LibWeb+LibGfx: Use GPU backend for <canvas> #1532
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ADKaster
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Sep 25, 2024
ADKaster
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Sep 25, 2024
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This is a fix to the vcpkg package itself to fix some exported symbols.
This is required to share GPU context creation code between display list player, which resides in LibWeb, and PainterSkia, which handles <canvas> painting.
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Adds a new class in LibGfx that represents GPU-accelerated surface and will be used for both <canvas> and page rendering (display list player).
Since the Metal context is currently only used by LibGfx, it could be moved there to avoid having Metal as a dependency for everything that uses LibCore.
Since the Vulkan context is currently only used by LibGfx, it could be moved there to avoid having Vulkan as a dependency for everything that uses LibCore.
This is implemented by using a GPU-accelerated surface for <canvas> when a GPU context is available. A side effect of this change is that all canvas modifications have to be performed through Gfx::Painter, and whenever its content has to be accessed, we need to take a snapshot of the corresponding GPU surface. A new DrawPaintingSurface display list command is introduced to allow cheap blitting of canvas content without having to read GPU surface content into RAM.
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This is implemented by using a GPU-accelerated surface for when
a GPU context is available.
A side effect of this change is that all canvas modifications have to be
performed through Gfx::Painter, and whenever its content has to be
accessed, we need to take a snapshot of the corresponding GPU surface.
A new DrawPaintingSurface display list command is introduced to allow
cheap blitting of canvas content without having to read GPU surface
content into RAM.This is a fix to the vcpkg package itself to fix some exported symbols.
This change depends on #1528 so I am marking it as a draft until it's merged.