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/string_number_conversions.h"
  12
  13 namespace cc {
  14
  15 LayerTreeSettings::LayerTreeSettings()
  16     : accelerate_painting(false),
  17       compositor_frame_message(false),
  18       impl_side_painting(false),
  19       render_vsync_enabled(true),
  20       render_vsync_notification_enabled(false),
  21       per_tile_painting_enabled(false),
  22       partial_swap_enabled(false),
  23       cache_render_pass_contents(true),
  24       right_aligned_scheduling_enabled(false),
  25       accelerated_animation_enabled(true),
  26       background_color_instead_of_checkerboard(false),
  27       show_overdraw_in_tracing(false),
  28       can_use_lcd_text(true),
  29       should_clear_root_render_pass(true),
  30       use_linear_fade_scrollbar_animator(false),
  31       solid_color_scrollbars(false),
  32       solid_color_scrollbar_color(SK_ColorWHITE),
  33       solid_color_scrollbar_thickness_dip(-1),
  34       calculate_top_controls_position(false),
  35       use_cheapness_estimator(false),
  36       use_color_estimator(false),
  37       use_memory_management(true),
  38       prediction_benchmarking(false),
  39       timeout_and_draw_when_animation_checkerboards(true),
  40       minimum_contents_scale(0.0625f),
  41       low_res_contents_scale_factor(0.125f),
  42       top_controls_height(0.f),
  43       top_controls_show_threshold(0.5f),
  44       top_controls_hide_threshold(0.5f),
  45       refresh_rate(60.0),
  46       max_partial_texture_updates(std::numeric_limits<size_t>::max()),
  47       num_raster_threads(1),
  48       default_tile_size(gfx::Size(256, 256)),
  49       max_untiled_layer_size(gfx::Size(512, 512)),
  50       minimum_occlusion_tracking_size(gfx::Size(160, 160)),
  51       use_pinch_zoom_scrollbars(false),
  52       // At 256x256 tiles, 128 tiles cover an area of 2048x4096 pixels.
  53       max_tiles_for_interest_area(128),
  54       max_unused_resource_memory_percentage(100),
  55       highp_threshold_min(0),
  56       strict_layer_property_change_checking(false) {
  57   // TODO(danakj): Renable surface caching when we can do it more realiably.
  58   // crbug.com/170713
  59   cache_render_pass_contents = false;
  60 }
  61
  62 LayerTreeSettings::~LayerTreeSettings() {}
  63
  64 }  // namespace cc