RenderNode.cpp revision 09d5cddf67b676018700bcc10a72242641cd7eec
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#include <utils/Trace.h> 29 30#include "DamageAccumulator.h" 31#include "Debug.h" 32#include "DisplayListOp.h" 33#include "DisplayListLogBuffer.h" 34#include "LayerRenderer.h" 35#include "OpenGLRenderer.h" 36#include "utils/MathUtils.h" 37 38namespace android { 39namespace uirenderer { 40 41void RenderNode::outputLogBuffer(int fd) { 42 DisplayListLogBuffer& logBuffer = DisplayListLogBuffer::getInstance(); 43 if (logBuffer.isEmpty()) { 44 return; 45 } 46 47 FILE *file = fdopen(fd, "a"); 48 49 fprintf(file, "\nRecent DisplayList operations\n"); 50 logBuffer.outputCommands(file); 51 52 String8 cachesLog; 53 Caches::getInstance().dumpMemoryUsage(cachesLog); 54 fprintf(file, "\nCaches:\n%s", cachesLog.string()); 55 fprintf(file, "\n"); 56 57 fflush(file); 58} 59 60RenderNode::RenderNode() 61 : mDirtyPropertyFields(0) 62 , mNeedsDisplayListDataSync(false) 63 , mDisplayListData(0) 64 , mStagingDisplayListData(0) 65 , mAnimatorManager(*this) 66 , mLayer(0) 67 , mParentCount(0) { 68} 69 70RenderNode::~RenderNode() { 71 deleteDisplayListData(); 72 delete mStagingDisplayListData; 73 LayerRenderer::destroyLayerDeferred(mLayer); 74} 75 76void RenderNode::setStagingDisplayList(DisplayListData* data) { 77 mNeedsDisplayListDataSync = true; 78 delete mStagingDisplayListData; 79 mStagingDisplayListData = data; 80 if (mStagingDisplayListData) { 81 Caches::getInstance().registerFunctors(mStagingDisplayListData->functors.size()); 82 } 83} 84 85/** 86 * This function is a simplified version of replay(), where we simply retrieve and log the 87 * display list. This function should remain in sync with the replay() function. 88 */ 89void RenderNode::output(uint32_t level) { 90 ALOGD("%*sStart display list (%p, %s, render=%d)", (level - 1) * 2, "", this, 91 getName(), isRenderable()); 92 ALOGD("%*s%s %d", level * 2, "", "Save", 93 SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag); 94 95 properties().debugOutputProperties(level); 96 int flags = DisplayListOp::kOpLogFlag_Recurse; 97 for (unsigned int i = 0; i < mDisplayListData->displayListOps.size(); i++) { 98 mDisplayListData->displayListOps[i]->output(level, flags); 99 } 100 101 ALOGD("%*sDone (%p, %s)", (level - 1) * 2, "", this, getName()); 102} 103 104int RenderNode::getDebugSize() { 105 int size = sizeof(RenderNode); 106 if (mStagingDisplayListData) { 107 size += mStagingDisplayListData->allocator.usedSize(); 108 } 109 if (mDisplayListData && mDisplayListData != mStagingDisplayListData) { 110 size += mDisplayListData->allocator.usedSize(); 111 } 112 return size; 113} 114 115void RenderNode::prepareTree(TreeInfo& info) { 116 ATRACE_CALL(); 117 118 prepareTreeImpl(info); 119} 120 121void RenderNode::addAnimator(const sp<BaseRenderNodeAnimator>& animator) { 122 mAnimatorManager.addAnimator(animator); 123} 124 125void RenderNode::damageSelf(TreeInfo& info) { 126 if (isRenderable()) { 127 if (properties().getClipDamageToBounds()) { 128 info.damageAccumulator->dirty(0, 0, properties().getWidth(), properties().getHeight()); 129 } else { 130 // Hope this is big enough? 131 // TODO: Get this from the display list ops or something 132 info.damageAccumulator->dirty(INT_MIN, INT_MIN, INT_MAX, INT_MAX); 133 } 134 } 135} 136 137void RenderNode::prepareLayer(TreeInfo& info) { 138 LayerType layerType = properties().layerProperties().type(); 139 if (CC_UNLIKELY(layerType == kLayerTypeRenderLayer)) { 140 // We push a null transform here as we don't care what the existing dirty 141 // area is, only what our display list dirty is as well as our children's 142 // dirty area 143 info.damageAccumulator->pushNullTransform(); 144 } 145} 146 147void RenderNode::pushLayerUpdate(TreeInfo& info) { 148 LayerType layerType = properties().layerProperties().type(); 149 // If we are not a layer OR we cannot be rendered (eg, view was detached) 150 // we need to destroy any Layers we may have had previously 151 if (CC_LIKELY(layerType != kLayerTypeRenderLayer) || CC_UNLIKELY(!isRenderable())) { 152 if (layerType == kLayerTypeRenderLayer) { 153 info.damageAccumulator->popTransform(); 154 } 155 if (CC_UNLIKELY(mLayer)) { 156 LayerRenderer::destroyLayer(mLayer); 157 mLayer = NULL; 158 } 159 return; 160 } 161 162 if (!mLayer) { 163 mLayer = LayerRenderer::createRenderLayer(info.renderState, getWidth(), getHeight()); 164 applyLayerPropertiesToLayer(info); 165 damageSelf(info); 166 } else if (mLayer->layer.getWidth() != getWidth() || mLayer->layer.getHeight() != getHeight()) { 167 if (!LayerRenderer::resizeLayer(mLayer, getWidth(), getHeight())) { 168 LayerRenderer::destroyLayer(mLayer); 169 mLayer = 0; 170 } 171 damageSelf(info); 172 } 173 174 SkRect dirty; 175 info.damageAccumulator->peekAtDirty(&dirty); 176 info.damageAccumulator->popTransform(); 177 178 if (!mLayer) { 179 if (info.errorHandler) { 180 std::string msg = "Unable to create layer for "; 181 msg += getName(); 182 info.errorHandler->onError(msg); 183 } 184 return; 185 } 186 187 if (!dirty.isEmpty()) { 188 mLayer->updateDeferred(this, dirty.fLeft, dirty.fTop, dirty.fRight, dirty.fBottom); 189 } 190 // This is not inside the above if because we may have called 191 // updateDeferred on a previous prepare pass that didn't have a renderer 192 if (info.renderer && mLayer->deferredUpdateScheduled) { 193 info.renderer->pushLayerUpdate(mLayer); 194 } 195} 196 197void RenderNode::prepareTreeImpl(TreeInfo& info) { 198 info.damageAccumulator->pushTransform(this); 199 200 if (info.mode == TreeInfo::MODE_FULL) { 201 pushStagingPropertiesChanges(info); 202 } 203 mAnimatorManager.animate(info); 204 prepareLayer(info); 205 if (info.mode == TreeInfo::MODE_FULL) { 206 pushStagingDisplayListChanges(info); 207 } 208 prepareSubTree(info, mDisplayListData); 209 pushLayerUpdate(info); 210 211 info.damageAccumulator->popTransform(); 212} 213 214void RenderNode::pushStagingPropertiesChanges(TreeInfo& info) { 215 // Push the animators first so that setupStartValueIfNecessary() is called 216 // before properties() is trampled by stagingProperties(), as they are 217 // required by some animators. 218 mAnimatorManager.pushStaging(info); 219 if (mDirtyPropertyFields) { 220 mDirtyPropertyFields = 0; 221 damageSelf(info); 222 info.damageAccumulator->popTransform(); 223 mProperties = mStagingProperties; 224 applyLayerPropertiesToLayer(info); 225 // We could try to be clever and only re-damage if the matrix changed. 226 // However, we don't need to worry about that. The cost of over-damaging 227 // here is only going to be a single additional map rect of this node 228 // plus a rect join(). The parent's transform (and up) will only be 229 // performed once. 230 info.damageAccumulator->pushTransform(this); 231 damageSelf(info); 232 } 233} 234 235void RenderNode::applyLayerPropertiesToLayer(TreeInfo& info) { 236 if (CC_LIKELY(!mLayer)) return; 237 238 const LayerProperties& props = properties().layerProperties(); 239 mLayer->setAlpha(props.alpha(), props.xferMode()); 240 mLayer->setColorFilter(props.colorFilter()); 241 mLayer->setBlend(props.needsBlending()); 242} 243 244void RenderNode::pushStagingDisplayListChanges(TreeInfo& info) { 245 if (mNeedsDisplayListDataSync) { 246 mNeedsDisplayListDataSync = false; 247 // Make sure we inc first so that we don't fluctuate between 0 and 1, 248 // which would thrash the layer cache 249 if (mStagingDisplayListData) { 250 for (size_t i = 0; i < mStagingDisplayListData->children().size(); i++) { 251 mStagingDisplayListData->children()[i]->mRenderNode->incParentRefCount(); 252 } 253 } 254 deleteDisplayListData(); 255 mDisplayListData = mStagingDisplayListData; 256 mStagingDisplayListData = NULL; 257 if (mDisplayListData) { 258 for (size_t i = 0; i < mDisplayListData->functors.size(); i++) { 259 (*mDisplayListData->functors[i])(DrawGlInfo::kModeSync, NULL); 260 } 261 } 262 damageSelf(info); 263 } 264} 265 266void RenderNode::deleteDisplayListData() { 267 if (mDisplayListData) { 268 for (size_t i = 0; i < mDisplayListData->children().size(); i++) { 269 mDisplayListData->children()[i]->mRenderNode->decParentRefCount(); 270 } 271 } 272 delete mDisplayListData; 273 mDisplayListData = NULL; 274} 275 276void RenderNode::prepareSubTree(TreeInfo& info, DisplayListData* subtree) { 277 if (subtree) { 278 TextureCache& cache = Caches::getInstance().textureCache; 279 info.out.hasFunctors |= subtree->functors.size(); 280 // TODO: Fix ownedBitmapResources to not require disabling prepareTextures 281 // and thus falling out of async drawing path. 282 if (subtree->ownedBitmapResources.size()) { 283 info.prepareTextures = false; 284 } 285 for (size_t i = 0; info.prepareTextures && i < subtree->bitmapResources.size(); i++) { 286 info.prepareTextures = cache.prefetchAndMarkInUse(subtree->bitmapResources[i]); 287 } 288 for (size_t i = 0; i < subtree->children().size(); i++) { 289 DrawRenderNodeOp* op = subtree->children()[i]; 290 RenderNode* childNode = op->mRenderNode; 291 info.damageAccumulator->pushTransform(&op->mTransformFromParent); 292 childNode->prepareTreeImpl(info); 293 info.damageAccumulator->popTransform(); 294 } 295 } 296} 297 298void RenderNode::destroyHardwareResources() { 299 if (mLayer) { 300 LayerRenderer::destroyLayer(mLayer); 301 mLayer = NULL; 302 } 303 if (mDisplayListData) { 304 for (size_t i = 0; i < mDisplayListData->children().size(); i++) { 305 mDisplayListData->children()[i]->mRenderNode->destroyHardwareResources(); 306 } 307 if (mNeedsDisplayListDataSync) { 308 // Next prepare tree we are going to push a new display list, so we can 309 // drop our current one now 310 deleteDisplayListData(); 311 } 312 } 313} 314 315void RenderNode::decParentRefCount() { 316 LOG_ALWAYS_FATAL_IF(!mParentCount, "already 0!"); 317 mParentCount--; 318 if (!mParentCount) { 319 // If a child of ours is being attached to our parent then this will incorrectly 320 // destroy its hardware resources. However, this situation is highly unlikely 321 // and the failure is "just" that the layer is re-created, so this should 322 // be safe enough 323 destroyHardwareResources(); 324 } 325} 326 327/* 328 * For property operations, we pass a savecount of 0, since the operations aren't part of the 329 * displaylist, and thus don't have to compensate for the record-time/playback-time discrepancy in 330 * base saveCount (i.e., how RestoreToCount uses saveCount + properties().getCount()) 331 */ 332#define PROPERTY_SAVECOUNT 0 333 334template <class T> 335void RenderNode::setViewProperties(OpenGLRenderer& renderer, T& handler) { 336#if DEBUG_DISPLAY_LIST 337 properties().debugOutputProperties(handler.level() + 1); 338#endif 339 if (properties().getLeft() != 0 || properties().getTop() != 0) { 340 renderer.translate(properties().getLeft(), properties().getTop()); 341 } 342 if (properties().getStaticMatrix()) { 343 renderer.concatMatrix(*properties().getStaticMatrix()); 344 } else if (properties().getAnimationMatrix()) { 345 renderer.concatMatrix(*properties().getAnimationMatrix()); 346 } 347 if (properties().hasTransformMatrix()) { 348 if (properties().isTransformTranslateOnly()) { 349 renderer.translate(properties().getTranslationX(), properties().getTranslationY()); 350 } else { 351 renderer.concatMatrix(*properties().getTransformMatrix()); 352 } 353 } 354 const bool isLayer = properties().layerProperties().type() != kLayerTypeNone; 355 bool clipToBoundsNeeded = isLayer ? false : properties().getClipToBounds(); 356 if (properties().getAlpha() < 1) { 357 if (isLayer) { 358 renderer.setOverrideLayerAlpha(properties().getAlpha()); 359 } else if (!properties().getHasOverlappingRendering()) { 360 renderer.scaleAlpha(properties().getAlpha()); 361 } else { 362 // TODO: should be able to store the size of a DL at record time and not 363 // have to pass it into this call. In fact, this information might be in the 364 // location/size info that we store with the new native transform data. 365 int saveFlags = SkCanvas::kHasAlphaLayer_SaveFlag; 366 if (clipToBoundsNeeded) { 367 saveFlags |= SkCanvas::kClipToLayer_SaveFlag; 368 clipToBoundsNeeded = false; // clipping done by saveLayer 369 } 370 371 SaveLayerOp* op = new (handler.allocator()) SaveLayerOp( 372 0, 0, properties().getWidth(), properties().getHeight(), 373 properties().getAlpha() * 255, saveFlags); 374 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 375 } 376 } 377 if (clipToBoundsNeeded) { 378 ClipRectOp* op = new (handler.allocator()) ClipRectOp( 379 0, 0, properties().getWidth(), properties().getHeight(), SkRegion::kIntersect_Op); 380 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 381 } 382 383 if (CC_UNLIKELY(properties().hasClippingPath())) { 384 ClipPathOp* op = new (handler.allocator()) ClipPathOp( 385 properties().getClippingPath(), properties().getClippingPathOp()); 386 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 387 } 388} 389 390/** 391 * Apply property-based transformations to input matrix 392 * 393 * If true3dTransform is set to true, the transform applied to the input matrix will use true 4x4 394 * matrix computation instead of the Skia 3x3 matrix + camera hackery. 395 */ 396void RenderNode::applyViewPropertyTransforms(mat4& matrix, bool true3dTransform) { 397 if (properties().getLeft() != 0 || properties().getTop() != 0) { 398 matrix.translate(properties().getLeft(), properties().getTop()); 399 } 400 if (properties().getStaticMatrix()) { 401 mat4 stat(*properties().getStaticMatrix()); 402 matrix.multiply(stat); 403 } else if (properties().getAnimationMatrix()) { 404 mat4 anim(*properties().getAnimationMatrix()); 405 matrix.multiply(anim); 406 } 407 408 bool applyTranslationZ = true3dTransform && !MathUtils::isZero(properties().getZ()); 409 if (properties().hasTransformMatrix() || applyTranslationZ) { 410 if (properties().isTransformTranslateOnly()) { 411 matrix.translate(properties().getTranslationX(), properties().getTranslationY(), 412 true3dTransform ? properties().getZ() : 0.0f); 413 } else { 414 if (!true3dTransform) { 415 matrix.multiply(*properties().getTransformMatrix()); 416 } else { 417 mat4 true3dMat; 418 true3dMat.loadTranslate( 419 properties().getPivotX() + properties().getTranslationX(), 420 properties().getPivotY() + properties().getTranslationY(), 421 properties().getZ()); 422 true3dMat.rotate(properties().getRotationX(), 1, 0, 0); 423 true3dMat.rotate(properties().getRotationY(), 0, 1, 0); 424 true3dMat.rotate(properties().getRotation(), 0, 0, 1); 425 true3dMat.scale(properties().getScaleX(), properties().getScaleY(), 1); 426 true3dMat.translate(-properties().getPivotX(), -properties().getPivotY()); 427 428 matrix.multiply(true3dMat); 429 } 430 } 431 } 432} 433 434/** 435 * Organizes the DisplayList hierarchy to prepare for background projection reordering. 436 * 437 * This should be called before a call to defer() or drawDisplayList() 438 * 439 * Each DisplayList that serves as a 3d root builds its list of composited children, 440 * which are flagged to not draw in the standard draw loop. 441 */ 442void RenderNode::computeOrdering() { 443 ATRACE_CALL(); 444 mProjectedNodes.clear(); 445 446 // TODO: create temporary DDLOp and call computeOrderingImpl on top DisplayList so that 447 // transform properties are applied correctly to top level children 448 if (mDisplayListData == NULL) return; 449 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 450 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 451 childOp->mRenderNode->computeOrderingImpl(childOp, 452 properties().getOutline().getPath(), &mProjectedNodes, &mat4::identity()); 453 } 454} 455 456void RenderNode::computeOrderingImpl( 457 DrawRenderNodeOp* opState, 458 const SkPath* outlineOfProjectionSurface, 459 Vector<DrawRenderNodeOp*>* compositedChildrenOfProjectionSurface, 460 const mat4* transformFromProjectionSurface) { 461 mProjectedNodes.clear(); 462 if (mDisplayListData == NULL || mDisplayListData->isEmpty()) return; 463 464 // TODO: should avoid this calculation in most cases 465 // TODO: just calculate single matrix, down to all leaf composited elements 466 Matrix4 localTransformFromProjectionSurface(*transformFromProjectionSurface); 467 localTransformFromProjectionSurface.multiply(opState->mTransformFromParent); 468 469 if (properties().getProjectBackwards()) { 470 // composited projectee, flag for out of order draw, save matrix, and store in proj surface 471 opState->mSkipInOrderDraw = true; 472 opState->mTransformFromCompositingAncestor.load(localTransformFromProjectionSurface); 473 compositedChildrenOfProjectionSurface->add(opState); 474 } else { 475 // standard in order draw 476 opState->mSkipInOrderDraw = false; 477 } 478 479 if (mDisplayListData->children().size() > 0) { 480 const bool isProjectionReceiver = mDisplayListData->projectionReceiveIndex >= 0; 481 bool haveAppliedPropertiesToProjection = false; 482 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 483 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 484 RenderNode* child = childOp->mRenderNode; 485 486 const SkPath* projectionOutline = NULL; 487 Vector<DrawRenderNodeOp*>* projectionChildren = NULL; 488 const mat4* projectionTransform = NULL; 489 if (isProjectionReceiver && !child->properties().getProjectBackwards()) { 490 // if receiving projections, collect projecting descendent 491 492 // Note that if a direct descendent is projecting backwards, we pass it's 493 // grandparent projection collection, since it shouldn't project onto it's 494 // parent, where it will already be drawing. 495 projectionOutline = properties().getOutline().getPath(); 496 projectionChildren = &mProjectedNodes; 497 projectionTransform = &mat4::identity(); 498 } else { 499 if (!haveAppliedPropertiesToProjection) { 500 applyViewPropertyTransforms(localTransformFromProjectionSurface); 501 haveAppliedPropertiesToProjection = true; 502 } 503 projectionOutline = outlineOfProjectionSurface; 504 projectionChildren = compositedChildrenOfProjectionSurface; 505 projectionTransform = &localTransformFromProjectionSurface; 506 } 507 child->computeOrderingImpl(childOp, 508 projectionOutline, projectionChildren, projectionTransform); 509 } 510 } 511} 512 513class DeferOperationHandler { 514public: 515 DeferOperationHandler(DeferStateStruct& deferStruct, int level) 516 : mDeferStruct(deferStruct), mLevel(level) {} 517 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 518 operation->defer(mDeferStruct, saveCount, mLevel, clipToBounds); 519 } 520 inline LinearAllocator& allocator() { return *(mDeferStruct.mAllocator); } 521 inline void startMark(const char* name) {} // do nothing 522 inline void endMark() {} 523 inline int level() { return mLevel; } 524 inline int replayFlags() { return mDeferStruct.mReplayFlags; } 525 526private: 527 DeferStateStruct& mDeferStruct; 528 const int mLevel; 529}; 530 531void RenderNode::defer(DeferStateStruct& deferStruct, const int level) { 532 DeferOperationHandler handler(deferStruct, level); 533 issueOperations<DeferOperationHandler>(deferStruct.mRenderer, handler); 534} 535 536class ReplayOperationHandler { 537public: 538 ReplayOperationHandler(ReplayStateStruct& replayStruct, int level) 539 : mReplayStruct(replayStruct), mLevel(level) {} 540 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 541#if DEBUG_DISPLAY_LIST_OPS_AS_EVENTS 542 mReplayStruct.mRenderer.eventMark(operation->name()); 543#endif 544 operation->replay(mReplayStruct, saveCount, mLevel, clipToBounds); 545 } 546 inline LinearAllocator& allocator() { return *(mReplayStruct.mAllocator); } 547 inline void startMark(const char* name) { 548 mReplayStruct.mRenderer.startMark(name); 549 } 550 inline void endMark() { 551 mReplayStruct.mRenderer.endMark(); 552 } 553 inline int level() { return mLevel; } 554 inline int replayFlags() { return mReplayStruct.mReplayFlags; } 555 556private: 557 ReplayStateStruct& mReplayStruct; 558 const int mLevel; 559}; 560 561void RenderNode::replay(ReplayStateStruct& replayStruct, const int level) { 562 ReplayOperationHandler handler(replayStruct, level); 563 issueOperations<ReplayOperationHandler>(replayStruct.mRenderer, handler); 564} 565 566void RenderNode::buildZSortedChildList(Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes) { 567 if (mDisplayListData == NULL || mDisplayListData->children().size() == 0) return; 568 569 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 570 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 571 RenderNode* child = childOp->mRenderNode; 572 float childZ = child->properties().getZ(); 573 574 if (!MathUtils::isZero(childZ)) { 575 zTranslatedNodes.add(ZDrawRenderNodeOpPair(childZ, childOp)); 576 childOp->mSkipInOrderDraw = true; 577 } else if (!child->properties().getProjectBackwards()) { 578 // regular, in order drawing DisplayList 579 childOp->mSkipInOrderDraw = false; 580 } 581 } 582 583 // Z sort 3d children (stable-ness makes z compare fall back to standard drawing order) 584 std::stable_sort(zTranslatedNodes.begin(), zTranslatedNodes.end()); 585} 586 587template <class T> 588void RenderNode::issueDrawShadowOperation(const Matrix4& transformFromParent, T& handler) { 589 if (properties().getAlpha() <= 0.0f || !properties().getOutline().getPath()) return; 590 591 mat4 shadowMatrixXY(transformFromParent); 592 applyViewPropertyTransforms(shadowMatrixXY); 593 594 // Z matrix needs actual 3d transformation, so mapped z values will be correct 595 mat4 shadowMatrixZ(transformFromParent); 596 applyViewPropertyTransforms(shadowMatrixZ, true); 597 598 const SkPath* outlinePath = properties().getOutline().getPath(); 599 const RevealClip& revealClip = properties().getRevealClip(); 600 const SkPath* revealClipPath = revealClip.hasConvexClip() 601 ? revealClip.getPath() : NULL; // only pass the reveal clip's path if it's convex 602 603 if (revealClipPath && revealClipPath->isEmpty()) return; 604 605 /** 606 * The drawing area of the caster is always the same as the its perimeter (which 607 * the shadow system uses) *except* in the inverse clip case. Inform the shadow 608 * system that the caster's drawing area (as opposed to its perimeter) has been 609 * clipped, so that it knows the caster can't be opaque. 610 */ 611 bool casterUnclipped = !revealClip.willClip() || revealClip.hasConvexClip(); 612 613 DisplayListOp* shadowOp = new (handler.allocator()) DrawShadowOp( 614 shadowMatrixXY, shadowMatrixZ, 615 properties().getAlpha(), casterUnclipped, 616 outlinePath, revealClipPath); 617 handler(shadowOp, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 618} 619 620template <class T> 621int RenderNode::issueOperationsOfNegZChildren( 622 const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 623 OpenGLRenderer& renderer, T& handler) { 624 if (zTranslatedNodes.isEmpty()) return -1; 625 626 // create a save around the body of the ViewGroup's draw method, so that 627 // matrix/clip methods don't affect composited children 628 int shadowSaveCount = renderer.getSaveCount(); 629 handler(new (handler.allocator()) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 630 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 631 632 issueOperationsOf3dChildren(zTranslatedNodes, kNegativeZChildren, renderer, handler); 633 return shadowSaveCount; 634} 635 636template <class T> 637void RenderNode::issueOperationsOfPosZChildren(int shadowRestoreTo, 638 const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 639 OpenGLRenderer& renderer, T& handler) { 640 if (zTranslatedNodes.isEmpty()) return; 641 642 LOG_ALWAYS_FATAL_IF(shadowRestoreTo < 0, "invalid save to restore to"); 643 handler(new (handler.allocator()) RestoreToCountOp(shadowRestoreTo), 644 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 645 renderer.setOverrideLayerAlpha(1.0f); 646 647 issueOperationsOf3dChildren(zTranslatedNodes, kPositiveZChildren, renderer, handler); 648} 649 650#define SHADOW_DELTA 0.1f 651 652template <class T> 653void RenderNode::issueOperationsOf3dChildren(const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 654 ChildrenSelectMode mode, OpenGLRenderer& renderer, T& handler) { 655 const int size = zTranslatedNodes.size(); 656 if (size == 0 657 || (mode == kNegativeZChildren && zTranslatedNodes[0].key > 0.0f) 658 || (mode == kPositiveZChildren && zTranslatedNodes[size - 1].key < 0.0f)) { 659 // no 3d children to draw 660 return; 661 } 662 663 /** 664 * Draw shadows and (potential) casters mostly in order, but allow the shadows of casters 665 * with very similar Z heights to draw together. 666 * 667 * This way, if Views A & B have the same Z height and are both casting shadows, the shadows are 668 * underneath both, and neither's shadow is drawn on top of the other. 669 */ 670 const size_t nonNegativeIndex = findNonNegativeIndex(zTranslatedNodes); 671 size_t drawIndex, shadowIndex, endIndex; 672 if (mode == kNegativeZChildren) { 673 drawIndex = 0; 674 endIndex = nonNegativeIndex; 675 shadowIndex = endIndex; // draw no shadows 676 } else { 677 drawIndex = nonNegativeIndex; 678 endIndex = size; 679 shadowIndex = drawIndex; // potentially draw shadow for each pos Z child 680 } 681 682 DISPLAY_LIST_LOGD("%*s%d %s 3d children:", (handler.level() + 1) * 2, "", 683 endIndex - drawIndex, mode == kNegativeZChildren ? "negative" : "positive"); 684 685 float lastCasterZ = 0.0f; 686 while (shadowIndex < endIndex || drawIndex < endIndex) { 687 if (shadowIndex < endIndex) { 688 DrawRenderNodeOp* casterOp = zTranslatedNodes[shadowIndex].value; 689 RenderNode* caster = casterOp->mRenderNode; 690 const float casterZ = zTranslatedNodes[shadowIndex].key; 691 // attempt to render the shadow if the caster about to be drawn is its caster, 692 // OR if its caster's Z value is similar to the previous potential caster 693 if (shadowIndex == drawIndex || casterZ - lastCasterZ < SHADOW_DELTA) { 694 caster->issueDrawShadowOperation(casterOp->mTransformFromParent, handler); 695 696 lastCasterZ = casterZ; // must do this even if current caster not casting a shadow 697 shadowIndex++; 698 continue; 699 } 700 } 701 702 // only the actual child DL draw needs to be in save/restore, 703 // since it modifies the renderer's matrix 704 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 705 706 DrawRenderNodeOp* childOp = zTranslatedNodes[drawIndex].value; 707 RenderNode* child = childOp->mRenderNode; 708 709 renderer.concatMatrix(childOp->mTransformFromParent); 710 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 711 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 712 childOp->mSkipInOrderDraw = true; 713 714 renderer.restoreToCount(restoreTo); 715 drawIndex++; 716 } 717} 718 719template <class T> 720void RenderNode::issueOperationsOfProjectedChildren(OpenGLRenderer& renderer, T& handler) { 721 DISPLAY_LIST_LOGD("%*s%d projected children:", (handler.level() + 1) * 2, "", mProjectedNodes.size()); 722 const SkPath* projectionReceiverOutline = properties().getOutline().getPath(); 723 int restoreTo = renderer.getSaveCount(); 724 725 // If the projection reciever has an outline, we mask each of the projected rendernodes to it 726 // Either with clipRect, or special saveLayer masking 727 LinearAllocator& alloc = handler.allocator(); 728 if (projectionReceiverOutline != NULL) { 729 const SkRect& outlineBounds = projectionReceiverOutline->getBounds(); 730 if (projectionReceiverOutline->isRect(NULL)) { 731 // mask to the rect outline simply with clipRect 732 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 733 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 734 ClipRectOp* clipOp = new (alloc) ClipRectOp( 735 outlineBounds.left(), outlineBounds.top(), 736 outlineBounds.right(), outlineBounds.bottom(), SkRegion::kIntersect_Op); 737 handler(clipOp, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 738 } else { 739 // wrap the projected RenderNodes with a SaveLayer that will mask to the outline 740 SaveLayerOp* op = new (alloc) SaveLayerOp( 741 outlineBounds.left(), outlineBounds.top(), 742 outlineBounds.right(), outlineBounds.bottom(), 743 255, SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag | SkCanvas::kARGB_ClipLayer_SaveFlag); 744 op->setMask(projectionReceiverOutline); 745 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 746 747 /* TODO: add optimizations here to take advantage of placement/size of projected 748 * children (which may shrink saveLayer area significantly). This is dependent on 749 * passing actual drawing/dirtying bounds of projected content down to native. 750 */ 751 } 752 } 753 754 // draw projected nodes 755 for (size_t i = 0; i < mProjectedNodes.size(); i++) { 756 DrawRenderNodeOp* childOp = mProjectedNodes[i]; 757 758 // matrix save, concat, and restore can be done safely without allocating operations 759 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 760 renderer.concatMatrix(childOp->mTransformFromCompositingAncestor); 761 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 762 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 763 childOp->mSkipInOrderDraw = true; 764 renderer.restoreToCount(restoreTo); 765 } 766 767 if (projectionReceiverOutline != NULL) { 768 handler(new (alloc) RestoreToCountOp(restoreTo), 769 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 770 } 771} 772 773/** 774 * This function serves both defer and replay modes, and will organize the displayList's component 775 * operations for a single frame: 776 * 777 * Every 'simple' state operation that affects just the matrix and alpha (or other factors of 778 * DeferredDisplayState) may be issued directly to the renderer, but complex operations (with custom 779 * defer logic) and operations in displayListOps are issued through the 'handler' which handles the 780 * defer vs replay logic, per operation 781 */ 782template <class T> 783void RenderNode::issueOperations(OpenGLRenderer& renderer, T& handler) { 784 const int level = handler.level(); 785 if (mDisplayListData->isEmpty()) { 786 DISPLAY_LIST_LOGD("%*sEmpty display list (%p, %s)", level * 2, "", this, getName()); 787 return; 788 } 789 790 const bool drawLayer = (mLayer && (&renderer != mLayer->renderer)); 791 // If we are updating the contents of mLayer, we don't want to apply any of 792 // the RenderNode's properties to this issueOperations pass. Those will all 793 // be applied when the layer is drawn, aka when this is true. 794 const bool useViewProperties = (!mLayer || drawLayer); 795 if (useViewProperties) { 796 const Outline& outline = properties().getOutline(); 797 if (properties().getAlpha() <= 0 || (outline.getShouldClip() && outline.isEmpty())) { 798 DISPLAY_LIST_LOGD("%*sRejected display list (%p, %s)", level * 2, "", this, getName()); 799 return; 800 } 801 } 802 803 handler.startMark(getName()); 804 805#if DEBUG_DISPLAY_LIST 806 const Rect& clipRect = renderer.getLocalClipBounds(); 807 DISPLAY_LIST_LOGD("%*sStart display list (%p, %s), localClipBounds: %.0f, %.0f, %.0f, %.0f", 808 level * 2, "", this, getName(), 809 clipRect.left, clipRect.top, clipRect.right, clipRect.bottom); 810#endif 811 812 LinearAllocator& alloc = handler.allocator(); 813 int restoreTo = renderer.getSaveCount(); 814 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 815 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 816 817 DISPLAY_LIST_LOGD("%*sSave %d %d", (level + 1) * 2, "", 818 SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag, restoreTo); 819 820 if (useViewProperties) { 821 setViewProperties<T>(renderer, handler); 822 } 823 824 bool quickRejected = properties().getClipToBounds() 825 && renderer.quickRejectConservative(0, 0, properties().getWidth(), properties().getHeight()); 826 if (!quickRejected) { 827 if (mProperties.getOutline().willClip()) { 828 renderer.setClippingOutline(alloc, &(mProperties.getOutline())); 829 } 830 831 if (drawLayer) { 832 handler(new (alloc) DrawLayerOp(mLayer, 0, 0), 833 renderer.getSaveCount() - 1, properties().getClipToBounds()); 834 } else { 835 Vector<ZDrawRenderNodeOpPair> zTranslatedNodes; 836 buildZSortedChildList(zTranslatedNodes); 837 838 // for 3d root, draw children with negative z values 839 int shadowRestoreTo = issueOperationsOfNegZChildren(zTranslatedNodes, renderer, handler); 840 841 DisplayListLogBuffer& logBuffer = DisplayListLogBuffer::getInstance(); 842 const int saveCountOffset = renderer.getSaveCount() - 1; 843 const int projectionReceiveIndex = mDisplayListData->projectionReceiveIndex; 844 for (unsigned int i = 0; i < mDisplayListData->displayListOps.size(); i++) { 845 DisplayListOp *op = mDisplayListData->displayListOps[i]; 846 847#if DEBUG_DISPLAY_LIST 848 op->output(level + 1); 849#endif 850 logBuffer.writeCommand(level, op->name()); 851 handler(op, saveCountOffset, properties().getClipToBounds()); 852 853 if (CC_UNLIKELY(i == projectionReceiveIndex && mProjectedNodes.size() > 0)) { 854 issueOperationsOfProjectedChildren(renderer, handler); 855 } 856 } 857 858 // for 3d root, draw children with positive z values 859 issueOperationsOfPosZChildren(shadowRestoreTo, zTranslatedNodes, renderer, handler); 860 } 861 } 862 863 DISPLAY_LIST_LOGD("%*sRestoreToCount %d", (level + 1) * 2, "", restoreTo); 864 handler(new (alloc) RestoreToCountOp(restoreTo), 865 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 866 renderer.setOverrideLayerAlpha(1.0f); 867 868 DISPLAY_LIST_LOGD("%*sDone (%p, %s)", level * 2, "", this, getName()); 869 handler.endMark(); 870} 871 872} /* namespace uirenderer */ 873} /* namespace android */ 874