linebender / linebender/vello

[`vello_hybrid`] Enable direct textures for image rendering

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C-gpu
Dominant language
Rust
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Forks
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Avg merge
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Merged PRs (30d)
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Description

In vello_hybrid, image rendering is currently supported through an atlas texture, which requires uploading images into that atlas before they can be used. We’d like to extend this by enabling direct usage of external textures, allowing them to be sampled directly in addition to the atlas approach.

Our primary goal is to support rendering thousands of images efficiently, and the atlas remains a simple and robust choice for enabling this across native platforms and the web (webgpu and webgl2). Looking ahead, bindless resources appear to be the preferred path for native platforms, though this option is not available in webgl2.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing the vello_hybrid image-rendering and atlas-texture path. Compare the requirements for direct external textures across native platforms, WebGPU, and WebGL2; done means external textures can be sampled directly while atlas rendering remains supported.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
computer-graphics
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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