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// Copyright 2014 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.
#include "cc/playback/display_list_recording_source.h"
#include <stdint.h>
#include <algorithm>
#include "base/numerics/safe_math.h"
#include "cc/base/histograms.h"
#include "cc/base/region.h"
#include "cc/layers/content_layer_client.h"
#include "cc/playback/display_item_list.h"
#include "cc/playback/display_list_raster_source.h"
#include "cc/proto/display_list_recording_source.pb.h"
#include "cc/proto/gfx_conversions.h"
#include "skia/ext/analysis_canvas.h"
namespace {
#ifdef NDEBUG
const bool kDefaultClearCanvasSetting = false;
#else
const bool kDefaultClearCanvasSetting = true;
#endif
DEFINE_SCOPED_UMA_HISTOGRAM_AREA_TIMER(
ScopedDisplayListRecordingSourceUpdateTimer,
"Compositing.%s.DisplayListRecordingSource.UpdateUs",
"Compositing.%s.DisplayListRecordingSource.UpdateInvalidatedAreaPerMs");
} // namespace
namespace cc {
DisplayListRecordingSource::DisplayListRecordingSource()
: slow_down_raster_scale_factor_for_debug_(0),
generate_discardable_images_metadata_(false),
requires_clear_(false),
is_solid_color_(false),
clear_canvas_with_debug_color_(kDefaultClearCanvasSetting),
solid_color_(SK_ColorTRANSPARENT),
background_color_(SK_ColorTRANSPARENT),
painter_reported_memory_usage_(0) {}
DisplayListRecordingSource::~DisplayListRecordingSource() {
}
void DisplayListRecordingSource::ToProtobuf(
proto::DisplayListRecordingSource* proto) const {
RectToProto(recorded_viewport_, proto->mutable_recorded_viewport());
SizeToProto(size_, proto->mutable_size());
proto->set_slow_down_raster_scale_factor_for_debug(
slow_down_raster_scale_factor_for_debug_);
proto->set_generate_discardable_images_metadata(
generate_discardable_images_metadata_);
proto->set_requires_clear(requires_clear_);
proto->set_is_solid_color(is_solid_color_);
proto->set_clear_canvas_with_debug_color(clear_canvas_with_debug_color_);
proto->set_solid_color(static_cast<uint64_t>(solid_color_));
proto->set_background_color(static_cast<uint64_t>(background_color_));
if (display_list_)
display_list_->ToProtobuf(proto->mutable_display_list());
}
void DisplayListRecordingSource::FromProtobuf(
const proto::DisplayListRecordingSource& proto) {
recorded_viewport_ = ProtoToRect(proto.recorded_viewport());
size_ = ProtoToSize(proto.size());
slow_down_raster_scale_factor_for_debug_ =
proto.slow_down_raster_scale_factor_for_debug();
generate_discardable_images_metadata_ =
proto.generate_discardable_images_metadata();
requires_clear_ = proto.requires_clear();
is_solid_color_ = proto.is_solid_color();
clear_canvas_with_debug_color_ = proto.clear_canvas_with_debug_color();
solid_color_ = static_cast<SkColor>(proto.solid_color());
background_color_ = static_cast<SkColor>(proto.background_color());
// This might not exist if the |display_list_| of the serialized
// DisplayListRecordingSource was null, wich can happen if |Clear()| is
// called.
if (proto.has_display_list()) {
display_list_ = DisplayItemList::CreateFromProto(proto.display_list());
FinishDisplayItemListUpdate();
} else {
display_list_ = nullptr;
}
}
void DisplayListRecordingSource::UpdateInvalidationForNewViewport(
const gfx::Rect& old_recorded_viewport,
const gfx::Rect& new_recorded_viewport,
Region* invalidation) {
// Invalidate newly-exposed and no-longer-exposed areas.
Region newly_exposed_region(new_recorded_viewport);
newly_exposed_region.Subtract(old_recorded_viewport);
invalidation->Union(newly_exposed_region);
Region no_longer_exposed_region(old_recorded_viewport);
no_longer_exposed_region.Subtract(new_recorded_viewport);
invalidation->Union(no_longer_exposed_region);
}
void DisplayListRecordingSource::FinishDisplayItemListUpdate() {
DetermineIfSolidColor();
display_list_->EmitTraceSnapshot();
if (generate_discardable_images_metadata_)
display_list_->GenerateDiscardableImagesMetadata();
}
bool DisplayListRecordingSource::UpdateAndExpandInvalidation(
ContentLayerClient* painter,
Region* invalidation,
const gfx::Size& layer_size,
const gfx::Rect& visible_layer_rect,
int frame_number,
RecordingMode recording_mode) {
ScopedDisplayListRecordingSourceUpdateTimer timer;
bool updated = false;
// TODO(chrishtr): delete this conditional once synchronized paint launches.
if (size_ != layer_size) {
size_ = layer_size;
updated = true;
}
gfx::Rect new_recorded_viewport = painter->PaintableRegion();
if (new_recorded_viewport != recorded_viewport_) {
UpdateInvalidationForNewViewport(recorded_viewport_, new_recorded_viewport,
invalidation);
recorded_viewport_ = new_recorded_viewport;
updated = true;
}
// Count the area that is being invalidated.
Region recorded_invalidation(*invalidation);
recorded_invalidation.Intersect(recorded_viewport_);
for (Region::Iterator it(recorded_invalidation); it.has_rect(); it.next())
timer.AddArea(it.rect().size().GetCheckedArea());
if (!updated && !invalidation->Intersects(recorded_viewport_))
return false;
ContentLayerClient::PaintingControlSetting painting_control =
ContentLayerClient::PAINTING_BEHAVIOR_NORMAL;
switch (recording_mode) {
case RECORD_NORMALLY:
// Already setup for normal recording.
break;
case RECORD_WITH_PAINTING_DISABLED:
painting_control = ContentLayerClient::DISPLAY_LIST_PAINTING_DISABLED;
break;
case RECORD_WITH_CACHING_DISABLED:
painting_control = ContentLayerClient::DISPLAY_LIST_CACHING_DISABLED;
break;
case RECORD_WITH_CONSTRUCTION_DISABLED:
painting_control = ContentLayerClient::DISPLAY_LIST_CONSTRUCTION_DISABLED;
break;
case RECORD_WITH_SUBSEQUENCE_CACHING_DISABLED:
painting_control = ContentLayerClient::SUBSEQUENCE_CACHING_DISABLED;
break;
case RECORD_WITH_SK_NULL_CANVAS:
case RECORDING_MODE_COUNT:
NOTREACHED();
}
// TODO(vmpstr): Add a slow_down_recording_scale_factor_for_debug_ to be able
// to slow down recording.
display_list_ = painter->PaintContentsToDisplayList(painting_control);
painter_reported_memory_usage_ = painter->GetApproximateUnsharedMemoryUsage();
FinishDisplayItemListUpdate();
return true;
}
gfx::Size DisplayListRecordingSource::GetSize() const {
return size_;
}
void DisplayListRecordingSource::SetEmptyBounds() {
size_ = gfx::Size();
Clear();
}
void DisplayListRecordingSource::SetSlowdownRasterScaleFactor(int factor) {
slow_down_raster_scale_factor_for_debug_ = factor;
}
void DisplayListRecordingSource::SetGenerateDiscardableImagesMetadata(
bool generate_metadata) {
generate_discardable_images_metadata_ = generate_metadata;
}
void DisplayListRecordingSource::SetBackgroundColor(SkColor background_color) {
background_color_ = background_color;
}
void DisplayListRecordingSource::SetRequiresClear(bool requires_clear) {
requires_clear_ = requires_clear;
}
bool DisplayListRecordingSource::IsSuitableForGpuRasterization() const {
// The display list needs to be created (see: UpdateAndExpandInvalidation)
// before checking for suitability. There are cases where an update will not
// create a display list (e.g., if the size is empty). We return true in these
// cases because the gpu suitability bit sticks false.
return !display_list_ || display_list_->IsSuitableForGpuRasterization();
}
scoped_refptr<DisplayListRasterSource>
DisplayListRecordingSource::CreateRasterSource(bool can_use_lcd_text) const {
return scoped_refptr<DisplayListRasterSource>(
DisplayListRasterSource::CreateFromDisplayListRecordingSource(
this, can_use_lcd_text));
}
void DisplayListRecordingSource::DetermineIfSolidColor() {
DCHECK(display_list_);
is_solid_color_ = false;
solid_color_ = SK_ColorTRANSPARENT;
if (!display_list_->ShouldBeAnalyzedForSolidColor())
return;
gfx::Size layer_size = GetSize();
skia::AnalysisCanvas canvas(layer_size.width(), layer_size.height());
display_list_->Raster(&canvas, nullptr, gfx::Rect(), 1.f);
is_solid_color_ = canvas.GetColorIfSolid(&solid_color_);
}
void DisplayListRecordingSource::Clear() {
recorded_viewport_ = gfx::Rect();
display_list_ = nullptr;
painter_reported_memory_usage_ = 0;
is_solid_color_ = false;
}
} // namespace cc
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