compositor: Allow canvas to upload rendered contents asynchronously (#37776)

Adds epoch to each WR image op command that is sent to compositor. The
renderer now has a `FrameDelayer` data structure that is responsible for
tracking when a frame is ready to be displayed. When asking canvases to
update their rendering, they are given an optional `Epoch` which denotes
the `Document`'s canvas epoch. When all image updates for that `Epoch`
are seen in the renderer, the frame can be displayed.

Testing: Existing WPT tests
Fixes: #35733

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
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Sam 2025-08-29 12:04:41 +02:00 committed by GitHub
parent 4700149fcb
commit 8beef6c21f
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36 changed files with 452 additions and 100 deletions

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@ -18,6 +18,7 @@ tracing = ["dep:tracing"]
[dependencies]
app_units = { workspace = true }
base = { workspace = true }
bytemuck = { workspace = true, features = ["extern_crate_alloc"] }
canvas_traits = { workspace = true }
compositing_traits = { workspace = true }