When the canvas context mode is a placeholder then we shouldn't resize
the context.
Testing: Includes a new test
Fixes: https://github.com/servo/servo/issues/36846
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Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
All canvases return `Option<ImageKey>`.
Testing: Just refactor without behavior changes
Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
this allows us to simplify canvas element/offscreen impl to only call
CanvasContext implementations (no more match statements).
This will help with impl more offscreen canvas contextl.
Testing: WPT and rustc
Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
Each canvas context returns snapshot instead of just raw bytes. This
allows as to hold off conversions (BGRA <-> RGBA, (un)premultiply) to
when/if they are actually needed. For example when loading snapshot into
webgl we can load both RGBA and BGRA so no conversion is really needed.
Currently whole thing is designed to be able to be extend on
https://github.com/servo/ipc-channel/pull/356, to make less copies.
Hence some commented out code.
Fixes#35759
There are tests for these changes in WPT
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Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
