RenderNode.cpp revision 69e5adffb19135d51bde8e458f4907d7265f3e23
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 if (mDisplayListData) { 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->allocator.usedSize(); 110 } 111 if (mDisplayListData && mDisplayListData != mStagingDisplayListData) { 112 size += mDisplayListData->allocator.usedSize(); 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().layerProperties().type(); 142 if (CC_UNLIKELY(layerType == kLayerTypeRenderLayer)) { 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().layerProperties().type(); 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 != kLayerTypeRenderLayer) || CC_UNLIKELY(!isRenderable())) { 160 if (CC_UNLIKELY(mLayer)) { 161 LayerRenderer::destroyLayer(mLayer); 162 mLayer = NULL; 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 = 0; 177 } 178 damageSelf(info); 179 transformUpdateNeeded = true; 180 } 181 182 if (transformUpdateNeeded) { 183 // update the transform in window of the layer to reset its origin wrt light source position 184 Matrix4 windowTransform; 185 info.damageAccumulator->computeCurrentTransform(&windowTransform); 186 mLayer->setWindowTransform(windowTransform); 187 } 188 189 SkRect dirty; 190 info.damageAccumulator->peekAtDirty(&dirty); 191 192 if (!mLayer) { 193 if (info.errorHandler) { 194 std::string msg = "Unable to create layer for "; 195 msg += getName(); 196 info.errorHandler->onError(msg); 197 } 198 return; 199 } 200 201 202 if (dirty.intersect(0, 0, getWidth(), getHeight())) { 203 dirty.roundOut(); 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 213void RenderNode::prepareTreeImpl(TreeInfo& info) { 214 info.damageAccumulator->pushTransform(this); 215 216 if (info.mode == TreeInfo::MODE_FULL) { 217 pushStagingPropertiesChanges(info); 218 } 219 uint32_t animatorDirtyMask = mAnimatorManager.animate(info); 220 prepareLayer(info, animatorDirtyMask); 221 if (info.mode == TreeInfo::MODE_FULL) { 222 pushStagingDisplayListChanges(info); 223 } 224 prepareSubTree(info, mDisplayListData); 225 pushLayerUpdate(info); 226 227 info.damageAccumulator->popTransform(); 228} 229 230void RenderNode::pushStagingPropertiesChanges(TreeInfo& info) { 231 // Push the animators first so that setupStartValueIfNecessary() is called 232 // before properties() is trampled by stagingProperties(), as they are 233 // required by some animators. 234 mAnimatorManager.pushStaging(info); 235 if (mDirtyPropertyFields) { 236 mDirtyPropertyFields = 0; 237 damageSelf(info); 238 info.damageAccumulator->popTransform(); 239 mProperties = mStagingProperties; 240 applyLayerPropertiesToLayer(info); 241 // We could try to be clever and only re-damage if the matrix changed. 242 // However, we don't need to worry about that. The cost of over-damaging 243 // here is only going to be a single additional map rect of this node 244 // plus a rect join(). The parent's transform (and up) will only be 245 // performed once. 246 info.damageAccumulator->pushTransform(this); 247 damageSelf(info); 248 } 249} 250 251void RenderNode::applyLayerPropertiesToLayer(TreeInfo& info) { 252 if (CC_LIKELY(!mLayer)) return; 253 254 const LayerProperties& props = properties().layerProperties(); 255 mLayer->setAlpha(props.alpha(), props.xferMode()); 256 mLayer->setColorFilter(props.colorFilter()); 257 mLayer->setBlend(props.needsBlending()); 258} 259 260void RenderNode::pushStagingDisplayListChanges(TreeInfo& info) { 261 if (mNeedsDisplayListDataSync) { 262 mNeedsDisplayListDataSync = false; 263 // Make sure we inc first so that we don't fluctuate between 0 and 1, 264 // which would thrash the layer cache 265 if (mStagingDisplayListData) { 266 for (size_t i = 0; i < mStagingDisplayListData->children().size(); i++) { 267 mStagingDisplayListData->children()[i]->mRenderNode->incParentRefCount(); 268 } 269 } 270 deleteDisplayListData(); 271 mDisplayListData = mStagingDisplayListData; 272 mStagingDisplayListData = NULL; 273 if (mDisplayListData) { 274 for (size_t i = 0; i < mDisplayListData->functors.size(); i++) { 275 (*mDisplayListData->functors[i])(DrawGlInfo::kModeSync, NULL); 276 } 277 } 278 damageSelf(info); 279 } 280} 281 282void RenderNode::deleteDisplayListData() { 283 if (mDisplayListData) { 284 for (size_t i = 0; i < mDisplayListData->children().size(); i++) { 285 mDisplayListData->children()[i]->mRenderNode->decParentRefCount(); 286 } 287 } 288 delete mDisplayListData; 289 mDisplayListData = NULL; 290} 291 292void RenderNode::prepareSubTree(TreeInfo& info, DisplayListData* subtree) { 293 if (subtree) { 294 TextureCache& cache = Caches::getInstance().textureCache; 295 info.out.hasFunctors |= subtree->functors.size(); 296 // TODO: Fix ownedBitmapResources to not require disabling prepareTextures 297 // and thus falling out of async drawing path. 298 if (subtree->ownedBitmapResources.size()) { 299 info.prepareTextures = false; 300 } 301 for (size_t i = 0; info.prepareTextures && i < subtree->bitmapResources.size(); i++) { 302 info.prepareTextures = cache.prefetchAndMarkInUse(subtree->bitmapResources[i]); 303 } 304 for (size_t i = 0; i < subtree->children().size(); i++) { 305 DrawRenderNodeOp* op = subtree->children()[i]; 306 RenderNode* childNode = op->mRenderNode; 307 info.damageAccumulator->pushTransform(&op->mTransformFromParent); 308 childNode->prepareTreeImpl(info); 309 info.damageAccumulator->popTransform(); 310 } 311 } 312} 313 314void RenderNode::destroyHardwareResources() { 315 if (mLayer) { 316 LayerRenderer::destroyLayer(mLayer); 317 mLayer = NULL; 318 } 319 if (mDisplayListData) { 320 for (size_t i = 0; i < mDisplayListData->children().size(); i++) { 321 mDisplayListData->children()[i]->mRenderNode->destroyHardwareResources(); 322 } 323 if (mNeedsDisplayListDataSync) { 324 // Next prepare tree we are going to push a new display list, so we can 325 // drop our current one now 326 deleteDisplayListData(); 327 } 328 } 329} 330 331void RenderNode::decParentRefCount() { 332 LOG_ALWAYS_FATAL_IF(!mParentCount, "already 0!"); 333 mParentCount--; 334 if (!mParentCount) { 335 // If a child of ours is being attached to our parent then this will incorrectly 336 // destroy its hardware resources. However, this situation is highly unlikely 337 // and the failure is "just" that the layer is re-created, so this should 338 // be safe enough 339 destroyHardwareResources(); 340 } 341} 342 343/* 344 * For property operations, we pass a savecount of 0, since the operations aren't part of the 345 * displaylist, and thus don't have to compensate for the record-time/playback-time discrepancy in 346 * base saveCount (i.e., how RestoreToCount uses saveCount + properties().getCount()) 347 */ 348#define PROPERTY_SAVECOUNT 0 349 350template <class T> 351void RenderNode::setViewProperties(OpenGLRenderer& renderer, T& handler) { 352#if DEBUG_DISPLAY_LIST 353 properties().debugOutputProperties(handler.level() + 1); 354#endif 355 if (properties().getLeft() != 0 || properties().getTop() != 0) { 356 renderer.translate(properties().getLeft(), properties().getTop()); 357 } 358 if (properties().getStaticMatrix()) { 359 renderer.concatMatrix(*properties().getStaticMatrix()); 360 } else if (properties().getAnimationMatrix()) { 361 renderer.concatMatrix(*properties().getAnimationMatrix()); 362 } 363 if (properties().hasTransformMatrix()) { 364 if (properties().isTransformTranslateOnly()) { 365 renderer.translate(properties().getTranslationX(), properties().getTranslationY()); 366 } else { 367 renderer.concatMatrix(*properties().getTransformMatrix()); 368 } 369 } 370 const bool isLayer = properties().layerProperties().type() != kLayerTypeNone; 371 int clipFlags = properties().getClippingFlags(); 372 if (properties().getAlpha() < 1) { 373 if (isLayer) { 374 clipFlags &= ~CLIP_TO_BOUNDS; // bounds clipping done by layer 375 376 renderer.setOverrideLayerAlpha(properties().getAlpha()); 377 } else if (!properties().getHasOverlappingRendering()) { 378 renderer.scaleAlpha(properties().getAlpha()); 379 } else { 380 Rect layerBounds(0, 0, getWidth(), getHeight()); 381 int saveFlags = SkCanvas::kHasAlphaLayer_SaveFlag; 382 if (clipFlags) { 383 saveFlags |= SkCanvas::kClipToLayer_SaveFlag; 384 properties().getClippingRectForFlags(clipFlags, &layerBounds); 385 clipFlags = 0; // all clipping done by saveLayer 386 } 387 388 SaveLayerOp* op = new (handler.allocator()) SaveLayerOp( 389 layerBounds.left, layerBounds.top, layerBounds.right, layerBounds.bottom, 390 properties().getAlpha() * 255, saveFlags); 391 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 392 } 393 } 394 if (clipFlags) { 395 Rect clipRect; 396 properties().getClippingRectForFlags(clipFlags, &clipRect); 397 ClipRectOp* op = new (handler.allocator()) ClipRectOp( 398 clipRect.left, clipRect.top, clipRect.right, clipRect.bottom, 399 SkRegion::kIntersect_Op); 400 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 401 } 402 403 // TODO: support both reveal clip and outline clip simultaneously 404 if (mProperties.getRevealClip().willClip()) { 405 Rect bounds; 406 mProperties.getRevealClip().getBounds(&bounds); 407 renderer.setClippingRoundRect(handler.allocator(), bounds, mProperties.getRevealClip().getRadius()); 408 } else if (mProperties.getOutline().willClip()) { 409 renderer.setClippingOutline(handler.allocator(), &(mProperties.getOutline())); 410 } 411 412} 413 414/** 415 * Apply property-based transformations to input matrix 416 * 417 * If true3dTransform is set to true, the transform applied to the input matrix will use true 4x4 418 * matrix computation instead of the Skia 3x3 matrix + camera hackery. 419 */ 420void RenderNode::applyViewPropertyTransforms(mat4& matrix, bool true3dTransform) const { 421 if (properties().getLeft() != 0 || properties().getTop() != 0) { 422 matrix.translate(properties().getLeft(), properties().getTop()); 423 } 424 if (properties().getStaticMatrix()) { 425 mat4 stat(*properties().getStaticMatrix()); 426 matrix.multiply(stat); 427 } else if (properties().getAnimationMatrix()) { 428 mat4 anim(*properties().getAnimationMatrix()); 429 matrix.multiply(anim); 430 } 431 432 bool applyTranslationZ = true3dTransform && !MathUtils::isZero(properties().getZ()); 433 if (properties().hasTransformMatrix() || applyTranslationZ) { 434 if (properties().isTransformTranslateOnly()) { 435 matrix.translate(properties().getTranslationX(), properties().getTranslationY(), 436 true3dTransform ? properties().getZ() : 0.0f); 437 } else { 438 if (!true3dTransform) { 439 matrix.multiply(*properties().getTransformMatrix()); 440 } else { 441 mat4 true3dMat; 442 true3dMat.loadTranslate( 443 properties().getPivotX() + properties().getTranslationX(), 444 properties().getPivotY() + properties().getTranslationY(), 445 properties().getZ()); 446 true3dMat.rotate(properties().getRotationX(), 1, 0, 0); 447 true3dMat.rotate(properties().getRotationY(), 0, 1, 0); 448 true3dMat.rotate(properties().getRotation(), 0, 0, 1); 449 true3dMat.scale(properties().getScaleX(), properties().getScaleY(), 1); 450 true3dMat.translate(-properties().getPivotX(), -properties().getPivotY()); 451 452 matrix.multiply(true3dMat); 453 } 454 } 455 } 456} 457 458/** 459 * Organizes the DisplayList hierarchy to prepare for background projection reordering. 460 * 461 * This should be called before a call to defer() or drawDisplayList() 462 * 463 * Each DisplayList that serves as a 3d root builds its list of composited children, 464 * which are flagged to not draw in the standard draw loop. 465 */ 466void RenderNode::computeOrdering() { 467 ATRACE_CALL(); 468 mProjectedNodes.clear(); 469 470 // TODO: create temporary DDLOp and call computeOrderingImpl on top DisplayList so that 471 // transform properties are applied correctly to top level children 472 if (mDisplayListData == NULL) return; 473 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 474 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 475 childOp->mRenderNode->computeOrderingImpl(childOp, 476 properties().getOutline().getPath(), &mProjectedNodes, &mat4::identity()); 477 } 478} 479 480void RenderNode::computeOrderingImpl( 481 DrawRenderNodeOp* opState, 482 const SkPath* outlineOfProjectionSurface, 483 Vector<DrawRenderNodeOp*>* compositedChildrenOfProjectionSurface, 484 const mat4* transformFromProjectionSurface) { 485 mProjectedNodes.clear(); 486 if (mDisplayListData == NULL || mDisplayListData->isEmpty()) return; 487 488 // TODO: should avoid this calculation in most cases 489 // TODO: just calculate single matrix, down to all leaf composited elements 490 Matrix4 localTransformFromProjectionSurface(*transformFromProjectionSurface); 491 localTransformFromProjectionSurface.multiply(opState->mTransformFromParent); 492 493 if (properties().getProjectBackwards()) { 494 // composited projectee, flag for out of order draw, save matrix, and store in proj surface 495 opState->mSkipInOrderDraw = true; 496 opState->mTransformFromCompositingAncestor.load(localTransformFromProjectionSurface); 497 compositedChildrenOfProjectionSurface->add(opState); 498 } else { 499 // standard in order draw 500 opState->mSkipInOrderDraw = false; 501 } 502 503 if (mDisplayListData->children().size() > 0) { 504 const bool isProjectionReceiver = mDisplayListData->projectionReceiveIndex >= 0; 505 bool haveAppliedPropertiesToProjection = false; 506 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 507 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 508 RenderNode* child = childOp->mRenderNode; 509 510 const SkPath* projectionOutline = NULL; 511 Vector<DrawRenderNodeOp*>* projectionChildren = NULL; 512 const mat4* projectionTransform = NULL; 513 if (isProjectionReceiver && !child->properties().getProjectBackwards()) { 514 // if receiving projections, collect projecting descendent 515 516 // Note that if a direct descendent is projecting backwards, we pass it's 517 // grandparent projection collection, since it shouldn't project onto it's 518 // parent, where it will already be drawing. 519 projectionOutline = properties().getOutline().getPath(); 520 projectionChildren = &mProjectedNodes; 521 projectionTransform = &mat4::identity(); 522 } else { 523 if (!haveAppliedPropertiesToProjection) { 524 applyViewPropertyTransforms(localTransformFromProjectionSurface); 525 haveAppliedPropertiesToProjection = true; 526 } 527 projectionOutline = outlineOfProjectionSurface; 528 projectionChildren = compositedChildrenOfProjectionSurface; 529 projectionTransform = &localTransformFromProjectionSurface; 530 } 531 child->computeOrderingImpl(childOp, 532 projectionOutline, projectionChildren, projectionTransform); 533 } 534 } 535} 536 537class DeferOperationHandler { 538public: 539 DeferOperationHandler(DeferStateStruct& deferStruct, int level) 540 : mDeferStruct(deferStruct), mLevel(level) {} 541 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 542 operation->defer(mDeferStruct, saveCount, mLevel, clipToBounds); 543 } 544 inline LinearAllocator& allocator() { return *(mDeferStruct.mAllocator); } 545 inline void startMark(const char* name) {} // do nothing 546 inline void endMark() {} 547 inline int level() { return mLevel; } 548 inline int replayFlags() { return mDeferStruct.mReplayFlags; } 549 inline SkPath* allocPathForFrame() { return mDeferStruct.allocPathForFrame(); } 550 551private: 552 DeferStateStruct& mDeferStruct; 553 const int mLevel; 554}; 555 556void RenderNode::defer(DeferStateStruct& deferStruct, const int level) { 557 DeferOperationHandler handler(deferStruct, level); 558 issueOperations<DeferOperationHandler>(deferStruct.mRenderer, handler); 559} 560 561class ReplayOperationHandler { 562public: 563 ReplayOperationHandler(ReplayStateStruct& replayStruct, int level) 564 : mReplayStruct(replayStruct), mLevel(level) {} 565 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 566#if DEBUG_DISPLAY_LIST_OPS_AS_EVENTS 567 mReplayStruct.mRenderer.eventMark(operation->name()); 568#endif 569 operation->replay(mReplayStruct, saveCount, mLevel, clipToBounds); 570 } 571 inline LinearAllocator& allocator() { return *(mReplayStruct.mAllocator); } 572 inline void startMark(const char* name) { 573 mReplayStruct.mRenderer.startMark(name); 574 } 575 inline void endMark() { 576 mReplayStruct.mRenderer.endMark(); 577 } 578 inline int level() { return mLevel; } 579 inline int replayFlags() { return mReplayStruct.mReplayFlags; } 580 inline SkPath* allocPathForFrame() { return mReplayStruct.allocPathForFrame(); } 581 582private: 583 ReplayStateStruct& mReplayStruct; 584 const int mLevel; 585}; 586 587void RenderNode::replay(ReplayStateStruct& replayStruct, const int level) { 588 ReplayOperationHandler handler(replayStruct, level); 589 issueOperations<ReplayOperationHandler>(replayStruct.mRenderer, handler); 590} 591 592void RenderNode::buildZSortedChildList(Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes) { 593 if (mDisplayListData == NULL || mDisplayListData->children().size() == 0) return; 594 595 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 596 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 597 RenderNode* child = childOp->mRenderNode; 598 float childZ = child->properties().getZ(); 599 600 if (!MathUtils::isZero(childZ)) { 601 zTranslatedNodes.add(ZDrawRenderNodeOpPair(childZ, childOp)); 602 childOp->mSkipInOrderDraw = true; 603 } else if (!child->properties().getProjectBackwards()) { 604 // regular, in order drawing DisplayList 605 childOp->mSkipInOrderDraw = false; 606 } 607 } 608 609 // Z sort 3d children (stable-ness makes z compare fall back to standard drawing order) 610 std::stable_sort(zTranslatedNodes.begin(), zTranslatedNodes.end()); 611} 612 613template <class T> 614void RenderNode::issueDrawShadowOperation(const Matrix4& transformFromParent, T& handler) { 615 if (properties().getAlpha() <= 0.0f 616 || properties().getOutline().getAlpha() <= 0.0f 617 || !properties().getOutline().getPath()) { 618 // no shadow to draw 619 return; 620 } 621 622 mat4 shadowMatrixXY(transformFromParent); 623 applyViewPropertyTransforms(shadowMatrixXY); 624 625 // Z matrix needs actual 3d transformation, so mapped z values will be correct 626 mat4 shadowMatrixZ(transformFromParent); 627 applyViewPropertyTransforms(shadowMatrixZ, true); 628 629 const SkPath* casterOutlinePath = properties().getOutline().getPath(); 630 const SkPath* revealClipPath = properties().getRevealClip().getPath(); 631 if (revealClipPath && revealClipPath->isEmpty()) return; 632 633 float casterAlpha = properties().getAlpha() * properties().getOutline().getAlpha(); 634 635 const SkPath* outlinePath = casterOutlinePath; 636 if (revealClipPath) { 637 // if we can't simply use the caster's path directly, create a temporary one 638 SkPath* frameAllocatedPath = handler.allocPathForFrame(); 639 640 // intersect the outline with the convex reveal clip 641 Op(*casterOutlinePath, *revealClipPath, kIntersect_PathOp, frameAllocatedPath); 642 outlinePath = frameAllocatedPath; 643 } 644 645 DisplayListOp* shadowOp = new (handler.allocator()) DrawShadowOp( 646 shadowMatrixXY, shadowMatrixZ, casterAlpha, outlinePath); 647 handler(shadowOp, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 648} 649 650template <class T> 651int RenderNode::issueOperationsOfNegZChildren( 652 const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 653 OpenGLRenderer& renderer, T& handler) { 654 if (zTranslatedNodes.isEmpty()) return -1; 655 656 // create a save around the body of the ViewGroup's draw method, so that 657 // matrix/clip methods don't affect composited children 658 int shadowSaveCount = renderer.getSaveCount(); 659 handler(new (handler.allocator()) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 660 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 661 662 issueOperationsOf3dChildren(zTranslatedNodes, kNegativeZChildren, renderer, handler); 663 return shadowSaveCount; 664} 665 666template <class T> 667void RenderNode::issueOperationsOfPosZChildren(int shadowRestoreTo, 668 const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 669 OpenGLRenderer& renderer, T& handler) { 670 if (zTranslatedNodes.isEmpty()) return; 671 672 LOG_ALWAYS_FATAL_IF(shadowRestoreTo < 0, "invalid save to restore to"); 673 handler(new (handler.allocator()) RestoreToCountOp(shadowRestoreTo), 674 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 675 renderer.setOverrideLayerAlpha(1.0f); 676 677 issueOperationsOf3dChildren(zTranslatedNodes, kPositiveZChildren, renderer, handler); 678} 679 680#define SHADOW_DELTA 0.1f 681 682template <class T> 683void RenderNode::issueOperationsOf3dChildren(const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 684 ChildrenSelectMode mode, OpenGLRenderer& renderer, T& handler) { 685 const int size = zTranslatedNodes.size(); 686 if (size == 0 687 || (mode == kNegativeZChildren && zTranslatedNodes[0].key > 0.0f) 688 || (mode == kPositiveZChildren && zTranslatedNodes[size - 1].key < 0.0f)) { 689 // no 3d children to draw 690 return; 691 } 692 693 /** 694 * Draw shadows and (potential) casters mostly in order, but allow the shadows of casters 695 * with very similar Z heights to draw together. 696 * 697 * This way, if Views A & B have the same Z height and are both casting shadows, the shadows are 698 * underneath both, and neither's shadow is drawn on top of the other. 699 */ 700 const size_t nonNegativeIndex = findNonNegativeIndex(zTranslatedNodes); 701 size_t drawIndex, shadowIndex, endIndex; 702 if (mode == kNegativeZChildren) { 703 drawIndex = 0; 704 endIndex = nonNegativeIndex; 705 shadowIndex = endIndex; // draw no shadows 706 } else { 707 drawIndex = nonNegativeIndex; 708 endIndex = size; 709 shadowIndex = drawIndex; // potentially draw shadow for each pos Z child 710 } 711 712 DISPLAY_LIST_LOGD("%*s%d %s 3d children:", (handler.level() + 1) * 2, "", 713 endIndex - drawIndex, mode == kNegativeZChildren ? "negative" : "positive"); 714 715 float lastCasterZ = 0.0f; 716 while (shadowIndex < endIndex || drawIndex < endIndex) { 717 if (shadowIndex < endIndex) { 718 DrawRenderNodeOp* casterOp = zTranslatedNodes[shadowIndex].value; 719 RenderNode* caster = casterOp->mRenderNode; 720 const float casterZ = zTranslatedNodes[shadowIndex].key; 721 // attempt to render the shadow if the caster about to be drawn is its caster, 722 // OR if its caster's Z value is similar to the previous potential caster 723 if (shadowIndex == drawIndex || casterZ - lastCasterZ < SHADOW_DELTA) { 724 caster->issueDrawShadowOperation(casterOp->mTransformFromParent, handler); 725 726 lastCasterZ = casterZ; // must do this even if current caster not casting a shadow 727 shadowIndex++; 728 continue; 729 } 730 } 731 732 // only the actual child DL draw needs to be in save/restore, 733 // since it modifies the renderer's matrix 734 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 735 736 DrawRenderNodeOp* childOp = zTranslatedNodes[drawIndex].value; 737 RenderNode* child = childOp->mRenderNode; 738 739 renderer.concatMatrix(childOp->mTransformFromParent); 740 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 741 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 742 childOp->mSkipInOrderDraw = true; 743 744 renderer.restoreToCount(restoreTo); 745 drawIndex++; 746 } 747} 748 749template <class T> 750void RenderNode::issueOperationsOfProjectedChildren(OpenGLRenderer& renderer, T& handler) { 751 DISPLAY_LIST_LOGD("%*s%d projected children:", (handler.level() + 1) * 2, "", mProjectedNodes.size()); 752 const SkPath* projectionReceiverOutline = properties().getOutline().getPath(); 753 int restoreTo = renderer.getSaveCount(); 754 755 LinearAllocator& alloc = handler.allocator(); 756 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 757 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 758 759 // Transform renderer to match background we're projecting onto 760 // (by offsetting canvas by translationX/Y of background rendernode, since only those are set) 761 const DisplayListOp* op = 762 (mDisplayListData->displayListOps[mDisplayListData->projectionReceiveIndex]); 763 const DrawRenderNodeOp* backgroundOp = reinterpret_cast<const DrawRenderNodeOp*>(op); 764 const RenderProperties& backgroundProps = backgroundOp->mRenderNode->properties(); 765 renderer.translate(backgroundProps.getTranslationX(), backgroundProps.getTranslationY()); 766 767 // If the projection reciever has an outline, we mask each of the projected rendernodes to it 768 // Either with clipRect, or special saveLayer masking 769 if (projectionReceiverOutline != NULL) { 770 const SkRect& outlineBounds = projectionReceiverOutline->getBounds(); 771 if (projectionReceiverOutline->isRect(NULL)) { 772 // mask to the rect outline simply with clipRect 773 ClipRectOp* clipOp = new (alloc) ClipRectOp( 774 outlineBounds.left(), outlineBounds.top(), 775 outlineBounds.right(), outlineBounds.bottom(), SkRegion::kIntersect_Op); 776 handler(clipOp, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 777 } else { 778 // wrap the projected RenderNodes with a SaveLayer that will mask to the outline 779 SaveLayerOp* op = new (alloc) SaveLayerOp( 780 outlineBounds.left(), outlineBounds.top(), 781 outlineBounds.right(), outlineBounds.bottom(), 782 255, SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag | SkCanvas::kARGB_ClipLayer_SaveFlag); 783 op->setMask(projectionReceiverOutline); 784 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 785 786 /* TODO: add optimizations here to take advantage of placement/size of projected 787 * children (which may shrink saveLayer area significantly). This is dependent on 788 * passing actual drawing/dirtying bounds of projected content down to native. 789 */ 790 } 791 } 792 793 // draw projected nodes 794 for (size_t i = 0; i < mProjectedNodes.size(); i++) { 795 DrawRenderNodeOp* childOp = mProjectedNodes[i]; 796 797 // matrix save, concat, and restore can be done safely without allocating operations 798 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 799 renderer.concatMatrix(childOp->mTransformFromCompositingAncestor); 800 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 801 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 802 childOp->mSkipInOrderDraw = true; 803 renderer.restoreToCount(restoreTo); 804 } 805 806 if (projectionReceiverOutline != NULL) { 807 handler(new (alloc) RestoreToCountOp(restoreTo), 808 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 809 } 810} 811 812/** 813 * This function serves both defer and replay modes, and will organize the displayList's component 814 * operations for a single frame: 815 * 816 * Every 'simple' state operation that affects just the matrix and alpha (or other factors of 817 * DeferredDisplayState) may be issued directly to the renderer, but complex operations (with custom 818 * defer logic) and operations in displayListOps are issued through the 'handler' which handles the 819 * defer vs replay logic, per operation 820 */ 821template <class T> 822void RenderNode::issueOperations(OpenGLRenderer& renderer, T& handler) { 823 const int level = handler.level(); 824 if (mDisplayListData->isEmpty()) { 825 DISPLAY_LIST_LOGD("%*sEmpty display list (%p, %s)", level * 2, "", this, getName()); 826 return; 827 } 828 829 const bool drawLayer = (mLayer && (&renderer != mLayer->renderer)); 830 // If we are updating the contents of mLayer, we don't want to apply any of 831 // the RenderNode's properties to this issueOperations pass. Those will all 832 // be applied when the layer is drawn, aka when this is true. 833 const bool useViewProperties = (!mLayer || drawLayer); 834 if (useViewProperties) { 835 const Outline& outline = properties().getOutline(); 836 if (properties().getAlpha() <= 0 || (outline.getShouldClip() && outline.isEmpty())) { 837 DISPLAY_LIST_LOGD("%*sRejected display list (%p, %s)", level * 2, "", this, getName()); 838 return; 839 } 840 } 841 842 handler.startMark(getName()); 843 844#if DEBUG_DISPLAY_LIST 845 const Rect& clipRect = renderer.getLocalClipBounds(); 846 DISPLAY_LIST_LOGD("%*sStart display list (%p, %s), localClipBounds: %.0f, %.0f, %.0f, %.0f", 847 level * 2, "", this, getName(), 848 clipRect.left, clipRect.top, clipRect.right, clipRect.bottom); 849#endif 850 851 LinearAllocator& alloc = handler.allocator(); 852 int restoreTo = renderer.getSaveCount(); 853 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 854 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 855 856 DISPLAY_LIST_LOGD("%*sSave %d %d", (level + 1) * 2, "", 857 SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag, restoreTo); 858 859 if (useViewProperties) { 860 setViewProperties<T>(renderer, handler); 861 } 862 863 bool quickRejected = properties().getClipToBounds() 864 && renderer.quickRejectConservative(0, 0, properties().getWidth(), properties().getHeight()); 865 if (!quickRejected) { 866 if (drawLayer) { 867 handler(new (alloc) DrawLayerOp(mLayer, 0, 0), 868 renderer.getSaveCount() - 1, properties().getClipToBounds()); 869 } else { 870 Vector<ZDrawRenderNodeOpPair> zTranslatedNodes; 871 buildZSortedChildList(zTranslatedNodes); 872 873 // for 3d root, draw children with negative z values 874 int shadowRestoreTo = issueOperationsOfNegZChildren(zTranslatedNodes, renderer, handler); 875 876 DisplayListLogBuffer& logBuffer = DisplayListLogBuffer::getInstance(); 877 const int saveCountOffset = renderer.getSaveCount() - 1; 878 const int projectionReceiveIndex = mDisplayListData->projectionReceiveIndex; 879 const int size = static_cast<int>(mDisplayListData->displayListOps.size()); 880 for (int i = 0; i < size; i++) { 881 DisplayListOp *op = mDisplayListData->displayListOps[i]; 882 883#if DEBUG_DISPLAY_LIST 884 op->output(level + 1); 885#endif 886 logBuffer.writeCommand(level, op->name()); 887 handler(op, saveCountOffset, properties().getClipToBounds()); 888 889 if (CC_UNLIKELY(i == projectionReceiveIndex && mProjectedNodes.size() > 0)) { 890 issueOperationsOfProjectedChildren(renderer, handler); 891 } 892 } 893 894 // for 3d root, draw children with positive z values 895 issueOperationsOfPosZChildren(shadowRestoreTo, zTranslatedNodes, renderer, handler); 896 } 897 } 898 899 DISPLAY_LIST_LOGD("%*sRestoreToCount %d", (level + 1) * 2, "", restoreTo); 900 handler(new (alloc) RestoreToCountOp(restoreTo), 901 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 902 renderer.setOverrideLayerAlpha(1.0f); 903 904 DISPLAY_LIST_LOGD("%*sDone (%p, %s)", level * 2, "", this, getName()); 905 handler.endMark(); 906} 907 908} /* namespace uirenderer */ 909} /* namespace android */ 910