libservo: Expose an OffscreenRenderingContext and use it for servoshell (#35465)

Create a new `RenderingContext` which is used to render to a
`SurfmanRenderingContext`-related offscreen buffer. This allows having a
temporary place to render Servo and then blitting the results to a
subsection of the parent `RenderingContext`.

The goal with this change is to remove the details of how servoshell
renders from the `Compositor` and prepare for the compositor-per-WebView
world.


Co-authred-by: Ngo Iok Ui (Wu Yu Wei) <yuweiwu@pm.me>

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Mukilan Thiyagarajan <mukilan@igalia.com>
This commit is contained in:
Martin Robinson 2025-02-17 09:35:05 +01:00 committed by GitHub
parent d466688526
commit 6dce329acc
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15 changed files with 655 additions and 608 deletions

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@ -36,6 +36,7 @@ script_traits = { workspace = true }
servo_config = { path = "../config" }
servo_geometry = { path = "../geometry" }
style_traits = { workspace = true }
surfman = { workspace = true }
tracing = { workspace = true, optional = true }
webrender = { workspace = true }
webrender_api = { workspace = true }