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  1. Bug #1580792
  2. Comment #8

Comment 8 for bug 1580792

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Gerry Boland (gerboland) wrote : Re: Unity8 on Intel Atoms performs poorly

Googling around I found this:
https://bugs.freedesktop.org/show_bug.cgi?id=87478
which puts some blame on Qt's shaders for distance field text rendering.

Happier news is that Qt has options to either use a lower quality distance field rendering approach (fewer ALU instructions) or disabling distance field approach completely.

Env vars to play with (I don't have the hardware to test with):
QSG_DISTANCEFIELD_ANTIALIASING=subpixel/subpixel-lowq/gray (subpixel the default I believe)
QML_DISABLE_DISTANCEFIELD=1

I would also suspect the UbuntuShape is guilty, we probably need a low quality version of it too.