I found something on that site: I found something new by looking at the "Display picture".
myImage.opaque = Yes; // Clearly opaque for execution Can anyone explain this to me, please? And what type of (or use) images does this work for? When not Thank you for your time ... The iPhone GPU is a tile-based renderer if one Overlaying layer is completely opaque on the whole tile, so GPU can install any graphics command related to the layer below the tile and ignore the processing, apart from addition of the pixels in that tile. If your image does not cover a complete tile, GPU still has to process multiple layers potentially depending on the size of a tile implementation, but small graphics images cover a tile There is very little chance of Large images covering many tiles will show the biggest benefit of being opaque.
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