Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Romain Guy | 5b3b352 | 2010-10-27 18:57:51 -0700 | [diff] [blame] | 17 | #ifndef ANDROID_HWUI_GRADIENT_CACHE_H |
| 18 | #define ANDROID_HWUI_GRADIENT_CACHE_H |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 19 | |
Romain Guy | b488004 | 2013-04-05 11:17:55 -0700 | [diff] [blame] | 20 | #include <GLES3/gl3.h> |
Romain Guy | 8dcfd5e | 2012-07-20 11:36:03 -0700 | [diff] [blame] | 21 | |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 22 | #include <SkShader.h> |
| 23 | |
Romain Guy | 059e12c | 2012-11-28 17:35:51 -0800 | [diff] [blame] | 24 | #include <utils/LruCache.h> |
Derek Sollenberger | 029f643 | 2012-03-05 16:48:32 -0500 | [diff] [blame] | 25 | #include <utils/Mutex.h> |
Romain Guy | fe48f65 | 2010-11-11 15:36:56 -0800 | [diff] [blame] | 26 | #include <utils/Vector.h> |
| 27 | |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 28 | #include "Texture.h" |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 29 | |
| 30 | namespace android { |
| 31 | namespace uirenderer { |
| 32 | |
Romain Guy | 6203f6c | 2011-08-01 18:56:21 -0700 | [diff] [blame] | 33 | struct GradientCacheEntry { |
| 34 | GradientCacheEntry() { |
| 35 | count = 0; |
| 36 | colors = NULL; |
| 37 | positions = NULL; |
Romain Guy | 6203f6c | 2011-08-01 18:56:21 -0700 | [diff] [blame] | 38 | } |
| 39 | |
Romain Guy | 059e12c | 2012-11-28 17:35:51 -0800 | [diff] [blame] | 40 | GradientCacheEntry(uint32_t* colors, float* positions, uint32_t count) { |
Romain Guy | 42e1e0d | 2012-07-30 14:47:51 -0700 | [diff] [blame] | 41 | copy(colors, positions, count); |
Romain Guy | 6203f6c | 2011-08-01 18:56:21 -0700 | [diff] [blame] | 42 | } |
| 43 | |
| 44 | GradientCacheEntry(const GradientCacheEntry& entry) { |
Romain Guy | 42e1e0d | 2012-07-30 14:47:51 -0700 | [diff] [blame] | 45 | copy(entry.colors, entry.positions, entry.count); |
Romain Guy | 6203f6c | 2011-08-01 18:56:21 -0700 | [diff] [blame] | 46 | } |
| 47 | |
| 48 | ~GradientCacheEntry() { |
Romain Guy | e5df231 | 2011-08-12 14:23:53 -0700 | [diff] [blame] | 49 | delete[] colors; |
| 50 | delete[] positions; |
| 51 | } |
| 52 | |
| 53 | GradientCacheEntry& operator=(const GradientCacheEntry& entry) { |
| 54 | if (this != &entry) { |
| 55 | delete[] colors; |
| 56 | delete[] positions; |
| 57 | |
Romain Guy | 42e1e0d | 2012-07-30 14:47:51 -0700 | [diff] [blame] | 58 | copy(entry.colors, entry.positions, entry.count); |
Romain Guy | e5df231 | 2011-08-12 14:23:53 -0700 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | return *this; |
Romain Guy | 6203f6c | 2011-08-01 18:56:21 -0700 | [diff] [blame] | 62 | } |
| 63 | |
Romain Guy | 059e12c | 2012-11-28 17:35:51 -0800 | [diff] [blame] | 64 | hash_t hash() const; |
| 65 | |
| 66 | static int compare(const GradientCacheEntry& lhs, const GradientCacheEntry& rhs); |
| 67 | |
| 68 | bool operator==(const GradientCacheEntry& other) const { |
| 69 | return compare(*this, other) == 0; |
| 70 | } |
| 71 | |
| 72 | bool operator!=(const GradientCacheEntry& other) const { |
| 73 | return compare(*this, other) != 0; |
Romain Guy | 6203f6c | 2011-08-01 18:56:21 -0700 | [diff] [blame] | 74 | } |
| 75 | |
| 76 | uint32_t* colors; |
| 77 | float* positions; |
Romain Guy | 059e12c | 2012-11-28 17:35:51 -0800 | [diff] [blame] | 78 | uint32_t count; |
Romain Guy | 6203f6c | 2011-08-01 18:56:21 -0700 | [diff] [blame] | 79 | |
Romain Guy | e5df231 | 2011-08-12 14:23:53 -0700 | [diff] [blame] | 80 | private: |
Romain Guy | 059e12c | 2012-11-28 17:35:51 -0800 | [diff] [blame] | 81 | void copy(uint32_t* colors, float* positions, uint32_t count) { |
Romain Guy | e5df231 | 2011-08-12 14:23:53 -0700 | [diff] [blame] | 82 | this->count = count; |
| 83 | this->colors = new uint32_t[count]; |
| 84 | this->positions = new float[count]; |
Romain Guy | e5df231 | 2011-08-12 14:23:53 -0700 | [diff] [blame] | 85 | |
| 86 | memcpy(this->colors, colors, count * sizeof(uint32_t)); |
| 87 | memcpy(this->positions, positions, count * sizeof(float)); |
| 88 | } |
| 89 | |
Romain Guy | 6203f6c | 2011-08-01 18:56:21 -0700 | [diff] [blame] | 90 | }; // GradientCacheEntry |
| 91 | |
Romain Guy | 059e12c | 2012-11-28 17:35:51 -0800 | [diff] [blame] | 92 | // Caching support |
| 93 | |
| 94 | inline int strictly_order_type(const GradientCacheEntry& lhs, const GradientCacheEntry& rhs) { |
| 95 | return GradientCacheEntry::compare(lhs, rhs) < 0; |
| 96 | } |
| 97 | |
| 98 | inline int compare_type(const GradientCacheEntry& lhs, const GradientCacheEntry& rhs) { |
| 99 | return GradientCacheEntry::compare(lhs, rhs); |
| 100 | } |
| 101 | |
| 102 | inline hash_t hash_type(const GradientCacheEntry& entry) { |
| 103 | return entry.hash(); |
| 104 | } |
| 105 | |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 106 | /** |
| 107 | * A simple LRU gradient cache. The cache has a maximum size expressed in bytes. |
| 108 | * Any texture added to the cache causing the cache to grow beyond the maximum |
| 109 | * allowed size will also cause the oldest texture to be kicked out. |
| 110 | */ |
Romain Guy | 6203f6c | 2011-08-01 18:56:21 -0700 | [diff] [blame] | 111 | class GradientCache: public OnEntryRemoved<GradientCacheEntry, Texture*> { |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 112 | public: |
Romain Guy | fb8b763 | 2010-08-23 21:05:08 -0700 | [diff] [blame] | 113 | GradientCache(); |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 114 | GradientCache(uint32_t maxByteSize); |
| 115 | ~GradientCache(); |
| 116 | |
| 117 | /** |
| 118 | * Used as a callback when an entry is removed from the cache. |
| 119 | * Do not invoke directly. |
| 120 | */ |
Romain Guy | 6203f6c | 2011-08-01 18:56:21 -0700 | [diff] [blame] | 121 | void operator()(GradientCacheEntry& shader, Texture*& texture); |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 122 | |
| 123 | /** |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 124 | * Returns the texture associated with the specified shader. |
| 125 | */ |
Romain Guy | 42e1e0d | 2012-07-30 14:47:51 -0700 | [diff] [blame] | 126 | Texture* get(uint32_t* colors, float* positions, int count); |
| 127 | |
Romain Guy | fe48f65 | 2010-11-11 15:36:56 -0800 | [diff] [blame] | 128 | /** |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 129 | * Clears the cache. This causes all textures to be deleted. |
| 130 | */ |
| 131 | void clear(); |
| 132 | |
| 133 | /** |
| 134 | * Sets the maximum size of the cache in bytes. |
| 135 | */ |
| 136 | void setMaxSize(uint32_t maxSize); |
| 137 | /** |
| 138 | * Returns the maximum size of the cache in bytes. |
| 139 | */ |
| 140 | uint32_t getMaxSize(); |
| 141 | /** |
| 142 | * Returns the current size of the cache in bytes. |
| 143 | */ |
| 144 | uint32_t getSize(); |
| 145 | |
| 146 | private: |
Romain Guy | 6203f6c | 2011-08-01 18:56:21 -0700 | [diff] [blame] | 147 | /** |
| 148 | * Adds a new linear gradient to the cache. The generated texture is |
| 149 | * returned. |
| 150 | */ |
| 151 | Texture* addLinearGradient(GradientCacheEntry& gradient, |
Romain Guy | 42e1e0d | 2012-07-30 14:47:51 -0700 | [diff] [blame] | 152 | uint32_t* colors, float* positions, int count); |
Romain Guy | 6203f6c | 2011-08-01 18:56:21 -0700 | [diff] [blame] | 153 | |
Chris Craik | e63f7c62 | 2013-10-17 10:30:55 -0700 | [diff] [blame] | 154 | void generateTexture(uint32_t* colors, float* positions, Texture* texture); |
Romain Guy | 42e1e0d | 2012-07-30 14:47:51 -0700 | [diff] [blame] | 155 | |
| 156 | struct GradientInfo { |
| 157 | uint32_t width; |
| 158 | bool hasAlpha; |
| 159 | }; |
| 160 | |
| 161 | void getGradientInfo(const uint32_t* colors, const int count, GradientInfo& info); |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 162 | |
Romain Guy | b488004 | 2013-04-05 11:17:55 -0700 | [diff] [blame] | 163 | size_t bytesPerPixel() const; |
| 164 | |
| 165 | struct GradientColor { |
| 166 | float r; |
| 167 | float g; |
| 168 | float b; |
| 169 | float a; |
| 170 | }; |
| 171 | |
| 172 | typedef void (GradientCache::*ChannelSplitter)(uint32_t inColor, |
| 173 | GradientColor& outColor) const; |
| 174 | |
| 175 | void splitToBytes(uint32_t inColor, GradientColor& outColor) const; |
| 176 | void splitToFloats(uint32_t inColor, GradientColor& outColor) const; |
| 177 | |
| 178 | typedef void (GradientCache::*ChannelMixer)(GradientColor& start, GradientColor& end, |
| 179 | float amount, uint8_t*& dst) const; |
| 180 | |
| 181 | void mixBytes(GradientColor& start, GradientColor& end, float amount, uint8_t*& dst) const; |
| 182 | void mixFloats(GradientColor& start, GradientColor& end, float amount, uint8_t*& dst) const; |
| 183 | |
Romain Guy | 059e12c | 2012-11-28 17:35:51 -0800 | [diff] [blame] | 184 | LruCache<GradientCacheEntry, Texture*> mCache; |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 185 | |
| 186 | uint32_t mSize; |
| 187 | uint32_t mMaxSize; |
Romain Guy | a2341a9 | 2010-09-08 18:04:33 -0700 | [diff] [blame] | 188 | |
Romain Guy | 8dcfd5e | 2012-07-20 11:36:03 -0700 | [diff] [blame] | 189 | GLint mMaxTextureSize; |
Romain Guy | b488004 | 2013-04-05 11:17:55 -0700 | [diff] [blame] | 190 | bool mUseFloatTexture; |
| 191 | bool mHasNpot; |
Romain Guy | 8dcfd5e | 2012-07-20 11:36:03 -0700 | [diff] [blame] | 192 | |
Romain Guy | fe48f65 | 2010-11-11 15:36:56 -0800 | [diff] [blame] | 193 | Vector<SkShader*> mGarbage; |
Romain Guy | a2341a9 | 2010-09-08 18:04:33 -0700 | [diff] [blame] | 194 | mutable Mutex mLock; |
Romain Guy | c0ac193 | 2010-07-19 18:43:02 -0700 | [diff] [blame] | 195 | }; // class GradientCache |
| 196 | |
| 197 | }; // namespace uirenderer |
| 198 | }; // namespace android |
| 199 | |
Romain Guy | 5b3b352 | 2010-10-27 18:57:51 -0700 | [diff] [blame] | 200 | #endif // ANDROID_HWUI_GRADIENT_CACHE_H |