Fix canvas wpt test `path-objects/2d.path.rect.zero.4.html`
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After connecting the lines of a rectangle, a new subpath has to be created containing the rectangle's origin as the only point in the subpath.
(see step 4 of https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-rect)
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Add WebGL2 specific version strings
Updated the `VERSION` and `SHADING_LANGUAGE_VERSION` WebGL parameters to report the correct version strings when WebGL2 is in use.
See: https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.2
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cc @jdm @zakorgy @imiklos
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Add support for WebGL2 uniform matrix operations
Adds support for the `uniformMatrix[234]x[234]fv` WebGL2 functions.
See: https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.8
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Note: Similarly to #25538, some of the functions here also overlap with their WebGL 1 variant.
cc @jdm @zakorgy @imiklos
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Fix canvas wpt test ensuring there's a subpath when drawing bezier curves
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These changes will ensure there's a subpath when drawing bezier curves.
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Add support for WebGL2 uniform array operations
Adds support for the WebGL2 overloads of `uniform[1234][if]v`.
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WebGL2 adds two optional parameters for the `uniform[1234][if]v` functions to allow specifying input data ranges. However, because they have the same name and overlapping parameters, the Codegen cannot make a difference between their GL1 and 2 variants. As a workaround, I've added the new parameters to the WebGL1 side, which which isn't strictly what the spec says, but shouldn't break things either. (Note: Firefox devs also run into this issue: [[1](https://searchfox.org/mozilla-central/source/dom/webidl/WebGLRenderingContext.webidl#794), [2](https://bugzilla.mozilla.org/show_bug.cgi?id=1324543)]).
cc @jdm @zakorgy @imiklos
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Allow deletions from overflowed textinput
Allow deletions from textinput when the length is greater than the max length.
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Fix canvas wpt test "path-objects/2d.path.end.1.html"
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Put target element, form owner, and element document on scope chain of compiled events
Event listeners that are created from a function object just get whatever closure the function object had, but event listeners created from a string need a special closure that acts like they were defined inside a series of `with` statements. This now happens. The existing WPT test for it, html/webappapis/scripting/events/compile-event-handler-lexical-scopes.html, also relies on other behavior we don't have, so I added an easier version of the test that doesn't involve bubbling or capturing and doesn't check any IDL properties we don't have. This new test will eventually be redundant when we have everything else the upstream test expects.
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Add support for WebGL2 unsigned uniform operations
This adds support for the WebGL2 `uniform[1234]ui` and `uniform[1234]uiv` operations.
See: https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.8
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cc @jdm @zakorgy @imiklos
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Add support for WebGL2 `RASTERIZER_DISCARD` enum.
Add support for the `RASTERIZER_DISCARD` enum for the WebGL2 version of the `Enable`, `Disable` and `IsEnabled` functions.
See https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.2
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cc @jdm @zakorgy @imiklos
Note: The test results may depend on #25519.
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Add generic to frozen array
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https://github.com/servo/servo/pull/25467#discussion_r364575071
Depends on https://github.com/servo/servo/pull/25467
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make stepUp, stepDown, valueAsNumber, valueAsDate, and list work in HTMLInputElement
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Steppy operation of input elements now functions. A few related tests still fail because of incorrect test expectations. A couple range reftests fail on what might be correct expectations; solving that involves layout, not DOM.
Main changes here:
- str.rs now has its datetime format parsers public, with some changes to align their output with chrono::NaiveDateTime and fix a bug in milliseconds validation
- HTMLInputElement has new attributes, and code behind them for relevant concepts
- servoparser/mod.rs now has some extra code to ensure that input sanitization happens at the right moment during input element creation; the spec is non-specific about when this happens, but it has to happen somewhere and in #21952 @Eijebong had independently come to the same conclusion as me about the timing.
- Some tests are added where WPT wasn't already testing functionality I was adding; Firefox and Chrome pass them, Safari fails some in a reasonably expected way
- Lots of test metadata changed to passing
One test continues to fail because 0.1 * 6 != 0.6 and the spec is written in abstractions instead of actual floating-point numbers; other test failures are WPT bugs I've reported as such and will write fixes for soon if no one else does.
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Implement HTMLOptionElement.index
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Made list_of_options public in HTMLSelectElement so HTMLOptionElement can see it, added index-getting to HTMLOptionElement.
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Make getOwnPropertyDescriptor hold the correct value for indexed/named properties
This is towards #25036 and #25415; it could have far-reaching implications so I want to test it in isolation and see the results on the full test suite.
A few lines of code had a FIXME(#11868) despite that issue being closed, and looking for the pattern that was marked that way, I found one other unmarked instance of it. It doesn't immediately crash, and maybe it will pass some tests or fail some tests in informative ways.
EDIT: After adding an overlooked extended attribute to HTMLFormElement, this works very well indeed and seems to be worth merging!
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