671cc8595a
When nothing invalidates the display list between frames, push only an updated scroll state snapshot to the rendering thread instead of handing it the display list again. This is preparation for moving rendering to a separate process, where sending the display list across the process boundary on every frame would be expensive.
56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
/*
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* Copyright (c) 2025-2026, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Noncopyable.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/Queue.h>
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#include <AK/Variant.h>
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#include <LibGfx/SharedImage.h>
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#include <LibSync/ConditionVariable.h>
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#include <LibThreading/Forward.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/Page/Page.h>
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namespace Web::HTML {
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class RenderingThread {
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AK_MAKE_NONCOPYABLE(RenderingThread);
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AK_MAKE_NONMOVABLE(RenderingThread);
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class ThreadData;
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public:
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using PresentationCallback = Function<void(Gfx::IntRect const&, i32)>;
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struct PresentToUI {
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};
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struct PublishToExternalContent {
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NonnullRefPtr<Painting::ExternalContentSource> source;
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};
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using PresentationMode = Variant<PresentToUI, PublishToExternalContent>;
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explicit RenderingThread(PresentationCallback);
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~RenderingThread();
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void start(DisplayListPlayerType);
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void set_presentation_mode(PresentationMode);
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void update_display_list(NonnullRefPtr<Painting::DisplayList>, Painting::ScrollStateSnapshot&&);
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void update_scroll_state(Painting::ScrollStateSnapshot&&);
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void update_backing_stores(Gfx::IntSize, i32 front_id, i32 back_id, Function<void(i32, Gfx::SharedImage, i32, Gfx::SharedImage)>&& = {});
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u64 present_frame(Gfx::IntRect);
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void wait_for_frame(u64 frame_id);
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void request_screenshot(NonnullRefPtr<Gfx::PaintingSurface>, Function<void()>&& callback);
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void ready_to_paint();
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private:
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NonnullRefPtr<ThreadData> m_thread_data;
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RefPtr<Threading::Thread> m_thread;
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};
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}
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