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LibWeb: Make BackingStore atomic ref-counted

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This is required to make sure rendering thread will keep backing stores
alive in case backing stores reallocation happens during rasterization.

Fixes https://github.com/LadybirdBrowser/ladybird/issues/4164
This commit is contained in:
Aliaksandr Kalenik
2025-04-01 01:44:35 +02:00
committed by Alexander Kalenik
parent a0bb31f7a0
commit e33174fca1
Notes: github-actions[bot] 2025-04-01 01:06:13 +00:00 
Author: https://github.com/kalenikaliaksandr
Commit: https://github.com/LadybirdBrowser/ladybird/commit/e33174fca1b
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4167
6 changed files with 28 additions and 17 deletions
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2
Libraries/LibWeb/HTML/TraversableNavigable.cpp
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@@ -1414,7 +1414,7 @@ NonnullRefPtr<Gfx::PaintingSurface> TraversableNavigable::painting_surface_for_b
#ifdef USE_VULKAN
// Vulkan: Try to create an accelerated surface.
new_surface = Gfx::PaintingSurface::create_with_size(m_skia_backend_context, backing_store.size(), Gfx::BitmapFormat::BGRA8888, Gfx::AlphaType::Premultiplied);
new_surface->on_flush = [&bitmap = bitmap](auto& surface) { surface.read_into_bitmap(bitmap); };
new_surface->on_flush = [backing_store = static_cast<NonnullRefPtr<Painting::BackingStore>>(backing_store)](auto& surface) { surface.read_into_bitmap(backing_store->bitmap()); };
#endif
#ifdef AK_OS_MACOS
// macOS: Wrap an IOSurface if available.