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.
46 lines
1.6 KiB
C++
46 lines
1.6 KiB
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/ByteBuffer.h>
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#include <AK/Optional.h>
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#include <AK/RefCounted.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <LibCore/AnonymousBuffer.h>
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#include <LibGfx/DecodedImageFrame.h>
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#include <LibGfx/Forward.h>
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#include <LibGfx/ShareableBitmap.h>
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#include <LibWeb/Compositor/Types.h>
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#include <LibWeb/Export.h>
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#include <LibWeb/Painting/DisplayListResourceIds.h>
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#include <LibWeb/WebGL/Types.h>
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namespace Web::WebGL {
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class WEB_API RemoteWebGLTransport : public RefCounted<RemoteWebGLTransport> {
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public:
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virtual ~RemoteWebGLTransport() = default;
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struct CreateResult {
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bool success { false };
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Vector<String> supported_extensions;
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};
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virtual CreateResult create_context(WebGLVersion, Gfx::IntSize initial_size, bool depth, bool stencil, bool antialias) = 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 send_commands(ByteBuffer const&, Vector<Gfx::DecodedImageFrame> const& bitmaps) = 0;
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virtual void present_canvas(bool preserve_drawing_buffer) = 0;
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virtual ByteBuffer sync_call(ByteBuffer request) = 0;
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virtual ReadPixelsResult read_pixels_robust_angle(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLsizei buf_size, Core::AnonymousBuffer pixels) = 0;
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virtual void read_buffer_sub_data(GLenum target, GLintptr offset, GLintptr size, Core::AnonymousBuffer data) = 0;
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virtual Gfx::ShareableBitmap read_back_drawing_buffer(Gfx::IntRect const&) = 0;
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};
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}
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