(In reply to comment #175)
> Created attachment 92770 [details]
> not quite random corruption example
> 
> With the workarounds disabled, can anything be deduced from the text or
> pixmap corruption not seeming to be completely random?

It's not entirely random. What I have noticed is that one or more
vertices are corrupt. Sometimes you see the correct content but skewed,
which is what happens if you just move one of the vertices (its texture
coordinates). With two or more distorted coordinates, we can be sampling
from anywhere within the texture - which can mean that we see the wrong
glyph or a highly distorted composite of several glyphs (since all the
active glyphs are stored in a single texture).

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https://bugs.launchpad.net/bugs/1098334

Title:
  [gen4 sna] Font corruption

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