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// 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"
#include "ui/gfx/buffer_types.h"
namespace cc {
LayerSettings::LayerSettings() : use_compositor_animation_timelines(false) {
}
LayerSettings::~LayerSettings() {
}
LayerTreeSettings::LayerTreeSettings()
: single_thread_proxy_scheduler(true),
use_external_begin_frame_source(false),
main_frame_before_activation_enabled(false),
using_synchronous_renderer_compositor(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),
solid_color_scrollbar_color(SK_ColorWHITE),
timeout_and_draw_when_animation_checkerboards(true),
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),
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)),
// 3000 pixels should give sufficient area for prepainting.
tiling_interest_area_padding(3000),
skewport_target_time_in_seconds(1.0f),
skewport_extrapolation_limit_in_content_pixels(2000),
max_memory_for_prepaint_percentage(100),
strict_layer_property_change_checking(false),
use_zero_copy(false),
use_persistent_map_for_gpu_memory_buffers(false),
enable_elastic_overscroll(false),
use_image_texture_targets(
static_cast<size_t>(gfx::BufferFormat::LAST) + 1,
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),
verify_property_trees(false),
gather_pixel_refs(false),
use_compositor_animation_timelines(false),
invert_viewport_scroll_order(false),
wait_for_beginframe_interval(true),
max_staging_buffer_usage_in_bytes(32 * 1024 * 1024) {}
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.timeout_and_draw_when_animation_checkerboards =
timeout_and_draw_when_animation_checkerboards;
scheduler_settings.using_synchronous_renderer_compositor =
using_synchronous_renderer_compositor;
scheduler_settings.throttle_frame_production = wait_for_beginframe_interval;
scheduler_settings.background_frame_interval =
base::TimeDelta::FromSecondsD(1.0 / background_animation_rate);
return scheduler_settings;
}
} // namespace cc
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