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This is part of a larger effort to expose the difference between GrDirectContext, which runs on the GPU thread and can directly perform operations like uploading textures, and GrRecordingContext, which can only queue up work to be delivered to the GrDirectContext later.
77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
// Copyright 2013 The Flutter 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_SHELL_COMMON_SHELL_IO_MANAGER_H_
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#define FLUTTER_SHELL_COMMON_SHELL_IO_MANAGER_H_
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#include <memory>
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#include "flutter/flow/skia_gpu_object.h"
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#include "flutter/fml/macros.h"
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#include "flutter/fml/memory/weak_ptr.h"
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#include "flutter/lib/ui/io_manager.h"
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#include "third_party/skia/include/gpu/GrDirectContext.h"
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namespace flutter {
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class ShellIOManager final : public IOManager {
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public:
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// Convenience methods for platforms to create a GrDirectContext used to
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// supply to the IOManager. The platforms may create the context themselves if
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// they so desire.
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static sk_sp<GrDirectContext> CreateCompatibleResourceLoadingContext(
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GrBackend backend,
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sk_sp<const GrGLInterface> gl_interface);
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ShellIOManager(sk_sp<GrDirectContext> resource_context,
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std::shared_ptr<fml::SyncSwitch> is_gpu_disabled_sync_switch,
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fml::RefPtr<fml::TaskRunner> unref_queue_task_runner);
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~ShellIOManager() override;
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// This method should be called when a resource_context first becomes
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// available. It is safe to call multiple times, and will only update
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// the held resource context if it has not already been set.
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void NotifyResourceContextAvailable(sk_sp<GrDirectContext> resource_context);
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// This method should be called if you want to force the IOManager to
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// update its resource context reference. It should not be called
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// if there are any Dart objects that have a reference to the old
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// resource context, but may be called if the Dart VM is restarted.
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void UpdateResourceContext(sk_sp<GrDirectContext> resource_context);
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fml::WeakPtr<ShellIOManager> GetWeakPtr();
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// |IOManager|
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fml::WeakPtr<IOManager> GetWeakIOManager() const override;
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// |IOManager|
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fml::WeakPtr<GrDirectContext> GetResourceContext() const override;
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// |IOManager|
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fml::RefPtr<flutter::SkiaUnrefQueue> GetSkiaUnrefQueue() const override;
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// |IOManager|
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std::shared_ptr<fml::SyncSwitch> GetIsGpuDisabledSyncSwitch() override;
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private:
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// Resource context management.
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sk_sp<GrDirectContext> resource_context_;
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std::unique_ptr<fml::WeakPtrFactory<GrDirectContext>>
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resource_context_weak_factory_;
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// Unref queue management.
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fml::RefPtr<flutter::SkiaUnrefQueue> unref_queue_;
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fml::WeakPtrFactory<ShellIOManager> weak_factory_;
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std::shared_ptr<fml::SyncSwitch> is_gpu_disabled_sync_switch_;
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FML_DISALLOW_COPY_AND_ASSIGN(ShellIOManager);
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};
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} // namespace flutter
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#endif // FLUTTER_SHELL_COMMON_SHELL_IO_MANAGER_H_
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