a80babffb6
Canvas rendering is a major remaining path where WebContent directly owns GPU-facing drawing state. Back 2D and WebGL canvas contexts with remote Compositor transports, so WebContent talks to canvas surfaces through IPC while the Compositor owns the rasterization resources. This is a large step toward GPU sandboxing because canvas GPU work now lives behind the Compositor boundary. It also gives OffscreenCanvas the process-independent canvas plumbing that HTMLCanvasElement now uses, making worker-owned canvases possible without another WebContent-local rendering path.
31 lines
835 B
C++
31 lines
835 B
C++
/*
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* Copyright (c) 2026, 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 <AK/Optional.h>
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#include <AK/RefCounted.h>
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#include <AK/RefPtr.h>
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#include <LibGfx/Forward.h>
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#include <LibWeb/Export.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/Painting/DisplayListResourceIds.h>
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namespace Web::HTML {
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class WEB_API RemoteCanvas2DTransport : public RefCounted<RemoteCanvas2DTransport> {
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public:
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virtual ~RemoteCanvas2DTransport() = default;
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virtual bool create_context(Gfx::IntSize, bool alpha) = 0;
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virtual Optional<Painting::CanvasId> canvas_id() const = 0;
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virtual void destroy_context() = 0;
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virtual void update_commands(Gfx::CanvasCommandList const&) = 0;
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virtual RefPtr<Gfx::Bitmap> read_back_pixels(Gfx::IntRect const&) = 0;
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};
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}
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