585684 - [d2d] REFTEST TEST-UNEXPECTED-FAIL text-decoration/underline-block-propagation-2-standards.html

Status: NEW

(Core :: Graphics, defect)

Comment 1

[Jeff Muizelaar [:jrmuizel]]

The bottom left corner of the text box is different. It's not at all clear why yet. Further, PIX is being very stubborn as of late.

Comment 2

[Bas Schouten (:bas.schouten)]

(In reply to comment #1)
> The bottom left corner of the text box is different. It's not at all clear why
> yet. Further, PIX is being very stubborn as of late.

PIX appears to be partially made stubborn for me by the GPU memcpy things (what we're doing seems to be valid though :s but PIX seems to hate it). Try commenting out that optimization piece (just use normal rendering for it), it may improve your results.

Comment 3

[Jeff Muizelaar [:jrmuizel]]

So it looks like this is actually layout bug. We seem to be drawing an underline under at the bottom of the text box. If you change the text-decoration to line-through this becomes obvious. We're the only browser that does this and it seems wrong. It shows up as far back as 3.6

Comment 4

[Jeff Muizelaar [:jrmuizel]]

Attachment: An example showing the problem

Comment 5

[Joe Drew (not getting mail)]

Why does this show up only on Windows 7?

Comment 6

[Joe Drew (not getting mail)]

uh.. on Direct2D?

Comment 7

[Bas Schouten (:bas.schouten)]

We suspect it's because of something more, or less accurate in D2D rasterization. But the fundamental bug is definitely there elsewhere.

Comment 8

[Jeff Muizelaar [:jrmuizel]]

I've filed a bug against layout for the text-decoration problem (bug 586748)