libs/hwui/RecordingCanvas.cpp

   1 /*
   2  * Copyright (C) 2015 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 #include "RecordingCanvas.h"
  18
  19 #include "DeferredLayerUpdater.h"
  20 #include "RecordedOp.h"
  21 #include "RenderNode.h"
  22 #include "VectorDrawable.h"
  23
  24 namespace android {
  25 namespace uirenderer {
  26
  27 RecordingCanvas::RecordingCanvas(size_t width, size_t height)
  28         : mState(*this)
  29         , mResourceCache(ResourceCache::getInstance()) {
  30     resetRecording(width, height);
  31 }
  32
  33 RecordingCanvas::~RecordingCanvas() {
  34     LOG_ALWAYS_FATAL_IF(mDisplayList,
  35             "Destroyed a RecordingCanvas during a record!");
  36 }
  37
  38 void RecordingCanvas::resetRecording(int width, int height) {
  39     LOG_ALWAYS_FATAL_IF(mDisplayList,
  40             "prepareDirty called a second time during a recording!");
  41     mDisplayList = new DisplayList();
  42
  43     mState.initializeRecordingSaveStack(width, height);
  44
  45     mDeferredBarrierType = DeferredBarrierType::InOrder;
  46     mState.setDirtyClip(false);
  47 }
  48
  49 DisplayList* RecordingCanvas::finishRecording() {
  50     restoreToCount(1);
  51     mPaintMap.clear();
  52     mRegionMap.clear();
  53     mPathMap.clear();
  54     DisplayList* displayList = mDisplayList;
  55     mDisplayList = nullptr;
  56     mSkiaCanvasProxy.reset(nullptr);
  57     return displayList;
  58 }
  59
  60 void RecordingCanvas::insertReorderBarrier(bool enableReorder) {
  61     if (enableReorder) {
  62         mDeferredBarrierType = DeferredBarrierType::OutOfOrder;
  63         mDeferredBarrierClip = getRecordedClip();
  64     } else {
  65         mDeferredBarrierType = DeferredBarrierType::InOrder;
  66         mDeferredBarrierClip = nullptr;
  67     }
  68 }
  69
  70 SkCanvas* RecordingCanvas::asSkCanvas() {
  71     LOG_ALWAYS_FATAL_IF(!mDisplayList,
  72             "attempting to get an SkCanvas when we are not recording!");
  73     if (!mSkiaCanvasProxy) {
  74         mSkiaCanvasProxy.reset(new SkiaCanvasProxy(this));
  75     }
  76
  77     // SkCanvas instances default to identity transform, but should inherit
  78     // the state of this Canvas; if this code was in the SkiaCanvasProxy
  79     // constructor, we couldn't cache mSkiaCanvasProxy.
  80     SkMatrix parentTransform;
  81     getMatrix(&parentTransform);
  82     mSkiaCanvasProxy.get()->setMatrix(parentTransform);
  83
  84     return mSkiaCanvasProxy.get();
  85 }
  86
  87 // ----------------------------------------------------------------------------
  88 // CanvasStateClient implementation
  89 // ----------------------------------------------------------------------------
  90
  91 void RecordingCanvas::onViewportInitialized() {
  92 }
  93
  94 void RecordingCanvas::onSnapshotRestored(const Snapshot& removed, const Snapshot& restored) {
  95     if (removed.flags & Snapshot::kFlagIsFboLayer) {
  96         addOp(alloc().create_trivial<EndLayerOp>());
  97     } else if (removed.flags & Snapshot::kFlagIsLayer) {
  98         addOp(alloc().create_trivial<EndUnclippedLayerOp>());
  99     }
 100 }
 101
 102 // ----------------------------------------------------------------------------
 103 // android/graphics/Canvas state operations
 104 // ----------------------------------------------------------------------------
 105 // Save (layer)
 106 int RecordingCanvas::save(SaveFlags::Flags flags) {
 107     return mState.save((int) flags);
 108 }
 109
 110 void RecordingCanvas::RecordingCanvas::restore() {
 111     mState.restore();
 112 }
 113
 114 void RecordingCanvas::restoreToCount(int saveCount) {
 115     mState.restoreToCount(saveCount);
 116 }
 117
 118 int RecordingCanvas::saveLayer(float left, float top, float right, float bottom,
 119         const SkPaint* paint, SaveFlags::Flags flags) {
 120     // force matrix/clip isolation for layer
 121     flags |= SaveFlags::MatrixClip;
 122     bool clippedLayer = flags & SaveFlags::ClipToLayer;
 123
 124     const Snapshot& previous = *mState.currentSnapshot();
 125
 126     // initialize the snapshot as though it almost represents an FBO layer so deferred draw
 127     // operations will be able to store and restore the current clip and transform info, and
 128     // quick rejection will be correct (for display lists)
 129
 130     const Rect unmappedBounds(left, top, right, bottom);
 131
 132     // determine clipped bounds relative to previous viewport.
 133     Rect visibleBounds = unmappedBounds;
 134     previous.transform->mapRect(visibleBounds);
 135
 136     if (CC_UNLIKELY(!clippedLayer
 137             && previous.transform->rectToRect()
 138             && visibleBounds.contains(previous.getRenderTargetClip()))) {
 139         // unlikely case where an unclipped savelayer is recorded with a clip it can use,
 140         // as none of its unaffected/unclipped area is visible
 141         clippedLayer = true;
 142         flags |= SaveFlags::ClipToLayer;
 143     }
 144
 145     visibleBounds.doIntersect(previous.getRenderTargetClip());
 146     visibleBounds.snapToPixelBoundaries();
 147     visibleBounds.doIntersect(Rect(previous.getViewportWidth(), previous.getViewportHeight()));
 148
 149     // Map visible bounds back to layer space, and intersect with parameter bounds
 150     Rect layerBounds = visibleBounds;
 151     Matrix4 inverse;
 152     inverse.loadInverse(*previous.transform);
 153     inverse.mapRect(layerBounds);
 154     layerBounds.doIntersect(unmappedBounds);
 155
 156     int saveValue = mState.save((int) flags);
 157     Snapshot& snapshot = *mState.writableSnapshot();
 158
 159     // layerBounds is in original bounds space, but clipped by current recording clip
 160     if (layerBounds.isEmpty() || unmappedBounds.isEmpty()) {
 161         // Don't bother recording layer, since it's been rejected
 162         if (CC_LIKELY(clippedLayer)) {
 163             snapshot.resetClip(0, 0, 0, 0);
 164         }
 165         return saveValue;
 166     }
 167
 168     if (CC_LIKELY(clippedLayer)) {
 169         auto previousClip = getRecordedClip(); // note: done before new snapshot's clip has changed
 170
 171         snapshot.flags |= Snapshot::kFlagIsLayer | Snapshot::kFlagIsFboLayer;
 172         snapshot.initializeViewport(unmappedBounds.getWidth(), unmappedBounds.getHeight());
 173         snapshot.transform->loadTranslate(-unmappedBounds.left, -unmappedBounds.top, 0.0f);
 174
 175         Rect clip = layerBounds;
 176         clip.translate(-unmappedBounds.left, -unmappedBounds.top);
 177         snapshot.resetClip(clip.left, clip.top, clip.right, clip.bottom);
 178         snapshot.roundRectClipState = nullptr;
 179
 180         addOp(alloc().create_trivial<BeginLayerOp>(
 181                 unmappedBounds,
 182                 *previous.transform, // transform to *draw* with
 183                 previousClip, // clip to *draw* with
 184                 refPaint(paint)));
 185     } else {
 186         snapshot.flags |= Snapshot::kFlagIsLayer;
 187
 188         addOp(alloc().create_trivial<BeginUnclippedLayerOp>(
 189                 unmappedBounds,
 190                 *mState.currentSnapshot()->transform,
 191                 getRecordedClip(),
 192                 refPaint(paint)));
 193     }
 194
 195     return saveValue;
 196 }
 197
 198 // Matrix
 199 void RecordingCanvas::rotate(float degrees) {
 200     if (degrees == 0) return;
 201
 202     mState.rotate(degrees);
 203 }
 204
 205 void RecordingCanvas::scale(float sx, float sy) {
 206     if (sx == 1 && sy == 1) return;
 207
 208     mState.scale(sx, sy);
 209 }
 210
 211 void RecordingCanvas::skew(float sx, float sy) {
 212     mState.skew(sx, sy);
 213 }
 214
 215 void RecordingCanvas::translate(float dx, float dy) {
 216     if (dx == 0 && dy == 0) return;
 217
 218     mState.translate(dx, dy, 0);
 219 }
 220
 221 // Clip
 222 bool RecordingCanvas::getClipBounds(SkRect* outRect) const {
 223     *outRect = mState.getLocalClipBounds().toSkRect();
 224     return !(outRect->isEmpty());
 225 }
 226 bool RecordingCanvas::quickRejectRect(float left, float top, float right, float bottom) const {
 227     return mState.quickRejectConservative(left, top, right, bottom);
 228 }
 229 bool RecordingCanvas::quickRejectPath(const SkPath& path) const {
 230     SkRect bounds = path.getBounds();
 231     return mState.quickRejectConservative(bounds.fLeft, bounds.fTop, bounds.fRight, bounds.fBottom);
 232 }
 233 bool RecordingCanvas::clipRect(float left, float top, float right, float bottom, SkRegion::Op op) {
 234     return mState.clipRect(left, top, right, bottom, op);
 235 }
 236 bool RecordingCanvas::clipPath(const SkPath* path, SkRegion::Op op) {
 237     return mState.clipPath(path, op);
 238 }
 239 bool RecordingCanvas::clipRegion(const SkRegion* region, SkRegion::Op op) {
 240     return mState.clipRegion(region, op);
 241 }
 242
 243 // ----------------------------------------------------------------------------
 244 // android/graphics/Canvas draw operations
 245 // ----------------------------------------------------------------------------
 246 void RecordingCanvas::drawColor(int color, SkXfermode::Mode mode) {
 247     addOp(alloc().create_trivial<ColorOp>(
 248             getRecordedClip(),
 249             color,
 250             mode));
 251 }
 252
 253 void RecordingCanvas::drawPaint(const SkPaint& paint) {
 254     SkRect bounds;
 255     if (getClipBounds(&bounds)) {
 256         drawRect(bounds.fLeft, bounds.fTop, bounds.fRight, bounds.fBottom, paint);
 257     }
 258 }
 259
 260 static Rect calcBoundsOfPoints(const float* points, int floatCount) {
 261     Rect unmappedBounds(points[0], points[1], points[0], points[1]);
 262     for (int i = 2; i < floatCount; i += 2) {
 263         unmappedBounds.expandToCover(points[i], points[i + 1]);
 264     }
 265     return unmappedBounds;
 266 }
 267
 268 // Geometry
 269 void RecordingCanvas::drawPoints(const float* points, int floatCount, const SkPaint& paint) {
 270     if (floatCount < 2) return;
 271     floatCount &= ~0x1; // round down to nearest two
 272
 273     addOp(alloc().create_trivial<PointsOp>(
 274             calcBoundsOfPoints(points, floatCount),
 275             *mState.currentSnapshot()->transform,
 276             getRecordedClip(),
 277             refPaint(&paint), refBuffer<float>(points, floatCount), floatCount));
 278 }
 279
 280 void RecordingCanvas::drawLines(const float* points, int floatCount, const SkPaint& paint) {
 281     if (floatCount < 4) return;
 282     floatCount &= ~0x3; // round down to nearest four
 283
 284     addOp(alloc().create_trivial<LinesOp>(
 285             calcBoundsOfPoints(points, floatCount),
 286             *mState.currentSnapshot()->transform,
 287             getRecordedClip(),
 288             refPaint(&paint), refBuffer<float>(points, floatCount), floatCount));
 289 }
 290
 291 void RecordingCanvas::drawRect(float left, float top, float right, float bottom, const SkPaint& paint) {
 292     addOp(alloc().create_trivial<RectOp>(
 293             Rect(left, top, right, bottom),
 294             *(mState.currentSnapshot()->transform),
 295             getRecordedClip(),
 296             refPaint(&paint)));
 297 }
 298
 299 void RecordingCanvas::drawSimpleRects(const float* rects, int vertexCount, const SkPaint* paint) {
 300     if (rects == nullptr) return;
 301
 302     Vertex* rectData = (Vertex*) mDisplayList->allocator.create_trivial_array<Vertex>(vertexCount);
 303     Vertex* vertex = rectData;
 304
 305     float left = FLT_MAX;
 306     float top = FLT_MAX;
 307     float right = FLT_MIN;
 308     float bottom = FLT_MIN;
 309     for (int index = 0; index < vertexCount; index += 4) {
 310         float l = rects[index + 0];
 311         float t = rects[index + 1];
 312         float r = rects[index + 2];
 313         float b = rects[index + 3];
 314
 315         Vertex::set(vertex++, l, t);
 316         Vertex::set(vertex++, r, t);
 317         Vertex::set(vertex++, l, b);
 318         Vertex::set(vertex++, r, b);
 319
 320         left = std::min(left, l);
 321         top = std::min(top, t);
 322         right = std::max(right, r);
 323         bottom = std::max(bottom, b);
 324     }
 325     addOp(alloc().create_trivial<SimpleRectsOp>(
 326             Rect(left, top, right, bottom),
 327             *(mState.currentSnapshot()->transform),
 328             getRecordedClip(),
 329             refPaint(paint), rectData, vertexCount));
 330 }
 331
 332 void RecordingCanvas::drawRegion(const SkRegion& region, const SkPaint& paint) {
 333     if (paint.getStyle() == SkPaint::kFill_Style
 334             && (!paint.isAntiAlias() || mState.currentTransform()->isSimple())) {
 335         int count = 0;
 336         Vector<float> rects;
 337         SkRegion::Iterator it(region);
 338         while (!it.done()) {
 339             const SkIRect& r = it.rect();
 340             rects.push(r.fLeft);
 341             rects.push(r.fTop);
 342             rects.push(r.fRight);
 343             rects.push(r.fBottom);
 344             count += 4;
 345             it.next();
 346         }
 347         drawSimpleRects(rects.array(), count, &paint);
 348     } else {
 349         SkRegion::Iterator it(region);
 350         while (!it.done()) {
 351             const SkIRect& r = it.rect();
 352             drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
 353             it.next();
 354         }
 355     }
 356 }
 357 void RecordingCanvas::drawRoundRect(float left, float top, float right, float bottom,
 358             float rx, float ry, const SkPaint& paint) {
 359     if (CC_LIKELY(MathUtils::isPositive(rx) || MathUtils::isPositive(ry))) {
 360         addOp(alloc().create_trivial<RoundRectOp>(
 361                 Rect(left, top, right, bottom),
 362                 *(mState.currentSnapshot()->transform),
 363                 getRecordedClip(),
 364                 refPaint(&paint), rx, ry));
 365     } else {
 366         drawRect(left, top, right, bottom, paint);
 367     }
 368 }
 369
 370 void RecordingCanvas::drawRoundRect(
 371         CanvasPropertyPrimitive* left, CanvasPropertyPrimitive* top,
 372         CanvasPropertyPrimitive* right, CanvasPropertyPrimitive* bottom,
 373         CanvasPropertyPrimitive* rx, CanvasPropertyPrimitive* ry,
 374         CanvasPropertyPaint* paint) {
 375     mDisplayList->ref(left);
 376     mDisplayList->ref(top);
 377     mDisplayList->ref(right);
 378     mDisplayList->ref(bottom);
 379     mDisplayList->ref(rx);
 380     mDisplayList->ref(ry);
 381     mDisplayList->ref(paint);
 382     refBitmapsInShader(paint->value.getShader());
 383     addOp(alloc().create_trivial<RoundRectPropsOp>(
 384             *(mState.currentSnapshot()->transform),
 385             getRecordedClip(),
 386             &paint->value,
 387             &left->value, &top->value, &right->value, &bottom->value,
 388             &rx->value, &ry->value));
 389 }
 390
 391 void RecordingCanvas::drawCircle(float x, float y, float radius, const SkPaint& paint) {
 392     // TODO: move to Canvas.h
 393     if (radius <= 0) return;
 394     drawOval(x - radius, y - radius, x + radius, y + radius, paint);
 395 }
 396
 397 void RecordingCanvas::drawCircle(
 398         CanvasPropertyPrimitive* x, CanvasPropertyPrimitive* y,
 399         CanvasPropertyPrimitive* radius, CanvasPropertyPaint* paint) {
 400     mDisplayList->ref(x);
 401     mDisplayList->ref(y);
 402     mDisplayList->ref(radius);
 403     mDisplayList->ref(paint);
 404     refBitmapsInShader(paint->value.getShader());
 405     addOp(alloc().create_trivial<CirclePropsOp>(
 406             *(mState.currentSnapshot()->transform),
 407             getRecordedClip(),
 408             &paint->value,
 409             &x->value, &y->value, &radius->value));
 410 }
 411
 412 void RecordingCanvas::drawOval(float left, float top, float right, float bottom, const SkPaint& paint) {
 413     addOp(alloc().create_trivial<OvalOp>(
 414             Rect(left, top, right, bottom),
 415             *(mState.currentSnapshot()->transform),
 416             getRecordedClip(),
 417             refPaint(&paint)));
 418 }
 419
 420 void RecordingCanvas::drawArc(float left, float top, float right, float bottom,
 421         float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) {
 422     if (fabs(sweepAngle) >= 360.0f) {
 423         drawOval(left, top, right, bottom, paint);
 424     } else {
 425         addOp(alloc().create_trivial<ArcOp>(
 426                 Rect(left, top, right, bottom),
 427                 *(mState.currentSnapshot()->transform),
 428                 getRecordedClip(),
 429                 refPaint(&paint),
 430                 startAngle, sweepAngle, useCenter));
 431     }
 432 }
 433
 434 void RecordingCanvas::drawPath(const SkPath& path, const SkPaint& paint) {
 435     addOp(alloc().create_trivial<PathOp>(
 436             Rect(path.getBounds()),
 437             *(mState.currentSnapshot()->transform),
 438             getRecordedClip(),
 439             refPaint(&paint), refPath(&path)));
 440 }
 441
 442 void RecordingCanvas::drawVectorDrawable(VectorDrawableRoot* tree) {
 443     mDisplayList->pushStagingFunctors.push_back(tree->getFunctor());
 444     mDisplayList->ref(tree);
 445     addOp(alloc().create_trivial<VectorDrawableOp>(
 446             tree,
 447             Rect(tree->stagingProperties()->getBounds()),
 448             *(mState.currentSnapshot()->transform),
 449             getRecordedClip()));
 450 }
 451
 452 // Bitmap-based
 453 void RecordingCanvas::drawBitmap(const SkBitmap& bitmap, float left, float top, const SkPaint* paint) {
 454     save(SaveFlags::Matrix);
 455     translate(left, top);
 456     drawBitmap(&bitmap, paint);
 457     restore();
 458 }
 459
 460 void RecordingCanvas::drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix,
 461                             const SkPaint* paint) {
 462     if (matrix.isIdentity()) {
 463         drawBitmap(&bitmap, paint);
 464     } else if (!(matrix.getType() & ~(SkMatrix::kScale_Mask | SkMatrix::kTranslate_Mask))
 465             && MathUtils::isPositive(matrix.getScaleX())
 466             && MathUtils::isPositive(matrix.getScaleY())) {
 467         // SkMatrix::isScaleTranslate() not available in L
 468         SkRect src;
 469         SkRect dst;
 470         bitmap.getBounds(&src);
 471         matrix.mapRect(&dst, src);
 472         drawBitmap(bitmap, src.fLeft, src.fTop, src.fRight, src.fBottom,
 473                    dst.fLeft, dst.fTop, dst.fRight, dst.fBottom, paint);
 474     } else {
 475         save(SaveFlags::Matrix);
 476         concat(matrix);
 477         drawBitmap(&bitmap, paint);
 478         restore();
 479     }
 480 }
 481
 482 void RecordingCanvas::drawBitmap(const SkBitmap& bitmap, float srcLeft, float srcTop,
 483             float srcRight, float srcBottom, float dstLeft, float dstTop,
 484             float dstRight, float dstBottom, const SkPaint* paint) {
 485     if (srcLeft == 0 && srcTop == 0
 486             && srcRight == bitmap.width()
 487             && srcBottom == bitmap.height()
 488             && (srcBottom - srcTop == dstBottom - dstTop)
 489             && (srcRight - srcLeft == dstRight - dstLeft)) {
 490         // transform simple rect to rect drawing case into position bitmap ops, since they merge
 491         save(SaveFlags::Matrix);
 492         translate(dstLeft, dstTop);
 493         drawBitmap(&bitmap, paint);
 494         restore();
 495     } else {
 496         addOp(alloc().create_trivial<BitmapRectOp>(
 497                 Rect(dstLeft, dstTop, dstRight, dstBottom),
 498                 *(mState.currentSnapshot()->transform),
 499                 getRecordedClip(),
 500                 refPaint(paint), refBitmap(bitmap),
 501                 Rect(srcLeft, srcTop, srcRight, srcBottom)));
 502     }
 503 }
 504
 505 void RecordingCanvas::drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight,
 506             const float* vertices, const int* colors, const SkPaint* paint) {
 507     int vertexCount = (meshWidth + 1) * (meshHeight + 1);
 508     addOp(alloc().create_trivial<BitmapMeshOp>(
 509             calcBoundsOfPoints(vertices, vertexCount * 2),
 510             *(mState.currentSnapshot()->transform),
 511             getRecordedClip(),
 512             refPaint(paint), refBitmap(bitmap), meshWidth, meshHeight,
 513             refBuffer<float>(vertices, vertexCount * 2), // 2 floats per vertex
 514             refBuffer<int>(colors, vertexCount))); // 1 color per vertex
 515 }
 516
 517 void RecordingCanvas::drawNinePatch(const SkBitmap& bitmap, const android::Res_png_9patch& patch,
 518             float dstLeft, float dstTop, float dstRight, float dstBottom,
 519             const SkPaint* paint) {
 520     addOp(alloc().create_trivial<PatchOp>(
 521             Rect(dstLeft, dstTop, dstRight, dstBottom),
 522             *(mState.currentSnapshot()->transform),
 523             getRecordedClip(),
 524             refPaint(paint), refBitmap(bitmap), refPatch(&patch)));
 525 }
 526
 527 // Text
 528 void RecordingCanvas::drawGlyphs(const uint16_t* glyphs, const float* positions, int glyphCount,
 529             const SkPaint& paint, float x, float y, float boundsLeft, float boundsTop,
 530             float boundsRight, float boundsBottom, float totalAdvance) {
 531     if (!glyphs || !positions || glyphCount <= 0 || PaintUtils::paintWillNotDrawText(paint)) return;
 532     glyphs = refBuffer<glyph_t>(glyphs, glyphCount);
 533     positions = refBuffer<float>(positions, glyphCount * 2);
 534
 535     // TODO: either must account for text shadow in bounds, or record separate ops for text shadows
 536     addOp(alloc().create_trivial<TextOp>(
 537             Rect(boundsLeft, boundsTop, boundsRight, boundsBottom),
 538             *(mState.currentSnapshot()->transform),
 539             getRecordedClip(),
 540             refPaint(&paint), glyphs, positions, glyphCount, x, y));
 541     drawTextDecorations(x, y, totalAdvance, paint);
 542 }
 543
 544 void RecordingCanvas::drawGlyphsOnPath(const uint16_t* glyphs, int glyphCount, const SkPath& path,
 545             float hOffset, float vOffset, const SkPaint& paint) {
 546     if (!glyphs || glyphCount <= 0 || PaintUtils::paintWillNotDrawText(paint)) return;
 547     glyphs = refBuffer<glyph_t>(glyphs, glyphCount);
 548     addOp(alloc().create_trivial<TextOnPathOp>(
 549             *(mState.currentSnapshot()->transform),
 550             getRecordedClip(),
 551             refPaint(&paint), glyphs, glyphCount, refPath(&path), hOffset, vOffset));
 552 }
 553
 554 void RecordingCanvas::drawBitmap(const SkBitmap* bitmap, const SkPaint* paint) {
 555     addOp(alloc().create_trivial<BitmapOp>(
 556             Rect(bitmap->width(), bitmap->height()),
 557             *(mState.currentSnapshot()->transform),
 558             getRecordedClip(),
 559             refPaint(paint), refBitmap(*bitmap)));
 560 }
 561
 562 void RecordingCanvas::drawRenderNode(RenderNode* renderNode) {
 563     auto&& stagingProps = renderNode->stagingProperties();
 564     RenderNodeOp* op = alloc().create_trivial<RenderNodeOp>(
 565             Rect(stagingProps.getWidth(), stagingProps.getHeight()),
 566             *(mState.currentSnapshot()->transform),
 567             getRecordedClip(),
 568             renderNode);
 569     int opIndex = addOp(op);
 570     if (CC_LIKELY(opIndex >= 0)) {
 571         int childIndex = mDisplayList->addChild(op);
 572
 573         // update the chunk's child indices
 574         DisplayList::Chunk& chunk = mDisplayList->chunks.back();
 575         chunk.endChildIndex = childIndex + 1;
 576
 577         if (renderNode->stagingProperties().isProjectionReceiver()) {
 578             // use staging property, since recording on UI thread
 579             mDisplayList->projectionReceiveIndex = opIndex;
 580         }
 581     }
 582 }
 583
 584 void RecordingCanvas::drawLayer(DeferredLayerUpdater* layerHandle) {
 585     // We ref the DeferredLayerUpdater due to its thread-safe ref-counting semantics.
 586     mDisplayList->ref(layerHandle);
 587
 588     // Note that the backing layer has *not* yet been updated, so don't trust
 589     // its width, height, transform, etc...!
 590     addOp(alloc().create_trivial<TextureLayerOp>(
 591             Rect(layerHandle->getWidth(), layerHandle->getHeight()),
 592             *(mState.currentSnapshot()->transform),
 593             getRecordedClip(),
 594             layerHandle->backingLayer()));
 595 }
 596
 597 void RecordingCanvas::callDrawGLFunction(Functor* functor,
 598         GlFunctorLifecycleListener* listener) {
 599     mDisplayList->functors.push_back({functor, listener});
 600     mDisplayList->ref(listener);
 601     addOp(alloc().create_trivial<FunctorOp>(
 602             *(mState.currentSnapshot()->transform),
 603             getRecordedClip(),
 604             functor));
 605 }
 606
 607 size_t RecordingCanvas::addOp(RecordedOp* op) {
 608     // skip op with empty clip
 609     if (op->localClip && op->localClip->rect.isEmpty()) {
 610         // NOTE: this rejection happens after op construction/content ref-ing, so content ref'd
 611         // and held by renderthread isn't affected by clip rejection.
 612         // Could rewind alloc here if desired, but callers would have to not touch op afterwards.
 613         return -1;
 614     }
 615
 616     int insertIndex = mDisplayList->ops.size();
 617     mDisplayList->ops.push_back(op);
 618     if (mDeferredBarrierType != DeferredBarrierType::None) {
 619         // op is first in new chunk
 620         mDisplayList->chunks.emplace_back();
 621         DisplayList::Chunk& newChunk = mDisplayList->chunks.back();
 622         newChunk.beginOpIndex = insertIndex;
 623         newChunk.endOpIndex = insertIndex + 1;
 624         newChunk.reorderChildren = (mDeferredBarrierType == DeferredBarrierType::OutOfOrder);
 625         newChunk.reorderClip = mDeferredBarrierClip;
 626
 627         int nextChildIndex = mDisplayList->children.size();
 628         newChunk.beginChildIndex = newChunk.endChildIndex = nextChildIndex;
 629         mDeferredBarrierType = DeferredBarrierType::None;
 630     } else {
 631         // standard case - append to existing chunk
 632         mDisplayList->chunks.back().endOpIndex = insertIndex + 1;
 633     }
 634     return insertIndex;
 635 }
 636
 637 void RecordingCanvas::refBitmapsInShader(const SkShader* shader) {
 638     if (!shader) return;
 639
 640     // If this paint has an SkShader that has an SkBitmap add
 641     // it to the bitmap pile
 642     SkBitmap bitmap;
 643     SkShader::TileMode xy[2];
 644     if (shader->isABitmap(&bitmap, nullptr, xy)) {
 645         refBitmap(bitmap);
 646         return;
 647     }
 648     SkShader::ComposeRec rec;
 649     if (shader->asACompose(&rec)) {
 650         refBitmapsInShader(rec.fShaderA);
 651         refBitmapsInShader(rec.fShaderB);
 652         return;
 653     }
 654 }
 655
 656 }; // namespace uirenderer
 657 }; // namespace android