f215d9bb9a
Compositor-backed canvas contexts keep their transports tied to a single Compositor connection. When that connection dies, the 2D backing storage and WebGL GL objects disappear with it, but WebContent does not surface the loss to canvas contexts or create fresh host contexts after reconnect. Track compositor loss through the WebContent connection, mark WebGL contexts lost, dispatch the standard context events, and rebuild the remote proxy when the page opts into restoration. For 2D canvas, queue the canvas context loss steps, discard the dead backing storage, and create new storage before firing contextrestored.
66 lines
2.7 KiB
C++
66 lines
2.7 KiB
C++
/*
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* Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
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* Copyright (c) 2024, 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 <LibGC/Ptr.h>
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#include <LibWeb/Bindings/PlatformObject.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/WebGL/Types.h>
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#include <LibWeb/WebGL/WebGLContextAttributes.h>
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#include <LibWeb/WebGL/WebGLRenderingContextOverloads.h>
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namespace Web::WebGL {
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class WebGLRenderingContext final : public WebGLRenderingContextOverloads {
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WEB_PLATFORM_OBJECT(WebGLRenderingContext, WebGLRenderingContextOverloads);
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GC_DECLARE_ALLOCATOR(WebGLRenderingContext);
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public:
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static JS::ThrowCompletionOr<GC::Ptr<WebGLRenderingContext>> create(JS::Realm&, HTML::HTMLCanvasElement& canvas_element, JS::Value options);
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virtual ~WebGLRenderingContext() override;
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void prepare_for_compositing() override;
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void did_update_canvas_content() override;
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virtual GC::Ref<HTML::HTMLCanvasElement> canvas_for_binding() const override;
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Optional<WebGLContextAttributes> get_context_attributes();
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void set_size(Gfx::IntSize const&);
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void reset_to_default_state();
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WebIDL::Long drawing_buffer_width() const;
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WebIDL::Long drawing_buffer_height() const;
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private:
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virtual void initialize(JS::Realm&) override;
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WebGLRenderingContext(JS::Realm&, HTML::HTMLCanvasElement&, NonnullOwnPtr<WebGLContextProxy> context, WebGLContextAttributes context_creation_parameters, WebGLContextAttributes actual_context_parameters);
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virtual void visit_edges(Cell::Visitor&) override;
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virtual bool reestablish_remote_context() override;
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GC::Ref<HTML::HTMLCanvasElement> m_canvas_element;
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// https://www.khronos.org/registry/webgl/specs/latest/1.0/#context-creation-parameters
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// Each WebGLRenderingContext has context creation parameters, set upon creation, in a WebGLContextAttributes object.
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WebGLContextAttributes m_context_creation_parameters {};
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// https://www.khronos.org/registry/webgl/specs/latest/1.0/#actual-context-parameters
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// Each WebGLRenderingContext has actual context parameters, set each time the drawing buffer is created, in a WebGLContextAttributes object.
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WebGLContextAttributes m_actual_context_parameters {};
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};
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bool fire_webgl_context_event(HTML::HTMLCanvasElement& canvas_element, FlyString const& type);
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void fire_webgl_context_creation_error(HTML::HTMLCanvasElement& canvas_element);
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OwnPtr<WebGLContextProxy> create_webgl_context_proxy(HTML::HTMLCanvasElement&, WebGLVersion, WebGLContextAttributes const&);
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bool restore_webgl_context_proxy(WebGLContextProxy&, HTML::HTMLCanvasElement&, WebGLVersion, WebGLContextAttributes const&);
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}
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