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[Impeller] toImageSync for Impeller (flutter#36365)
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188 changes: 188 additions & 0 deletions
188
lib/ui/painting/display_list_deferred_image_gpu_impeller.cc
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| // Copyright 2013 The Flutter Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style license that can be | ||
| // found in the LICENSE file. | ||
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| #include "flutter/lib/ui/painting/display_list_deferred_image_gpu_impeller.h" | ||
| #include "display_list_deferred_image_gpu_impeller.h" | ||
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| namespace flutter { | ||
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| sk_sp<DlDeferredImageGPUImpeller> DlDeferredImageGPUImpeller::Make( | ||
| std::shared_ptr<LayerTree> layer_tree, | ||
| const SkISize& size, | ||
| fml::WeakPtr<SnapshotDelegate> snapshot_delegate, | ||
| fml::RefPtr<fml::TaskRunner> raster_task_runner) { | ||
| return sk_sp<DlDeferredImageGPUImpeller>(new DlDeferredImageGPUImpeller( | ||
| DlDeferredImageGPUImpeller::ImageWrapper::Make( | ||
| std::move(layer_tree), size, std::move(snapshot_delegate), | ||
| std::move(raster_task_runner)))); | ||
| } | ||
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| sk_sp<DlDeferredImageGPUImpeller> DlDeferredImageGPUImpeller::Make( | ||
| sk_sp<DisplayList> display_list, | ||
| const SkISize& size, | ||
| fml::WeakPtr<SnapshotDelegate> snapshot_delegate, | ||
| fml::RefPtr<fml::TaskRunner> raster_task_runner) { | ||
| return sk_sp<DlDeferredImageGPUImpeller>(new DlDeferredImageGPUImpeller( | ||
| DlDeferredImageGPUImpeller::ImageWrapper::Make( | ||
| std::move(display_list), size, std::move(snapshot_delegate), | ||
| std::move(raster_task_runner)))); | ||
| } | ||
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| DlDeferredImageGPUImpeller::DlDeferredImageGPUImpeller( | ||
| std::shared_ptr<ImageWrapper> wrapper) | ||
| : wrapper_(wrapper) {} | ||
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| // |DlImage| | ||
| DlDeferredImageGPUImpeller::~DlDeferredImageGPUImpeller() = default; | ||
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| // |DlImage| | ||
| sk_sp<SkImage> DlDeferredImageGPUImpeller::skia_image() const { | ||
| return nullptr; | ||
| }; | ||
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| // |DlImage| | ||
| std::shared_ptr<impeller::Texture> | ||
| DlDeferredImageGPUImpeller::impeller_texture() const { | ||
| if (!wrapper_) { | ||
| return nullptr; | ||
| } | ||
| return wrapper_->texture(); | ||
| } | ||
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| // |DlImage| | ||
| bool DlDeferredImageGPUImpeller::isOpaque() const { | ||
| // Impeller doesn't currently implement opaque alpha types. | ||
| return false; | ||
| } | ||
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| // |DlImage| | ||
| bool DlDeferredImageGPUImpeller::isTextureBacked() const { | ||
| return wrapper_ && wrapper_->isTextureBacked(); | ||
| } | ||
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| // |DlImage| | ||
| SkISize DlDeferredImageGPUImpeller::dimensions() const { | ||
| if (!wrapper_) { | ||
| return SkISize::MakeEmpty(); | ||
| } | ||
| return wrapper_->size(); | ||
| } | ||
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| // |DlImage| | ||
| size_t DlDeferredImageGPUImpeller::GetApproximateByteSize() const { | ||
| auto size = sizeof(DlDeferredImageGPUImpeller); | ||
| if (wrapper_) { | ||
| if (wrapper_->texture()) { | ||
| size += wrapper_->texture() | ||
| ->GetTextureDescriptor() | ||
| .GetByteSizeOfBaseMipLevel(); | ||
| } else { | ||
| size += wrapper_->size().width() * wrapper_->size().height() * 4; | ||
| } | ||
| } | ||
| return size; | ||
| } | ||
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| std::shared_ptr<DlDeferredImageGPUImpeller::ImageWrapper> | ||
| DlDeferredImageGPUImpeller::ImageWrapper::Make( | ||
| sk_sp<DisplayList> display_list, | ||
| const SkISize& size, | ||
| fml::WeakPtr<SnapshotDelegate> snapshot_delegate, | ||
| fml::RefPtr<fml::TaskRunner> raster_task_runner) { | ||
| auto wrapper = std::shared_ptr<ImageWrapper>(new ImageWrapper( | ||
| std::move(display_list), size, std::move(snapshot_delegate), | ||
| std::move(raster_task_runner))); | ||
| wrapper->SnapshotDisplayList(); | ||
| return wrapper; | ||
| } | ||
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| std::shared_ptr<DlDeferredImageGPUImpeller::ImageWrapper> | ||
| DlDeferredImageGPUImpeller::ImageWrapper::Make( | ||
| std::shared_ptr<LayerTree> layer_tree, | ||
| const SkISize& size, | ||
| fml::WeakPtr<SnapshotDelegate> snapshot_delegate, | ||
| fml::RefPtr<fml::TaskRunner> raster_task_runner) { | ||
| auto wrapper = std::shared_ptr<ImageWrapper>( | ||
| new ImageWrapper(nullptr, size, std::move(snapshot_delegate), | ||
| std::move(raster_task_runner))); | ||
| wrapper->SnapshotDisplayList(std::move(layer_tree)); | ||
| return wrapper; | ||
| } | ||
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| DlDeferredImageGPUImpeller::ImageWrapper::ImageWrapper( | ||
| sk_sp<DisplayList> display_list, | ||
| const SkISize& size, | ||
| fml::WeakPtr<SnapshotDelegate> snapshot_delegate, | ||
| fml::RefPtr<fml::TaskRunner> raster_task_runner) | ||
| : size_(size), | ||
| display_list_(std::move(display_list)), | ||
| snapshot_delegate_(std::move(snapshot_delegate)), | ||
| raster_task_runner_(std::move(raster_task_runner)) {} | ||
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| DlDeferredImageGPUImpeller::ImageWrapper::~ImageWrapper() { | ||
| fml::TaskRunner::RunNowOrPostTask( | ||
| raster_task_runner_, [id = reinterpret_cast<uintptr_t>(this), | ||
| texture_registry = std::move(texture_registry_)]() { | ||
| if (texture_registry) { | ||
| texture_registry->UnregisterContextListener(id); | ||
| } | ||
| }); | ||
| } | ||
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| void DlDeferredImageGPUImpeller::ImageWrapper::OnGrContextCreated() { | ||
| FML_DCHECK(raster_task_runner_->RunsTasksOnCurrentThread()); | ||
| SnapshotDisplayList(); | ||
| } | ||
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| void DlDeferredImageGPUImpeller::ImageWrapper::OnGrContextDestroyed() { | ||
| // Impeller textures do not have threading requirements for deletion, and | ||
| texture_.reset(); | ||
| } | ||
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| bool DlDeferredImageGPUImpeller::ImageWrapper::isTextureBacked() const { | ||
| return texture_ && texture_->IsValid(); | ||
| } | ||
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| void DlDeferredImageGPUImpeller::ImageWrapper::SnapshotDisplayList( | ||
| std::shared_ptr<LayerTree> layer_tree) { | ||
| fml::TaskRunner::RunNowOrPostTask( | ||
| raster_task_runner_, | ||
| [weak_this = weak_from_this(), layer_tree = std::move(layer_tree)] { | ||
| TRACE_EVENT0("flutter", "SnapshotDisplayList (impeller)"); | ||
| auto wrapper = weak_this.lock(); | ||
| if (!wrapper) { | ||
| return; | ||
| } | ||
| auto snapshot_delegate = wrapper->snapshot_delegate_; | ||
| if (!snapshot_delegate) { | ||
| return; | ||
| } | ||
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| wrapper->texture_registry_ = snapshot_delegate->GetTextureRegistry(); | ||
| wrapper->texture_registry_->RegisterContextListener( | ||
| reinterpret_cast<uintptr_t>(wrapper.get()), weak_this); | ||
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| if (layer_tree) { | ||
| wrapper->display_list_ = layer_tree->Flatten( | ||
| SkRect::MakeWH(wrapper->size_.width(), wrapper->size_.height()), | ||
| wrapper->texture_registry_); | ||
| } | ||
| auto snapshot = snapshot_delegate->MakeRasterSnapshot( | ||
| wrapper->display_list_, wrapper->size_); | ||
| if (!snapshot) { | ||
| std::scoped_lock lock(wrapper->error_mutex_); | ||
| wrapper->error_ = "Failed to create snapshot."; | ||
| return; | ||
| } | ||
| wrapper->texture_ = snapshot->impeller_texture(); | ||
| }); | ||
| } | ||
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| std::optional<std::string> | ||
| DlDeferredImageGPUImpeller::ImageWrapper::get_error() { | ||
| std::scoped_lock lock(error_mutex_); | ||
| return error_; | ||
| } | ||
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| } // namespace flutter |
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