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 throttle_frame_production(true), 19 begin_frame_scheduling_enabled(false), 20 main_frame_before_draw_enabled(true), 21 main_frame_before_activation_enabled(false), 22 using_synchronous_renderer_compositor(false), 23 report_overscroll_only_for_scrollable_axes(false), 24 per_tile_painting_enabled(false), 25 partial_swap_enabled(false), 26 accelerated_animation_enabled(true), 27 can_use_lcd_text(true), 28 should_clear_root_render_pass(true), 29 gpu_rasterization_enabled(false), 30 gpu_rasterization_forced(false), 31 recording_mode(RecordNormally), 32 create_low_res_tiling(true), 33 scrollbar_animator(NoAnimator), 34 scrollbar_fade_delay_ms(0), 35 scrollbar_fade_duration_ms(0), 36 solid_color_scrollbar_color(SK_ColorWHITE), 37 calculate_top_controls_position(false), 38 timeout_and_draw_when_animation_checkerboards(true), 39 maximum_number_of_failed_draws_before_draw_is_forced_(3), 40 layer_transforms_should_scale_layer_contents(false), 41 minimum_contents_scale(0.0625f), 42 low_res_contents_scale_factor(0.25f), 43 top_controls_height(0.f), 44 top_controls_show_threshold(0.5f), 45 top_controls_hide_threshold(0.5f), 46 refresh_rate(60.0), 47 max_partial_texture_updates(std::numeric_limits<size_t>::max()), 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 use_pinch_virtual_viewport(false), 53 // At 256x256 tiles, 128 tiles cover an area of 2048x4096 pixels. 54 max_tiles_for_interest_area(128), 55 skewport_target_time_multiplier(1.0f), 56 skewport_extrapolation_limit_in_content_pixels(2000), 57 max_unused_resource_memory_percentage(100), 58 max_memory_for_prepaint_percentage(100), 59 highp_threshold_min(0), 60 strict_layer_property_change_checking(false), 61 use_one_copy(false), 62 use_zero_copy(false), 63 ignore_root_layer_flings(false), 64 use_rgba_4444_textures(false), 65 touch_hit_testing(true), 66 texture_id_allocation_chunk_size(64), 67 record_full_layer(false) { 68 } 69 70 LayerTreeSettings::~LayerTreeSettings() {} 71 72 } // namespace cc 73
