RenderNode.cpp revision 49e6c73913e9bee58ea5e3984be151ee8e033163
1/* 2 * Copyright (C) 2014 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#define ATRACE_TAG ATRACE_TAG_VIEW 18 19#include "RenderNode.h" 20 21#include <SkCanvas.h> 22#include <algorithm> 23 24#include <utils/Trace.h> 25 26#include "Debug.h" 27#include "DisplayListOp.h" 28#include "DisplayListLogBuffer.h" 29 30namespace android { 31namespace uirenderer { 32 33void RenderNode::outputLogBuffer(int fd) { 34 DisplayListLogBuffer& logBuffer = DisplayListLogBuffer::getInstance(); 35 if (logBuffer.isEmpty()) { 36 return; 37 } 38 39 FILE *file = fdopen(fd, "a"); 40 41 fprintf(file, "\nRecent DisplayList operations\n"); 42 logBuffer.outputCommands(file); 43 44 String8 cachesLog; 45 Caches::getInstance().dumpMemoryUsage(cachesLog); 46 fprintf(file, "\nCaches:\n%s", cachesLog.string()); 47 fprintf(file, "\n"); 48 49 fflush(file); 50} 51 52RenderNode::RenderNode() : mDestroyed(false), mNeedsPropertiesSync(false), mDisplayListData(0) { 53} 54 55RenderNode::~RenderNode() { 56 LOG_ALWAYS_FATAL_IF(mDestroyed, "Double destroyed DisplayList %p", this); 57 58 mDestroyed = true; 59 delete mDisplayListData; 60} 61 62void RenderNode::destroyDisplayListDeferred(RenderNode* displayList) { 63 if (displayList) { 64 if (Caches::hasInstance()) { 65 DISPLAY_LIST_LOGD("Deferring display list destruction"); 66 Caches::getInstance().deleteDisplayListDeferred(displayList); 67 } else { 68 delete displayList; 69 } 70 } 71} 72 73void RenderNode::setData(DisplayListData* data) { 74 delete mDisplayListData; 75 mDisplayListData = data; 76 if (mDisplayListData) { 77 Caches::getInstance().registerFunctors(mDisplayListData->functorCount); 78 } 79} 80 81/** 82 * This function is a simplified version of replay(), where we simply retrieve and log the 83 * display list. This function should remain in sync with the replay() function. 84 */ 85void RenderNode::output(uint32_t level) { 86 ALOGD("%*sStart display list (%p, %s, render=%d)", (level - 1) * 2, "", this, 87 mName.string(), isRenderable()); 88 ALOGD("%*s%s %d", level * 2, "", "Save", 89 SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag); 90 91 properties().debugOutputProperties(level); 92 int flags = DisplayListOp::kOpLogFlag_Recurse; 93 for (unsigned int i = 0; i < mDisplayListData->displayListOps.size(); i++) { 94 mDisplayListData->displayListOps[i]->output(level, flags); 95 } 96 97 ALOGD("%*sDone (%p, %s)", (level - 1) * 2, "", this, mName.string()); 98} 99 100void RenderNode::updateProperties() { 101 if (mNeedsPropertiesSync) { 102 mNeedsPropertiesSync = false; 103 mProperties = mStagingProperties; 104 } 105 106 if (mDisplayListData) { 107 for (size_t i = 0; i < mDisplayListData->children.size(); i++) { 108 RenderNode* childNode = mDisplayListData->children[i]->mDisplayList; 109 childNode->updateProperties(); 110 } 111 } 112} 113 114bool RenderNode::hasFunctors() { 115 if (!mDisplayListData) return false; 116 117 if (mDisplayListData->functorCount) { 118 return true; 119 } 120 121 for (size_t i = 0; i < mDisplayListData->children.size(); i++) { 122 RenderNode* childNode = mDisplayListData->children[i]->mDisplayList; 123 if (childNode->hasFunctors()) { 124 return true; 125 } 126 } 127 128 return false; 129} 130 131/* 132 * For property operations, we pass a savecount of 0, since the operations aren't part of the 133 * displaylist, and thus don't have to compensate for the record-time/playback-time discrepancy in 134 * base saveCount (i.e., how RestoreToCount uses saveCount + properties().getCount()) 135 */ 136#define PROPERTY_SAVECOUNT 0 137 138template <class T> 139void RenderNode::setViewProperties(OpenGLRenderer& renderer, T& handler) { 140#if DEBUG_DISPLAY_LIST 141 properties().debugOutputProperties(handler.level() + 1); 142#endif 143 if (properties().getLeft() != 0 || properties().getTop() != 0) { 144 renderer.translate(properties().getLeft(), properties().getTop()); 145 } 146 if (properties().getStaticMatrix()) { 147 renderer.concatMatrix(properties().getStaticMatrix()); 148 } else if (properties().getAnimationMatrix()) { 149 renderer.concatMatrix(properties().getAnimationMatrix()); 150 } 151 if (properties().getMatrixFlags() != 0) { 152 if (properties().getMatrixFlags() == TRANSLATION) { 153 renderer.translate(properties().getTranslationX(), properties().getTranslationY()); 154 } else { 155 renderer.concatMatrix(*properties().getTransformMatrix()); 156 } 157 } 158 bool clipToBoundsNeeded = properties().getCaching() ? false : properties().getClipToBounds(); 159 if (properties().getAlpha() < 1) { 160 if (properties().getCaching()) { 161 renderer.setOverrideLayerAlpha(properties().getAlpha()); 162 } else if (!properties().getHasOverlappingRendering()) { 163 renderer.scaleAlpha(properties().getAlpha()); 164 } else { 165 // TODO: should be able to store the size of a DL at record time and not 166 // have to pass it into this call. In fact, this information might be in the 167 // location/size info that we store with the new native transform data. 168 int saveFlags = SkCanvas::kHasAlphaLayer_SaveFlag; 169 if (clipToBoundsNeeded) { 170 saveFlags |= SkCanvas::kClipToLayer_SaveFlag; 171 clipToBoundsNeeded = false; // clipping done by saveLayer 172 } 173 174 SaveLayerOp* op = new (handler.allocator()) SaveLayerOp( 175 0, 0, properties().getWidth(), properties().getHeight(), 176 properties().getAlpha() * 255, saveFlags); 177 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 178 } 179 } 180 if (clipToBoundsNeeded) { 181 ClipRectOp* op = new (handler.allocator()) ClipRectOp( 182 0, 0, properties().getWidth(), properties().getHeight(), SkRegion::kIntersect_Op); 183 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 184 } 185 186 if (CC_UNLIKELY(properties().hasClippingPath())) { 187 // TODO: optimize for round rect/circle clipping 188 const SkPath* path = properties().getClippingPath(); 189 ClipPathOp* op = new (handler.allocator()) ClipPathOp(path, SkRegion::kIntersect_Op); 190 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 191 } 192} 193 194/** 195 * Apply property-based transformations to input matrix 196 * 197 * If true3dTransform is set to true, the transform applied to the input matrix will use true 4x4 198 * matrix computation instead of the Skia 3x3 matrix + camera hackery. 199 */ 200void RenderNode::applyViewPropertyTransforms(mat4& matrix, bool true3dTransform) { 201 if (properties().getLeft() != 0 || properties().getTop() != 0) { 202 matrix.translate(properties().getLeft(), properties().getTop()); 203 } 204 if (properties().getStaticMatrix()) { 205 mat4 stat(*properties().getStaticMatrix()); 206 matrix.multiply(stat); 207 } else if (properties().getAnimationMatrix()) { 208 mat4 anim(*properties().getAnimationMatrix()); 209 matrix.multiply(anim); 210 } 211 if (properties().getMatrixFlags() != 0) { 212 if (properties().getMatrixFlags() == TRANSLATION) { 213 matrix.translate(properties().getTranslationX(), properties().getTranslationY(), 214 true3dTransform ? properties().getTranslationZ() : 0.0f); 215 } else { 216 if (!true3dTransform) { 217 matrix.multiply(*properties().getTransformMatrix()); 218 } else { 219 mat4 true3dMat; 220 true3dMat.loadTranslate( 221 properties().getPivotX() + properties().getTranslationX(), 222 properties().getPivotY() + properties().getTranslationY(), 223 properties().getTranslationZ()); 224 true3dMat.rotate(properties().getRotationX(), 1, 0, 0); 225 true3dMat.rotate(properties().getRotationY(), 0, 1, 0); 226 true3dMat.rotate(properties().getRotation(), 0, 0, 1); 227 true3dMat.scale(properties().getScaleX(), properties().getScaleY(), 1); 228 true3dMat.translate(-properties().getPivotX(), -properties().getPivotY()); 229 230 matrix.multiply(true3dMat); 231 } 232 } 233 } 234} 235 236/** 237 * Organizes the DisplayList hierarchy to prepare for background projection reordering. 238 * 239 * This should be called before a call to defer() or drawDisplayList() 240 * 241 * Each DisplayList that serves as a 3d root builds its list of composited children, 242 * which are flagged to not draw in the standard draw loop. 243 */ 244void RenderNode::computeOrdering() { 245 ATRACE_CALL(); 246 mProjectedNodes.clear(); 247 248 // TODO: create temporary DDLOp and call computeOrderingImpl on top DisplayList so that 249 // transform properties are applied correctly to top level children 250 if (mDisplayListData == NULL) return; 251 for (unsigned int i = 0; i < mDisplayListData->children.size(); i++) { 252 DrawDisplayListOp* childOp = mDisplayListData->children[i]; 253 childOp->mDisplayList->computeOrderingImpl(childOp, 254 &mProjectedNodes, &mat4::identity()); 255 } 256} 257 258void RenderNode::computeOrderingImpl( 259 DrawDisplayListOp* opState, 260 Vector<DrawDisplayListOp*>* compositedChildrenOfProjectionSurface, 261 const mat4* transformFromProjectionSurface) { 262 mProjectedNodes.clear(); 263 if (mDisplayListData == NULL || mDisplayListData->isEmpty()) return; 264 265 // TODO: should avoid this calculation in most cases 266 // TODO: just calculate single matrix, down to all leaf composited elements 267 Matrix4 localTransformFromProjectionSurface(*transformFromProjectionSurface); 268 localTransformFromProjectionSurface.multiply(opState->mTransformFromParent); 269 270 if (properties().getProjectBackwards()) { 271 // composited projectee, flag for out of order draw, save matrix, and store in proj surface 272 opState->mSkipInOrderDraw = true; 273 opState->mTransformFromCompositingAncestor.load(localTransformFromProjectionSurface); 274 compositedChildrenOfProjectionSurface->add(opState); 275 } else { 276 // standard in order draw 277 opState->mSkipInOrderDraw = false; 278 } 279 280 if (mDisplayListData->children.size() > 0) { 281 const bool isProjectionReceiver = mDisplayListData->projectionReceiveIndex >= 0; 282 bool haveAppliedPropertiesToProjection = false; 283 for (unsigned int i = 0; i < mDisplayListData->children.size(); i++) { 284 DrawDisplayListOp* childOp = mDisplayListData->children[i]; 285 RenderNode* child = childOp->mDisplayList; 286 287 Vector<DrawDisplayListOp*>* projectionChildren = NULL; 288 const mat4* projectionTransform = NULL; 289 if (isProjectionReceiver && !child->properties().getProjectBackwards()) { 290 // if receiving projections, collect projecting descendent 291 292 // Note that if a direct descendent is projecting backwards, we pass it's 293 // grandparent projection collection, since it shouldn't project onto it's 294 // parent, where it will already be drawing. 295 projectionChildren = &mProjectedNodes; 296 projectionTransform = &mat4::identity(); 297 } else { 298 if (!haveAppliedPropertiesToProjection) { 299 applyViewPropertyTransforms(localTransformFromProjectionSurface); 300 haveAppliedPropertiesToProjection = true; 301 } 302 projectionChildren = compositedChildrenOfProjectionSurface; 303 projectionTransform = &localTransformFromProjectionSurface; 304 } 305 child->computeOrderingImpl(childOp, projectionChildren, projectionTransform); 306 } 307 } 308} 309 310class DeferOperationHandler { 311public: 312 DeferOperationHandler(DeferStateStruct& deferStruct, int level) 313 : mDeferStruct(deferStruct), mLevel(level) {} 314 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 315 operation->defer(mDeferStruct, saveCount, mLevel, clipToBounds); 316 } 317 inline LinearAllocator& allocator() { return *(mDeferStruct.mAllocator); } 318 inline void startMark(const char* name) {} // do nothing 319 inline void endMark() {} 320 inline int level() { return mLevel; } 321 inline int replayFlags() { return mDeferStruct.mReplayFlags; } 322 323private: 324 DeferStateStruct& mDeferStruct; 325 const int mLevel; 326}; 327 328void RenderNode::deferNodeTree(DeferStateStruct& deferStruct) { 329 DeferOperationHandler handler(deferStruct, 0); 330 if (properties().getTranslationZ() > 0.0f) issueDrawShadowOperation(Matrix4::identity(), handler); 331 issueOperations<DeferOperationHandler>(deferStruct.mRenderer, handler); 332} 333 334void RenderNode::deferNodeInParent(DeferStateStruct& deferStruct, const int level) { 335 DeferOperationHandler handler(deferStruct, level); 336 issueOperations<DeferOperationHandler>(deferStruct.mRenderer, handler); 337} 338 339class ReplayOperationHandler { 340public: 341 ReplayOperationHandler(ReplayStateStruct& replayStruct, int level) 342 : mReplayStruct(replayStruct), mLevel(level) {} 343 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 344#if DEBUG_DISPLAY_LIST_OPS_AS_EVENTS 345 properties().getReplayStruct().mRenderer.eventMark(operation->name()); 346#endif 347 operation->replay(mReplayStruct, saveCount, mLevel, clipToBounds); 348 } 349 inline LinearAllocator& allocator() { return *(mReplayStruct.mAllocator); } 350 inline void startMark(const char* name) { 351 mReplayStruct.mRenderer.startMark(name); 352 } 353 inline void endMark() { 354 mReplayStruct.mRenderer.endMark(); 355 DISPLAY_LIST_LOGD("%*sDone (%p, %s), returning %d", level * 2, "", this, mName.string(), 356 mReplayStruct.mDrawGlStatus); 357 } 358 inline int level() { return mLevel; } 359 inline int replayFlags() { return mReplayStruct.mReplayFlags; } 360 361private: 362 ReplayStateStruct& mReplayStruct; 363 const int mLevel; 364}; 365 366void RenderNode::replayNodeTree(ReplayStateStruct& replayStruct) { 367 ReplayOperationHandler handler(replayStruct, 0); 368 if (properties().getTranslationZ() > 0.0f) issueDrawShadowOperation(Matrix4::identity(), handler); 369 issueOperations<ReplayOperationHandler>(replayStruct.mRenderer, handler); 370} 371 372void RenderNode::replayNodeInParent(ReplayStateStruct& replayStruct, const int level) { 373 ReplayOperationHandler handler(replayStruct, level); 374 issueOperations<ReplayOperationHandler>(replayStruct.mRenderer, handler); 375} 376 377void RenderNode::buildZSortedChildList(Vector<ZDrawDisplayListOpPair>& zTranslatedNodes) { 378 if (mDisplayListData == NULL || mDisplayListData->children.size() == 0) return; 379 380 for (unsigned int i = 0; i < mDisplayListData->children.size(); i++) { 381 DrawDisplayListOp* childOp = mDisplayListData->children[i]; 382 RenderNode* child = childOp->mDisplayList; 383 float childZ = child->properties().getTranslationZ(); 384 385 if (childZ != 0.0f) { 386 zTranslatedNodes.add(ZDrawDisplayListOpPair(childZ, childOp)); 387 childOp->mSkipInOrderDraw = true; 388 } else if (!child->properties().getProjectBackwards()) { 389 // regular, in order drawing DisplayList 390 childOp->mSkipInOrderDraw = false; 391 } 392 } 393 394 // Z sort 3d children (stable-ness makes z compare fall back to standard drawing order) 395 std::stable_sort(zTranslatedNodes.begin(), zTranslatedNodes.end()); 396} 397 398template <class T> 399void RenderNode::issueDrawShadowOperation(const Matrix4& transformFromParent, T& handler) { 400 if (properties().getAlpha() <= 0.0f) return; 401 402 mat4 shadowMatrixXY(transformFromParent); 403 applyViewPropertyTransforms(shadowMatrixXY); 404 405 // Z matrix needs actual 3d transformation, so mapped z values will be correct 406 mat4 shadowMatrixZ(transformFromParent); 407 applyViewPropertyTransforms(shadowMatrixZ, true); 408 409 const SkPath* outlinePath = properties().getOutline().getPath(); 410 const RevealClip& revealClip = properties().getRevealClip(); 411 const SkPath* revealClipPath = revealClip.hasConvexClip() 412 ? revealClip.getPath() : NULL; // only pass the reveal clip's path if it's convex 413 414 /** 415 * The drawing area of the caster is always the same as the its perimeter (which 416 * the shadow system uses) *except* in the inverse clip case. Inform the shadow 417 * system that the caster's drawing area (as opposed to its perimeter) has been 418 * clipped, so that it knows the caster can't be opaque. 419 */ 420 bool casterUnclipped = !revealClip.willClip() || revealClip.hasConvexClip(); 421 422 DisplayListOp* shadowOp = new (handler.allocator()) DrawShadowOp( 423 shadowMatrixXY, shadowMatrixZ, 424 properties().getAlpha(), casterUnclipped, 425 properties().getWidth(), properties().getHeight(), 426 outlinePath, revealClipPath); 427 handler(shadowOp, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 428} 429 430#define SHADOW_DELTA 0.1f 431 432template <class T> 433void RenderNode::issueOperationsOf3dChildren(const Vector<ZDrawDisplayListOpPair>& zTranslatedNodes, 434 ChildrenSelectMode mode, OpenGLRenderer& renderer, T& handler) { 435 const int size = zTranslatedNodes.size(); 436 if (size == 0 437 || (mode == kNegativeZChildren && zTranslatedNodes[0].key > 0.0f) 438 || (mode == kPositiveZChildren && zTranslatedNodes[size - 1].key < 0.0f)) { 439 // no 3d children to draw 440 return; 441 } 442 443 /** 444 * Draw shadows and (potential) casters mostly in order, but allow the shadows of casters 445 * with very similar Z heights to draw together. 446 * 447 * This way, if Views A & B have the same Z height and are both casting shadows, the shadows are 448 * underneath both, and neither's shadow is drawn on top of the other. 449 */ 450 const size_t nonNegativeIndex = findNonNegativeIndex(zTranslatedNodes); 451 size_t drawIndex, shadowIndex, endIndex; 452 if (mode == kNegativeZChildren) { 453 drawIndex = 0; 454 endIndex = nonNegativeIndex; 455 shadowIndex = endIndex; // draw no shadows 456 } else { 457 drawIndex = nonNegativeIndex; 458 endIndex = size; 459 shadowIndex = drawIndex; // potentially draw shadow for each pos Z child 460 } 461 float lastCasterZ = 0.0f; 462 while (shadowIndex < endIndex || drawIndex < endIndex) { 463 if (shadowIndex < endIndex) { 464 DrawDisplayListOp* casterOp = zTranslatedNodes[shadowIndex].value; 465 RenderNode* caster = casterOp->mDisplayList; 466 const float casterZ = zTranslatedNodes[shadowIndex].key; 467 // attempt to render the shadow if the caster about to be drawn is its caster, 468 // OR if its caster's Z value is similar to the previous potential caster 469 if (shadowIndex == drawIndex || casterZ - lastCasterZ < SHADOW_DELTA) { 470 caster->issueDrawShadowOperation(casterOp->mTransformFromParent, handler); 471 472 lastCasterZ = casterZ; // must do this even if current caster not casting a shadow 473 shadowIndex++; 474 continue; 475 } 476 } 477 478 // only the actual child DL draw needs to be in save/restore, 479 // since it modifies the renderer's matrix 480 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 481 482 DrawDisplayListOp* childOp = zTranslatedNodes[drawIndex].value; 483 RenderNode* child = childOp->mDisplayList; 484 485 renderer.concatMatrix(childOp->mTransformFromParent); 486 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 487 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 488 childOp->mSkipInOrderDraw = true; 489 490 renderer.restoreToCount(restoreTo); 491 drawIndex++; 492 } 493} 494 495template <class T> 496void RenderNode::issueOperationsOfProjectedChildren(OpenGLRenderer& renderer, T& handler) { 497 for (size_t i = 0; i < mProjectedNodes.size(); i++) { 498 DrawDisplayListOp* childOp = mProjectedNodes[i]; 499 500 // matrix save, concat, and restore can be done safely without allocating operations 501 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 502 renderer.concatMatrix(childOp->mTransformFromCompositingAncestor); 503 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 504 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 505 childOp->mSkipInOrderDraw = true; 506 renderer.restoreToCount(restoreTo); 507 } 508} 509 510/** 511 * This function serves both defer and replay modes, and will organize the displayList's component 512 * operations for a single frame: 513 * 514 * Every 'simple' state operation that affects just the matrix and alpha (or other factors of 515 * DeferredDisplayState) may be issued directly to the renderer, but complex operations (with custom 516 * defer logic) and operations in displayListOps are issued through the 'handler' which handles the 517 * defer vs replay logic, per operation 518 */ 519template <class T> 520void RenderNode::issueOperations(OpenGLRenderer& renderer, T& handler) { 521 const int level = handler.level(); 522 if (CC_UNLIKELY(mDestroyed)) { // temporary debug logging 523 ALOGW("Error: %s is drawing after destruction", mName.string()); 524 CRASH(); 525 } 526 if (mDisplayListData->isEmpty() || properties().getAlpha() <= 0) { 527 DISPLAY_LIST_LOGD("%*sEmpty display list (%p, %s)", level * 2, "", this, mName.string()); 528 return; 529 } 530 531 handler.startMark(mName.string()); 532 533#if DEBUG_DISPLAY_LIST 534 Rect* clipRect = renderer.getClipRect(); 535 DISPLAY_LIST_LOGD("%*sStart display list (%p, %s), clipRect: %.0f, %.0f, %.0f, %.0f", 536 level * 2, "", this, mName.string(), clipRect->left, clipRect->top, 537 clipRect->right, clipRect->bottom); 538#endif 539 540 LinearAllocator& alloc = handler.allocator(); 541 int restoreTo = renderer.getSaveCount(); 542 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 543 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 544 545 DISPLAY_LIST_LOGD("%*sSave %d %d", (level + 1) * 2, "", 546 SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag, restoreTo); 547 548 setViewProperties<T>(renderer, handler); 549 550 bool quickRejected = properties().getClipToBounds() 551 && renderer.quickRejectConservative(0, 0, properties().getWidth(), properties().getHeight()); 552 if (!quickRejected) { 553 Vector<ZDrawDisplayListOpPair> zTranslatedNodes; 554 buildZSortedChildList(zTranslatedNodes); 555 556 // for 3d root, draw children with negative z values 557 issueOperationsOf3dChildren(zTranslatedNodes, kNegativeZChildren, renderer, handler); 558 559 DisplayListLogBuffer& logBuffer = DisplayListLogBuffer::getInstance(); 560 const int saveCountOffset = renderer.getSaveCount() - 1; 561 const int projectionReceiveIndex = mDisplayListData->projectionReceiveIndex; 562 for (unsigned int i = 0; i < mDisplayListData->displayListOps.size(); i++) { 563 DisplayListOp *op = mDisplayListData->displayListOps[i]; 564 565#if DEBUG_DISPLAY_LIST 566 op->output(level + 1); 567#endif 568 logBuffer.writeCommand(level, op->name()); 569 handler(op, saveCountOffset, properties().getClipToBounds()); 570 571 if (CC_UNLIKELY(i == projectionReceiveIndex && mProjectedNodes.size() > 0)) { 572 issueOperationsOfProjectedChildren(renderer, handler); 573 } 574 } 575 576 // for 3d root, draw children with positive z values 577 issueOperationsOf3dChildren(zTranslatedNodes, kPositiveZChildren, renderer, handler); 578 } 579 580 DISPLAY_LIST_LOGD("%*sRestoreToCount %d", (level + 1) * 2, "", restoreTo); 581 handler(new (alloc) RestoreToCountOp(restoreTo), 582 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 583 renderer.setOverrideLayerAlpha(1.0f); 584 585 handler.endMark(); 586} 587 588} /* namespace uirenderer */ 589} /* namespace android */ 590