On 15 Jul '08, at 9:19 AM, Richard Henry wrote:
Is it possible to use a CICheckerboardGenerator filter to fill the entire background of a CALayer so that I get a similar effect to that which Photoshop has when the content is transparent?
I think it would be more efficient to set the layer's background "color" to a checkered pattern. You just need to load the pattern tile image (four squares) from a file into a CGImage (or draw it on the fly), then wrap the CGImage in a CGPattern and make a CGColor from it. The QuartzUtils module of my GeekGameBoard library has a GetCGPatternNamed function to do this:
http://mooseyard.com/hg/hgwebdir.cgi/GeekGameBoard/file/tip/Source/QuartzUtils.m
—Jens
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