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ae311ca4da
The raster cache is critical for good performance. This enables the cache and provides a GrContext to ScopedFrame instances so the cache can be efficiently populated. Small increase in peak GPU memory usage is expected from this change. Otherwise, no change in behavior expected. Fixes https://github.com/flutter/flutter/issues/54950 Co-authored-by: David Reveman <reveman@google.com>
120 lines
3.9 KiB
C++
120 lines
3.9 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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#include "compositor_context.h"
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#include "flutter/flow/layers/layer_tree.h"
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namespace flutter_runner {
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class ScopedFrame final : public flutter::CompositorContext::ScopedFrame {
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public:
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ScopedFrame(flutter::CompositorContext& context,
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const SkMatrix& root_surface_transformation,
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bool instrumentation_enabled,
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SessionConnection& session_connection)
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: flutter::CompositorContext::ScopedFrame(
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context,
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session_connection.vulkan_surface_producer()->gr_context(),
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nullptr,
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nullptr,
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root_surface_transformation,
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instrumentation_enabled,
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true,
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nullptr),
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session_connection_(session_connection) {}
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private:
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SessionConnection& session_connection_;
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flutter::RasterStatus Raster(flutter::LayerTree& layer_tree,
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bool ignore_raster_cache) override {
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if (!session_connection_.has_metrics()) {
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return flutter::RasterStatus::kSuccess;
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}
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{
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// Preroll the Flutter layer tree. This allows Flutter to perform
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// pre-paint optimizations.
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TRACE_EVENT0("flutter", "Preroll");
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layer_tree.Preroll(*this, ignore_raster_cache);
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}
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{
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// Traverse the Flutter layer tree so that the necessary session ops to
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// represent the frame are enqueued in the underlying session.
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TRACE_EVENT0("flutter", "UpdateScene");
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layer_tree.UpdateScene(session_connection_.scene_update_context(),
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session_connection_.root_node());
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}
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{
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// Flush all pending session ops.
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TRACE_EVENT0("flutter", "SessionPresent");
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session_connection_.Present(this);
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}
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return flutter::RasterStatus::kSuccess;
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}
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FML_DISALLOW_COPY_AND_ASSIGN(ScopedFrame);
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};
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CompositorContext::CompositorContext(
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std::string debug_label,
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fuchsia::ui::views::ViewToken view_token,
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scenic::ViewRefPair view_ref_pair,
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fidl::InterfaceHandle<fuchsia::ui::scenic::Session> session,
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fml::closure session_error_callback,
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zx_handle_t vsync_event_handle)
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: debug_label_(std::move(debug_label)),
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session_connection_(
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debug_label_,
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std::move(view_token),
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std::move(view_ref_pair),
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std::move(session),
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session_error_callback,
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[](auto) {},
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vsync_event_handle) {}
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void CompositorContext::OnSessionMetricsDidChange(
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const fuchsia::ui::gfx::Metrics& metrics) {
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session_connection_.set_metrics(metrics);
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}
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void CompositorContext::OnSessionSizeChangeHint(float width_change_factor,
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float height_change_factor) {
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session_connection_.OnSessionSizeChangeHint(width_change_factor,
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height_change_factor);
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}
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void CompositorContext::OnWireframeEnabled(bool enabled) {
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session_connection_.set_enable_wireframe(enabled);
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}
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CompositorContext::~CompositorContext() = default;
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std::unique_ptr<flutter::CompositorContext::ScopedFrame>
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CompositorContext::AcquireFrame(
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GrContext* gr_context,
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SkCanvas* canvas,
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flutter::ExternalViewEmbedder* view_embedder,
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const SkMatrix& root_surface_transformation,
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bool instrumentation_enabled,
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bool surface_supports_readback,
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fml::RefPtr<fml::RasterThreadMerger> raster_thread_merger) {
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// TODO: The AcquireFrame interface is too broad and must be refactored to get
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// rid of the context and canvas arguments as those seem to be only used for
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// colorspace correctness purposes on the mobile shells.
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return std::make_unique<flutter_runner::ScopedFrame>(
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*this, //
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root_surface_transformation, //
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instrumentation_enabled, //
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session_connection_ //
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);
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}
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} // namespace flutter_runner
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