Re: Is this a bug in Tiger's NSBitmapImageRep?
Re: Is this a bug in Tiger's NSBitmapImageRep?
- Subject: Re: Is this a bug in Tiger's NSBitmapImageRep?
- From: Cameron Hayne <email@hidden>
- Date: Wed, 4 May 2005 09:40:23 -0400
On 3-May-05, at 10:24 PM, Rick Hoge wrote:
What is the preferred row width for fast drawing? We were able to
reverse engineer this solution and it looked like we had to provide
32 byte alignment (but we were pretty frantically trying to fix a
number of Tiger-related issues that cropped up so could be wrong.
I thought that 16 byte alignment was required to trigger AltiVec).
I am calling initWithBitmapDataPlanes with a zero value for
bytesPerRow. If I query the bytesPerRow and print it out, I see that
the bytesPerRow seems to be extended to a multiple of 32. It doesn't
seem to avoid powers of two.
--
Cameron Hayne
email@hidden
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