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// Copyright 2012 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/debug_rect_history.h"
#include "cc/damage_tracker.h"
#include "cc/layer_impl.h"
#include "cc/layer_tree_host.h"
#include "cc/math_util.h"
namespace cc {
// static
scoped_ptr<DebugRectHistory> DebugRectHistory::Create() {
return make_scoped_ptr(new DebugRectHistory());
}
DebugRectHistory::DebugRectHistory() {}
DebugRectHistory::~DebugRectHistory() {}
void DebugRectHistory::SaveDebugRectsForCurrentFrame(
LayerImpl* root_layer,
const std::vector<LayerImpl*>& render_surface_layer_list,
const std::vector<gfx::Rect>& occluding_screen_space_rects,
const std::vector<gfx::Rect>& non_occluding_screen_space_rects,
const LayerTreeDebugState& debug_state) {
// For now, clear all rects from previous frames. In the future we may want to
// store all debug rects for a history of many frames.
debug_rects_.clear();
if (debug_state.showPaintRects)
SavePaintRects(root_layer);
if (debug_state.showPropertyChangedRects)
SavePropertyChangedRects(render_surface_layer_list);
if (debug_state.showSurfaceDamageRects)
SaveSurfaceDamageRects(render_surface_layer_list);
if (debug_state.showScreenSpaceRects)
SaveScreenSpaceRects(render_surface_layer_list);
if (debug_state.showOccludingRects)
SaveOccludingRects(occluding_screen_space_rects);
if (debug_state.showNonOccludingRects)
SaveNonOccludingRects(non_occluding_screen_space_rects);
}
void DebugRectHistory::SavePaintRects(LayerImpl* layer) {
// We would like to visualize where any layer's paint rect (update rect) has
// changed, regardless of whether this layer is skipped for actual drawing or
// not. Therefore we traverse recursively over all layers, not just the render
// surface list.
if (!layer->update_rect().IsEmpty() && layer->DrawsContent()) {
float width_scale = layer->content_bounds().width() /
static_cast<float>(layer->bounds().width());
float height_scale = layer->content_bounds().height() /
static_cast<float>(layer->bounds().height());
gfx::RectF update_content_rect =
gfx::ScaleRect(layer->update_rect(), width_scale, height_scale);
debug_rects_.push_back(
DebugRect(PAINT_RECT_TYPE,
MathUtil::mapClippedRect(layer->screen_space_transform(),
update_content_rect)));
}
for (unsigned i = 0; i < layer->children().size(); ++i)
SavePaintRects(layer->children()[i]);
}
void DebugRectHistory::SavePropertyChangedRects(
const std::vector<LayerImpl*>& render_surface_layer_list) {
for (int surface_index = render_surface_layer_list.size() - 1;
surface_index >= 0;
--surface_index) {
LayerImpl* render_surface_layer = render_surface_layer_list[surface_index];
RenderSurfaceImpl* render_surface = render_surface_layer->render_surface();
DCHECK(render_surface);
const std::vector<LayerImpl*>& layer_list = render_surface->layer_list();
for (unsigned layer_index = 0;
layer_index < layer_list.size();
++layer_index) {
LayerImpl* layer = layer_list[layer_index];
if (LayerTreeHostCommon::renderSurfaceContributesToTarget<LayerImpl>(
layer, render_surface_layer->id()))
continue;
if (layer->LayerIsAlwaysDamaged())
continue;
if (layer->LayerPropertyChanged() ||
layer->LayerSurfacePropertyChanged()) {
debug_rects_.push_back(
DebugRect(PROPERTY_CHANGED_RECT_TYPE,
MathUtil::mapClippedRect(
layer->screen_space_transform(),
gfx::RectF(gfx::PointF(), layer->content_bounds()))));
}
}
}
}
void DebugRectHistory::SaveSurfaceDamageRects(
const std::vector<LayerImpl*>& render_surface_layer_list) {
for (int surface_index = render_surface_layer_list.size() - 1;
surface_index >= 0;
--surface_index) {
LayerImpl* render_surface_layer = render_surface_layer_list[surface_index];
RenderSurfaceImpl* render_surface = render_surface_layer->render_surface();
DCHECK(render_surface);
debug_rects_.push_back(DebugRect(
SURFACE_DAMAGE_RECT_TYPE,
MathUtil::mapClippedRect(
render_surface->screen_space_transform(),
render_surface->damage_tracker()->current_damage_rect())));
}
}
void DebugRectHistory::SaveScreenSpaceRects(
const std::vector<LayerImpl*>& render_surface_layer_list) {
for (int surface_index = render_surface_layer_list.size() - 1;
surface_index >= 0;
--surface_index) {
LayerImpl* render_surface_layer = render_surface_layer_list[surface_index];
RenderSurfaceImpl* render_surface = render_surface_layer->render_surface();
DCHECK(render_surface);
debug_rects_.push_back(DebugRect(
SCREEN_SPACE_RECT_TYPE,
MathUtil::mapClippedRect(render_surface->screen_space_transform(),
render_surface->content_rect())));
if (render_surface_layer->replica_layer()) {
debug_rects_.push_back(
DebugRect(REPLICA_SCREEN_SPACE_RECT_TYPE,
MathUtil::mapClippedRect(
render_surface->replica_screen_space_transform(),
render_surface->content_rect())));
}
}
}
void DebugRectHistory::SaveOccludingRects(
const std::vector<gfx::Rect>& occluding_rects) {
for (size_t i = 0; i < occluding_rects.size(); ++i)
debug_rects_.push_back(DebugRect(OCCLUDING_RECT_TYPE, occluding_rects[i]));
}
void DebugRectHistory::SaveNonOccludingRects(
const std::vector<gfx::Rect>& non_occluding_rects) {
for (size_t i = 0; i < non_occluding_rects.size(); ++i) {
debug_rects_.push_back(
DebugRect(NONOCCLUDING_RECT_TYPE, non_occluding_rects[i]));
}
}
} // namespace cc
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