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 17 #ifndef ANDROID_HWUI_DISPLAY_LIST_RENDERER_H 18 #define ANDROID_HWUI_DISPLAY_LIST_RENDERER_H 19 20 #include "CanvasState.h" 21 #include "DisplayList.h" 22 #include "RenderNode.h" 23 #include "ResourceCache.h" 24 #include "SkiaCanvasProxy.h" 25 #include "hwui/Canvas.h" 26 #include "utils/Macros.h" 27 28 #include <SkDrawFilter.h> 29 #include <SkMatrix.h> 30 #include <SkPaint.h> 31 #include <SkPath.h> 32 #include <SkRegion.h> 33 #include <SkTLazy.h> 34 #include <cutils/compiler.h> 35 36 namespace android { 37 namespace uirenderer { 38 39 /////////////////////////////////////////////////////////////////////////////// 40 // Defines 41 /////////////////////////////////////////////////////////////////////////////// 42 43 // Debug 44 #if DEBUG_DISPLAY_LIST 45 #define DISPLAY_LIST_LOGD(...) ALOGD(__VA_ARGS__) 46 #else 47 #define DISPLAY_LIST_LOGD(...) 48 #endif 49 50 /////////////////////////////////////////////////////////////////////////////// 51 // Display list 52 /////////////////////////////////////////////////////////////////////////////// 53 54 class DeferredDisplayList; 55 class DeferredLayerUpdater; 56 class DisplayListOp; 57 class DrawOp; 58 class DrawRenderNodeOp; 59 class RenderNode; 60 class StateOp; 61 62 /** 63 * Records drawing commands in a display list for later playback into an OpenGLRenderer. 64 */ 65 class ANDROID_API DisplayListCanvas: public Canvas, public CanvasStateClient { 66 public: 67 DisplayListCanvas(int width, int height); 68 virtual ~DisplayListCanvas(); 69 70 virtual void resetRecording(int width, int height) override; 71 virtual WARN_UNUSED_RESULT DisplayList* finishRecording() override; 72 73 // ---------------------------------------------------------------------------- 74 // HWUI Canvas state operations 75 // ---------------------------------------------------------------------------- 76 77 virtual void insertReorderBarrier(bool enableReorder) override; 78 79 // ---------------------------------------------------------------------------- 80 // HWUI Canvas draw operations 81 // ---------------------------------------------------------------------------- 82 83 // Shapes 84 virtual void drawRoundRect(CanvasPropertyPrimitive* left, CanvasPropertyPrimitive* top, 85 CanvasPropertyPrimitive* right, CanvasPropertyPrimitive* bottom, 86 CanvasPropertyPrimitive* rx, CanvasPropertyPrimitive* ry, 87 CanvasPropertyPaint* paint) override; 88 virtual void drawCircle(CanvasPropertyPrimitive* x, CanvasPropertyPrimitive* y, 89 CanvasPropertyPrimitive* radius, CanvasPropertyPaint* paint) override; 90 91 // ---------------------------------------------------------------------------- 92 // HWUI Canvas draw operations - special 93 // ---------------------------------------------------------------------------- 94 virtual void drawLayer(DeferredLayerUpdater* layerHandle) override; 95 virtual void drawRenderNode(RenderNode* renderNode) override; 96 virtual void callDrawGLFunction(Functor* functor, 97 GlFunctorLifecycleListener* listener) override; 98 99 // ---------------------------------------------------------------------------- 100 // CanvasStateClient interface 101 // ---------------------------------------------------------------------------- 102 virtual void onViewportInitialized() override { } 103 virtual void onSnapshotRestored(const Snapshot& removed, const Snapshot& restored) override { } 104 virtual GLuint getTargetFbo() const override { return -1; } 105 106 // ---------------------------------------------------------------------------- 107 // android/graphics/Canvas interface 108 // ---------------------------------------------------------------------------- 109 virtual SkCanvas* asSkCanvas() override; 110 111 virtual void setBitmap(const SkBitmap& bitmap) override { 112 LOG_ALWAYS_FATAL("DisplayListCanvas is not backed by a bitmap."); 113 } 114 115 virtual bool isOpaque() override { return false; } 116 virtual int width() override { return mState.getWidth(); } 117 virtual int height() override { return mState.getHeight(); } 118 119 virtual void setHighContrastText(bool highContrastText) override { 120 mHighContrastText = highContrastText; 121 } 122 virtual bool isHighContrastText() override { return mHighContrastText; } 123 124 // ---------------------------------------------------------------------------- 125 // android/graphics/Canvas state operations 126 // ---------------------------------------------------------------------------- 127 // Save (layer) 128 virtual int getSaveCount() const override { return mState.getSaveCount(); } 129 virtual int save(SaveFlags::Flags flags) override; 130 virtual void restore() override; 131 virtual void restoreToCount(int saveCount) override; 132 133 virtual int saveLayer(float left, float top, float right, float bottom, const SkPaint* paint, 134 SaveFlags::Flags flags) override; 135 virtual int saveLayerAlpha(float left, float top, float right, float bottom, 136 int alpha, SaveFlags::Flags flags) override { 137 SkPaint paint; 138 paint.setAlpha(alpha); 139 return saveLayer(left, top, right, bottom, &paint, flags); 140 } 141 142 // Matrix 143 virtual void getMatrix(SkMatrix* outMatrix) const override { mState.getMatrix(outMatrix); } 144 virtual void setMatrix(const SkMatrix& matrix) override; 145 146 virtual void concat(const SkMatrix& matrix) override; 147 virtual void rotate(float degrees) override; 148 virtual void scale(float sx, float sy) override; 149 virtual void skew(float sx, float sy) override; 150 virtual void translate(float dx, float dy) override; 151 152 // Clip 153 virtual bool getClipBounds(SkRect* outRect) const override; 154 virtual bool quickRejectRect(float left, float top, float right, float bottom) const override; 155 virtual bool quickRejectPath(const SkPath& path) const override; 156 157 virtual bool clipRect(float left, float top, float right, float bottom, SkRegion::Op op) override; 158 virtual bool clipPath(const SkPath* path, SkRegion::Op op) override; 159 virtual bool clipRegion(const SkRegion* region, SkRegion::Op op) override; 160 161 // Misc 162 virtual SkDrawFilter* getDrawFilter() override { return mDrawFilter.get(); } 163 virtual void setDrawFilter(SkDrawFilter* filter) override; 164 165 // ---------------------------------------------------------------------------- 166 // android/graphics/Canvas draw operations 167 // ---------------------------------------------------------------------------- 168 virtual void drawColor(int color, SkXfermode::Mode mode) override; 169 virtual void drawPaint(const SkPaint& paint) override; 170 171 // Geometry 172 virtual void drawPoint(float x, float y, const SkPaint& paint) override { 173 float points[2] = { x, y }; 174 drawPoints(points, 2, paint); 175 } 176 virtual void drawPoints(const float* points, int count, const SkPaint& paint) override; 177 virtual void drawLine(float startX, float startY, float stopX, float stopY, 178 const SkPaint& paint) override { 179 float points[4] = { startX, startY, stopX, stopY }; 180 drawLines(points, 4, paint); 181 } 182 virtual void drawLines(const float* points, int count, const SkPaint& paint) override; 183 virtual void drawRect(float left, float top, float right, float bottom, const SkPaint& paint) override; 184 virtual void drawRegion(const SkRegion& region, const SkPaint& paint) override; 185 virtual void drawRoundRect(float left, float top, float right, float bottom, 186 float rx, float ry, const SkPaint& paint) override; 187 virtual void drawCircle(float x, float y, float radius, const SkPaint& paint) override; 188 virtual void drawOval(float left, float top, float right, float bottom, const SkPaint& paint) override; 189 virtual void drawArc(float left, float top, float right, float bottom, 190 float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) override; 191 virtual void drawPath(const SkPath& path, const SkPaint& paint) override; 192 virtual void drawVertices(SkCanvas::VertexMode vertexMode, int vertexCount, 193 const float* verts, const float* tex, const int* colors, 194 const uint16_t* indices, int indexCount, const SkPaint& paint) override 195 { /* DisplayListCanvas does not support drawVertices(); ignore */ } 196 197 // Bitmap-based 198 virtual void drawBitmap(const SkBitmap& bitmap, float left, float top, const SkPaint* paint) override; 199 virtual void drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix, 200 const SkPaint* paint) override; 201 virtual void drawBitmap(const SkBitmap& bitmap, float srcLeft, float srcTop, 202 float srcRight, float srcBottom, float dstLeft, float dstTop, 203 float dstRight, float dstBottom, const SkPaint* paint) override; 204 virtual void drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight, 205 const float* vertices, const int* colors, const SkPaint* paint) override; 206 virtual void drawNinePatch(const SkBitmap& bitmap, const android::Res_png_9patch& chunk, 207 float dstLeft, float dstTop, float dstRight, float dstBottom, 208 const SkPaint* paint) override; 209 210 virtual void drawVectorDrawable(VectorDrawableRoot* tree) override; 211 212 // Text 213 virtual void drawGlyphs(const uint16_t* glyphs, const float* positions, int count, 214 const SkPaint& paint, float x, float y, float boundsLeft, float boundsTop, 215 float boundsRight, float boundsBottom, float totalAdvance) override; 216 virtual void drawGlyphsOnPath(const uint16_t* glyphs, int count, const SkPath& path, 217 float hOffset, float vOffset, const SkPaint& paint) override; 218 virtual bool drawTextAbsolutePos() const override { return false; } 219 220 private: 221 222 CanvasState mState; 223 std::unique_ptr<SkiaCanvasProxy> mSkiaCanvasProxy; 224 225 enum DeferredBarrierType { 226 kBarrier_None, 227 kBarrier_InOrder, 228 kBarrier_OutOfOrder, 229 }; 230 231 void drawBitmap(const SkBitmap* bitmap, const SkPaint* paint); 232 void drawRects(const float* rects, int count, const SkPaint* paint); 233 234 void flushRestoreToCount(); 235 void flushTranslate(); 236 void flushReorderBarrier(); 237 238 LinearAllocator& alloc() { return mDisplayList->allocator; } 239 240 // Each method returns final index of op 241 size_t addOpAndUpdateChunk(DisplayListOp* op); 242 // flushes any deferred operations, and appends the op 243 size_t flushAndAddOp(DisplayListOp* op); 244 245 size_t addStateOp(StateOp* op); 246 size_t addDrawOp(DrawOp* op); 247 size_t addRenderNodeOp(DrawRenderNodeOp* op); 248 249 void refBitmapsInShader(const SkShader* shader); 250 251 template<class T> 252 inline const T* refBuffer(const T* srcBuffer, int32_t count) { 253 if (!srcBuffer) return nullptr; 254 255 T* dstBuffer = (T*) mDisplayList->allocator.alloc<T>(count * sizeof(T)); 256 memcpy(dstBuffer, srcBuffer, count * sizeof(T)); 257 return dstBuffer; 258 } 259 260 inline const SkPath* refPath(const SkPath* path) { 261 if (!path) return nullptr; 262 263 // The points/verbs within the path are refcounted so this copy operation 264 // is inexpensive and maintains the generationID of the original path. 265 const SkPath* cachedPath = new SkPath(*path); 266 mDisplayList->pathResources.push_back(cachedPath); 267 return cachedPath; 268 } 269 270 inline const SkPaint* refPaint(const SkPaint* paint) { 271 if (!paint) return nullptr; 272 273 // If there is a draw filter apply it here and store the modified paint 274 // so that we don't need to modify the paint every time we access it. 275 SkTLazy<SkPaint> filteredPaint; 276 if (mDrawFilter.get()) { 277 filteredPaint.set(*paint); 278 mDrawFilter->filter(filteredPaint.get(), SkDrawFilter::kPaint_Type); 279 paint = filteredPaint.get(); 280 } 281 282 // compute the hash key for the paint and check the cache. 283 const uint32_t key = paint->getHash(); 284 const SkPaint* cachedPaint = mPaintMap.valueFor(key); 285 // In the unlikely event that 2 unique paints have the same hash we do a 286 // object equality check to ensure we don't erroneously dedup them. 287 if (cachedPaint == nullptr || *cachedPaint != *paint) { 288 cachedPaint = new SkPaint(*paint); 289 std::unique_ptr<const SkPaint> copy(cachedPaint); 290 mDisplayList->paints.push_back(std::move(copy)); 291 292 // replaceValueFor() performs an add if the entry doesn't exist 293 mPaintMap.replaceValueFor(key, cachedPaint); 294 refBitmapsInShader(cachedPaint->getShader()); 295 } 296 297 return cachedPaint; 298 } 299 300 inline const SkRegion* refRegion(const SkRegion* region) { 301 if (!region) { 302 return region; 303 } 304 305 const SkRegion* cachedRegion = mRegionMap.valueFor(region); 306 // TODO: Add generation ID to SkRegion 307 if (cachedRegion == nullptr) { 308 std::unique_ptr<const SkRegion> copy(new SkRegion(*region)); 309 cachedRegion = copy.get(); 310 mDisplayList->regions.push_back(std::move(copy)); 311 312 // replaceValueFor() performs an add if the entry doesn't exist 313 mRegionMap.replaceValueFor(region, cachedRegion); 314 } 315 316 return cachedRegion; 317 } 318 319 inline const SkBitmap* refBitmap(const SkBitmap& bitmap) { 320 // Note that this assumes the bitmap is immutable. There are cases this won't handle 321 // correctly, such as creating the bitmap from scratch, drawing with it, changing its 322 // contents, and drawing again. The only fix would be to always copy it the first time, 323 // which doesn't seem worth the extra cycles for this unlikely case. 324 SkBitmap* localBitmap = alloc().create<SkBitmap>(bitmap); 325 mDisplayList->bitmapResources.push_back(localBitmap); 326 return localBitmap; 327 } 328 329 inline const Res_png_9patch* refPatch(const Res_png_9patch* patch) { 330 mDisplayList->patchResources.push_back(patch); 331 mResourceCache.incrementRefcount(patch); 332 return patch; 333 } 334 335 DefaultKeyedVector<uint32_t, const SkPaint*> mPaintMap; 336 DefaultKeyedVector<const SkPath*, const SkPath*> mPathMap; 337 DefaultKeyedVector<const SkRegion*, const SkRegion*> mRegionMap; 338 339 ResourceCache& mResourceCache; 340 DisplayList* mDisplayList; 341 342 float mTranslateX; 343 float mTranslateY; 344 bool mHasDeferredTranslate; 345 DeferredBarrierType mDeferredBarrierType; 346 bool mHighContrastText; 347 348 int mRestoreSaveCount; 349 350 SkAutoTUnref<SkDrawFilter> mDrawFilter; 351 352 friend class RenderNode; 353 354 }; // class DisplayListCanvas 355 356 }; // namespace uirenderer 357 }; // namespace android 358 359 #endif // ANDROID_HWUI_DISPLAY_LIST_RENDERER_H 360
