2 * Copyright (C) 2013 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #include <utils/Trace.h>
19 #include <ui/Region.h>
23 #include "DeferredDisplayList.h"
24 #include "DisplayListOp.h"
25 #include "OpenGLRenderer.h"
26 #include "Properties.h"
27 #include "utils/MathUtils.h"
30 #define DEFER_LOGD(...) ALOGD(__VA_ARGS__)
32 #define DEFER_LOGD(...)
36 namespace uirenderer {
38 // Depth of the save stack at the beginning of batch playback at flush time
39 #define FLUSH_SAVE_STACK_DEPTH 2
41 #define DEBUG_COLOR_BARRIER 0x1f000000
42 #define DEBUG_COLOR_MERGEDBATCH 0x5f7f7fff
43 #define DEBUG_COLOR_MERGEDBATCH_SOLO 0x5f7fff7f
45 static bool avoidOverdraw() {
46 // Don't avoid overdraw when visualizing it, since that makes it harder to
47 // debug where it's coming from, and when the problem occurs.
48 return !Properties::debugOverdraw;
51 /////////////////////////////////////////////////////////////////////////////////
53 /////////////////////////////////////////////////////////////////////////////////
57 virtual void replay(OpenGLRenderer& renderer, Rect& dirty, int index) = 0;
59 virtual bool purelyDrawBatch() { return false; }
60 virtual bool coversBounds(const Rect& bounds) { return false; }
63 class DrawBatch : public Batch {
65 DrawBatch(const DeferInfo& deferInfo) : mAllOpsOpaque(true),
66 mBatchId(deferInfo.batchId), mMergeId(deferInfo.mergeId) {
70 virtual ~DrawBatch() { mOps.clear(); }
72 virtual void add(DrawOp* op, const DeferredDisplayState* state, bool opaqueOverBounds) {
73 // NOTE: ignore empty bounds special case, since we don't merge across those ops
74 mBounds.unionWith(state->mBounds);
75 mAllOpsOpaque &= opaqueOverBounds;
76 mOps.push_back(OpStatePair(op, state));
79 bool intersects(const Rect& rect) {
80 if (!rect.intersects(mBounds)) return false;
82 for (unsigned int i = 0; i < mOps.size(); i++) {
83 if (rect.intersects(mOps[i].state->mBounds)) {
85 DEFER_LOGD("op intersects with op %p with bounds %f %f %f %f:", mOps[i].op,
86 mOps[i].state->mBounds.left, mOps[i].state->mBounds.top,
87 mOps[i].state->mBounds.right, mOps[i].state->mBounds.bottom);
88 mOps[i].op->output(2);
96 virtual void replay(OpenGLRenderer& renderer, Rect& dirty, int index) override {
97 DEFER_LOGD("%d replaying DrawBatch %p, with %d ops (batch id %x, merge id %p)",
98 index, this, mOps.size(), getBatchId(), getMergeId());
100 for (unsigned int i = 0; i < mOps.size(); i++) {
101 DrawOp* op = mOps[i].op;
102 const DeferredDisplayState* state = mOps[i].state;
103 renderer.restoreDisplayState(*state);
105 #if DEBUG_DISPLAY_LIST_OPS_AS_EVENTS
106 renderer.eventMark(op->name());
108 op->applyDraw(renderer, dirty);
110 #if DEBUG_MERGE_BEHAVIOR
111 const Rect& bounds = state->mBounds;
112 int batchColor = 0x1f000000;
113 if (getBatchId() & 0x1) batchColor |= 0x0000ff;
114 if (getBatchId() & 0x2) batchColor |= 0x00ff00;
115 if (getBatchId() & 0x4) batchColor |= 0xff0000;
116 renderer.drawScreenSpaceColorRect(bounds.left, bounds.top, bounds.right, bounds.bottom,
122 virtual bool purelyDrawBatch() override { return true; }
124 virtual bool coversBounds(const Rect& bounds) override {
125 if (CC_LIKELY(!mAllOpsOpaque || !mBounds.contains(bounds) || count() == 1)) return false;
127 Region uncovered(android::Rect(bounds.left, bounds.top, bounds.right, bounds.bottom));
128 for (unsigned int i = 0; i < mOps.size(); i++) {
129 const Rect &r = mOps[i].state->mBounds;
130 uncovered.subtractSelf(android::Rect(r.left, r.top, r.right, r.bottom));
132 return uncovered.isEmpty();
135 inline int getBatchId() const { return mBatchId; }
136 inline mergeid_t getMergeId() const { return mMergeId; }
137 inline int count() const { return mOps.size(); }
140 std::vector<OpStatePair> mOps;
141 Rect mBounds; // union of bounds of contained ops
148 class MergingDrawBatch : public DrawBatch {
150 MergingDrawBatch(DeferInfo& deferInfo, int width, int height) :
151 DrawBatch(deferInfo), mClipRect(width, height),
152 mClipSideFlags(kClipSide_None) {}
155 * Helper for determining if a new op can merge with a MergingDrawBatch based on their bounds
156 * and clip side flags. Positive bounds delta means new bounds fit in old.
158 static inline bool checkSide(const int currentFlags, const int newFlags, const int side,
160 bool currentClipExists = currentFlags & side;
161 bool newClipExists = newFlags & side;
163 // if current is clipped, we must be able to fit new bounds in current
164 if (boundsDelta > 0 && currentClipExists) return false;
166 // if new is clipped, we must be able to fit current bounds in new
167 if (boundsDelta < 0 && newClipExists) return false;
173 * Checks if a (mergeable) op can be merged into this batch
175 * If true, the op's multiDraw must be guaranteed to handle both ops simultaneously, so it is
176 * important to consider all paint attributes used in the draw calls in deciding both a) if an
177 * op tries to merge at all, and b) if the op can merge with another set of ops
179 * False positives can lead to information from the paints of subsequent merged operations being
180 * dropped, so we make simplifying qualifications on the ops that can merge, per op type.
182 bool canMergeWith(const DrawOp* op, const DeferredDisplayState* state) {
183 bool isTextBatch = getBatchId() == DeferredDisplayList::kOpBatch_Text ||
184 getBatchId() == DeferredDisplayList::kOpBatch_ColorText;
186 // Overlapping other operations is only allowed for text without shadow. For other ops,
187 // multiDraw isn't guaranteed to overdraw correctly
188 if (!isTextBatch || op->hasTextShadow()) {
189 if (intersects(state->mBounds)) return false;
191 const DeferredDisplayState* lhs = state;
192 const DeferredDisplayState* rhs = mOps[0].state;
194 if (!MathUtils::areEqual(lhs->mAlpha, rhs->mAlpha)) return false;
196 // Identical round rect clip state means both ops will clip in the same way, or not at all.
197 // As the state objects are const, we can compare their pointers to determine mergeability
198 if (lhs->mRoundRectClipState != rhs->mRoundRectClipState) return false;
199 if (lhs->mProjectionPathMask != rhs->mProjectionPathMask) return false;
201 /* Clipping compatibility check
203 * Exploits the fact that if a op or batch is clipped on a side, its bounds will equal its
204 * clip for that side.
206 const int currentFlags = mClipSideFlags;
207 const int newFlags = state->mClipSideFlags;
208 if (currentFlags != kClipSide_None || newFlags != kClipSide_None) {
209 const Rect& opBounds = state->mBounds;
210 float boundsDelta = mBounds.left - opBounds.left;
211 if (!checkSide(currentFlags, newFlags, kClipSide_Left, boundsDelta)) return false;
212 boundsDelta = mBounds.top - opBounds.top;
213 if (!checkSide(currentFlags, newFlags, kClipSide_Top, boundsDelta)) return false;
215 // right and bottom delta calculation reversed to account for direction
216 boundsDelta = opBounds.right - mBounds.right;
217 if (!checkSide(currentFlags, newFlags, kClipSide_Right, boundsDelta)) return false;
218 boundsDelta = opBounds.bottom - mBounds.bottom;
219 if (!checkSide(currentFlags, newFlags, kClipSide_Bottom, boundsDelta)) return false;
222 // if paints are equal, then modifiers + paint attribs don't need to be compared
223 if (op->mPaint == mOps[0].op->mPaint) return true;
225 if (PaintUtils::getAlphaDirect(op->mPaint)
226 != PaintUtils::getAlphaDirect(mOps[0].op->mPaint)) {
230 if (op->mPaint && mOps[0].op->mPaint &&
231 op->mPaint->getColorFilter() != mOps[0].op->mPaint->getColorFilter()) {
235 if (op->mPaint && mOps[0].op->mPaint &&
236 op->mPaint->getShader() != mOps[0].op->mPaint->getShader()) {
243 virtual void add(DrawOp* op, const DeferredDisplayState* state,
244 bool opaqueOverBounds) override {
245 DrawBatch::add(op, state, opaqueOverBounds);
247 const int newClipSideFlags = state->mClipSideFlags;
248 mClipSideFlags |= newClipSideFlags;
249 if (newClipSideFlags & kClipSide_Left) mClipRect.left = state->mClip.left;
250 if (newClipSideFlags & kClipSide_Top) mClipRect.top = state->mClip.top;
251 if (newClipSideFlags & kClipSide_Right) mClipRect.right = state->mClip.right;
252 if (newClipSideFlags & kClipSide_Bottom) mClipRect.bottom = state->mClip.bottom;
255 virtual void replay(OpenGLRenderer& renderer, Rect& dirty, int index) override {
256 DEFER_LOGD("%d replaying MergingDrawBatch %p, with %d ops,"
257 " clip flags %x (batch id %x, merge id %p)",
258 index, this, mOps.size(), mClipSideFlags, getBatchId(), getMergeId());
259 if (mOps.size() == 1) {
260 DrawBatch::replay(renderer, dirty, -1);
264 // clipping in the merged case is done ahead of time since all ops share the clip (if any)
265 renderer.setupMergedMultiDraw(mClipSideFlags ? &mClipRect : nullptr);
267 DrawOp* op = mOps[0].op;
268 #if DEBUG_DISPLAY_LIST_OPS_AS_EVENTS
269 renderer.eventMark("multiDraw");
270 renderer.eventMark(op->name());
272 op->multiDraw(renderer, dirty, mOps, mBounds);
274 #if DEBUG_MERGE_BEHAVIOR
275 renderer.drawScreenSpaceColorRect(mBounds.left, mBounds.top, mBounds.right, mBounds.bottom,
276 DEBUG_COLOR_MERGEDBATCH);
282 * Contains the effective clip rect shared by all merged ops. Initialized to the layer viewport,
283 * it will shrink if an op must be clipped on a certain side. The clipped sides are reflected in
290 class StateOpBatch : public Batch {
292 // creates a single operation batch
293 StateOpBatch(const StateOp* op, const DeferredDisplayState* state) : mOp(op), mState(state) {}
295 virtual void replay(OpenGLRenderer& renderer, Rect& dirty, int index) override {
296 DEFER_LOGD("replaying state op batch %p", this);
297 renderer.restoreDisplayState(*mState);
299 // use invalid save count because it won't be used at flush time - RestoreToCountOp is the
300 // only one to use it, and we don't use that class at flush time, instead calling
301 // renderer.restoreToCount directly
303 mOp->applyState(renderer, saveCount);
308 const DeferredDisplayState* mState;
311 class RestoreToCountBatch : public Batch {
313 RestoreToCountBatch(const StateOp* op, const DeferredDisplayState* state, int restoreCount) :
314 mState(state), mRestoreCount(restoreCount) {}
316 virtual void replay(OpenGLRenderer& renderer, Rect& dirty, int index) override {
317 DEFER_LOGD("batch %p restoring to count %d", this, mRestoreCount);
319 renderer.restoreDisplayState(*mState);
320 renderer.restoreToCount(mRestoreCount);
324 // we use the state storage for the RestoreToCountOp, but don't replay the op itself
325 const DeferredDisplayState* mState;
328 * The count used here represents the flush() time saveCount. This is as opposed to the
329 * DisplayList record time, or defer() time values (which are RestoreToCountOp's mCount, and
330 * (saveCount + mCount) respectively). Since the count is different from the original
331 * RestoreToCountOp, we don't store a pointer to the op, as elsewhere.
333 const int mRestoreCount;
336 #if DEBUG_MERGE_BEHAVIOR
337 class BarrierDebugBatch : public Batch {
338 virtual void replay(OpenGLRenderer& renderer, Rect& dirty, int index) {
339 renderer.drawScreenSpaceColorRect(0, 0, 10000, 10000, DEBUG_COLOR_BARRIER);
344 /////////////////////////////////////////////////////////////////////////////////
345 // DeferredDisplayList
346 /////////////////////////////////////////////////////////////////////////////////
348 void DeferredDisplayList::resetBatchingState() {
349 for (int i = 0; i < kOpBatch_Count; i++) {
350 mBatchLookup[i] = nullptr;
351 mMergingBatches[i].clear();
353 #if DEBUG_MERGE_BEHAVIOR
354 if (mBatches.size() != 0) {
355 mBatches.add(new BarrierDebugBatch());
358 mEarliestBatchIndex = mBatches.size();
361 void DeferredDisplayList::clear() {
362 resetBatchingState();
363 mComplexClipStackStart = -1;
365 for (unsigned int i = 0; i < mBatches.size(); i++) {
370 mEarliestBatchIndex = 0;
371 mEarliestUnclearedIndex = 0;
374 /////////////////////////////////////////////////////////////////////////////////
376 /////////////////////////////////////////////////////////////////////////////////
378 int DeferredDisplayList::getStateOpDeferFlags() const {
379 // For both clipOp and save(Layer)Op, we don't want to save drawing info, and only want to save
380 // the clip if we aren't recording a complex clip (and can thus trust it to be a rect)
381 return recordingComplexClip() ? 0 : kStateDeferFlag_Clip;
384 int DeferredDisplayList::getDrawOpDeferFlags() const {
385 return kStateDeferFlag_Draw | getStateOpDeferFlags();
389 * When an clipping operation occurs that could cause a complex clip, record the operation and all
390 * subsequent clipOps, save/restores (if the clip flag is set). During a flush, instead of loading
391 * the clip from deferred state, we play back all of the relevant state operations that generated
394 * Note that we don't need to record the associated restore operation, since operations at defer
395 * time record whether they should store the renderer's current clip
397 void DeferredDisplayList::addClip(OpenGLRenderer& renderer, ClipOp* op) {
398 if (recordingComplexClip() || op->canCauseComplexClip() || !renderer.hasRectToRectTransform()) {
399 DEFER_LOGD("%p Received complex clip operation %p", this, op);
401 // NOTE: defer clip op before setting mComplexClipStackStart so previous clip is recorded
402 storeStateOpBarrier(renderer, op);
404 if (!recordingComplexClip()) {
405 mComplexClipStackStart = renderer.getSaveCount() - 1;
406 DEFER_LOGD(" Starting complex clip region, start is %d", mComplexClipStackStart);
412 * For now, we record save layer operations as barriers in the batch list, preventing drawing
413 * operations from reordering around the saveLayer and it's associated restore()
415 * In the future, we should send saveLayer commands (if they can be played out of order) and their
416 * contained drawing operations to a seperate list of batches, so that they may draw at the
417 * beginning of the frame. This would avoid targetting and removing an FBO in the middle of a frame.
419 * saveLayer operations should be pulled to the beginning of the frame if the canvas doesn't have a
420 * complex clip, and if the flags (SaveFlags::Clip & SaveFlags::ClipToLayer) are set.
422 void DeferredDisplayList::addSaveLayer(OpenGLRenderer& renderer,
423 SaveLayerOp* op, int newSaveCount) {
424 DEFER_LOGD("%p adding saveLayerOp %p, flags %x, new count %d",
425 this, op, op->getFlags(), newSaveCount);
427 storeStateOpBarrier(renderer, op);
428 mSaveStack.push_back(newSaveCount);
432 * Takes save op and it's return value - the new save count - and stores it into the stream as a
433 * barrier if it's needed to properly modify a complex clip
435 void DeferredDisplayList::addSave(OpenGLRenderer& renderer, SaveOp* op, int newSaveCount) {
436 int saveFlags = op->getFlags();
437 DEFER_LOGD("%p adding saveOp %p, flags %x, new count %d", this, op, saveFlags, newSaveCount);
439 if (recordingComplexClip() && (saveFlags & SaveFlags::Clip)) {
440 // store and replay the save operation, as it may be needed to correctly playback the clip
441 DEFER_LOGD(" adding save barrier with new save count %d", newSaveCount);
442 storeStateOpBarrier(renderer, op);
443 mSaveStack.push_back(newSaveCount);
448 * saveLayer() commands must be associated with a restoreToCount batch that will clean up and draw
449 * the layer in the deferred list
451 * other save() commands which occur as children of a snapshot with complex clip will be deferred,
452 * and must be restored
454 * Either will act as a barrier to draw operation reordering, as we want to play back layer
455 * save/restore and complex canvas modifications (including save/restore) in order.
457 void DeferredDisplayList::addRestoreToCount(OpenGLRenderer& renderer, StateOp* op,
459 DEFER_LOGD("%p addRestoreToCount %d", this, newSaveCount);
461 if (recordingComplexClip() && newSaveCount <= mComplexClipStackStart) {
462 mComplexClipStackStart = -1;
463 resetBatchingState();
466 if (mSaveStack.empty() || newSaveCount > mSaveStack.back()) {
470 while (!mSaveStack.empty() && mSaveStack.back() >= newSaveCount) mSaveStack.pop_back();
472 storeRestoreToCountBarrier(renderer, op, mSaveStack.size() + FLUSH_SAVE_STACK_DEPTH);
475 void DeferredDisplayList::addDrawOp(OpenGLRenderer& renderer, DrawOp* op) {
476 /* 1: op calculates local bounds */
477 DeferredDisplayState* const state = createState();
478 if (op->getLocalBounds(state->mBounds)) {
479 if (state->mBounds.isEmpty()) {
480 // valid empty bounds, don't bother deferring
481 tryRecycleState(state);
485 state->mBounds.setEmpty();
488 /* 2: renderer calculates global bounds + stores state */
489 if (renderer.storeDisplayState(*state, getDrawOpDeferFlags())) {
490 tryRecycleState(state);
491 return; // quick rejected
494 /* 3: ask op for defer info, given renderer state */
496 op->onDefer(renderer, deferInfo, *state);
498 // complex clip has a complex set of expectations on the renderer state - for now, avoid taking
499 // the merge path in those cases
500 deferInfo.mergeable &= !recordingComplexClip();
501 deferInfo.opaqueOverBounds &= !recordingComplexClip()
502 && mSaveStack.empty()
503 && !state->mRoundRectClipState;
505 if (CC_LIKELY(avoidOverdraw()) && mBatches.size() &&
506 state->mClipSideFlags != kClipSide_ConservativeFull &&
507 deferInfo.opaqueOverBounds && state->mBounds.contains(mBounds)) {
508 // avoid overdraw by resetting drawing state + discarding drawing ops
509 discardDrawingBatches(mBatches.size() - 1);
510 resetBatchingState();
513 if (CC_UNLIKELY(Properties::drawReorderDisabled)) {
514 // TODO: elegant way to reuse batches?
515 DrawBatch* b = new DrawBatch(deferInfo);
516 b->add(op, state, deferInfo.opaqueOverBounds);
517 mBatches.push_back(b);
521 // find the latest batch of the new op's type, and try to merge the new op into it
522 DrawBatch* targetBatch = nullptr;
524 // insertion point of a new batch, will hopefully be immediately after similar batch
525 // (eventually, should be similar shader)
526 int insertBatchIndex = mBatches.size();
527 if (!mBatches.empty()) {
528 if (state->mBounds.isEmpty()) {
529 // don't know the bounds for op, so create new batch and start from scratch on next op
530 DrawBatch* b = new DrawBatch(deferInfo);
531 b->add(op, state, deferInfo.opaqueOverBounds);
532 mBatches.push_back(b);
533 resetBatchingState();
535 DEFER_LOGD("Warning: Encountered op with empty bounds, resetting batches");
541 if (deferInfo.mergeable) {
542 // Try to merge with any existing batch with same mergeId.
543 std::unordered_map<mergeid_t, DrawBatch*>& mergingBatch
544 = mMergingBatches[deferInfo.batchId];
545 auto getResult = mergingBatch.find(deferInfo.mergeId);
546 if (getResult != mergingBatch.end()) {
547 targetBatch = getResult->second;
548 if (!((MergingDrawBatch*) targetBatch)->canMergeWith(op, state)) {
549 targetBatch = nullptr;
553 // join with similar, non-merging batch
554 targetBatch = (DrawBatch*)mBatchLookup[deferInfo.batchId];
557 if (targetBatch || deferInfo.mergeable) {
558 // iterate back toward target to see if anything drawn since should overlap the new op
559 // if no target, merging ops still interate to find similar batch to insert after
560 for (int i = mBatches.size() - 1; i >= mEarliestBatchIndex; i--) {
561 DrawBatch* overBatch = (DrawBatch*)mBatches[i];
563 if (overBatch == targetBatch) break;
565 // TODO: also consider shader shared between batch types
566 if (deferInfo.batchId == overBatch->getBatchId()) {
567 insertBatchIndex = i + 1;
568 if (!targetBatch) break; // found insert position, quit
571 if (overBatch->intersects(state->mBounds)) {
572 // NOTE: it may be possible to optimize for special cases where two operations
573 // of the same batch/paint could swap order, such as with a non-mergeable
574 // (clipped) and a mergeable text operation
575 targetBatch = nullptr;
577 DEFER_LOGD("op couldn't join batch %p, was intersected by batch %d",
588 if (deferInfo.mergeable) {
589 targetBatch = new MergingDrawBatch(deferInfo,
590 renderer.getViewportWidth(), renderer.getViewportHeight());
591 mMergingBatches[deferInfo.batchId].insert(
592 std::make_pair(deferInfo.mergeId, targetBatch));
594 targetBatch = new DrawBatch(deferInfo);
595 mBatchLookup[deferInfo.batchId] = targetBatch;
598 DEFER_LOGD("creating %singBatch %p, bid %x, at %d",
599 deferInfo.mergeable ? "Merg" : "Draw",
600 targetBatch, deferInfo.batchId, insertBatchIndex);
601 mBatches.insert(mBatches.begin() + insertBatchIndex, targetBatch);
604 targetBatch->add(op, state, deferInfo.opaqueOverBounds);
607 void DeferredDisplayList::storeStateOpBarrier(OpenGLRenderer& renderer, StateOp* op) {
608 DEFER_LOGD("%p adding state op barrier at pos %d", this, mBatches.size());
610 DeferredDisplayState* state = createState();
611 renderer.storeDisplayState(*state, getStateOpDeferFlags());
612 mBatches.push_back(new StateOpBatch(op, state));
613 resetBatchingState();
616 void DeferredDisplayList::storeRestoreToCountBarrier(OpenGLRenderer& renderer, StateOp* op,
618 DEFER_LOGD("%p adding restore to count %d barrier, pos %d",
619 this, newSaveCount, mBatches.size());
621 // store displayState for the restore operation, as it may be associated with a saveLayer that
622 // doesn't have SaveFlags::Clip set
623 DeferredDisplayState* state = createState();
624 renderer.storeDisplayState(*state, getStateOpDeferFlags());
625 mBatches.push_back(new RestoreToCountBatch(op, state, newSaveCount));
626 resetBatchingState();
629 /////////////////////////////////////////////////////////////////////////////////
631 /////////////////////////////////////////////////////////////////////////////////
633 static void replayBatchList(const std::vector<Batch*>& batchList,
634 OpenGLRenderer& renderer, Rect& dirty) {
636 for (unsigned int i = 0; i < batchList.size(); i++) {
638 batchList[i]->replay(renderer, dirty, i);
641 DEFER_LOGD("--flushed, drew %d batches", batchList.size());
644 void DeferredDisplayList::flush(OpenGLRenderer& renderer, Rect& dirty) {
645 ATRACE_NAME("flush drawing commands");
646 Caches::getInstance().fontRenderer.endPrecaching();
648 if (isEmpty()) return; // nothing to flush
649 renderer.restoreToCount(1);
651 DEFER_LOGD("--flushing");
652 renderer.eventMark("Flush");
654 // save and restore so that reordering doesn't affect final state
655 renderer.save(SaveFlags::MatrixClip);
657 if (CC_LIKELY(avoidOverdraw())) {
658 for (unsigned int i = 1; i < mBatches.size(); i++) {
659 if (mBatches[i] && mBatches[i]->coversBounds(mBounds)) {
660 discardDrawingBatches(i - 1);
664 // NOTE: depth of the save stack at this point, before playback, should be reflected in
665 // FLUSH_SAVE_STACK_DEPTH, so that save/restores match up correctly
666 replayBatchList(mBatches, renderer, dirty);
668 renderer.restoreToCount(1);
670 DEFER_LOGD("--flush complete, returning %x", status);
674 void DeferredDisplayList::discardDrawingBatches(const unsigned int maxIndex) {
675 for (unsigned int i = mEarliestUnclearedIndex; i <= maxIndex; i++) {
676 // leave deferred state ops alone for simplicity (empty save restore pairs may now exist)
677 if (mBatches[i] && mBatches[i]->purelyDrawBatch()) {
679 mBatches[i] = nullptr;
682 mEarliestUnclearedIndex = maxIndex + 1;
685 }; // namespace uirenderer
686 }; // namespace android