mach: Fail properly if we can't find the path for OSMesa or GLAPI.
Currently we check `if not (osmesa_path and glapi_path)` after using
`path.join`. It seems we actually want to check whether
`find_dep_path_newest` returns something, because if calls to that
function fail, we'll instead get an error from `path.join` about
`NoneType` not having attribute `endswith` (it expects a string), which
preempts this check.
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Fix warn stable_features
struct_field_attributes has been stable since 1.20.0. Attribute no longer needed.
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Fix incremental layout bugs for absolute and cleared elements
Fixes#17307. <del>There were two underlying bugs:</del>
* <del>Nodes were not marked dirty when their style attribute changed.</del>
* BaseFlow flags set during flow construction could get out of sync with the element's style if repair_style was called.
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stylo: Implement -moz-prefixed gradients
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Implement paint worklets rendering context
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Implement the rendering context for paint worklets. They really paint things now!
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Implement :visited support for lazy pseudo-elements
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Update Visual Studio instructions in Readme
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stylo: Fix font-variant-alternates property
`font-variant-alternates` was just parsing values as keywords. But many of the alternates are actually functions instead of keywords. This fixes that.
r=emilio on bugzilla side.
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Bug 1368302 - stylo: possible stack overflow when processing very dee…
…p DOM. r=bholley.
Whilst working with variants of the bloom-basic test for Stylo perf
profiling, I noticed that it is easy to cause Firefox to segfault on DOMs
with a depth of more than about 1500 elements. This fix limits the use of
tail recursion to 150 elements. This isn't externally observable to content
-- we're still completely correct, just not using tail recursion any more.
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Implemented paint worklets invoking worklet scripts.
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Implemented the "invoke a paint callback" functionality of paint worklets (https://drafts.css-houdini.org/css-paint-api/#invoke-a-paint-callback).
This PR does not implement the 2D rendering context, and just generates a placeholder image.
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Backed out changeset 90036d4d378e (bug 17564) because gecko-side patch caused bustage on Windows. r=backout on a CLOSED TREE
Backed out changeset 90036d4d378e (bug 17564) because gecko-side patch caused bustage on Windows. r=backout on a CLOSED TREE
Backs out https://github.com/servo/servo/pull/17564
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Whilst working with variants of the bloom-basic test for Stylo perf
profiling, I noticed that it is easy to cause Firefox to segfault on DOMs
with a depth of more than about 1500 elements. This fix limits the use of
tail recursion to 150 elements. This isn't externally observable to content
-- we're still completely correct, just not using tail recursion any more.
