[Impeller] Decode images at nearest supported size, and then resize of necessary. #33767
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…d scale if necessary
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| /// 2. If the decoded image isn't the right target size, resize it. | ||
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| const auto scaled_image_info = image_info.makeDimensions(target_size); |
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Perhaps another TRACE_EVENT("impeller", "DecodeScale"); here?
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Expanded an existing Skia decoder test to run the Impeller decoder in the same way (fails prior to the fix). |
…resize of necessary. (flutter/engine#33767)
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Fixes flutter/flutter#104217.
The framework can request images be decoded into smaller sizes. A subset of image generators support subpixel decoding at some sizes, and a subset of those support arbitrary pixel decoding. This change makes the Impeller decoder decode into a buffer at the closest supported size by the generator, and then resizes the pixel data into a new buffer. (Which is what we do for Skia).