1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
// Copyright 2011 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/trees/layer_tree_settings.h"
#include <GLES2/gl2.h>
#include <limits>
#include "base/command_line.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
namespace cc {
LayerTreeSettings::LayerTreeSettings()
: impl_side_painting(false),
raster_enabled(true),
throttle_frame_production(true),
single_thread_proxy_scheduler(true),
use_external_begin_frame_source(false),
main_frame_before_activation_enabled(false),
using_synchronous_renderer_compositor(false),
report_overscroll_only_for_scrollable_axes(false),
per_tile_painting_enabled(false),
accelerated_animation_enabled(true),
can_use_lcd_text(true),
use_distance_field_text(false),
gpu_rasterization_enabled(false),
gpu_rasterization_forced(false),
gpu_rasterization_msaa_sample_count(0),
gpu_rasterization_skewport_target_time_in_seconds(0.2f),
create_low_res_tiling(false),
scrollbar_animator(NO_ANIMATOR),
scrollbar_fade_delay_ms(0),
scrollbar_fade_resize_delay_ms(0),
scrollbar_fade_duration_ms(0),
scrollbar_show_scale_threshold(1.0f),
solid_color_scrollbar_color(SK_ColorWHITE),
timeout_and_draw_when_animation_checkerboards(true),
maximum_number_of_failed_draws_before_draw_is_forced_(3),
layer_transforms_should_scale_layer_contents(false),
layers_always_allowed_lcd_text(false),
minimum_contents_scale(0.0625f),
low_res_contents_scale_factor(0.25f),
top_controls_show_threshold(0.5f),
top_controls_hide_threshold(0.5f),
background_animation_rate(1.0),
max_partial_texture_updates(std::numeric_limits<size_t>::max()),
default_tile_size(gfx::Size(256, 256)),
max_untiled_layer_size(gfx::Size(512, 512)),
default_tile_grid_size(gfx::Size(256, 256)),
minimum_occlusion_tracking_size(gfx::Size(160, 160)),
use_pinch_virtual_viewport(false),
tiling_interest_area_viewport_multiplier(9.0f),
skewport_target_time_in_seconds(1.0f),
skewport_extrapolation_limit_in_content_pixels(2000),
max_unused_resource_memory_percentage(100),
max_memory_for_prepaint_percentage(100),
strict_layer_property_change_checking(false),
use_one_copy(false),
use_zero_copy(false),
enable_elastic_overscroll(false),
use_image_texture_target(GL_TEXTURE_2D),
ignore_root_layer_flings(false),
scheduled_raster_task_limit(32),
use_occlusion_for_tile_prioritization(false),
record_full_layer(false),
use_display_lists(false),
use_cached_picture_in_display_list(true),
verify_property_trees(false),
gather_pixel_refs(false),
use_compositor_animation_timelines(false) {
}
LayerTreeSettings::~LayerTreeSettings() {}
SchedulerSettings LayerTreeSettings::ToSchedulerSettings() const {
SchedulerSettings scheduler_settings;
scheduler_settings.use_external_begin_frame_source =
use_external_begin_frame_source;
scheduler_settings.main_frame_before_activation_enabled =
main_frame_before_activation_enabled;
scheduler_settings.impl_side_painting = impl_side_painting;
scheduler_settings.timeout_and_draw_when_animation_checkerboards =
timeout_and_draw_when_animation_checkerboards;
scheduler_settings.maximum_number_of_failed_draws_before_draw_is_forced_ =
maximum_number_of_failed_draws_before_draw_is_forced_;
scheduler_settings.using_synchronous_renderer_compositor =
using_synchronous_renderer_compositor;
scheduler_settings.throttle_frame_production = throttle_frame_production;
scheduler_settings.main_thread_should_always_be_low_latency = false;
scheduler_settings.background_frame_interval =
base::TimeDelta::FromSecondsD(1.0 / background_animation_rate);
return scheduler_settings;
}
} // namespace cc
|
