Add support of the ImageBitmapRenderingContext as "bitmaprenderer"
canvas context mode to RenderingContext/OffscreenRenderingContext
https://html.spec.whatwg.org/multipage/#imagebitmaprenderingcontext
It is initial implementation with public interface API but without
any display presentation support for HTMLCanvasElement.
Testing: Improvements in the following tests:
-
html/canvas/element/manual/imagebitmap/createImageBitmap-origin.sub.html
- html/canvas/offscreen/manual/text/canvas.2d.offscreen*
-
html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.nocrash.html
- imagebitmap-renderingcontext/*
Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>
Follow the specification and make OffscreenCanvas objects are
transferable,
but not in case if there are a weak reference to placeholder canvas
element.
To handle it properly need to implement dedicated frame
provider/dispatcher
between canvas element (script thread) and offscreen canvas (dedicated
worker thread).
https://html.spec.whatwg.org/multipage/#the-offscreencanvas-interface:transferable-objects
Testing: Improvements in the following tests
-
html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.detachedcanvas.html
-
html/canvas/offscreen/manual/convert-to-blob/offscreencanvas.convert.to.blob*
-
html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer*
-
html/infrastructure/safe-passing-of-structured-data/transfer-errors.window.js
Part of #24276
Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>
Follow the HTML speficication and add missing 'transferToImageBitmap'
method to OffscreenCanvas interface.
https://html.spec.whatwg.org/multipage/#dom-offscreencanvas-transfertoimagebitmap
Testing: Improvements in the following tests
- html/canvas/offscreen/compositing/2d.composite.grid*
- html/canvas/offscreen/fill-and-stroke-styles/2d.gradient*
- html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas*
- html/canvas/offscreen/reset/2d.reset*
- html/canvas/offscreen/text/2d.text*
Fixes (partially): #34111
Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>
Follow the HTML speficication and add missing 'convertToBlob' method
to OffscreenCanvas interface.
https://html.spec.whatwg.org/multipage/#dom-offscreencanvas-converttoblob
Testing: Improvements in the following tests
-
html/canvas/offscreen/manual/convert-to-blob/offscreencanvas.convert.to.blob*
-
html/canvas/offscreen/manual/wide-gamut-canvas/2d.color.space.p3.convertToBlobp3.canvas.html
Fixes: #24272
Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>
