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94c5be8e6d
We could get into a situation where the second time we rasterize a picture for an SKP, the raster cache detects that the same picture is being repeated in subsequent onscreen frames and then proceeds to rasterize the contents to an offscreen texture. This not only causes an unnecessary cache entry, but also shows the cached image in the final SKP trace (which is not what was originally displayed on screen).
42 lines
1.3 KiB
C++
42 lines
1.3 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/glue/trace_event.h"
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#include "flutter/flow/layers/layer.h"
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namespace flow {
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LayerTree::LayerTree() : scene_version_(0), rasterizer_tracing_threshold_(0) {}
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LayerTree::~LayerTree() {}
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void LayerTree::Raster(CompositorContext::ScopedFrame& frame,
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bool ignore_raster_cache) {
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{
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TRACE_EVENT0("flutter", "LayerTree::Preroll");
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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(), SkRect::MakeEmpty(),
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};
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root_layer_->Preroll(&context, SkMatrix());
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}
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{
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Layer::PaintContext context = {frame.canvas(), frame.context().frame_time(),
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frame.context().engine_time()};
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TRACE_EVENT0("flutter", "LayerTree::Paint");
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root_layer_->Paint(context);
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}
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}
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void LayerTree::UpdateScene(mojo::gfx::composition::SceneUpdate* update,
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mojo::gfx::composition::Node* container) {
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TRACE_EVENT0("flutter", "LayerTree::UpdateScene");
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root_layer_->UpdateScene(update, container);
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}
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} // namespace flow
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