Origin offset fixes
https://github.com/immersive-web/webxr/issues/567 was closed out. We were computing offset spaces of already-offset spaces incorrectly, but otherwise our math is correct. I improved our comments around this with more math, so I never have to do this math again.
Chrome's math isn't, which is why we fail some tests around this: https://bugs.chromium.org/p/chromium/issues/detail?id=1030049 . I'm planning to wait for them to fix and upstream the tests, I've already verified that we pass the corrected test.
r? @jdm
Add CRLF to encoded multipart form data
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Some (3) WPT tests were failing because they expected the body for a multipart form data response to end with a CRLF. So I updated encode_multipart_form_data to add the missing terminator.
Looking at the corresponding spec (https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#multipart%2Fform-data-encoding-algorithm) and RFC (https://tools.ietf.org/html/rfc7578), I couldn't find anything mentioned about this detail.
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Some WPT tests were failing because they expected the body for a
multipart form data response to end with a CRLF. So I updated
encode_multipart_form_data to add the missing terminator.
Add WebGPU identity management
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cc @jdm, @kvark, @zakorgy
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Implement timer-task-source, time-out service worker
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Implements the timer task-source, and folds the IPC glue-code into a single route set by the globalscope.
Also switches service worker to using a dedicated "time-out" mechanism, which previously relied on the timer mechanism(and I think didn't actually implement script timers).
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Add support for WebGL2 ReadPixels functions
Adds support for the new ReadPixels functions introduced with WebGL2 and the relevant PixelStorei parameters..
Reference: https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.10
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This is a work in progress patch, but I think it might be ready for comments. There are a few issues left:
- When the target is the pixel pack buffer, the GL function expects a byte offset as a pointer. In Sparkle the `read_pixels` functions return/work on top of arrays, so for now I've made a [workaround patch](45d8bb263d). I wonder if that's okay or should we do it somehow differently?
- When writing to the pixel pack buffer, padding bytes on the destination are properly ignored. When writing to client buffers, Sparkle `read_pixels` returns a buffer with 1 byte alignment, which I think is fine (less stuff to move between threads), but requires positioning the rows manually (see the bottom of `read_pixels_into` vs. `ReadPixels_`).
- There are some duplicated code between the array buffer and pixel pack buffer variants, eg. the detection of intersection with the framebuffer. This could be refactored, but that results in a function with `Result<Option<Rect<u32>>, WebGLError>`, which I'm not sure is readable enough to help.
- There is a duplication with the WebGL1 code. WebGL2 introduces row length, skip pixels and skip rows as pixel pack parameters which affect the ReadPixels operation. The helper functions could be moved to be usable in WebGL1, but then these new modifiers would also need to be passed as a function parameter, which is somewhat ugly (but would work). What's your opinion about this?
cc @jdm @zakorgy
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Make JS runnables for workers execute on correct event loop
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Initial implementation of WebGPU API
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- Added the WebIDL bindings for GPU and GPUadapter interfaces.
- Created a background thread for WebGPU api calls.
- Established the async communication between the background thread and the WebGPU interfaces.
- Implemented the `requesAdapter` function of `navigator.gpu`
`./mach test-tidy` reports an error due to the different `arrayvec` version used in `servo` and `webgpu`, so added it to the ignore list in `servo-tidy.toml`
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cc @jdm, cc @kvark
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Fix unloading, active BC, and clearing js runtime
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Do not set the window to be the currently active one for the windowproxy as part of `load`, as it will be done later when the document activity is set. And doing it later means that when unload runs, it is with the unloaded pipeline as the active window.
Only nullify the window proxy if it's not used by another (currently-active) window.
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Require PromiseRejectionEventInit dictionary
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Async wasm compilation event loop integration
The PR contains changes related to binding the runnable dispatching in script_runtime and is part of the Asynchronous WebAssembly Compilation fix. This is the first step in the subsequent steps mentioned in the [wiki](https://github.com/servo/servo/wiki/Asynchronous-WebAssembly-compilation-project).
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