[Libreoffice-bugs] [Bug 132297] Header PNG image appears in low resolution with SKIA

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=132297

V Stuart Foote <vstuart.foote at utsa.edu> changed:

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--- Comment #2 from V Stuart Foote <vstuart.foote at utsa.edu> ---
Created attachment 159796
  --> https://bugs.documentfoundation.org/attachment.cgi?id=159796&action=edit
rendering comparisons

Confirming the visible artifacts in down sampling the PNG artwork when inserted
into page header--comparing OpenGL to Skia / Raster or Vulkan rendering

When inserted to header, the image looks to be scaled at about 35% to fit.

But, as shown in the attached screen clip--Skia rendering (Vulkan or Raster)
does no better nor worse with rendering image details under similar scaling
~50% when brought in document at page margins.

So, either specifics of image resampling done to populate the header, or
breakdown in resampling at greater reduction for the Skia rendering.  I didn't
hunt for it in the source--but I'd suspect it is unique to the header/footer
image handling.

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