Chris Craik | 05f3d6e | 2014-06-02 16:27:04 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 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 | |
| 17 | #ifndef ANDROID_HWUI_TESSELLATION_CACHE_H |
| 18 | #define ANDROID_HWUI_TESSELLATION_CACHE_H |
| 19 | |
| 20 | #include <utils/LruCache.h> |
| 21 | #include <utils/Mutex.h> |
| 22 | #include <utils/Vector.h> |
| 23 | |
| 24 | #include "Debug.h" |
| 25 | #include "utils/Macros.h" |
| 26 | #include "utils/Pair.h" |
| 27 | #include "VertexBuffer.h" |
| 28 | |
| 29 | class SkBitmap; |
| 30 | class SkCanvas; |
| 31 | class SkPaint; |
| 32 | class SkPath; |
| 33 | struct SkRect; |
| 34 | |
| 35 | namespace android { |
| 36 | namespace uirenderer { |
| 37 | |
| 38 | class Caches; |
| 39 | |
| 40 | /////////////////////////////////////////////////////////////////////////////// |
| 41 | // Classes |
| 42 | /////////////////////////////////////////////////////////////////////////////// |
| 43 | |
| 44 | class TessellationCache { |
| 45 | public: |
| 46 | typedef Pair<VertexBuffer*, VertexBuffer*> vertexBuffer_pair_t; |
| 47 | |
| 48 | struct Description { |
| 49 | DESCRIPTION_TYPE(Description); |
| 50 | enum Type { |
| 51 | kNone, |
| 52 | kRoundRect, |
| 53 | kAmbientShadow, |
| 54 | kSpotShadow |
| 55 | }; |
| 56 | |
| 57 | Type type; |
Chris Craik | ed4ef0b | 2014-06-12 13:27:30 -0700 | [diff] [blame^] | 58 | bool aa; |
Chris Craik | 05f3d6e | 2014-06-02 16:27:04 -0700 | [diff] [blame] | 59 | SkPaint::Cap cap; |
| 60 | SkPaint::Style style; |
| 61 | float strokeWidth; |
| 62 | union Shape { |
| 63 | struct RoundRect { |
| 64 | float mScaleX; |
| 65 | float mScaleY; |
| 66 | float mWidth; |
| 67 | float mHeight; |
| 68 | float mRx; |
| 69 | float mRy; |
| 70 | } roundRect; |
| 71 | } shape; |
| 72 | |
| 73 | Description(); |
| 74 | Description(Type type); |
| 75 | Description(Type type, const SkPaint* paint); |
| 76 | hash_t hash() const; |
| 77 | }; |
| 78 | |
| 79 | struct ShadowDescription { |
| 80 | DESCRIPTION_TYPE(ShadowDescription); |
| 81 | const void* nodeKey; |
| 82 | float matrixData[16]; |
| 83 | |
| 84 | ShadowDescription(); |
| 85 | ShadowDescription(const void* nodeKey, const Matrix4* drawTransform); |
| 86 | hash_t hash() const; |
| 87 | }; |
| 88 | |
| 89 | TessellationCache(); |
| 90 | ~TessellationCache(); |
| 91 | |
| 92 | /** |
| 93 | * Clears the cache. This causes all TessellationBuffers to be deleted. |
| 94 | */ |
| 95 | void clear(); |
| 96 | |
| 97 | /** |
| 98 | * Sets the maximum size of the cache in bytes. |
| 99 | */ |
| 100 | void setMaxSize(uint32_t maxSize); |
| 101 | /** |
| 102 | * Returns the maximum size of the cache in bytes. |
| 103 | */ |
| 104 | uint32_t getMaxSize(); |
| 105 | /** |
| 106 | * Returns the current size of the cache in bytes. |
| 107 | */ |
| 108 | uint32_t getSize(); |
| 109 | |
| 110 | /** |
| 111 | * Trims the contents of the cache, removing items until it's under its |
| 112 | * specified limit. |
| 113 | * |
| 114 | * Trimming is used for caches that support pre-caching from a worker |
| 115 | * thread. During pre-caching the maximum limit of the cache can be |
| 116 | * exceeded for the duration of the frame. It is therefore required to |
| 117 | * trim the cache at the end of the frame to keep the total amount of |
| 118 | * memory used under control. |
| 119 | * |
| 120 | * Also removes transient Shadow VertexBuffers, which aren't cached between frames. |
| 121 | */ |
| 122 | void trim(); |
| 123 | |
| 124 | // TODO: precache/get for Oval, Lines, Points, etc. |
| 125 | |
| 126 | void precacheRoundRect(const Matrix4& transform, |
| 127 | float width, float height, float rx, float ry, const SkPaint* paint) { |
| 128 | getRoundRectBuffer(transform, width, height, rx, ry, paint); |
| 129 | } |
| 130 | const VertexBuffer* getRoundRect(const Matrix4& transform, |
| 131 | float width, float height, float rx, float ry, const SkPaint* paint); |
| 132 | |
| 133 | void precacheShadows(const Matrix4* drawTransform, const Rect& localClip, |
| 134 | bool opaque, const SkPath* casterPerimeter, |
| 135 | const Matrix4* transformXY, const Matrix4* transformZ, |
| 136 | const Vector3& lightCenter, float lightRadius); |
| 137 | |
| 138 | void getShadowBuffers(const Matrix4* drawTransform, const Rect& localClip, |
| 139 | bool opaque, const SkPath* casterPerimeter, |
| 140 | const Matrix4* transformXY, const Matrix4* transformZ, |
| 141 | const Vector3& lightCenter, float lightRadius, |
| 142 | vertexBuffer_pair_t& outBuffers); |
| 143 | |
| 144 | private: |
| 145 | class Buffer; |
| 146 | class TessellationTask; |
| 147 | class TessellationProcessor; |
| 148 | |
| 149 | |
| 150 | typedef VertexBuffer* (*Tessellator)(const Description&, const SkPaint&); |
| 151 | |
| 152 | Buffer* getRoundRectBuffer(const Matrix4& transform, |
| 153 | float width, float height, float rx, float ry, const SkPaint* paint); |
| 154 | |
| 155 | Buffer* getOrCreateBuffer(const Description& entry, |
| 156 | Tessellator tessellator, const SkPaint* paint); |
| 157 | |
| 158 | uint32_t mSize; |
| 159 | uint32_t mMaxSize; |
| 160 | |
| 161 | bool mDebugEnabled; |
| 162 | |
| 163 | mutable Mutex mLock; |
| 164 | |
| 165 | /////////////////////////////////////////////////////////////////////////////// |
| 166 | // General tessellation caching |
| 167 | /////////////////////////////////////////////////////////////////////////////// |
| 168 | sp<TaskProcessor<VertexBuffer*> > mProcessor; |
| 169 | LruCache<Description, Buffer*> mCache; |
| 170 | class BufferRemovedListener : public OnEntryRemoved<Description, Buffer*> { |
| 171 | void operator()(Description& description, Buffer*& buffer); |
| 172 | }; |
| 173 | BufferRemovedListener mBufferRemovedListener; |
| 174 | |
| 175 | /////////////////////////////////////////////////////////////////////////////// |
| 176 | // Shadow tessellation caching |
| 177 | /////////////////////////////////////////////////////////////////////////////// |
| 178 | sp<TaskProcessor<vertexBuffer_pair_t*> > mShadowProcessor; |
| 179 | |
| 180 | // holds a pointer, and implicit strong ref to each shadow task of the frame |
| 181 | LruCache<ShadowDescription, Task<vertexBuffer_pair_t*>*> mShadowCache; |
| 182 | class BufferPairRemovedListener : public OnEntryRemoved<ShadowDescription, Task<vertexBuffer_pair_t*>*> { |
| 183 | void operator()(ShadowDescription& description, Task<vertexBuffer_pair_t*>*& bufferPairTask) { |
| 184 | bufferPairTask->decStrong(NULL); |
| 185 | } |
| 186 | }; |
| 187 | BufferPairRemovedListener mBufferPairRemovedListener; |
| 188 | |
| 189 | }; // class TessellationCache |
| 190 | |
| 191 | }; // namespace uirenderer |
| 192 | }; // namespace android |
| 193 | |
| 194 | #endif // ANDROID_HWUI_PATH_CACHE_H |