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LibWeb+WebContent: Move display list rasterization off the main thread

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The display list is an immutable data structure, so once it's created,
rasterization can be moved to a separate thread. This allows more room
for performing other tasks between processing HTML rendering tasks.

This change makes PaintingSurface, ImmutableBitmap, and GlyphRun atomic
ref-counted, as they are shared between the main and rendering threads
by being included in the display list.
This commit is contained in:
Aliaksandr Kalenik 2025-02-25 04:07:53 +01:00 • committed by Alexander Kalenik
commit 24e2c402f5
Notes: github-actions[bot] 2025-03-31 14:59:11 +00:00
16 changed files with 180 additions and 42 deletions
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2
Services/WebContent/PageClient.h
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@ -48,7 +48,7 @@ public:
virtual void paint_next_frame() override;
virtual void process_screenshot_requests() override;
virtual void paint(Web::DevicePixelRect const& content_rect, Web::Painting::BackingStore&, Web::PaintOptions = {}) override;
virtual void start_display_list_rendering(Web::DevicePixelRect const& content_rect, Web::Painting::BackingStore&, Web::PaintOptions, Function<void()>&& callback) override;
virtual Queue<Web::QueuedInputEvent>& input_event_queue() override;
virtual void report_finished_handling_input_event(u64 page_id, Web::EventResult event_was_handled) override;