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Add a Vulkan backend for Fuchsia and Android. (flutter#3282)
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| Original file line number | Diff line number | Diff line change |
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| // Copyright 2017 The Chromium 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/content_handler/software_rasterizer.h" | ||
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| #include <memory> | ||
| #include <utility> | ||
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| #include "apps/mozart/lib/skia/skia_vmo_surface.h" | ||
| #include "lib/ftl/logging.h" | ||
| #include "third_party/skia/include/core/SkCanvas.h" | ||
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| namespace flutter_runner { | ||
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| SoftwareRasterizer::SoftwareRasterizer() : compositor_context_(nullptr) {} | ||
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| SoftwareRasterizer::~SoftwareRasterizer() = default; | ||
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| void SoftwareRasterizer::SetScene(fidl::InterfaceHandle<mozart::Scene> scene) { | ||
| scene_.Bind(std::move(scene)); | ||
| buffer_producer_.reset(new mozart::BufferProducer()); | ||
| } | ||
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| void SoftwareRasterizer::Draw(std::unique_ptr<flow::LayerTree> layer_tree, | ||
| ftl::Closure callback) { | ||
| FTL_DCHECK(layer_tree); | ||
| if (!scene_) { | ||
| callback(); | ||
| return; | ||
| } | ||
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| const SkISize& frame_size = layer_tree->frame_size(); | ||
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| auto update = mozart::SceneUpdate::New(); | ||
| // TODO(abarth): Support incremental updates. | ||
| update->clear_resources = true; | ||
| update->clear_nodes = true; | ||
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| if (frame_size.isEmpty()) { | ||
| update->nodes.insert(mozart::kSceneRootNodeId, mozart::Node::New()); | ||
| // Publish the updated scene contents. | ||
| // TODO(jeffbrown): We should set the metadata's presentation_time here too. | ||
| scene_->Update(std::move(update)); | ||
| auto metadata = mozart::SceneMetadata::New(); | ||
| metadata->version = layer_tree->scene_version(); | ||
| scene_->Publish(std::move(metadata)); | ||
| callback(); | ||
| return; | ||
| } | ||
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| flow::CompositorContext::ScopedFrame frame = | ||
| compositor_context_.AcquireFrame(nullptr, nullptr); | ||
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| layer_tree->Preroll(frame); | ||
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| flow::SceneUpdateContext context(update.get(), buffer_producer_.get()); | ||
| auto root_node = mozart::Node::New(); | ||
| root_node->hit_test_behavior = mozart::HitTestBehavior::New(); | ||
| layer_tree->UpdateScene(context, root_node.get()); | ||
| update->nodes.insert(mozart::kSceneRootNodeId, std::move(root_node)); | ||
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| // Publish the updated scene contents. | ||
| // TODO(jeffbrown): We should set the metadata's presentation_time here too. | ||
| scene_->Update(std::move(update)); | ||
| auto metadata = mozart::SceneMetadata::New(); | ||
| metadata->version = layer_tree->scene_version(); | ||
| scene_->Publish(std::move(metadata)); | ||
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| // Draw the contents of the scene to a surface. | ||
| // We do this after publishing to take advantage of pipelining. | ||
| // The image buffer's fence is signalled automatically when the surface | ||
| // goes out of scope. | ||
| context.ExecutePaintTasks(frame); | ||
| buffer_producer_->Tick(); | ||
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| callback(); | ||
| } | ||
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| } // namespace flutter_runner |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| // Copyright 2017 The Chromium 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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| #ifndef FLUTTER_CONTENT_HANDLER_SOFTWARE_RASTERIZER_H_ | ||
| #define FLUTTER_CONTENT_HANDLER_SOFTWARE_RASTERIZER_H_ | ||
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| #include <memory> | ||
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| #include "apps/mozart/services/buffers/cpp/buffer_producer.h" | ||
| #include "flutter/content_handler/rasterizer.h" | ||
| #include "flutter/flow/compositor_context.h" | ||
| #include "lib/ftl/macros.h" | ||
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| namespace flutter_runner { | ||
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| class SoftwareRasterizer : public Rasterizer { | ||
| public: | ||
| SoftwareRasterizer(); | ||
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| ~SoftwareRasterizer() override; | ||
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| void SetScene(fidl::InterfaceHandle<mozart::Scene> scene) override; | ||
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| void Draw(std::unique_ptr<flow::LayerTree> layer_tree, | ||
| ftl::Closure callback) override; | ||
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| private: | ||
| mozart::ScenePtr scene_; | ||
| std::unique_ptr<mozart::BufferProducer> buffer_producer_; | ||
| flow::CompositorContext compositor_context_; | ||
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| FTL_DISALLOW_COPY_AND_ASSIGN(SoftwareRasterizer); | ||
| }; | ||
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| } // namespace flutter_runner | ||
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| #endif // FLUTTER_CONTENT_HANDLER_SOFTWARE_RASTERIZER_H_ |
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