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8ee1910ca9
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.
69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
// Copyright 2017 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_SESSION_CONNECTION_H_
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#define FLUTTER_CONTENT_HANDLER_SESSION_CONNECTION_H_
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#include "apps/mozart/lib/scene/client/resources.h"
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#include "apps/mozart/lib/scene/client/session.h"
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#include "flutter/common/threads.h"
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#include "flutter/content_handler/vulkan_surface_producer.h"
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#include "flutter/flow/compositor_context.h"
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#include "flutter/flow/scene_update_context.h"
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#include "lib/fidl/cpp/bindings/interface_handle.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 SessionConnection {
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public:
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SessionConnection(mozart2::SceneManagerPtr scene_manager,
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mx::eventpair import_token);
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~SessionConnection();
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bool has_metrics() const { return scene_update_context_.has_metrics(); }
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void set_metrics_changed_callback(ftl::Closure callback) {
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metrics_changed_callback_ = std::move(callback);
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}
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flow::SceneUpdateContext& scene_update_context() {
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return scene_update_context_;
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}
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mozart::client::ImportNode& root_node() {
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ASSERT_IS_GPU_THREAD;
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return root_node_;
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}
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void Present(flow::CompositorContext::ScopedFrame& frame,
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ftl::Closure on_present_callback);
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private:
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mozart::client::Session session_;
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mozart::client::ImportNode root_node_;
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mozart::client::Session::PresentCallback present_callback_;
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ftl::Closure pending_on_present_callback_;
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std::unique_ptr<VulkanSurfaceProducer> surface_producer_;
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flow::SceneUpdateContext scene_update_context_;
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ftl::Closure metrics_changed_callback_;
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void OnSessionError();
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void OnSessionEvents(uint64_t presentation_time,
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fidl::Array<mozart2::EventPtr> events);
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void EnqueueClearOps();
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void OnPresent(mozart2::PresentationInfoPtr info);
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FTL_DISALLOW_COPY_AND_ASSIGN(SessionConnection);
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};
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} // namespace flutter_runner
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#endif // FLUTTER_CONTENT_HANDLER_SESSION_CONNECTION_H_
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