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https://github.com/LadybirdBrowser/ladybird.git
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cb722ca18b
This change allows us to overlap rasterization and rendering work across threads: while the rasterization thread processes frame N, the main thread can simultaneously work on producing the display list for frame N+1.
59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
/*
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* Copyright (c) 2024, 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 <LibWeb/Painting/BackingStore.h>
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#include <WebContent/Forward.h>
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namespace WebContent {
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class BackingStoreManager {
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public:
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#ifdef AK_OS_MACOS
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static void set_browser_mach_port(Core::MachPort&&);
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#endif
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enum class WindowResizingInProgress {
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No,
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Yes
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};
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void resize_backing_stores_if_needed(WindowResizingInProgress window_resize_in_progress);
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void reallocate_backing_stores(Gfx::IntSize);
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void restart_resize_timer();
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struct BackingStore {
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i32 bitmap_id { -1 };
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Web::Painting::BackingStore* store { nullptr };
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};
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BackingStore acquire_store_for_next_frame()
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{
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BackingStore backing_store;
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backing_store.bitmap_id = m_back_bitmap_id;
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backing_store.store = m_back_store.ptr();
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swap_back_and_front();
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return backing_store;
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}
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BackingStoreManager(PageClient&);
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private:
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void swap_back_and_front();
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// FIXME: We should come up with an ownership model for this class that makes the GC-checker happy
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IGNORE_GC PageClient& m_page_client;
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i32 m_front_bitmap_id { -1 };
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i32 m_back_bitmap_id { -1 };
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RefPtr<Web::Painting::BackingStore> m_front_store;
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RefPtr<Web::Painting::BackingStore> m_back_store;
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int m_next_bitmap_id { 0 };
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RefPtr<Core::Timer> m_backing_store_shrink_timer;
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};
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}
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