mapbox / mapbox/mapbox-scenekit
Crash in MBImageAPI
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- Dominant language
- Swift
- Stars
- 232
- Forks
- 50
- PR merge metrics
- No merged PRs in 30d
Description
Crash happens when trying to fetch a larger map size.
MapboxImageAPI.swift line 227:
group.notify(queue: DispatchQueue.main) {
self.pendingFetches.removeValue(forKey: groupID)
completion(!hadFailure ? imageBuilder.makeImage() : nil) // HERE: EXC_BAD_ACCESS (code=2
}
what later affects:
terrainNode.fetchTerrainTexture("mapbox/satellite-v9", zoom: 14, progress: { _, _ in }, completion: { image in
terrainNode.geometry?.materials[4].diffuse.contents = image // here
})
In the console I receive tons of following informations:
`2018-08-28 13:46:51.938021+0200 AppName[1937:978808] [Unknown process name] CGBitmapContextInfoCreate: unable to allocate 608605984 bytes for bitmap data`
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with MapboxImageAPI.swift around line 227 and reproduce the crash while fetching the larger map size. Trace imageBuilder.makeImage() and the terrainNode.fetchTerrainTexture completion, then verify that the larger request no longer crashes and the terrain texture receives an image.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- ios, swift
- Domain
- computer-graphics, mobile-dev
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100