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58e84c8bf0
* Re-land "Support multiple shells in a single process. (#4932)" This reverts commit 723c7d01439da4261bc836075fb55651ce9e7f03.
77 lines
2.5 KiB
C++
77 lines
2.5 KiB
C++
// Copyright 2015 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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#include "flutter/flow/layers/layer_tree.h"
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#include "flutter/flow/layers/layer.h"
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#include "flutter/glue/trace_event.h"
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namespace flow {
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LayerTree::LayerTree()
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: frame_size_{},
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rasterizer_tracing_threshold_(0),
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checkerboard_raster_cache_images_(false),
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checkerboard_offscreen_layers_(false) {}
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LayerTree::~LayerTree() = default;
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void LayerTree::Preroll(CompositorContext::ScopedFrame& frame,
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bool ignore_raster_cache) {
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TRACE_EVENT0("flutter", "LayerTree::Preroll");
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SkColorSpace* color_space =
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frame.canvas() ? frame.canvas()->imageInfo().colorSpace() : nullptr;
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frame.context().raster_cache().SetCheckboardCacheImages(
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checkerboard_raster_cache_images_);
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Layer::PrerollContext context = {
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ignore_raster_cache ? nullptr : &frame.context().raster_cache(),
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frame.gr_context(),
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color_space,
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SkRect::MakeEmpty(),
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};
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root_layer_->Preroll(&context, SkMatrix::I());
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}
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#if defined(OS_FUCHSIA)
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void LayerTree::UpdateScene(SceneUpdateContext& context,
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scenic_lib::ContainerNode& container) {
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TRACE_EVENT0("flutter", "LayerTree::UpdateScene");
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const auto& metrics = context.metrics();
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SceneUpdateContext::Transform transform(context, // context
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1.0f / metrics->scale_x, // X
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1.0f / metrics->scale_y, // Y
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1.0f / metrics->scale_z // Z
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);
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SceneUpdateContext::Frame frame(
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context,
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SkRRect::MakeRect(
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SkRect::MakeWH(frame_size_.width(), frame_size_.height())),
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SK_ColorTRANSPARENT, 0.f);
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if (root_layer_->needs_system_composite()) {
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root_layer_->UpdateScene(context);
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}
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if (root_layer_->needs_painting()) {
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frame.AddPaintedLayer(root_layer_.get());
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}
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container.AddChild(transform.entity_node());
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}
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#endif
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void LayerTree::Paint(CompositorContext::ScopedFrame& frame) const {
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Layer::PaintContext context = {
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*frame.canvas(), //
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frame.context().frame_time(), //
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frame.context().engine_time(), //
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frame.context().texture_registry(), //
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checkerboard_offscreen_layers_ //
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};
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TRACE_EVENT0("flutter", "LayerTree::Paint");
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if (root_layer_->needs_painting())
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root_layer_->Paint(context);
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}
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} // namespace flow
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