RenderNode.cpp revision fca52b7583d1e5f5ff8ed06554875d2a30ef56fa
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#define LOG_TAG "OpenGLRenderer" 19 20#include "RenderNode.h" 21 22#include <algorithm> 23#include <string> 24 25#include <SkCanvas.h> 26#include <algorithm> 27 28 29#include "DamageAccumulator.h" 30#include "Debug.h" 31#include "DisplayListOp.h" 32#include "LayerRenderer.h" 33#include "OpenGLRenderer.h" 34#include "TreeInfo.h" 35#include "utils/MathUtils.h" 36#include "utils/TraceUtils.h" 37#include "renderthread/CanvasContext.h" 38 39namespace android { 40namespace uirenderer { 41 42void RenderNode::debugDumpLayers(const char* prefix) { 43 if (mLayer) { 44 ALOGD("%sNode %p (%s) has layer %p (fbo = %u, wasBuildLayered = %s)", 45 prefix, this, getName(), mLayer, mLayer->getFbo(), 46 mLayer->wasBuildLayered ? "true" : "false"); 47 } 48 if (mDisplayListData) { 49 for (size_t i = 0; i < mDisplayListData->children().size(); i++) { 50 mDisplayListData->children()[i]->mRenderNode->debugDumpLayers(prefix); 51 } 52 } 53} 54 55RenderNode::RenderNode() 56 : mDirtyPropertyFields(0) 57 , mNeedsDisplayListDataSync(false) 58 , mDisplayListData(nullptr) 59 , mStagingDisplayListData(nullptr) 60 , mAnimatorManager(*this) 61 , mLayer(nullptr) 62 , mParentCount(0) { 63} 64 65RenderNode::~RenderNode() { 66 deleteDisplayListData(); 67 delete mStagingDisplayListData; 68 if (mLayer) { 69 ALOGW("Memory Warning: Layer %p missed its detachment, held on to for far too long!", mLayer); 70 mLayer->postDecStrong(); 71 mLayer = nullptr; 72 } 73} 74 75void RenderNode::setStagingDisplayList(DisplayListData* data) { 76 mNeedsDisplayListDataSync = true; 77 delete mStagingDisplayListData; 78 mStagingDisplayListData = data; 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%s%s%s)", (level - 1) * 2, "", this, 87 getName(), 88 (properties().hasShadow() ? ", casting shadow" : ""), 89 (isRenderable() ? "" : ", empty"), 90 (mLayer != nullptr ? ", on HW Layer" : "")); 91 ALOGD("%*s%s %d", level * 2, "", "Save", 92 SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag); 93 94 properties().debugOutputProperties(level); 95 int flags = DisplayListOp::kOpLogFlag_Recurse; 96 if (mDisplayListData) { 97 // TODO: consider printing the chunk boundaries here 98 for (unsigned int i = 0; i < mDisplayListData->displayListOps.size(); i++) { 99 mDisplayListData->displayListOps[i]->output(level, flags); 100 } 101 } 102 103 ALOGD("%*sDone (%p, %s)", (level - 1) * 2, "", this, getName()); 104} 105 106int RenderNode::getDebugSize() { 107 int size = sizeof(RenderNode); 108 if (mStagingDisplayListData) { 109 size += mStagingDisplayListData->getUsedSize(); 110 } 111 if (mDisplayListData && mDisplayListData != mStagingDisplayListData) { 112 size += mDisplayListData->getUsedSize(); 113 } 114 return size; 115} 116 117void RenderNode::prepareTree(TreeInfo& info) { 118 ATRACE_CALL(); 119 LOG_ALWAYS_FATAL_IF(!info.damageAccumulator, "DamageAccumulator missing"); 120 121 prepareTreeImpl(info); 122} 123 124void RenderNode::addAnimator(const sp<BaseRenderNodeAnimator>& animator) { 125 mAnimatorManager.addAnimator(animator); 126} 127 128void RenderNode::damageSelf(TreeInfo& info) { 129 if (isRenderable()) { 130 if (properties().getClipDamageToBounds()) { 131 info.damageAccumulator->dirty(0, 0, properties().getWidth(), properties().getHeight()); 132 } else { 133 // Hope this is big enough? 134 // TODO: Get this from the display list ops or something 135 info.damageAccumulator->dirty(INT_MIN, INT_MIN, INT_MAX, INT_MAX); 136 } 137 } 138} 139 140void RenderNode::prepareLayer(TreeInfo& info, uint32_t dirtyMask) { 141 LayerType layerType = properties().effectiveLayerType(); 142 if (CC_UNLIKELY(layerType == LayerType::RenderLayer)) { 143 // Damage applied so far needs to affect our parent, but does not require 144 // the layer to be updated. So we pop/push here to clear out the current 145 // damage and get a clean state for display list or children updates to 146 // affect, which will require the layer to be updated 147 info.damageAccumulator->popTransform(); 148 info.damageAccumulator->pushTransform(this); 149 if (dirtyMask & DISPLAY_LIST) { 150 damageSelf(info); 151 } 152 } 153} 154 155void RenderNode::pushLayerUpdate(TreeInfo& info) { 156 LayerType layerType = properties().effectiveLayerType(); 157 // If we are not a layer OR we cannot be rendered (eg, view was detached) 158 // we need to destroy any Layers we may have had previously 159 if (CC_LIKELY(layerType != LayerType::RenderLayer) || CC_UNLIKELY(!isRenderable())) { 160 if (CC_UNLIKELY(mLayer)) { 161 LayerRenderer::destroyLayer(mLayer); 162 mLayer = nullptr; 163 } 164 return; 165 } 166 167 bool transformUpdateNeeded = false; 168 if (!mLayer) { 169 mLayer = LayerRenderer::createRenderLayer(info.renderState, getWidth(), getHeight()); 170 applyLayerPropertiesToLayer(info); 171 damageSelf(info); 172 transformUpdateNeeded = true; 173 } else if (mLayer->layer.getWidth() != getWidth() || mLayer->layer.getHeight() != getHeight()) { 174 if (!LayerRenderer::resizeLayer(mLayer, getWidth(), getHeight())) { 175 LayerRenderer::destroyLayer(mLayer); 176 mLayer = nullptr; 177 } 178 damageSelf(info); 179 transformUpdateNeeded = true; 180 } 181 182 SkRect dirty; 183 info.damageAccumulator->peekAtDirty(&dirty); 184 185 if (!mLayer) { 186 Caches::getInstance().dumpMemoryUsage(); 187 if (info.errorHandler) { 188 std::string msg = "Unable to create layer for "; 189 msg += getName(); 190 info.errorHandler->onError(msg); 191 } 192 return; 193 } 194 195 if (transformUpdateNeeded) { 196 // update the transform in window of the layer to reset its origin wrt light source position 197 Matrix4 windowTransform; 198 info.damageAccumulator->computeCurrentTransform(&windowTransform); 199 mLayer->setWindowTransform(windowTransform); 200 } 201 202 if (dirty.intersect(0, 0, getWidth(), getHeight())) { 203 dirty.roundOut(&dirty); 204 mLayer->updateDeferred(this, dirty.fLeft, dirty.fTop, dirty.fRight, dirty.fBottom); 205 } 206 // This is not inside the above if because we may have called 207 // updateDeferred on a previous prepare pass that didn't have a renderer 208 if (info.renderer && mLayer->deferredUpdateScheduled) { 209 info.renderer->pushLayerUpdate(mLayer); 210 } 211 212 if (CC_UNLIKELY(info.canvasContext)) { 213 // If canvasContext is not null that means there are prefetched layers 214 // that need to be accounted for. That might be us, so tell CanvasContext 215 // that this layer is in the tree and should not be destroyed. 216 info.canvasContext->markLayerInUse(this); 217 } 218} 219 220void RenderNode::prepareTreeImpl(TreeInfo& info) { 221 info.damageAccumulator->pushTransform(this); 222 223 if (info.mode == TreeInfo::MODE_FULL) { 224 pushStagingPropertiesChanges(info); 225 } 226 uint32_t animatorDirtyMask = 0; 227 if (CC_LIKELY(info.runAnimations)) { 228 animatorDirtyMask = mAnimatorManager.animate(info); 229 } 230 prepareLayer(info, animatorDirtyMask); 231 if (info.mode == TreeInfo::MODE_FULL) { 232 pushStagingDisplayListChanges(info); 233 } 234 prepareSubTree(info, mDisplayListData); 235 pushLayerUpdate(info); 236 237 info.damageAccumulator->popTransform(); 238} 239 240void RenderNode::pushStagingPropertiesChanges(TreeInfo& info) { 241 // Push the animators first so that setupStartValueIfNecessary() is called 242 // before properties() is trampled by stagingProperties(), as they are 243 // required by some animators. 244 if (CC_LIKELY(info.runAnimations)) { 245 mAnimatorManager.pushStaging(); 246 } 247 if (mDirtyPropertyFields) { 248 mDirtyPropertyFields = 0; 249 damageSelf(info); 250 info.damageAccumulator->popTransform(); 251 mProperties = mStagingProperties; 252 applyLayerPropertiesToLayer(info); 253 // We could try to be clever and only re-damage if the matrix changed. 254 // However, we don't need to worry about that. The cost of over-damaging 255 // here is only going to be a single additional map rect of this node 256 // plus a rect join(). The parent's transform (and up) will only be 257 // performed once. 258 info.damageAccumulator->pushTransform(this); 259 damageSelf(info); 260 } 261} 262 263void RenderNode::applyLayerPropertiesToLayer(TreeInfo& info) { 264 if (CC_LIKELY(!mLayer)) return; 265 266 const LayerProperties& props = properties().layerProperties(); 267 mLayer->setAlpha(props.alpha(), props.xferMode()); 268 mLayer->setColorFilter(props.colorFilter()); 269 mLayer->setBlend(props.needsBlending()); 270} 271 272void RenderNode::pushStagingDisplayListChanges(TreeInfo& info) { 273 if (mNeedsDisplayListDataSync) { 274 mNeedsDisplayListDataSync = false; 275 // Make sure we inc first so that we don't fluctuate between 0 and 1, 276 // which would thrash the layer cache 277 if (mStagingDisplayListData) { 278 for (size_t i = 0; i < mStagingDisplayListData->children().size(); i++) { 279 mStagingDisplayListData->children()[i]->mRenderNode->incParentRefCount(); 280 } 281 } 282 // Damage with the old display list first then the new one to catch any 283 // changes in isRenderable or, in the future, bounds 284 damageSelf(info); 285 deleteDisplayListData(); 286 // TODO: Remove this caches stuff 287 if (mStagingDisplayListData && mStagingDisplayListData->functors.size()) { 288 Caches::getInstance().registerFunctors(mStagingDisplayListData->functors.size()); 289 } 290 mDisplayListData = mStagingDisplayListData; 291 mStagingDisplayListData = nullptr; 292 if (mDisplayListData) { 293 for (size_t i = 0; i < mDisplayListData->functors.size(); i++) { 294 (*mDisplayListData->functors[i])(DrawGlInfo::kModeSync, nullptr); 295 } 296 } 297 damageSelf(info); 298 } 299} 300 301void RenderNode::deleteDisplayListData() { 302 if (mDisplayListData) { 303 for (size_t i = 0; i < mDisplayListData->children().size(); i++) { 304 mDisplayListData->children()[i]->mRenderNode->decParentRefCount(); 305 } 306 if (mDisplayListData->functors.size()) { 307 Caches::getInstance().unregisterFunctors(mDisplayListData->functors.size()); 308 } 309 } 310 delete mDisplayListData; 311 mDisplayListData = nullptr; 312} 313 314void RenderNode::prepareSubTree(TreeInfo& info, DisplayListData* subtree) { 315 if (subtree) { 316 TextureCache& cache = Caches::getInstance().textureCache; 317 info.out.hasFunctors |= subtree->functors.size(); 318 for (size_t i = 0; info.prepareTextures && i < subtree->bitmapResources.size(); i++) { 319 info.prepareTextures = cache.prefetchAndMarkInUse(subtree->bitmapResources[i]); 320 } 321 for (size_t i = 0; i < subtree->children().size(); i++) { 322 DrawRenderNodeOp* op = subtree->children()[i]; 323 RenderNode* childNode = op->mRenderNode; 324 info.damageAccumulator->pushTransform(&op->mTransformFromParent); 325 childNode->prepareTreeImpl(info); 326 info.damageAccumulator->popTransform(); 327 } 328 } 329} 330 331void RenderNode::destroyHardwareResources() { 332 if (mLayer) { 333 LayerRenderer::destroyLayer(mLayer); 334 mLayer = nullptr; 335 } 336 if (mDisplayListData) { 337 for (size_t i = 0; i < mDisplayListData->children().size(); i++) { 338 mDisplayListData->children()[i]->mRenderNode->destroyHardwareResources(); 339 } 340 if (mNeedsDisplayListDataSync) { 341 // Next prepare tree we are going to push a new display list, so we can 342 // drop our current one now 343 deleteDisplayListData(); 344 } 345 } 346} 347 348void RenderNode::decParentRefCount() { 349 LOG_ALWAYS_FATAL_IF(!mParentCount, "already 0!"); 350 mParentCount--; 351 if (!mParentCount) { 352 // If a child of ours is being attached to our parent then this will incorrectly 353 // destroy its hardware resources. However, this situation is highly unlikely 354 // and the failure is "just" that the layer is re-created, so this should 355 // be safe enough 356 destroyHardwareResources(); 357 } 358} 359 360/* 361 * For property operations, we pass a savecount of 0, since the operations aren't part of the 362 * displaylist, and thus don't have to compensate for the record-time/playback-time discrepancy in 363 * base saveCount (i.e., how RestoreToCount uses saveCount + properties().getCount()) 364 */ 365#define PROPERTY_SAVECOUNT 0 366 367template <class T> 368void RenderNode::setViewProperties(OpenGLRenderer& renderer, T& handler) { 369#if DEBUG_DISPLAY_LIST 370 properties().debugOutputProperties(handler.level() + 1); 371#endif 372 if (properties().getLeft() != 0 || properties().getTop() != 0) { 373 renderer.translate(properties().getLeft(), properties().getTop()); 374 } 375 if (properties().getStaticMatrix()) { 376 renderer.concatMatrix(*properties().getStaticMatrix()); 377 } else if (properties().getAnimationMatrix()) { 378 renderer.concatMatrix(*properties().getAnimationMatrix()); 379 } 380 if (properties().hasTransformMatrix()) { 381 if (properties().isTransformTranslateOnly()) { 382 renderer.translate(properties().getTranslationX(), properties().getTranslationY()); 383 } else { 384 renderer.concatMatrix(*properties().getTransformMatrix()); 385 } 386 } 387 const bool isLayer = properties().effectiveLayerType() != LayerType::None; 388 int clipFlags = properties().getClippingFlags(); 389 if (properties().getAlpha() < 1) { 390 if (isLayer) { 391 clipFlags &= ~CLIP_TO_BOUNDS; // bounds clipping done by layer 392 } 393 LOG_ALWAYS_FATAL_IF(!isLayer && properties().getHasOverlappingRendering()); 394 renderer.scaleAlpha(properties().getAlpha()); 395 396 if (CC_UNLIKELY(ATRACE_ENABLED() && properties().promotedToLayer())) { 397 // pretend to cause savelayer to warn about performance problem affecting old versions 398 ATRACE_FORMAT("%s alpha caused saveLayer %dx%d", getName(), 399 static_cast<int>(getWidth()), 400 static_cast<int>(getHeight())); 401 } 402 } 403 if (clipFlags) { 404 Rect clipRect; 405 properties().getClippingRectForFlags(clipFlags, &clipRect); 406 ClipRectOp* op = new (handler.allocator()) ClipRectOp( 407 clipRect.left, clipRect.top, clipRect.right, clipRect.bottom, 408 SkRegion::kIntersect_Op); 409 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 410 } 411 412 // TODO: support nesting round rect clips 413 if (mProperties.getRevealClip().willClip()) { 414 Rect bounds; 415 mProperties.getRevealClip().getBounds(&bounds); 416 renderer.setClippingRoundRect(handler.allocator(), bounds, mProperties.getRevealClip().getRadius()); 417 } else if (mProperties.getOutline().willClip()) { 418 renderer.setClippingOutline(handler.allocator(), &(mProperties.getOutline())); 419 } 420} 421 422/** 423 * Apply property-based transformations to input matrix 424 * 425 * If true3dTransform is set to true, the transform applied to the input matrix will use true 4x4 426 * matrix computation instead of the Skia 3x3 matrix + camera hackery. 427 */ 428void RenderNode::applyViewPropertyTransforms(mat4& matrix, bool true3dTransform) const { 429 if (properties().getLeft() != 0 || properties().getTop() != 0) { 430 matrix.translate(properties().getLeft(), properties().getTop()); 431 } 432 if (properties().getStaticMatrix()) { 433 mat4 stat(*properties().getStaticMatrix()); 434 matrix.multiply(stat); 435 } else if (properties().getAnimationMatrix()) { 436 mat4 anim(*properties().getAnimationMatrix()); 437 matrix.multiply(anim); 438 } 439 440 bool applyTranslationZ = true3dTransform && !MathUtils::isZero(properties().getZ()); 441 if (properties().hasTransformMatrix() || applyTranslationZ) { 442 if (properties().isTransformTranslateOnly()) { 443 matrix.translate(properties().getTranslationX(), properties().getTranslationY(), 444 true3dTransform ? properties().getZ() : 0.0f); 445 } else { 446 if (!true3dTransform) { 447 matrix.multiply(*properties().getTransformMatrix()); 448 } else { 449 mat4 true3dMat; 450 true3dMat.loadTranslate( 451 properties().getPivotX() + properties().getTranslationX(), 452 properties().getPivotY() + properties().getTranslationY(), 453 properties().getZ()); 454 true3dMat.rotate(properties().getRotationX(), 1, 0, 0); 455 true3dMat.rotate(properties().getRotationY(), 0, 1, 0); 456 true3dMat.rotate(properties().getRotation(), 0, 0, 1); 457 true3dMat.scale(properties().getScaleX(), properties().getScaleY(), 1); 458 true3dMat.translate(-properties().getPivotX(), -properties().getPivotY()); 459 460 matrix.multiply(true3dMat); 461 } 462 } 463 } 464} 465 466/** 467 * Organizes the DisplayList hierarchy to prepare for background projection reordering. 468 * 469 * This should be called before a call to defer() or drawDisplayList() 470 * 471 * Each DisplayList that serves as a 3d root builds its list of composited children, 472 * which are flagged to not draw in the standard draw loop. 473 */ 474void RenderNode::computeOrdering() { 475 ATRACE_CALL(); 476 mProjectedNodes.clear(); 477 478 // TODO: create temporary DDLOp and call computeOrderingImpl on top DisplayList so that 479 // transform properties are applied correctly to top level children 480 if (mDisplayListData == nullptr) return; 481 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 482 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 483 childOp->mRenderNode->computeOrderingImpl(childOp, 484 properties().getOutline().getPath(), &mProjectedNodes, &mat4::identity()); 485 } 486} 487 488void RenderNode::computeOrderingImpl( 489 DrawRenderNodeOp* opState, 490 const SkPath* outlineOfProjectionSurface, 491 Vector<DrawRenderNodeOp*>* compositedChildrenOfProjectionSurface, 492 const mat4* transformFromProjectionSurface) { 493 mProjectedNodes.clear(); 494 if (mDisplayListData == nullptr || mDisplayListData->isEmpty()) return; 495 496 // TODO: should avoid this calculation in most cases 497 // TODO: just calculate single matrix, down to all leaf composited elements 498 Matrix4 localTransformFromProjectionSurface(*transformFromProjectionSurface); 499 localTransformFromProjectionSurface.multiply(opState->mTransformFromParent); 500 501 if (properties().getProjectBackwards()) { 502 // composited projectee, flag for out of order draw, save matrix, and store in proj surface 503 opState->mSkipInOrderDraw = true; 504 opState->mTransformFromCompositingAncestor.load(localTransformFromProjectionSurface); 505 compositedChildrenOfProjectionSurface->add(opState); 506 } else { 507 // standard in order draw 508 opState->mSkipInOrderDraw = false; 509 } 510 511 if (mDisplayListData->children().size() > 0) { 512 const bool isProjectionReceiver = mDisplayListData->projectionReceiveIndex >= 0; 513 bool haveAppliedPropertiesToProjection = false; 514 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 515 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 516 RenderNode* child = childOp->mRenderNode; 517 518 const SkPath* projectionOutline = nullptr; 519 Vector<DrawRenderNodeOp*>* projectionChildren = nullptr; 520 const mat4* projectionTransform = nullptr; 521 if (isProjectionReceiver && !child->properties().getProjectBackwards()) { 522 // if receiving projections, collect projecting descendent 523 524 // Note that if a direct descendent is projecting backwards, we pass it's 525 // grandparent projection collection, since it shouldn't project onto it's 526 // parent, where it will already be drawing. 527 projectionOutline = properties().getOutline().getPath(); 528 projectionChildren = &mProjectedNodes; 529 projectionTransform = &mat4::identity(); 530 } else { 531 if (!haveAppliedPropertiesToProjection) { 532 applyViewPropertyTransforms(localTransformFromProjectionSurface); 533 haveAppliedPropertiesToProjection = true; 534 } 535 projectionOutline = outlineOfProjectionSurface; 536 projectionChildren = compositedChildrenOfProjectionSurface; 537 projectionTransform = &localTransformFromProjectionSurface; 538 } 539 child->computeOrderingImpl(childOp, 540 projectionOutline, projectionChildren, projectionTransform); 541 } 542 } 543} 544 545class DeferOperationHandler { 546public: 547 DeferOperationHandler(DeferStateStruct& deferStruct, int level) 548 : mDeferStruct(deferStruct), mLevel(level) {} 549 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 550 operation->defer(mDeferStruct, saveCount, mLevel, clipToBounds); 551 } 552 inline LinearAllocator& allocator() { return *(mDeferStruct.mAllocator); } 553 inline void startMark(const char* name) {} // do nothing 554 inline void endMark() {} 555 inline int level() { return mLevel; } 556 inline int replayFlags() { return mDeferStruct.mReplayFlags; } 557 inline SkPath* allocPathForFrame() { return mDeferStruct.allocPathForFrame(); } 558 559private: 560 DeferStateStruct& mDeferStruct; 561 const int mLevel; 562}; 563 564void RenderNode::defer(DeferStateStruct& deferStruct, const int level) { 565 DeferOperationHandler handler(deferStruct, level); 566 issueOperations<DeferOperationHandler>(deferStruct.mRenderer, handler); 567} 568 569class ReplayOperationHandler { 570public: 571 ReplayOperationHandler(ReplayStateStruct& replayStruct, int level) 572 : mReplayStruct(replayStruct), mLevel(level) {} 573 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 574#if DEBUG_DISPLAY_LIST_OPS_AS_EVENTS 575 mReplayStruct.mRenderer.eventMark(operation->name()); 576#endif 577 operation->replay(mReplayStruct, saveCount, mLevel, clipToBounds); 578 } 579 inline LinearAllocator& allocator() { return *(mReplayStruct.mAllocator); } 580 inline void startMark(const char* name) { 581 mReplayStruct.mRenderer.startMark(name); 582 } 583 inline void endMark() { 584 mReplayStruct.mRenderer.endMark(); 585 } 586 inline int level() { return mLevel; } 587 inline int replayFlags() { return mReplayStruct.mReplayFlags; } 588 inline SkPath* allocPathForFrame() { return mReplayStruct.allocPathForFrame(); } 589 590private: 591 ReplayStateStruct& mReplayStruct; 592 const int mLevel; 593}; 594 595void RenderNode::replay(ReplayStateStruct& replayStruct, const int level) { 596 ReplayOperationHandler handler(replayStruct, level); 597 issueOperations<ReplayOperationHandler>(replayStruct.mRenderer, handler); 598} 599 600void RenderNode::buildZSortedChildList(const DisplayListData::Chunk& chunk, 601 Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes) { 602 if (chunk.beginChildIndex == chunk.endChildIndex) return; 603 604 for (unsigned int i = chunk.beginChildIndex; i < chunk.endChildIndex; i++) { 605 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 606 RenderNode* child = childOp->mRenderNode; 607 float childZ = child->properties().getZ(); 608 609 if (!MathUtils::isZero(childZ) && chunk.reorderChildren) { 610 zTranslatedNodes.add(ZDrawRenderNodeOpPair(childZ, childOp)); 611 childOp->mSkipInOrderDraw = true; 612 } else if (!child->properties().getProjectBackwards()) { 613 // regular, in order drawing DisplayList 614 childOp->mSkipInOrderDraw = false; 615 } 616 } 617 618 // Z sort any 3d children (stable-ness makes z compare fall back to standard drawing order) 619 std::stable_sort(zTranslatedNodes.begin(), zTranslatedNodes.end()); 620} 621 622template <class T> 623void RenderNode::issueDrawShadowOperation(const Matrix4& transformFromParent, T& handler) { 624 if (properties().getAlpha() <= 0.0f 625 || properties().getOutline().getAlpha() <= 0.0f 626 || !properties().getOutline().getPath()) { 627 // no shadow to draw 628 return; 629 } 630 631 mat4 shadowMatrixXY(transformFromParent); 632 applyViewPropertyTransforms(shadowMatrixXY); 633 634 // Z matrix needs actual 3d transformation, so mapped z values will be correct 635 mat4 shadowMatrixZ(transformFromParent); 636 applyViewPropertyTransforms(shadowMatrixZ, true); 637 638 const SkPath* casterOutlinePath = properties().getOutline().getPath(); 639 const SkPath* revealClipPath = properties().getRevealClip().getPath(); 640 if (revealClipPath && revealClipPath->isEmpty()) return; 641 642 float casterAlpha = properties().getAlpha() * properties().getOutline().getAlpha(); 643 644 645 // holds temporary SkPath to store the result of intersections 646 SkPath* frameAllocatedPath = nullptr; 647 const SkPath* outlinePath = casterOutlinePath; 648 649 // intersect the outline with the reveal clip, if present 650 if (revealClipPath) { 651 frameAllocatedPath = handler.allocPathForFrame(); 652 653 Op(*outlinePath, *revealClipPath, kIntersect_PathOp, frameAllocatedPath); 654 outlinePath = frameAllocatedPath; 655 } 656 657 // intersect the outline with the clipBounds, if present 658 if (properties().getClippingFlags() & CLIP_TO_CLIP_BOUNDS) { 659 if (!frameAllocatedPath) { 660 frameAllocatedPath = handler.allocPathForFrame(); 661 } 662 663 Rect clipBounds; 664 properties().getClippingRectForFlags(CLIP_TO_CLIP_BOUNDS, &clipBounds); 665 SkPath clipBoundsPath; 666 clipBoundsPath.addRect(clipBounds.left, clipBounds.top, 667 clipBounds.right, clipBounds.bottom); 668 669 Op(*outlinePath, clipBoundsPath, kIntersect_PathOp, frameAllocatedPath); 670 outlinePath = frameAllocatedPath; 671 } 672 673 DisplayListOp* shadowOp = new (handler.allocator()) DrawShadowOp( 674 shadowMatrixXY, shadowMatrixZ, casterAlpha, outlinePath); 675 handler(shadowOp, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 676} 677 678#define SHADOW_DELTA 0.1f 679 680template <class T> 681void RenderNode::issueOperationsOf3dChildren(ChildrenSelectMode mode, 682 const Matrix4& initialTransform, const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 683 OpenGLRenderer& renderer, T& handler) { 684 const int size = zTranslatedNodes.size(); 685 if (size == 0 686 || (mode == kNegativeZChildren && zTranslatedNodes[0].key > 0.0f) 687 || (mode == kPositiveZChildren && zTranslatedNodes[size - 1].key < 0.0f)) { 688 // no 3d children to draw 689 return; 690 } 691 692 // Apply the base transform of the parent of the 3d children. This isolates 693 // 3d children of the current chunk from transformations made in previous chunks. 694 int rootRestoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 695 renderer.setMatrix(initialTransform); 696 697 /** 698 * Draw shadows and (potential) casters mostly in order, but allow the shadows of casters 699 * with very similar Z heights to draw together. 700 * 701 * This way, if Views A & B have the same Z height and are both casting shadows, the shadows are 702 * underneath both, and neither's shadow is drawn on top of the other. 703 */ 704 const size_t nonNegativeIndex = findNonNegativeIndex(zTranslatedNodes); 705 size_t drawIndex, shadowIndex, endIndex; 706 if (mode == kNegativeZChildren) { 707 drawIndex = 0; 708 endIndex = nonNegativeIndex; 709 shadowIndex = endIndex; // draw no shadows 710 } else { 711 drawIndex = nonNegativeIndex; 712 endIndex = size; 713 shadowIndex = drawIndex; // potentially draw shadow for each pos Z child 714 } 715 716 DISPLAY_LIST_LOGD("%*s%d %s 3d children:", (handler.level() + 1) * 2, "", 717 endIndex - drawIndex, mode == kNegativeZChildren ? "negative" : "positive"); 718 719 float lastCasterZ = 0.0f; 720 while (shadowIndex < endIndex || drawIndex < endIndex) { 721 if (shadowIndex < endIndex) { 722 DrawRenderNodeOp* casterOp = zTranslatedNodes[shadowIndex].value; 723 RenderNode* caster = casterOp->mRenderNode; 724 const float casterZ = zTranslatedNodes[shadowIndex].key; 725 // attempt to render the shadow if the caster about to be drawn is its caster, 726 // OR if its caster's Z value is similar to the previous potential caster 727 if (shadowIndex == drawIndex || casterZ - lastCasterZ < SHADOW_DELTA) { 728 caster->issueDrawShadowOperation(casterOp->mTransformFromParent, handler); 729 730 lastCasterZ = casterZ; // must do this even if current caster not casting a shadow 731 shadowIndex++; 732 continue; 733 } 734 } 735 736 // only the actual child DL draw needs to be in save/restore, 737 // since it modifies the renderer's matrix 738 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 739 740 DrawRenderNodeOp* childOp = zTranslatedNodes[drawIndex].value; 741 742 renderer.concatMatrix(childOp->mTransformFromParent); 743 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 744 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 745 childOp->mSkipInOrderDraw = true; 746 747 renderer.restoreToCount(restoreTo); 748 drawIndex++; 749 } 750 renderer.restoreToCount(rootRestoreTo); 751} 752 753template <class T> 754void RenderNode::issueOperationsOfProjectedChildren(OpenGLRenderer& renderer, T& handler) { 755 DISPLAY_LIST_LOGD("%*s%d projected children:", (handler.level() + 1) * 2, "", mProjectedNodes.size()); 756 const SkPath* projectionReceiverOutline = properties().getOutline().getPath(); 757 int restoreTo = renderer.getSaveCount(); 758 759 LinearAllocator& alloc = handler.allocator(); 760 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 761 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 762 763 // Transform renderer to match background we're projecting onto 764 // (by offsetting canvas by translationX/Y of background rendernode, since only those are set) 765 const DisplayListOp* op = 766 (mDisplayListData->displayListOps[mDisplayListData->projectionReceiveIndex]); 767 const DrawRenderNodeOp* backgroundOp = reinterpret_cast<const DrawRenderNodeOp*>(op); 768 const RenderProperties& backgroundProps = backgroundOp->mRenderNode->properties(); 769 renderer.translate(backgroundProps.getTranslationX(), backgroundProps.getTranslationY()); 770 771 // If the projection reciever has an outline, we mask projected content to it 772 // (which we know, apriori, are all tessellated paths) 773 renderer.setProjectionPathMask(alloc, projectionReceiverOutline); 774 775 // draw projected nodes 776 for (size_t i = 0; i < mProjectedNodes.size(); i++) { 777 DrawRenderNodeOp* childOp = mProjectedNodes[i]; 778 779 // matrix save, concat, and restore can be done safely without allocating operations 780 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 781 renderer.concatMatrix(childOp->mTransformFromCompositingAncestor); 782 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 783 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 784 childOp->mSkipInOrderDraw = true; 785 renderer.restoreToCount(restoreTo); 786 } 787 788 handler(new (alloc) RestoreToCountOp(restoreTo), 789 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 790} 791 792/** 793 * This function serves both defer and replay modes, and will organize the displayList's component 794 * operations for a single frame: 795 * 796 * Every 'simple' state operation that affects just the matrix and alpha (or other factors of 797 * DeferredDisplayState) may be issued directly to the renderer, but complex operations (with custom 798 * defer logic) and operations in displayListOps are issued through the 'handler' which handles the 799 * defer vs replay logic, per operation 800 */ 801template <class T> 802void RenderNode::issueOperations(OpenGLRenderer& renderer, T& handler) { 803 if (mDisplayListData->isEmpty()) { 804 DISPLAY_LIST_LOGD("%*sEmpty display list (%p, %s)", level * 2, "", this, getName()); 805 return; 806 } 807 808 const bool drawLayer = (mLayer && (&renderer != mLayer->renderer.get())); 809 // If we are updating the contents of mLayer, we don't want to apply any of 810 // the RenderNode's properties to this issueOperations pass. Those will all 811 // be applied when the layer is drawn, aka when this is true. 812 const bool useViewProperties = (!mLayer || drawLayer); 813 if (useViewProperties) { 814 const Outline& outline = properties().getOutline(); 815 if (properties().getAlpha() <= 0 || (outline.getShouldClip() && outline.isEmpty())) { 816 DISPLAY_LIST_LOGD("%*sRejected display list (%p, %s)", level * 2, "", this, getName()); 817 return; 818 } 819 } 820 821 handler.startMark(getName()); 822 823#if DEBUG_DISPLAY_LIST 824 const Rect& clipRect = renderer.getLocalClipBounds(); 825 DISPLAY_LIST_LOGD("%*sStart display list (%p, %s), localClipBounds: %.0f, %.0f, %.0f, %.0f", 826 handler.level() * 2, "", this, getName(), 827 clipRect.left, clipRect.top, clipRect.right, clipRect.bottom); 828#endif 829 830 LinearAllocator& alloc = handler.allocator(); 831 int restoreTo = renderer.getSaveCount(); 832 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 833 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 834 835 DISPLAY_LIST_LOGD("%*sSave %d %d", (level + 1) * 2, "", 836 SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag, restoreTo); 837 838 if (useViewProperties) { 839 setViewProperties<T>(renderer, handler); 840 } 841 842 bool quickRejected = properties().getClipToBounds() 843 && renderer.quickRejectConservative(0, 0, properties().getWidth(), properties().getHeight()); 844 if (!quickRejected) { 845 Matrix4 initialTransform(*(renderer.currentTransform())); 846 847 if (drawLayer) { 848 handler(new (alloc) DrawLayerOp(mLayer, 0, 0), 849 renderer.getSaveCount() - 1, properties().getClipToBounds()); 850 } else { 851 const int saveCountOffset = renderer.getSaveCount() - 1; 852 const int projectionReceiveIndex = mDisplayListData->projectionReceiveIndex; 853 for (size_t chunkIndex = 0; chunkIndex < mDisplayListData->getChunks().size(); chunkIndex++) { 854 const DisplayListData::Chunk& chunk = mDisplayListData->getChunks()[chunkIndex]; 855 856 Vector<ZDrawRenderNodeOpPair> zTranslatedNodes; 857 buildZSortedChildList(chunk, zTranslatedNodes); 858 859 issueOperationsOf3dChildren(kNegativeZChildren, 860 initialTransform, zTranslatedNodes, renderer, handler); 861 862 863 for (size_t opIndex = chunk.beginOpIndex; opIndex < chunk.endOpIndex; opIndex++) { 864 DisplayListOp *op = mDisplayListData->displayListOps[opIndex]; 865#if DEBUG_DISPLAY_LIST 866 op->output(handler.level() + 1); 867#endif 868 handler(op, saveCountOffset, properties().getClipToBounds()); 869 870 if (CC_UNLIKELY(!mProjectedNodes.isEmpty() && projectionReceiveIndex >= 0 && 871 opIndex == static_cast<size_t>(projectionReceiveIndex))) { 872 issueOperationsOfProjectedChildren(renderer, handler); 873 } 874 } 875 876 issueOperationsOf3dChildren(kPositiveZChildren, 877 initialTransform, zTranslatedNodes, renderer, handler); 878 } 879 } 880 } 881 882 DISPLAY_LIST_LOGD("%*sRestoreToCount %d", (level + 1) * 2, "", restoreTo); 883 handler(new (alloc) RestoreToCountOp(restoreTo), 884 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 885 886 DISPLAY_LIST_LOGD("%*sDone (%p, %s)", level * 2, "", this, getName()); 887 handler.endMark(); 888} 889 890} /* namespace uirenderer */ 891} /* namespace android */ 892