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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Initial implementation of GPUBindGroupLayout for WebGPU
Added WebIDL bindings for `GPUBindGroupLayout`, `GPUBindGroupLayoutDescriptor`, `GPUBindingType`, `GPUShaderStage` and `GPUBindGroupLayoutBinding` (Note: The servo's codegen doesn't like the name, because its already occupied).
Implemented the `createBindGroupLayout` function of `GPUDevice`.
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cc @kvark @jdm @zakorgy
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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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Added WebIDL bindings for `GPUBindGroupLayout`, `GPUBindGroupLayoutDescriptor`, `GPUBindingType`, `GPUShaderStage`
and `GPUBindGroupLayoutBinding` (Note: The servo's codegen doesn't like the name, because its already occupied).
Implemented the `createBindGroupLayout` function of `GPUDevice`.
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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Mitigation for #25498
This is not a complete solution:
* The alert string can get a bit mangled in some cases, but not to the point of unreadability.
* tinyfiledialogs has many codepaths that can pass strings to various different potentially-dialog-displaying executables; I do not know if some of those executables have their own unique escaping requirements.
* If some form of the same problem exists on OSX or Windows, this does not address them.
While imperfect, this is an improvement over continuing to have a known way for page authors to execute arbitrary shell script.
CI: build Linux amd64 --media-stack=dummy
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Include `--media-stack=dummy` in CI, as discussed in https://github.com/servo/servo/pull/24829.
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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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Update wgpu-core
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Update `wgpu-core` to the latest master. This version contains a fix for an issue which occurred when we exited from a WebGPU thread.
cc @kvark @jdm
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