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Compute the necessary texture resolution using more accurate scaling information provided by Mozart scene node metrics events instead of the device pixel ratio provided by the Mozart view properties (which we might remove in the future). This allows us to allocate smaller textures when a Flutter view is being scaled down.
36 lines
1005 B
C++
36 lines
1005 B
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_CONTENT_HANDLER_RASTERIZER_H_
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#define FLUTTER_CONTENT_HANDLER_RASTERIZER_H_
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#include <memory>
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#include "apps/mozart/services/scene/session.fidl.h"
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#include "flutter/flow/layers/layer_tree.h"
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#include "lib/ftl/functional/closure.h"
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#include "lib/ftl/macros.h"
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#include "magenta/system/ulib/mx/include/mx/eventpair.h"
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namespace flutter_runner {
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class Rasterizer {
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public:
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virtual ~Rasterizer();
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static std::unique_ptr<Rasterizer> Create();
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virtual void SetScene(
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fidl::InterfaceHandle<mozart2::SceneManager> scene_manager,
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mx::eventpair import_token,
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ftl::Closure metrics_changed_callback) = 0;
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virtual void Draw(std::unique_ptr<flow::LayerTree> layer_tree,
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ftl::Closure callback) = 0;
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};
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} // namespace flutter_runner
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#endif // FLUTTER_CONTENT_HANDLER_RASTERIZER_H_
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