[Interest] QML: non scaled image strange issue under Linux

Roland Hughes roland at logikalsolutions.com
Sat Jul 23 12:50:31 CEST 2022

On 7/23/22 05:00, Alexander Dyagilev wrote:
> I'm generating image (QR code) using QML image provider. Show it using
> Image control using actual size (i.e. width height are not specified,
> and I also set fill mode to Pad).
> Windows and macOS - works fine.
> Linux (Ubuntu) - it's shown blurred. If I set smooth property to false -
> it's shown as expected.
> Is it a bug? In docs it's stated that smooth has no effect if image is
> not scaled.
> Qt 5.12.12.
Just drawing a line from point A to point B without looking at the code, 
the Ubuntu/Linux logic path appears to always execute the scale logic 
even when the scale factor is 100%. I suggest you file a bug which will 
probably be reclassified as a "performance enhancement request" to skip 
image scaling when the scale factor is 100%

Roland Hughes, President
Logikal Solutions


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