Aliaksandr Kalenik 24e2c402f5 LibWeb+WebContent: Move display list rasterization off the main thread ...

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.

2025-03-31 15:58:15 +01:00

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