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Build and Test the Image Unit

Even before you started creating the image unit, you should have tested the kernel code to make sure that it works properly. (See “Use Quartz Composer to Test the Kernel Routine.”) After you successfully build the image unit, you’ll want to copy it to the following directory:

• /Library/Graphics/Image Units and ~/Library/Graphics/Image Units

Then, you should try loading the image unit from an application and using the filter (or filters) that are packaged in the unit. See “Loading Image Units,” “Getting a List of Filters and Attributes,” and “Processing an Image.”

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