1183818 - Address test failures with XRender disabled

Status: RESOLVED DUPLICATE of bug 1180942

(Core :: Graphics, defect)

Description

[Andrew Comminos [:acomminos]]

Currently, quite a few tests fail on the tryserver with XRender disabled:

https://treeherder.mozilla.org/#/jobs?repo=try&revision=724329bdccaf

These should be addressed.

Comment 1

[Andrew Comminos [:acomminos]]

Many reftest differences appear to be caused by the fallback implementation of cairo_fill (as used by XLib) using bentley–ottmann trapezoid tessellation to fill paths, whereas cairo's image surface backend prefers its own scanline-based spans implementation first.

Comment 2

[Andrew Comminos [:acomminos]]

Attachment: Add reftest fuzziness for cairo image surfaces.

Comment 3

[Andrew Comminos [:acomminos]]

Attachment: Updated WPT reftests to accomodate XRender being off by default.

Comment 4

[Andrew Comminos [:acomminos]]

Attachment: Change test_canvas.html test to only fail with XRender.

Comment 5

[Andrew Comminos [:acomminos]]

These patches fix test failures with XRender disabled by default (there's no way AFAIK to get GfxInfo in  WPT reftest). mochitest-bc3 still fails however with:

> INFO TEST-UNEXPECTED-FAIL | image/test/browser/browser_bug666317.js | Image should initially be decoded. -

Comment 7

[u279076]

Andrew, are you still working on this?

Comment 8

[Andrew Comminos [:acomminos]]

Nope, dupe of bug 1180942.