116668651b
2D canvas rendering now lives in the compositor, but drawing one canvas into another still converted the source HTMLCanvasElement into a DecodedImageFrame in WebContent. That forced a compositor readback for every drawImage(canvas, ...) call before sending the destination canvas commands back to the compositor. Teach the canvas command stream to carry a DrawCanvas command that names the source canvas surface. The destination 2D context now flushes the source canvas, records that command, and immediately flushes the destination command list so the compositor copies the source surface at the drawImage call boundary. Bitmap sources continue to use DrawBitmap, and true readback APIs still read pixels explicitly.
55 lines
1.6 KiB
C++
55 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/Function.h>
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#include <AK/Noncopyable.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/RefPtr.h>
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#include <LibGfx/CanvasCommandList.h>
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#include <LibGfx/Forward.h>
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namespace Gfx {
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class CanvasCommandPlayer {
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AK_MAKE_NONCOPYABLE(CanvasCommandPlayer);
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AK_MAKE_NONMOVABLE(CanvasCommandPlayer);
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public:
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using CanvasSurfaceResolver = Function<PaintingSurface const*(u64)>;
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CanvasCommandPlayer(RefPtr<SkiaBackendContext>, IntSize, BitmapFormat, AlphaType, CanvasSurfaceResolver = {});
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~CanvasCommandPlayer();
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NonnullRefPtr<PaintingSurface> surface() const;
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void clear(Color);
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void play(CanvasCommandList const&);
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private:
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void play_command(CanvasCommands::ClearRect const&);
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void play_command(CanvasCommands::FillRect const&);
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void play_command(CanvasCommands::DrawBitmap const&);
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void play_command(CanvasCommands::DrawCanvas const&);
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void play_command(CanvasCommands::FillPath const&);
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void play_command(CanvasCommands::StrokePath const&);
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void play_command(CanvasCommands::SetTransform const&);
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void play_command(CanvasCommands::Save const&);
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void play_command(CanvasCommands::Restore const&);
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void play_command(CanvasCommands::ClipPath const&);
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void play_command(CanvasCommands::Reset const&);
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NonnullRefPtr<PaintStyle> resolve_paint_style(CanvasPaintStyle const&) const;
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NonnullRefPtr<PaintingSurface> m_surface;
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NonnullOwnPtr<PainterSkia> m_painter;
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CanvasSurfaceResolver m_canvas_surface_resolver;
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};
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}
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