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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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6
Libraries/LibGfx/ImmutableBitmap.h
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@ -1,14 +1,14 @@
/*
* Copyright (c) 2023-2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
* Copyright (c) 2023-2025, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/AtomicRefCounted.h>
#include <AK/Forward.h>
#include <AK/NonnullOwnPtr.h>
#include <AK/RefCounted.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/ColorSpace.h>
#include <LibGfx/Forward.h>
@ -20,7 +20,7 @@ namespace Gfx {
struct ImmutableBitmapImpl;
class ImmutableBitmap final : public RefCounted<ImmutableBitmap> {
class ImmutableBitmap final : public AtomicRefCounted<ImmutableBitmap> {
public:
static NonnullRefPtr<ImmutableBitmap> create(NonnullRefPtr<Bitmap> bitmap, ColorSpace color_space = {});
static NonnullRefPtr<ImmutableBitmap> create(NonnullRefPtr<Bitmap> bitmap, AlphaType, ColorSpace color_space = {});