Simplify and extend trans-stacking-context subpixel accumulation

Simplify the situations in which subpixels are accumulated, so that it
is only done for translation or identity transformation matrices. Also,
apply accumulated subpixels to more operations in PaintContext. This
fixes several pre-existing reftests and hopefully will eliminate
off-by-one errors in flaky reftests.

Fixes #10881.
This commit is contained in:
Martin Robinson 2016-08-01 13:50:04 +02:00
parent 5dac1f64c1
commit 4aabbf33d4
5 changed files with 39 additions and 34 deletions

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@ -1,4 +0,0 @@
[transform-input-017.htm]
type: reftest
expected: FAIL
bug: https://github.com/servo/servo/issues/10881

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@ -1,4 +0,0 @@
[transform-input-018.htm]
type: reftest
expected: FAIL
bug: https://github.com/servo/servo/issues/10881

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@ -1,4 +0,0 @@
[transform-input-019.htm]
type: reftest
expected:
if os == "linux": FAIL