currently image, even if it's drawn from byte data, will have a quite noticable time to be processed before
i propose that there were a way to prepare any kind of image (memory, asset, network, file, or from ImageProvider) to be drawn

reproducible sample https://github.com/nt4f04unds-archive/issues/tree/flutter_75750

use case

there might be cases when someone would like to do such thing

as possible example (i know it's weird way to handle things as it's not effective, but still) - we call takePicture() in camera plugin and we don't want a black frame to appear whilst the image is processing after Image.memory is constructed, instead we would like to somehow prepare the image to be painted and only then show it