cc/trees/layer_tree_settings.cc

   1 // Copyright 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/trees/layer_tree_settings.h"
   6
   7 #include <limits>
   8
   9 #include "base/command_line.h"
  10 #include "base/logging.h"
  11 #include "base/strings/string_number_conversions.h"
  12
  13 namespace cc {
  14
  15 LayerTreeSettings::LayerTreeSettings()
  16     : impl_side_painting(false),
  17       allow_antialiasing(true),
  18       force_antialiasing(false),
  19       throttle_frame_production(true),
  20       single_thread_proxy_scheduler(true),
  21       begin_frame_scheduling_enabled(false),
  22       main_frame_before_activation_enabled(false),
  23       using_synchronous_renderer_compositor(false),
  24       disable_hi_res_timer_tasks_on_battery(false),
  25       report_overscroll_only_for_scrollable_axes(false),
  26       per_tile_painting_enabled(false),
  27       partial_swap_enabled(false),
  28       accelerated_animation_enabled(true),
  29       can_use_lcd_text(true),
  30       use_distance_field_text(false),
  31       should_clear_root_render_pass(true),
  32       gpu_rasterization_enabled(false),
  33       gpu_rasterization_forced(false),
  34       create_low_res_tiling(false),
  35       scrollbar_animator(NoAnimator),
  36       scrollbar_fade_delay_ms(0),
  37       scrollbar_fade_resize_delay_ms(0),
  38       scrollbar_fade_duration_ms(0),
  39       solid_color_scrollbar_color(SK_ColorWHITE),
  40       calculate_top_controls_position(false),
  41       timeout_and_draw_when_animation_checkerboards(true),
  42       maximum_number_of_failed_draws_before_draw_is_forced_(3),
  43       layer_transforms_should_scale_layer_contents(false),
  44       minimum_contents_scale(0.0625f),
  45       low_res_contents_scale_factor(0.25f),
  46       top_controls_height(0.f),
  47       top_controls_show_threshold(0.5f),
  48       top_controls_hide_threshold(0.5f),
  49       refresh_rate(60.0),
  50       max_partial_texture_updates(std::numeric_limits<size_t>::max()),
  51       default_tile_size(gfx::Size(256, 256)),
  52       max_untiled_layer_size(gfx::Size(512, 512)),
  53       default_tile_grid_size(gfx::Size(256, 256)),
  54       minimum_occlusion_tracking_size(gfx::Size(160, 160)),
  55       use_pinch_zoom_scrollbars(false),
  56       use_pinch_virtual_viewport(false),
  57       // At 256x256 tiles, 128 tiles cover an area of 2048x4096 pixels.
  58       max_tiles_for_interest_area(128),
  59       skewport_target_time_multiplier(1.0f),
  60       skewport_extrapolation_limit_in_content_pixels(2000),
  61       max_unused_resource_memory_percentage(100),
  62       max_memory_for_prepaint_percentage(100),
  63       highp_threshold_min(0),
  64       strict_layer_property_change_checking(false),
  65       use_one_copy(false),
  66       use_zero_copy(false),
  67       ignore_root_layer_flings(false),
  68       use_rgba_4444_textures(false),
  69       texture_id_allocation_chunk_size(64),
  70       scheduled_raster_task_limit(32),
  71       use_occlusion_for_tile_prioritization(false),
  72       record_full_layer(false) {
  73 }
  74
  75 LayerTreeSettings::~LayerTreeSettings() {}
  76
  77 }  // namespace cc