| /* |
| * Copyright 2017 Google Inc. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef COBALT_BROWSER_MEMORY_SETTINGS_CALCULATIONS_H_ |
| #define COBALT_BROWSER_MEMORY_SETTINGS_CALCULATIONS_H_ |
| |
| #include "base/optional.h" |
| #include "cobalt/browser/memory_settings/texture_dimensions.h" |
| #include "cobalt/math/size.h" |
| #include "starboard/types.h" |
| |
| namespace cobalt { |
| namespace browser { |
| namespace memory_settings { |
| |
| ////////////////////////// Calculate Functions //////////////////////////////// |
| // These functions are exposed here for testing purposes and should not be used |
| // directly. |
| // Calculates the ImageCacheSize in bytes. |
| // The return ranges from [kMinImageCacheSize, kMaxImageCacheSize]. |
| int64_t CalculateImageCacheSize(const math::Size& dimensions); |
| |
| // Calculates the SkiaAtlasTextureSize. |
| // When the ui resolution is 1920x1080, then the returned atlas texture size |
| // will be 8192x4096. The texture will scale up and down, by powers of two, |
| // in relation to the input ui_resolution. The returned value will be clamped |
| // such that |
| // kMinSkiaTextureAtlasWidth <= output.width() <= kMaxSkiaTextureAtlasWidth |
| // and |
| // kMinSkiaTextureAtlasHeight <= output.height() <= kMaxSkiaTextureAtlasHeight |
| // will be true. |
| TextureDimensions CalculateSkiaGlyphAtlasTextureSize( |
| const math::Size& ui_resolution); |
| |
| // Calculates the SoftwareSurfaceCacheSize given the ui_resolution. |
| int64_t CalculateSoftwareSurfaceCacheSizeInBytes( |
| const math::Size& ui_resolution); |
| |
| // Calculates the SkiaCachSize from the ui_resolution. This is normalized |
| // to be 4MB @ 1080p and scales accordingly. |
| int64_t CalculateSkiaCacheSize(const math::Size& ui_resolution); |
| |
| } // namespace memory_settings |
| } // namespace browser |
| } // namespace cobalt |
| |
| #endif // COBALT_BROWSER_MEMORY_SETTINGS_CALCULATIONS_H_ |