RecordingCanvas.cpp revision 3e9999bd866fac71c72e6b484a9836c87c328a08
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#include "hwui/MinikinUtils.h"
24
25namespace android {
26namespace uirenderer {
27
28RecordingCanvas::RecordingCanvas(size_t width, size_t height)
29        : mState(*this)
30        , mResourceCache(ResourceCache::getInstance()) {
31    resetRecording(width, height);
32}
33
34RecordingCanvas::~RecordingCanvas() {
35    LOG_ALWAYS_FATAL_IF(mDisplayList,
36            "Destroyed a RecordingCanvas during a record!");
37}
38
39void RecordingCanvas::resetRecording(int width, int height, RenderNode* node) {
40    LOG_ALWAYS_FATAL_IF(mDisplayList,
41            "prepareDirty called a second time during a recording!");
42    mDisplayList = new DisplayList();
43
44    mState.initializeRecordingSaveStack(width, height);
45
46    mDeferredBarrierType = DeferredBarrierType::InOrder;
47}
48
49DisplayList* 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
60void 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
70SkCanvas* 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
91void RecordingCanvas::onViewportInitialized() {
92}
93
94void 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)
106int RecordingCanvas::save(SaveFlags::Flags flags) {
107    return mState.save((int) flags);
108}
109
110void RecordingCanvas::RecordingCanvas::restore() {
111    mState.restore();
112}
113
114void RecordingCanvas::restoreToCount(int saveCount) {
115    mState.restoreToCount(saveCount);
116}
117
118int 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    Rect unmappedBounds(left, top, right, bottom);
131    unmappedBounds.roundOut();
132
133    // determine clipped bounds relative to previous viewport.
134    Rect visibleBounds = unmappedBounds;
135    previous.transform->mapRect(visibleBounds);
136
137    if (CC_UNLIKELY(!clippedLayer
138            && previous.transform->rectToRect()
139            && visibleBounds.contains(previous.getRenderTargetClip()))) {
140        // unlikely case where an unclipped savelayer is recorded with a clip it can use,
141        // as none of its unaffected/unclipped area is visible
142        clippedLayer = true;
143        flags |= SaveFlags::ClipToLayer;
144    }
145
146    visibleBounds.doIntersect(previous.getRenderTargetClip());
147    visibleBounds.snapToPixelBoundaries();
148    visibleBounds.doIntersect(Rect(previous.getViewportWidth(), previous.getViewportHeight()));
149
150    // Map visible bounds back to layer space, and intersect with parameter bounds
151    Rect layerBounds = visibleBounds;
152    if (CC_LIKELY(!layerBounds.isEmpty())) {
153        // if non-empty, can safely map by the inverse transform
154        Matrix4 inverse;
155        inverse.loadInverse(*previous.transform);
156        inverse.mapRect(layerBounds);
157        layerBounds.doIntersect(unmappedBounds);
158    }
159
160    int saveValue = mState.save((int) flags);
161    Snapshot& snapshot = *mState.writableSnapshot();
162
163    // layerBounds is in original bounds space, but clipped by current recording clip
164    if (!layerBounds.isEmpty() && !unmappedBounds.isEmpty()) {
165        if (CC_LIKELY(clippedLayer)) {
166            auto previousClip = getRecordedClip(); // capture before new snapshot clip has changed
167            if (addOp(alloc().create_trivial<BeginLayerOp>(
168                    unmappedBounds,
169                    *previous.transform, // transform to *draw* with
170                    previousClip, // clip to *draw* with
171                    refPaint(paint))) >= 0) {
172                snapshot.flags |= Snapshot::kFlagIsLayer | Snapshot::kFlagIsFboLayer;
173                snapshot.initializeViewport(unmappedBounds.getWidth(), unmappedBounds.getHeight());
174                snapshot.transform->loadTranslate(-unmappedBounds.left, -unmappedBounds.top, 0.0f);
175
176                Rect clip = layerBounds;
177                clip.translate(-unmappedBounds.left, -unmappedBounds.top);
178                snapshot.resetClip(clip.left, clip.top, clip.right, clip.bottom);
179                snapshot.roundRectClipState = nullptr;
180                return saveValue;
181            }
182        } else {
183            if (addOp(alloc().create_trivial<BeginUnclippedLayerOp>(
184                    unmappedBounds,
185                    *mState.currentSnapshot()->transform,
186                    getRecordedClip(),
187                    refPaint(paint))) >= 0) {
188                snapshot.flags |= Snapshot::kFlagIsLayer;
189                return saveValue;
190            }
191        }
192    }
193
194    // Layer not needed, so skip recording it...
195    if (CC_LIKELY(clippedLayer)) {
196        // ... and set empty clip to reject inner content, if possible
197        snapshot.resetClip(0, 0, 0, 0);
198    }
199    return saveValue;
200}
201
202// Matrix
203void RecordingCanvas::rotate(float degrees) {
204    if (degrees == 0) return;
205
206    mState.rotate(degrees);
207}
208
209void RecordingCanvas::scale(float sx, float sy) {
210    if (sx == 1 && sy == 1) return;
211
212    mState.scale(sx, sy);
213}
214
215void RecordingCanvas::skew(float sx, float sy) {
216    mState.skew(sx, sy);
217}
218
219void RecordingCanvas::translate(float dx, float dy) {
220    if (dx == 0 && dy == 0) return;
221
222    mState.translate(dx, dy, 0);
223}
224
225// Clip
226bool RecordingCanvas::getClipBounds(SkRect* outRect) const {
227    *outRect = mState.getLocalClipBounds().toSkRect();
228    return !(outRect->isEmpty());
229}
230bool RecordingCanvas::quickRejectRect(float left, float top, float right, float bottom) const {
231    return mState.quickRejectConservative(left, top, right, bottom);
232}
233bool RecordingCanvas::quickRejectPath(const SkPath& path) const {
234    SkRect bounds = path.getBounds();
235    return mState.quickRejectConservative(bounds.fLeft, bounds.fTop, bounds.fRight, bounds.fBottom);
236}
237bool RecordingCanvas::clipRect(float left, float top, float right, float bottom, SkClipOp op) {
238    return mState.clipRect(left, top, right, bottom, op);
239}
240bool RecordingCanvas::clipPath(const SkPath* path, SkClipOp op) {
241    return mState.clipPath(path, op);
242}
243
244// ----------------------------------------------------------------------------
245// android/graphics/Canvas draw operations
246// ----------------------------------------------------------------------------
247void RecordingCanvas::drawColor(int color, SkBlendMode mode) {
248    addOp(alloc().create_trivial<ColorOp>(
249            getRecordedClip(),
250            color,
251            mode));
252}
253
254void RecordingCanvas::drawPaint(const SkPaint& paint) {
255    SkRect bounds;
256    if (getClipBounds(&bounds)) {
257        drawRect(bounds.fLeft, bounds.fTop, bounds.fRight, bounds.fBottom, paint);
258    }
259}
260
261static Rect calcBoundsOfPoints(const float* points, int floatCount) {
262    Rect unmappedBounds(points[0], points[1], points[0], points[1]);
263    for (int i = 2; i < floatCount; i += 2) {
264        unmappedBounds.expandToCover(points[i], points[i + 1]);
265    }
266    return unmappedBounds;
267}
268
269// Geometry
270void RecordingCanvas::drawPoints(const float* points, int floatCount, const SkPaint& paint) {
271    if (CC_UNLIKELY(floatCount < 2 || PaintUtils::paintWillNotDraw(paint))) return;
272    floatCount &= ~0x1; // round down to nearest two
273
274    addOp(alloc().create_trivial<PointsOp>(
275            calcBoundsOfPoints(points, floatCount),
276            *mState.currentSnapshot()->transform,
277            getRecordedClip(),
278            refPaint(&paint), refBuffer<float>(points, floatCount), floatCount));
279}
280
281void RecordingCanvas::drawLines(const float* points, int floatCount, const SkPaint& paint) {
282    if (CC_UNLIKELY(floatCount < 4 || PaintUtils::paintWillNotDraw(paint))) return;
283    floatCount &= ~0x3; // round down to nearest four
284
285    addOp(alloc().create_trivial<LinesOp>(
286            calcBoundsOfPoints(points, floatCount),
287            *mState.currentSnapshot()->transform,
288            getRecordedClip(),
289            refPaint(&paint), refBuffer<float>(points, floatCount), floatCount));
290}
291
292void RecordingCanvas::drawRect(float left, float top, float right, float bottom, const SkPaint& paint) {
293    if (CC_UNLIKELY(PaintUtils::paintWillNotDraw(paint))) return;
294
295    addOp(alloc().create_trivial<RectOp>(
296            Rect(left, top, right, bottom),
297            *(mState.currentSnapshot()->transform),
298            getRecordedClip(),
299            refPaint(&paint)));
300}
301
302void RecordingCanvas::drawSimpleRects(const float* rects, int vertexCount, const SkPaint* paint) {
303    if (rects == nullptr) return;
304
305    Vertex* rectData = (Vertex*) mDisplayList->allocator.create_trivial_array<Vertex>(vertexCount);
306    Vertex* vertex = rectData;
307
308    float left = FLT_MAX;
309    float top = FLT_MAX;
310    float right = FLT_MIN;
311    float bottom = FLT_MIN;
312    for (int index = 0; index < vertexCount; index += 4) {
313        float l = rects[index + 0];
314        float t = rects[index + 1];
315        float r = rects[index + 2];
316        float b = rects[index + 3];
317
318        Vertex::set(vertex++, l, t);
319        Vertex::set(vertex++, r, t);
320        Vertex::set(vertex++, l, b);
321        Vertex::set(vertex++, r, b);
322
323        left = std::min(left, l);
324        top = std::min(top, t);
325        right = std::max(right, r);
326        bottom = std::max(bottom, b);
327    }
328    addOp(alloc().create_trivial<SimpleRectsOp>(
329            Rect(left, top, right, bottom),
330            *(mState.currentSnapshot()->transform),
331            getRecordedClip(),
332            refPaint(paint), rectData, vertexCount));
333}
334
335void RecordingCanvas::drawRegion(const SkRegion& region, const SkPaint& paint) {
336    if (CC_UNLIKELY(PaintUtils::paintWillNotDraw(paint))) return;
337
338    if (paint.getStyle() == SkPaint::kFill_Style
339            && (!paint.isAntiAlias() || mState.currentTransform()->isSimple())) {
340        int count = 0;
341        Vector<float> rects;
342        SkRegion::Iterator it(region);
343        while (!it.done()) {
344            const SkIRect& r = it.rect();
345            rects.push(r.fLeft);
346            rects.push(r.fTop);
347            rects.push(r.fRight);
348            rects.push(r.fBottom);
349            count += 4;
350            it.next();
351        }
352        drawSimpleRects(rects.array(), count, &paint);
353    } else {
354        SkRegion::Iterator it(region);
355        while (!it.done()) {
356            const SkIRect& r = it.rect();
357            drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
358            it.next();
359        }
360    }
361}
362
363void RecordingCanvas::drawRoundRect(float left, float top, float right, float bottom,
364            float rx, float ry, const SkPaint& paint) {
365    if (CC_UNLIKELY(PaintUtils::paintWillNotDraw(paint))) return;
366
367    if (CC_LIKELY(MathUtils::isPositive(rx) || MathUtils::isPositive(ry))) {
368        addOp(alloc().create_trivial<RoundRectOp>(
369                Rect(left, top, right, bottom),
370                *(mState.currentSnapshot()->transform),
371                getRecordedClip(),
372                refPaint(&paint), rx, ry));
373    } else {
374        drawRect(left, top, right, bottom, paint);
375    }
376}
377
378void RecordingCanvas::drawRoundRect(
379        CanvasPropertyPrimitive* left, CanvasPropertyPrimitive* top,
380        CanvasPropertyPrimitive* right, CanvasPropertyPrimitive* bottom,
381        CanvasPropertyPrimitive* rx, CanvasPropertyPrimitive* ry,
382        CanvasPropertyPaint* paint) {
383    mDisplayList->ref(left);
384    mDisplayList->ref(top);
385    mDisplayList->ref(right);
386    mDisplayList->ref(bottom);
387    mDisplayList->ref(rx);
388    mDisplayList->ref(ry);
389    mDisplayList->ref(paint);
390    refBitmapsInShader(paint->value.getShader());
391    addOp(alloc().create_trivial<RoundRectPropsOp>(
392            *(mState.currentSnapshot()->transform),
393            getRecordedClip(),
394            &paint->value,
395            &left->value, &top->value, &right->value, &bottom->value,
396            &rx->value, &ry->value));
397}
398
399void RecordingCanvas::drawCircle(float x, float y, float radius, const SkPaint& paint) {
400    // TODO: move to Canvas.h
401    if (CC_UNLIKELY(radius <= 0 || PaintUtils::paintWillNotDraw(paint))) return;
402
403    drawOval(x - radius, y - radius, x + radius, y + radius, paint);
404}
405
406void RecordingCanvas::drawCircle(
407        CanvasPropertyPrimitive* x, CanvasPropertyPrimitive* y,
408        CanvasPropertyPrimitive* radius, CanvasPropertyPaint* paint) {
409    mDisplayList->ref(x);
410    mDisplayList->ref(y);
411    mDisplayList->ref(radius);
412    mDisplayList->ref(paint);
413    refBitmapsInShader(paint->value.getShader());
414    addOp(alloc().create_trivial<CirclePropsOp>(
415            *(mState.currentSnapshot()->transform),
416            getRecordedClip(),
417            &paint->value,
418            &x->value, &y->value, &radius->value));
419}
420
421void RecordingCanvas::drawOval(float left, float top, float right, float bottom, const SkPaint& paint) {
422    if (CC_UNLIKELY(PaintUtils::paintWillNotDraw(paint))) return;
423
424    addOp(alloc().create_trivial<OvalOp>(
425            Rect(left, top, right, bottom),
426            *(mState.currentSnapshot()->transform),
427            getRecordedClip(),
428            refPaint(&paint)));
429}
430
431void RecordingCanvas::drawArc(float left, float top, float right, float bottom,
432        float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) {
433    if (CC_UNLIKELY(PaintUtils::paintWillNotDraw(paint))) return;
434
435    if (fabs(sweepAngle) >= 360.0f) {
436        drawOval(left, top, right, bottom, paint);
437    } else {
438        addOp(alloc().create_trivial<ArcOp>(
439                Rect(left, top, right, bottom),
440                *(mState.currentSnapshot()->transform),
441                getRecordedClip(),
442                refPaint(&paint),
443                startAngle, sweepAngle, useCenter));
444    }
445}
446
447void RecordingCanvas::drawPath(const SkPath& path, const SkPaint& paint) {
448    if (CC_UNLIKELY(PaintUtils::paintWillNotDraw(paint))) return;
449
450    addOp(alloc().create_trivial<PathOp>(
451            Rect(path.getBounds()),
452            *(mState.currentSnapshot()->transform),
453            getRecordedClip(),
454            refPaint(&paint), refPath(&path)));
455}
456
457void RecordingCanvas::drawVectorDrawable(VectorDrawableRoot* tree) {
458    mDisplayList->ref(tree);
459    mDisplayList->vectorDrawables.push_back(tree);
460    addOp(alloc().create_trivial<VectorDrawableOp>(
461            tree,
462            Rect(tree->stagingProperties()->getBounds()),
463            *(mState.currentSnapshot()->transform),
464            getRecordedClip()));
465}
466
467// Bitmap-based
468void RecordingCanvas::drawBitmap(Bitmap& bitmap, float left, float top, const SkPaint* paint) {
469    save(SaveFlags::Matrix);
470    translate(left, top);
471    drawBitmap(bitmap, paint);
472    restore();
473}
474
475void RecordingCanvas::drawBitmap(Bitmap& bitmap, const SkMatrix& matrix,
476                            const SkPaint* paint) {
477    if (matrix.isIdentity()) {
478        drawBitmap(bitmap, paint);
479    } else if (!(matrix.getType() & ~(SkMatrix::kScale_Mask | SkMatrix::kTranslate_Mask))
480            && MathUtils::isPositive(matrix.getScaleX())
481            && MathUtils::isPositive(matrix.getScaleY())) {
482        // SkMatrix::isScaleTranslate() not available in L
483        SkRect src;
484        SkRect dst;
485        bitmap.getBounds(&src);
486        matrix.mapRect(&dst, src);
487        drawBitmap(bitmap, src.fLeft, src.fTop, src.fRight, src.fBottom,
488                   dst.fLeft, dst.fTop, dst.fRight, dst.fBottom, paint);
489    } else {
490        save(SaveFlags::Matrix);
491        concat(matrix);
492        drawBitmap(bitmap, paint);
493        restore();
494    }
495}
496
497void RecordingCanvas::drawBitmap(Bitmap& bitmap, float srcLeft, float srcTop,
498            float srcRight, float srcBottom, float dstLeft, float dstTop,
499            float dstRight, float dstBottom, const SkPaint* paint) {
500    if (srcLeft == 0 && srcTop == 0
501            && srcRight == bitmap.width()
502            && srcBottom == bitmap.height()
503            && (srcBottom - srcTop == dstBottom - dstTop)
504            && (srcRight - srcLeft == dstRight - dstLeft)) {
505        // transform simple rect to rect drawing case into position bitmap ops, since they merge
506        save(SaveFlags::Matrix);
507        translate(dstLeft, dstTop);
508        drawBitmap(bitmap, paint);
509        restore();
510    } else {
511        addOp(alloc().create_trivial<BitmapRectOp>(
512                Rect(dstLeft, dstTop, dstRight, dstBottom),
513                *(mState.currentSnapshot()->transform),
514                getRecordedClip(),
515                refPaint(paint), refBitmap(bitmap),
516                Rect(srcLeft, srcTop, srcRight, srcBottom)));
517    }
518}
519
520void RecordingCanvas::drawBitmapMesh(Bitmap& bitmap, int meshWidth, int meshHeight,
521            const float* vertices, const int* colors, const SkPaint* paint) {
522    int vertexCount = (meshWidth + 1) * (meshHeight + 1);
523    addOp(alloc().create_trivial<BitmapMeshOp>(
524            calcBoundsOfPoints(vertices, vertexCount * 2),
525            *(mState.currentSnapshot()->transform),
526            getRecordedClip(),
527            refPaint(paint), refBitmap(bitmap), meshWidth, meshHeight,
528            refBuffer<float>(vertices, vertexCount * 2), // 2 floats per vertex
529            refBuffer<int>(colors, vertexCount))); // 1 color per vertex
530}
531
532void RecordingCanvas::drawNinePatch(Bitmap& bitmap, const android::Res_png_9patch& patch,
533            float dstLeft, float dstTop, float dstRight, float dstBottom,
534            const SkPaint* paint) {
535    addOp(alloc().create_trivial<PatchOp>(
536            Rect(dstLeft, dstTop, dstRight, dstBottom),
537            *(mState.currentSnapshot()->transform),
538            getRecordedClip(),
539            refPaint(paint), refBitmap(bitmap), refPatch(&patch)));
540}
541
542// Text
543void RecordingCanvas::drawGlyphs(const uint16_t* glyphs, const float* positions, int glyphCount,
544            const SkPaint& paint, float x, float y, float boundsLeft, float boundsTop,
545            float boundsRight, float boundsBottom, float totalAdvance) {
546    if (!glyphs || !positions || glyphCount <= 0 || PaintUtils::paintWillNotDrawText(paint)) return;
547    glyphs = refBuffer<glyph_t>(glyphs, glyphCount);
548    positions = refBuffer<float>(positions, glyphCount * 2);
549
550    // TODO: either must account for text shadow in bounds, or record separate ops for text shadows
551    addOp(alloc().create_trivial<TextOp>(
552            Rect(boundsLeft, boundsTop, boundsRight, boundsBottom),
553            *(mState.currentSnapshot()->transform),
554            getRecordedClip(),
555            refPaint(&paint), glyphs, positions, glyphCount, x, y));
556    drawTextDecorations(x, y, totalAdvance, paint);
557}
558
559void RecordingCanvas::drawLayoutOnPath(const minikin::Layout& layout, float hOffset, float vOffset,
560        const SkPaint& paint, const SkPath& path, size_t start, size_t end) {
561    uint16_t glyphs[1];
562    for (size_t i = start; i < end; i++) {
563        glyphs[0] = layout.getGlyphId(i);
564        float x = hOffset + layout.getX(i);
565        float y = vOffset + layout.getY(i);
566        if (PaintUtils::paintWillNotDrawText(paint)) return;
567        const uint16_t* tempGlyphs = refBuffer<glyph_t>(glyphs, 1);
568        addOp(alloc().create_trivial<TextOnPathOp>(
569                *(mState.currentSnapshot()->transform),
570                getRecordedClip(),
571                refPaint(&paint), tempGlyphs, 1, refPath(&path), x, y));
572    }
573}
574
575void RecordingCanvas::drawBitmap(Bitmap& bitmap, const SkPaint* paint) {
576    addOp(alloc().create_trivial<BitmapOp>(
577            Rect(bitmap.width(), bitmap.height()),
578            *(mState.currentSnapshot()->transform),
579            getRecordedClip(),
580            refPaint(paint), refBitmap(bitmap)));
581}
582
583void RecordingCanvas::drawRenderNode(RenderNode* renderNode) {
584    auto&& stagingProps = renderNode->stagingProperties();
585    RenderNodeOp* op = alloc().create_trivial<RenderNodeOp>(
586            Rect(stagingProps.getWidth(), stagingProps.getHeight()),
587            *(mState.currentSnapshot()->transform),
588            getRecordedClip(),
589            renderNode);
590    int opIndex = addOp(op);
591    if (CC_LIKELY(opIndex >= 0)) {
592        int childIndex = mDisplayList->addChild(op);
593
594        // update the chunk's child indices
595        DisplayList::Chunk& chunk = mDisplayList->chunks.back();
596        chunk.endChildIndex = childIndex + 1;
597
598        if (renderNode->stagingProperties().isProjectionReceiver()) {
599            // use staging property, since recording on UI thread
600            mDisplayList->projectionReceiveIndex = opIndex;
601        }
602    }
603}
604
605void RecordingCanvas::drawLayer(DeferredLayerUpdater* layerHandle) {
606    // We ref the DeferredLayerUpdater due to its thread-safe ref-counting semantics.
607    mDisplayList->ref(layerHandle);
608
609    LOG_ALWAYS_FATAL_IF(layerHandle->getBackingLayerApi() != Layer::Api::OpenGL);
610    // Note that the backing layer has *not* yet been updated, so don't trust
611    // its width, height, transform, etc...!
612    addOp(alloc().create_trivial<TextureLayerOp>(
613            Rect(layerHandle->getWidth(), layerHandle->getHeight()),
614            *(mState.currentSnapshot()->transform),
615            getRecordedClip(), layerHandle));
616}
617
618void RecordingCanvas::callDrawGLFunction(Functor* functor,
619        GlFunctorLifecycleListener* listener) {
620    mDisplayList->functors.push_back({functor, listener});
621    mDisplayList->ref(listener);
622    addOp(alloc().create_trivial<FunctorOp>(
623            *(mState.currentSnapshot()->transform),
624            getRecordedClip(),
625            functor));
626}
627
628int RecordingCanvas::addOp(RecordedOp* op) {
629    // skip op with empty clip
630    if (op->localClip && op->localClip->rect.isEmpty()) {
631        // NOTE: this rejection happens after op construction/content ref-ing, so content ref'd
632        // and held by renderthread isn't affected by clip rejection.
633        // Could rewind alloc here if desired, but callers would have to not touch op afterwards.
634        return -1;
635    }
636
637    int insertIndex = mDisplayList->ops.size();
638    mDisplayList->ops.push_back(op);
639    if (mDeferredBarrierType != DeferredBarrierType::None) {
640        // op is first in new chunk
641        mDisplayList->chunks.emplace_back();
642        DisplayList::Chunk& newChunk = mDisplayList->chunks.back();
643        newChunk.beginOpIndex = insertIndex;
644        newChunk.endOpIndex = insertIndex + 1;
645        newChunk.reorderChildren = (mDeferredBarrierType == DeferredBarrierType::OutOfOrder);
646        newChunk.reorderClip = mDeferredBarrierClip;
647
648        int nextChildIndex = mDisplayList->children.size();
649        newChunk.beginChildIndex = newChunk.endChildIndex = nextChildIndex;
650        mDeferredBarrierType = DeferredBarrierType::None;
651    } else {
652        // standard case - append to existing chunk
653        mDisplayList->chunks.back().endOpIndex = insertIndex + 1;
654    }
655    return insertIndex;
656}
657
658void RecordingCanvas::refBitmapsInShader(const SkShader* shader) {
659    if (!shader) return;
660
661    // If this paint has an SkShader that has an SkBitmap add
662    // it to the bitmap pile
663    SkBitmap bitmap;
664    SkShader::TileMode xy[2];
665    if (shader->isABitmap(&bitmap, nullptr, xy)) {
666        Bitmap* hwuiBitmap = static_cast<Bitmap*>(bitmap.pixelRef());
667        refBitmap(*hwuiBitmap);
668        return;
669    }
670    SkShader::ComposeRec rec;
671    if (shader->asACompose(&rec)) {
672        refBitmapsInShader(rec.fShaderA);
673        refBitmapsInShader(rec.fShaderB);
674        return;
675    }
676}
677
678}; // namespace uirenderer
679}; // namespace android
680