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 <SkDrawFilter.h> 21 #include <SkMatrix.h> 22 #include <SkPaint.h> 23 #include <SkPath.h> 24 #include <SkRegion.h> 25 #include <SkTLazy.h> 26 #include <cutils/compiler.h> 27 28 #include "Canvas.h" 29 #include "CanvasState.h" 30 #include "DisplayList.h" 31 #include "SkiaCanvasProxy.h" 32 #include "RenderNode.h" 33 #include "ResourceCache.h" 34 35 namespace android { 36 namespace uirenderer { 37 38 /////////////////////////////////////////////////////////////////////////////// 39 // Defines 40 /////////////////////////////////////////////////////////////////////////////// 41 42 // Debug 43 #if DEBUG_DISPLAY_LIST 44 #define DISPLAY_LIST_LOGD(...) ALOGD(__VA_ARGS__) 45 #else 46 #define DISPLAY_LIST_LOGD(...) 47 #endif 48 49 /////////////////////////////////////////////////////////////////////////////// 50 // Display list 51 /////////////////////////////////////////////////////////////////////////////// 52 53 class DeferredDisplayList; 54 class DeferredLayerUpdater; 55 class DisplayListOp; 56 class DrawOp; 57 class RenderNode; 58 class StateOp; 59 60 /** 61 * Records drawing commands in a display list for later playback into an OpenGLRenderer. 62 */ 63 class ANDROID_API DisplayListCanvas: public Canvas, public CanvasStateClient { 64 public: 65 DisplayListCanvas(); 66 virtual ~DisplayListCanvas(); 67 68 void insertReorderBarrier(bool enableReorder); 69 70 DisplayListData* finishRecording(); 71 72 // ---------------------------------------------------------------------------- 73 // HWUI Frame state operations 74 // ---------------------------------------------------------------------------- 75 76 void prepareDirty(float left, float top, float right, float bottom); 77 void prepare() { prepareDirty(0.0f, 0.0f, width(), height()); } 78 bool finish(); 79 void interrupt(); 80 void resume(); 81 82 // ---------------------------------------------------------------------------- 83 // HWUI Canvas state operations 84 // ---------------------------------------------------------------------------- 85 86 void setViewport(int width, int height) { mState.setViewport(width, height); } 87 88 const Rect& getRenderTargetClipBounds() const { return mState.getRenderTargetClipBounds(); } 89 90 bool isCurrentTransformSimple() { 91 return mState.currentTransform()->isSimple(); 92 } 93 94 // ---------------------------------------------------------------------------- 95 // HWUI Canvas draw operations 96 // ---------------------------------------------------------------------------- 97 98 // Bitmap-based 99 void drawBitmap(const SkBitmap* bitmap, const SkPaint* paint); 100 // TODO: move drawPatch() to Canvas.h 101 void drawPatch(const SkBitmap& bitmap, const Res_png_9patch* patch, 102 float left, float top, float right, float bottom, const SkPaint* paint); 103 104 // Shapes 105 void drawRects(const float* rects, int count, const SkPaint* paint); 106 void drawRoundRect(CanvasPropertyPrimitive* left, CanvasPropertyPrimitive* top, 107 CanvasPropertyPrimitive* right, CanvasPropertyPrimitive* bottom, 108 CanvasPropertyPrimitive* rx, CanvasPropertyPrimitive* ry, 109 CanvasPropertyPaint* paint); 110 void drawCircle(CanvasPropertyPrimitive* x, CanvasPropertyPrimitive* y, 111 CanvasPropertyPrimitive* radius, CanvasPropertyPaint* paint); 112 113 114 // ---------------------------------------------------------------------------- 115 // HWUI Canvas draw operations - special 116 // ---------------------------------------------------------------------------- 117 void drawLayer(DeferredLayerUpdater* layerHandle, float x, float y); 118 void drawRenderNode(RenderNode* renderNode); 119 120 // TODO: rename for consistency 121 void callDrawGLFunction(Functor* functor); 122 123 void setHighContrastText(bool highContrastText) { 124 mHighContrastText = highContrastText; 125 } 126 127 // ---------------------------------------------------------------------------- 128 // CanvasStateClient interface 129 // ---------------------------------------------------------------------------- 130 virtual void onViewportInitialized() override { } 131 virtual void onSnapshotRestored(const Snapshot& removed, const Snapshot& restored) override { } 132 virtual GLuint getTargetFbo() const override { return -1; } 133 134 // ---------------------------------------------------------------------------- 135 // android/graphics/Canvas interface 136 // ---------------------------------------------------------------------------- 137 virtual SkCanvas* asSkCanvas() override; 138 139 virtual void setBitmap(const SkBitmap& bitmap) override { 140 LOG_ALWAYS_FATAL("DisplayListCanvas is not backed by a bitmap."); 141 } 142 143 virtual bool isOpaque() override { return false; } 144 virtual int width() override { return mState.getWidth(); } 145 virtual int height() override { return mState.getHeight(); } 146 147 // ---------------------------------------------------------------------------- 148 // android/graphics/Canvas state operations 149 // ---------------------------------------------------------------------------- 150 // Save (layer) 151 virtual int getSaveCount() const override { return mState.getSaveCount(); } 152 virtual int save(SkCanvas::SaveFlags flags) override; 153 virtual void restore() override; 154 virtual void restoreToCount(int saveCount) override; 155 156 virtual int saveLayer(float left, float top, float right, float bottom, const SkPaint* paint, 157 SkCanvas::SaveFlags flags) override; 158 virtual int saveLayerAlpha(float left, float top, float right, float bottom, 159 int alpha, SkCanvas::SaveFlags flags) override { 160 SkPaint paint; 161 paint.setAlpha(alpha); 162 return saveLayer(left, top, right, bottom, &paint, flags); 163 } 164 165 // Matrix 166 virtual void getMatrix(SkMatrix* outMatrix) const override { mState.getMatrix(outMatrix); } 167 virtual void setMatrix(const SkMatrix& matrix) override; 168 virtual void setLocalMatrix(const SkMatrix& matrix) override; 169 170 virtual void concat(const SkMatrix& matrix) override; 171 virtual void rotate(float degrees) override; 172 virtual void scale(float sx, float sy) override; 173 virtual void skew(float sx, float sy) override; 174 virtual void translate(float dx, float dy) override; 175 176 // Clip 177 virtual bool getClipBounds(SkRect* outRect) const override; 178 virtual bool quickRejectRect(float left, float top, float right, float bottom) const override; 179 virtual bool quickRejectPath(const SkPath& path) const override; 180 181 virtual bool clipRect(float left, float top, float right, float bottom, SkRegion::Op op) override; 182 virtual bool clipPath(const SkPath* path, SkRegion::Op op) override; 183 virtual bool clipRegion(const SkRegion* region, SkRegion::Op op) override; 184 185 // Misc 186 virtual SkDrawFilter* getDrawFilter() override { return mDrawFilter.get(); } 187 virtual void setDrawFilter(SkDrawFilter* filter) override; 188 189 // ---------------------------------------------------------------------------- 190 // android/graphics/Canvas draw operations 191 // ---------------------------------------------------------------------------- 192 virtual void drawColor(int color, SkXfermode::Mode mode) override; 193 virtual void drawPaint(const SkPaint& paint) override; 194 195 // Geometry 196 virtual void drawPoint(float x, float y, const SkPaint& paint) override { 197 float points[2] = { x, y }; 198 drawPoints(points, 2, paint); 199 } 200 virtual void drawPoints(const float* points, int count, const SkPaint& paint) override; 201 virtual void drawLine(float startX, float startY, float stopX, float stopY, 202 const SkPaint& paint) override { 203 float points[4] = { startX, startY, stopX, stopY }; 204 drawLines(points, 4, paint); 205 } 206 virtual void drawLines(const float* points, int count, const SkPaint& paint) override; 207 virtual void drawRect(float left, float top, float right, float bottom, const SkPaint& paint) override; 208 virtual void drawRoundRect(float left, float top, float right, float bottom, 209 float rx, float ry, const SkPaint& paint) override; 210 virtual void drawCircle(float x, float y, float radius, const SkPaint& paint) override; 211 virtual void drawOval(float left, float top, float right, float bottom, const SkPaint& paint) override; 212 virtual void drawArc(float left, float top, float right, float bottom, 213 float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) override; 214 virtual void drawPath(const SkPath& path, const SkPaint& paint) override; 215 virtual void drawVertices(SkCanvas::VertexMode vertexMode, int vertexCount, 216 const float* verts, const float* tex, const int* colors, 217 const uint16_t* indices, int indexCount, const SkPaint& paint) override 218 { /* DisplayListCanvas does not support drawVertices(); ignore */ } 219 220 // Bitmap-based 221 virtual void drawBitmap(const SkBitmap& bitmap, float left, float top, const SkPaint* paint) override; 222 virtual void drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix, 223 const SkPaint* paint) override; 224 virtual void drawBitmap(const SkBitmap& bitmap, float srcLeft, float srcTop, 225 float srcRight, float srcBottom, float dstLeft, float dstTop, 226 float dstRight, float dstBottom, const SkPaint* paint) override; 227 virtual void drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight, 228 const float* vertices, const int* colors, const SkPaint* paint) override; 229 230 // Text 231 virtual void drawText(const uint16_t* glyphs, const float* positions, int count, 232 const SkPaint& paint, float x, float y, float boundsLeft, float boundsTop, 233 float boundsRight, float boundsBottom, float totalAdvance) override; 234 virtual void drawPosText(const uint16_t* text, const float* positions, int count, 235 int posCount, const SkPaint& paint) override; 236 virtual void drawTextOnPath(const uint16_t* glyphs, int count, const SkPath& path, 237 float hOffset, float vOffset, const SkPaint& paint) override; 238 virtual bool drawTextAbsolutePos() const override { return false; } 239 240 241 private: 242 243 CanvasState mState; 244 std::unique_ptr<SkiaCanvasProxy> mSkiaCanvasProxy; 245 246 enum DeferredBarrierType { 247 kBarrier_None, 248 kBarrier_InOrder, 249 kBarrier_OutOfOrder, 250 }; 251 252 void flushRestoreToCount(); 253 void flushTranslate(); 254 void flushReorderBarrier(); 255 256 LinearAllocator& alloc() { return mDisplayListData->allocator; } 257 258 // Each method returns final index of op 259 size_t addOpAndUpdateChunk(DisplayListOp* op); 260 // flushes any deferred operations, and appends the op 261 size_t flushAndAddOp(DisplayListOp* op); 262 263 size_t addStateOp(StateOp* op); 264 size_t addDrawOp(DrawOp* op); 265 size_t addRenderNodeOp(DrawRenderNodeOp* op); 266 267 void refBitmapsInShader(const SkShader* shader); 268 269 template<class T> 270 inline const T* refBuffer(const T* srcBuffer, int32_t count) { 271 if (!srcBuffer) return nullptr; 272 273 T* dstBuffer = (T*) mDisplayListData->allocator.alloc(count * sizeof(T)); 274 memcpy(dstBuffer, srcBuffer, count * sizeof(T)); 275 return dstBuffer; 276 } 277 278 inline char* refText(const char* text, size_t byteLength) { 279 return (char*) refBuffer<uint8_t>((uint8_t*)text, byteLength); 280 } 281 282 inline const SkPath* refPath(const SkPath* path) { 283 if (!path) return nullptr; 284 285 // The points/verbs within the path are refcounted so this copy operation 286 // is inexpensive and maintains the generationID of the original path. 287 const SkPath* cachedPath = new SkPath(*path); 288 mDisplayListData->pathResources.add(cachedPath); 289 return cachedPath; 290 } 291 292 inline const SkPaint* refPaint(const SkPaint* paint) { 293 if (!paint) return nullptr; 294 295 // If there is a draw filter apply it here and store the modified paint 296 // so that we don't need to modify the paint every time we access it. 297 SkTLazy<SkPaint> filteredPaint; 298 if (mDrawFilter.get()) { 299 filteredPaint.set(*paint); 300 mDrawFilter->filter(filteredPaint.get(), SkDrawFilter::kPaint_Type); 301 paint = filteredPaint.get(); 302 } 303 304 // compute the hash key for the paint and check the cache. 305 const uint32_t key = paint->getHash(); 306 const SkPaint* cachedPaint = mPaintMap.valueFor(key); 307 // In the unlikely event that 2 unique paints have the same hash we do a 308 // object equality check to ensure we don't erroneously dedup them. 309 if (cachedPaint == nullptr || *cachedPaint != *paint) { 310 cachedPaint = new SkPaint(*paint); 311 std::unique_ptr<const SkPaint> copy(cachedPaint); 312 mDisplayListData->paints.push_back(std::move(copy)); 313 314 // replaceValueFor() performs an add if the entry doesn't exist 315 mPaintMap.replaceValueFor(key, cachedPaint); 316 refBitmapsInShader(cachedPaint->getShader()); 317 } 318 319 return cachedPaint; 320 } 321 322 inline SkPaint* copyPaint(const SkPaint* paint) { 323 if (!paint) return nullptr; 324 325 SkPaint* returnPaint = new SkPaint(*paint); 326 std::unique_ptr<const SkPaint> copy(returnPaint); 327 mDisplayListData->paints.push_back(std::move(copy)); 328 329 return returnPaint; 330 } 331 332 inline const SkRegion* refRegion(const SkRegion* region) { 333 if (!region) { 334 return region; 335 } 336 337 const SkRegion* cachedRegion = mRegionMap.valueFor(region); 338 // TODO: Add generation ID to SkRegion 339 if (cachedRegion == nullptr) { 340 std::unique_ptr<const SkRegion> copy(new SkRegion(*region)); 341 cachedRegion = copy.get(); 342 mDisplayListData->regions.push_back(std::move(copy)); 343 344 // replaceValueFor() performs an add if the entry doesn't exist 345 mRegionMap.replaceValueFor(region, cachedRegion); 346 } 347 348 return cachedRegion; 349 } 350 351 inline const SkBitmap* refBitmap(const SkBitmap& bitmap) { 352 // Note that this assumes the bitmap is immutable. There are cases this won't handle 353 // correctly, such as creating the bitmap from scratch, drawing with it, changing its 354 // contents, and drawing again. The only fix would be to always copy it the first time, 355 // which doesn't seem worth the extra cycles for this unlikely case. 356 SkBitmap* localBitmap = new (alloc()) SkBitmap(bitmap); 357 alloc().autoDestroy(localBitmap); 358 mDisplayListData->bitmapResources.push_back(localBitmap); 359 return localBitmap; 360 } 361 362 inline const Res_png_9patch* refPatch(const Res_png_9patch* patch) { 363 mDisplayListData->patchResources.add(patch); 364 mResourceCache.incrementRefcount(patch); 365 return patch; 366 } 367 368 DefaultKeyedVector<uint32_t, const SkPaint*> mPaintMap; 369 DefaultKeyedVector<const SkPath*, const SkPath*> mPathMap; 370 DefaultKeyedVector<const SkRegion*, const SkRegion*> mRegionMap; 371 372 ResourceCache& mResourceCache; 373 DisplayListData* mDisplayListData; 374 375 float mTranslateX; 376 float mTranslateY; 377 bool mHasDeferredTranslate; 378 DeferredBarrierType mDeferredBarrierType; 379 bool mHighContrastText; 380 381 int mRestoreSaveCount; 382 383 SkAutoTUnref<SkDrawFilter> mDrawFilter; 384 385 friend class RenderNode; 386 387 }; // class DisplayListCanvas 388 389 }; // namespace uirenderer 390 }; // namespace android 391 392 #endif // ANDROID_HWUI_DISPLAY_LIST_RENDERER_H 393
