One interesting thing is done while building iOS app: png images are reencoded to make them more efficient. What is done, that alpha value is premultiplied, but the more interesting thins is that bytes are rearranged from RGB to BGR . This is done to match the layout of the iPhone display, so mapping from image is even faster.
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One interesting thing is done while building iOS app: png images are reencoded to make them more efficient. What is done, that alpha value is premultiplied, but the more interesting thins is that bytes are rearranged from RGB to BGR . This is done to match the layout of the iPhone display, so mapping from image is even faster.