CODEWITHSUNDEEP
objective-cmacoscore-graphics
roland
roland

Reputation: 950

Does CGBitmapContextCreate() have a size limit?

I want to make an extremely large bitmap (250,000 pixels on each side, to be eventually written out as BigTIFF). I don't see a memory size or dimensional limit anywhere in the docs, can Core Graphics handle it?

Upvotes: 1

Views: 205

Answers (1)

Kurt Revis
Kurt Revis

Reputation: 27994

CG is not designed for that kind of workload.

(I'd be surprised if you found any general-purpose graphics framework that is, frankly. If you're pushing images that big, you're going to have to write your own code to get anything done in a reasonable amount of time.)

In my experience, images started to fail once dimensions got over 32767 or so. Not in any organized way, just crashes and hard-to-repro failures; certain parts of the API would work, others wouldn't. Things may be better in 64-bit but I wouldn't count on it.

Upvotes: 1

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