compositing: Support per-Painter operations and message handling #40788
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Currently, only the first painter is used for all operations in the compositor. This change modifies the compositor API and messages to allow routing the operations to the correct painter. This change is to enable support for WebViews with independent rendering contexts. Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com> Co-authored-by: Martin Robinson <mrobinson@igalia.com>
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mrobinson
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Nov 21, 2025
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
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Currently, only the first
Painteris used for all operations in theCompositor. This change modifies the compositor API and message handling to allow routing the operations to the correctPaintervia a providedPainterIdorWebViewId.This change is to enable support for per-
WebViewsRenderingContexts.Testing: This change shouldn't change behavior, so existing WPT tests should cover it.