Hi All, Sharing with wider audience; In latest Gecko, with enabling of downscale during decode [1], gecko decodes image at predicted size. However the old way of non downscale during decode is still in latest gecko and it decodes images at intrinsic sizes. With both ways being enabled at the moment, what that means is gecko is generating two image sizes and apps such as gallery [2] , music, video that heavily relies on images will see memory regression.
With landing of Bug 1207355, gecko will stop using the old way to decode, helping improve memory numbers. Thanks Punam [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1045926 [2] about:memory comparison for gallery app 2.2 vs 2.5 https://bugzilla.mozilla.org/show_bug.cgi?id=1211393#c12
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