servo / servo/surfman

`CGLCreateContext` fails when creating a context through WebRender from WebGL.

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Dominant language
Rust
Stars
193
Forks
100
Avg merge
17h 55m
Merged PRs (30d)
9

Description

CGLCreateContext fails with error code 10009 when creating via WR from WebGL.

"Invalid share context. Two contexts are a bad match if their pixel formats use different renderers; this can happen if, for example, one format required an accumulation buffer that could be provided only by the software renderer, and the other format did not."

This causes Servo to fallback to a nice and slow alternative.

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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

No source file, test, or entry point is identified. Start by reproducing error code 10009 when creating a CGL context through WebRender from WebGL, then investigate the incompatible share-context pixel formats or renderers described in the report. Done means context creation succeeds without Servo falling back to the slow alternative.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
computer-graphics
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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