle primitives is something I would certainly like for my typical use cases. I understand if this sort of thing isn't a high priority, or a non-goal of this project - just interested to hear what you think.

Thanks!

Contributor guide

Research direction
Examine the gltf support.rs file, specifically the function that parses primitives, and modify it to allow non triangle primitive types like lines and points. Refer to the glTF specification for supported primitive types.
Tech stack
rust
Domain
computer graphics
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
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
RustGLTF
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60