OLD | NEW |
1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CC_TILES_MIPMAP_UTIL_H_ | 5 #ifndef CC_TILES_MIPMAP_UTIL_H_ |
6 #define CC_TILES_MIPMAP_UTIL_H_ | 6 #define CC_TILES_MIPMAP_UTIL_H_ |
7 | 7 |
8 #include "cc/base/cc_export.h" | 8 #include "cc/cc_export.h" |
9 #include "third_party/skia/include/core/SkSize.h" | 9 #include "third_party/skia/include/core/SkSize.h" |
10 #include "ui/gfx/skia_util.h" | 10 #include "ui/gfx/skia_util.h" |
11 | 11 |
12 namespace cc { | 12 namespace cc { |
13 | 13 |
14 class CC_EXPORT MipMapUtil { | 14 class CC_EXPORT MipMapUtil { |
15 public: | 15 public: |
16 // Determine the smallest mip level that is larger than |target_size|. Each | 16 // Determine the smallest mip level that is larger than |target_size|. Each |
17 // mip level corresponds to a power of two scale of the image - for instance, | 17 // mip level corresponds to a power of two scale of the image - for instance, |
18 // level 0 is original size, level 1 is 2x smaller, level 2 is 4x smaller, | 18 // level 0 is original size, level 1 is 2x smaller, level 2 is 4x smaller, |
(...skipping 16 matching lines...) Expand all Loading... |
35 // Determines the scale factor for the smallest mip level that is larger than | 35 // Determines the scale factor for the smallest mip level that is larger than |
36 // |target_size|. This function does not do error checking and must be called | 36 // |target_size|. This function does not do error checking and must be called |
37 // with a valid src_size (width/height > 0) and mip_level (>= 0). | 37 // with a valid src_size (width/height > 0) and mip_level (>= 0). |
38 static SkSize GetScaleAdjustmentForSize(const gfx::Size& src_size, | 38 static SkSize GetScaleAdjustmentForSize(const gfx::Size& src_size, |
39 const gfx::Size& target_size); | 39 const gfx::Size& target_size); |
40 }; | 40 }; |
41 | 41 |
42 } // namespace cc | 42 } // namespace cc |
43 | 43 |
44 #endif // CC_TILES_MIPMAP_UTIL_H_ | 44 #endif // CC_TILES_MIPMAP_UTIL_H_ |
OLD | NEW |