RenderNode.cpp revision a7c2ea20c43ab797bef5801530687e22e83def8f
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(); 119 120 prepareTreeImpl(info); 121} 122 123void RenderNode::addAnimator(const sp<BaseRenderNodeAnimator>& animator) { 124 mAnimatorManager.addAnimator(animator); 125} 126 127void RenderNode::damageSelf(TreeInfo& info) { 128 if (isRenderable()) { 129 if (properties().getClipDamageToBounds()) { 130 info.damageAccumulator->dirty(0, 0, properties().getWidth(), properties().getHeight()); 131 } else { 132 // Hope this is big enough? 133 // TODO: Get this from the display list ops or something 134 info.damageAccumulator->dirty(INT_MIN, INT_MIN, INT_MAX, INT_MAX); 135 } 136 } 137} 138 139void RenderNode::prepareLayer(TreeInfo& info, uint32_t dirtyMask) { 140 LayerType layerType = properties().layerProperties().type(); 141 if (CC_UNLIKELY(layerType == kLayerTypeRenderLayer)) { 142 // Damage applied so far needs to affect our parent, but does not require 143 // the layer to be updated. So we pop/push here to clear out the current 144 // damage and get a clean state for display list or children updates to 145 // affect, which will require the layer to be updated 146 info.damageAccumulator->popTransform(); 147 info.damageAccumulator->pushTransform(this); 148 if (dirtyMask & DISPLAY_LIST) { 149 damageSelf(info); 150 } 151 } 152} 153 154void RenderNode::pushLayerUpdate(TreeInfo& info) { 155 LayerType layerType = properties().layerProperties().type(); 156 // If we are not a layer OR we cannot be rendered (eg, view was detached) 157 // we need to destroy any Layers we may have had previously 158 if (CC_LIKELY(layerType != kLayerTypeRenderLayer) || CC_UNLIKELY(!isRenderable())) { 159 if (CC_UNLIKELY(mLayer)) { 160 LayerRenderer::destroyLayer(mLayer); 161 mLayer = NULL; 162 } 163 return; 164 } 165 166 if (!mLayer) { 167 mLayer = LayerRenderer::createRenderLayer(info.renderState, getWidth(), getHeight()); 168 applyLayerPropertiesToLayer(info); 169 damageSelf(info); 170 } else if (mLayer->layer.getWidth() != getWidth() || mLayer->layer.getHeight() != getHeight()) { 171 if (!LayerRenderer::resizeLayer(mLayer, getWidth(), getHeight())) { 172 LayerRenderer::destroyLayer(mLayer); 173 mLayer = 0; 174 } 175 damageSelf(info); 176 } 177 178 SkRect dirty; 179 info.damageAccumulator->peekAtDirty(&dirty); 180 181 if (!mLayer) { 182 if (info.errorHandler) { 183 std::string msg = "Unable to create layer for "; 184 msg += getName(); 185 info.errorHandler->onError(msg); 186 } 187 return; 188 } 189 190 191 if (dirty.intersect(0, 0, getWidth(), getHeight())) { 192 dirty.roundOut(); 193 mLayer->updateDeferred(this, dirty.fLeft, dirty.fTop, dirty.fRight, dirty.fBottom); 194 } 195 // This is not inside the above if because we may have called 196 // updateDeferred on a previous prepare pass that didn't have a renderer 197 if (info.renderer && mLayer->deferredUpdateScheduled) { 198 info.renderer->pushLayerUpdate(mLayer); 199 } 200} 201 202void RenderNode::prepareTreeImpl(TreeInfo& info) { 203 info.damageAccumulator->pushTransform(this); 204 205 if (info.mode == TreeInfo::MODE_FULL) { 206 pushStagingPropertiesChanges(info); 207 } 208 uint32_t animatorDirtyMask = mAnimatorManager.animate(info); 209 prepareLayer(info, animatorDirtyMask); 210 if (info.mode == TreeInfo::MODE_FULL) { 211 pushStagingDisplayListChanges(info); 212 } 213 prepareSubTree(info, mDisplayListData); 214 pushLayerUpdate(info); 215 216 info.damageAccumulator->popTransform(); 217} 218 219void RenderNode::pushStagingPropertiesChanges(TreeInfo& info) { 220 // Push the animators first so that setupStartValueIfNecessary() is called 221 // before properties() is trampled by stagingProperties(), as they are 222 // required by some animators. 223 mAnimatorManager.pushStaging(info); 224 if (mDirtyPropertyFields) { 225 mDirtyPropertyFields = 0; 226 damageSelf(info); 227 info.damageAccumulator->popTransform(); 228 mProperties = mStagingProperties; 229 applyLayerPropertiesToLayer(info); 230 // We could try to be clever and only re-damage if the matrix changed. 231 // However, we don't need to worry about that. The cost of over-damaging 232 // here is only going to be a single additional map rect of this node 233 // plus a rect join(). The parent's transform (and up) will only be 234 // performed once. 235 info.damageAccumulator->pushTransform(this); 236 damageSelf(info); 237 } 238} 239 240void RenderNode::applyLayerPropertiesToLayer(TreeInfo& info) { 241 if (CC_LIKELY(!mLayer)) return; 242 243 const LayerProperties& props = properties().layerProperties(); 244 mLayer->setAlpha(props.alpha(), props.xferMode()); 245 mLayer->setColorFilter(props.colorFilter()); 246 mLayer->setBlend(props.needsBlending()); 247} 248 249void RenderNode::pushStagingDisplayListChanges(TreeInfo& info) { 250 if (mNeedsDisplayListDataSync) { 251 mNeedsDisplayListDataSync = false; 252 // Make sure we inc first so that we don't fluctuate between 0 and 1, 253 // which would thrash the layer cache 254 if (mStagingDisplayListData) { 255 for (size_t i = 0; i < mStagingDisplayListData->children().size(); i++) { 256 mStagingDisplayListData->children()[i]->mRenderNode->incParentRefCount(); 257 } 258 } 259 deleteDisplayListData(); 260 mDisplayListData = mStagingDisplayListData; 261 mStagingDisplayListData = NULL; 262 if (mDisplayListData) { 263 for (size_t i = 0; i < mDisplayListData->functors.size(); i++) { 264 (*mDisplayListData->functors[i])(DrawGlInfo::kModeSync, NULL); 265 } 266 } 267 damageSelf(info); 268 } 269} 270 271void RenderNode::deleteDisplayListData() { 272 if (mDisplayListData) { 273 for (size_t i = 0; i < mDisplayListData->children().size(); i++) { 274 mDisplayListData->children()[i]->mRenderNode->decParentRefCount(); 275 } 276 } 277 delete mDisplayListData; 278 mDisplayListData = NULL; 279} 280 281void RenderNode::prepareSubTree(TreeInfo& info, DisplayListData* subtree) { 282 if (subtree) { 283 TextureCache& cache = Caches::getInstance().textureCache; 284 info.out.hasFunctors |= subtree->functors.size(); 285 // TODO: Fix ownedBitmapResources to not require disabling prepareTextures 286 // and thus falling out of async drawing path. 287 if (subtree->ownedBitmapResources.size()) { 288 info.prepareTextures = false; 289 } 290 for (size_t i = 0; info.prepareTextures && i < subtree->bitmapResources.size(); i++) { 291 info.prepareTextures = cache.prefetchAndMarkInUse(subtree->bitmapResources[i]); 292 } 293 for (size_t i = 0; i < subtree->children().size(); i++) { 294 DrawRenderNodeOp* op = subtree->children()[i]; 295 RenderNode* childNode = op->mRenderNode; 296 info.damageAccumulator->pushTransform(&op->mTransformFromParent); 297 childNode->prepareTreeImpl(info); 298 info.damageAccumulator->popTransform(); 299 } 300 } 301} 302 303void RenderNode::destroyHardwareResources() { 304 if (mLayer) { 305 LayerRenderer::destroyLayer(mLayer); 306 mLayer = NULL; 307 } 308 if (mDisplayListData) { 309 for (size_t i = 0; i < mDisplayListData->children().size(); i++) { 310 mDisplayListData->children()[i]->mRenderNode->destroyHardwareResources(); 311 } 312 if (mNeedsDisplayListDataSync) { 313 // Next prepare tree we are going to push a new display list, so we can 314 // drop our current one now 315 deleteDisplayListData(); 316 } 317 } 318} 319 320void RenderNode::decParentRefCount() { 321 LOG_ALWAYS_FATAL_IF(!mParentCount, "already 0!"); 322 mParentCount--; 323 if (!mParentCount) { 324 // If a child of ours is being attached to our parent then this will incorrectly 325 // destroy its hardware resources. However, this situation is highly unlikely 326 // and the failure is "just" that the layer is re-created, so this should 327 // be safe enough 328 destroyHardwareResources(); 329 } 330} 331 332/* 333 * For property operations, we pass a savecount of 0, since the operations aren't part of the 334 * displaylist, and thus don't have to compensate for the record-time/playback-time discrepancy in 335 * base saveCount (i.e., how RestoreToCount uses saveCount + properties().getCount()) 336 */ 337#define PROPERTY_SAVECOUNT 0 338 339template <class T> 340void RenderNode::setViewProperties(OpenGLRenderer& renderer, T& handler) { 341#if DEBUG_DISPLAY_LIST 342 properties().debugOutputProperties(handler.level() + 1); 343#endif 344 if (properties().getLeft() != 0 || properties().getTop() != 0) { 345 renderer.translate(properties().getLeft(), properties().getTop()); 346 } 347 if (properties().getStaticMatrix()) { 348 renderer.concatMatrix(*properties().getStaticMatrix()); 349 } else if (properties().getAnimationMatrix()) { 350 renderer.concatMatrix(*properties().getAnimationMatrix()); 351 } 352 if (properties().hasTransformMatrix()) { 353 if (properties().isTransformTranslateOnly()) { 354 renderer.translate(properties().getTranslationX(), properties().getTranslationY()); 355 } else { 356 renderer.concatMatrix(*properties().getTransformMatrix()); 357 } 358 } 359 const bool isLayer = properties().layerProperties().type() != kLayerTypeNone; 360 int clipFlags = properties().getClippingFlags(); 361 if (properties().getAlpha() < 1) { 362 if (isLayer) { 363 clipFlags &= ~CLIP_TO_BOUNDS; // bounds clipping done by layer 364 365 renderer.setOverrideLayerAlpha(properties().getAlpha()); 366 } else if (!properties().getHasOverlappingRendering()) { 367 renderer.scaleAlpha(properties().getAlpha()); 368 } else { 369 Rect layerBounds(0, 0, getWidth(), getHeight()); 370 int saveFlags = SkCanvas::kHasAlphaLayer_SaveFlag; 371 if (clipFlags) { 372 saveFlags |= SkCanvas::kClipToLayer_SaveFlag; 373 properties().getClippingRectForFlags(clipFlags, &layerBounds); 374 clipFlags = 0; // all clipping done by saveLayer 375 } 376 377 SaveLayerOp* op = new (handler.allocator()) SaveLayerOp( 378 layerBounds.left, layerBounds.top, layerBounds.right, layerBounds.bottom, 379 properties().getAlpha() * 255, saveFlags); 380 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 381 } 382 } 383 if (clipFlags) { 384 Rect clipRect; 385 properties().getClippingRectForFlags(clipFlags, &clipRect); 386 ClipRectOp* op = new (handler.allocator()) ClipRectOp( 387 clipRect.left, clipRect.top, clipRect.right, clipRect.bottom, 388 SkRegion::kIntersect_Op); 389 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 390 } 391 392 // TODO: support both reveal clip and outline clip simultaneously 393 if (mProperties.getRevealClip().willClip()) { 394 Rect bounds; 395 mProperties.getRevealClip().getBounds(&bounds); 396 renderer.setClippingRoundRect(handler.allocator(), bounds, mProperties.getRevealClip().getRadius()); 397 } else if (mProperties.getOutline().willClip()) { 398 renderer.setClippingOutline(handler.allocator(), &(mProperties.getOutline())); 399 } 400 401} 402 403/** 404 * Apply property-based transformations to input matrix 405 * 406 * If true3dTransform is set to true, the transform applied to the input matrix will use true 4x4 407 * matrix computation instead of the Skia 3x3 matrix + camera hackery. 408 */ 409void RenderNode::applyViewPropertyTransforms(mat4& matrix, bool true3dTransform) { 410 if (properties().getLeft() != 0 || properties().getTop() != 0) { 411 matrix.translate(properties().getLeft(), properties().getTop()); 412 } 413 if (properties().getStaticMatrix()) { 414 mat4 stat(*properties().getStaticMatrix()); 415 matrix.multiply(stat); 416 } else if (properties().getAnimationMatrix()) { 417 mat4 anim(*properties().getAnimationMatrix()); 418 matrix.multiply(anim); 419 } 420 421 bool applyTranslationZ = true3dTransform && !MathUtils::isZero(properties().getZ()); 422 if (properties().hasTransformMatrix() || applyTranslationZ) { 423 if (properties().isTransformTranslateOnly()) { 424 matrix.translate(properties().getTranslationX(), properties().getTranslationY(), 425 true3dTransform ? properties().getZ() : 0.0f); 426 } else { 427 if (!true3dTransform) { 428 matrix.multiply(*properties().getTransformMatrix()); 429 } else { 430 mat4 true3dMat; 431 true3dMat.loadTranslate( 432 properties().getPivotX() + properties().getTranslationX(), 433 properties().getPivotY() + properties().getTranslationY(), 434 properties().getZ()); 435 true3dMat.rotate(properties().getRotationX(), 1, 0, 0); 436 true3dMat.rotate(properties().getRotationY(), 0, 1, 0); 437 true3dMat.rotate(properties().getRotation(), 0, 0, 1); 438 true3dMat.scale(properties().getScaleX(), properties().getScaleY(), 1); 439 true3dMat.translate(-properties().getPivotX(), -properties().getPivotY()); 440 441 matrix.multiply(true3dMat); 442 } 443 } 444 } 445} 446 447/** 448 * Organizes the DisplayList hierarchy to prepare for background projection reordering. 449 * 450 * This should be called before a call to defer() or drawDisplayList() 451 * 452 * Each DisplayList that serves as a 3d root builds its list of composited children, 453 * which are flagged to not draw in the standard draw loop. 454 */ 455void RenderNode::computeOrdering() { 456 ATRACE_CALL(); 457 mProjectedNodes.clear(); 458 459 // TODO: create temporary DDLOp and call computeOrderingImpl on top DisplayList so that 460 // transform properties are applied correctly to top level children 461 if (mDisplayListData == NULL) return; 462 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 463 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 464 childOp->mRenderNode->computeOrderingImpl(childOp, 465 properties().getOutline().getPath(), &mProjectedNodes, &mat4::identity()); 466 } 467} 468 469void RenderNode::computeOrderingImpl( 470 DrawRenderNodeOp* opState, 471 const SkPath* outlineOfProjectionSurface, 472 Vector<DrawRenderNodeOp*>* compositedChildrenOfProjectionSurface, 473 const mat4* transformFromProjectionSurface) { 474 mProjectedNodes.clear(); 475 if (mDisplayListData == NULL || mDisplayListData->isEmpty()) return; 476 477 // TODO: should avoid this calculation in most cases 478 // TODO: just calculate single matrix, down to all leaf composited elements 479 Matrix4 localTransformFromProjectionSurface(*transformFromProjectionSurface); 480 localTransformFromProjectionSurface.multiply(opState->mTransformFromParent); 481 482 if (properties().getProjectBackwards()) { 483 // composited projectee, flag for out of order draw, save matrix, and store in proj surface 484 opState->mSkipInOrderDraw = true; 485 opState->mTransformFromCompositingAncestor.load(localTransformFromProjectionSurface); 486 compositedChildrenOfProjectionSurface->add(opState); 487 } else { 488 // standard in order draw 489 opState->mSkipInOrderDraw = false; 490 } 491 492 if (mDisplayListData->children().size() > 0) { 493 const bool isProjectionReceiver = mDisplayListData->projectionReceiveIndex >= 0; 494 bool haveAppliedPropertiesToProjection = false; 495 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 496 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 497 RenderNode* child = childOp->mRenderNode; 498 499 const SkPath* projectionOutline = NULL; 500 Vector<DrawRenderNodeOp*>* projectionChildren = NULL; 501 const mat4* projectionTransform = NULL; 502 if (isProjectionReceiver && !child->properties().getProjectBackwards()) { 503 // if receiving projections, collect projecting descendent 504 505 // Note that if a direct descendent is projecting backwards, we pass it's 506 // grandparent projection collection, since it shouldn't project onto it's 507 // parent, where it will already be drawing. 508 projectionOutline = properties().getOutline().getPath(); 509 projectionChildren = &mProjectedNodes; 510 projectionTransform = &mat4::identity(); 511 } else { 512 if (!haveAppliedPropertiesToProjection) { 513 applyViewPropertyTransforms(localTransformFromProjectionSurface); 514 haveAppliedPropertiesToProjection = true; 515 } 516 projectionOutline = outlineOfProjectionSurface; 517 projectionChildren = compositedChildrenOfProjectionSurface; 518 projectionTransform = &localTransformFromProjectionSurface; 519 } 520 child->computeOrderingImpl(childOp, 521 projectionOutline, projectionChildren, projectionTransform); 522 } 523 } 524} 525 526class DeferOperationHandler { 527public: 528 DeferOperationHandler(DeferStateStruct& deferStruct, int level) 529 : mDeferStruct(deferStruct), mLevel(level) {} 530 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 531 operation->defer(mDeferStruct, saveCount, mLevel, clipToBounds); 532 } 533 inline LinearAllocator& allocator() { return *(mDeferStruct.mAllocator); } 534 inline void startMark(const char* name) {} // do nothing 535 inline void endMark() {} 536 inline int level() { return mLevel; } 537 inline int replayFlags() { return mDeferStruct.mReplayFlags; } 538 inline SkPath* allocPathForFrame() { return mDeferStruct.allocPathForFrame(); } 539 540private: 541 DeferStateStruct& mDeferStruct; 542 const int mLevel; 543}; 544 545void RenderNode::defer(DeferStateStruct& deferStruct, const int level) { 546 DeferOperationHandler handler(deferStruct, level); 547 issueOperations<DeferOperationHandler>(deferStruct.mRenderer, handler); 548} 549 550class ReplayOperationHandler { 551public: 552 ReplayOperationHandler(ReplayStateStruct& replayStruct, int level) 553 : mReplayStruct(replayStruct), mLevel(level) {} 554 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 555#if DEBUG_DISPLAY_LIST_OPS_AS_EVENTS 556 mReplayStruct.mRenderer.eventMark(operation->name()); 557#endif 558 operation->replay(mReplayStruct, saveCount, mLevel, clipToBounds); 559 } 560 inline LinearAllocator& allocator() { return *(mReplayStruct.mAllocator); } 561 inline void startMark(const char* name) { 562 mReplayStruct.mRenderer.startMark(name); 563 } 564 inline void endMark() { 565 mReplayStruct.mRenderer.endMark(); 566 } 567 inline int level() { return mLevel; } 568 inline int replayFlags() { return mReplayStruct.mReplayFlags; } 569 inline SkPath* allocPathForFrame() { return mReplayStruct.allocPathForFrame(); } 570 571private: 572 ReplayStateStruct& mReplayStruct; 573 const int mLevel; 574}; 575 576void RenderNode::replay(ReplayStateStruct& replayStruct, const int level) { 577 ReplayOperationHandler handler(replayStruct, level); 578 issueOperations<ReplayOperationHandler>(replayStruct.mRenderer, handler); 579} 580 581void RenderNode::buildZSortedChildList(Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes) { 582 if (mDisplayListData == NULL || mDisplayListData->children().size() == 0) return; 583 584 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 585 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 586 RenderNode* child = childOp->mRenderNode; 587 float childZ = child->properties().getZ(); 588 589 if (!MathUtils::isZero(childZ)) { 590 zTranslatedNodes.add(ZDrawRenderNodeOpPair(childZ, childOp)); 591 childOp->mSkipInOrderDraw = true; 592 } else if (!child->properties().getProjectBackwards()) { 593 // regular, in order drawing DisplayList 594 childOp->mSkipInOrderDraw = false; 595 } 596 } 597 598 // Z sort 3d children (stable-ness makes z compare fall back to standard drawing order) 599 std::stable_sort(zTranslatedNodes.begin(), zTranslatedNodes.end()); 600} 601 602template <class T> 603void RenderNode::issueDrawShadowOperation(const Matrix4& transformFromParent, T& handler) { 604 if (properties().getAlpha() <= 0.0f 605 || properties().getOutline().getAlpha() <= 0.0f 606 || !properties().getOutline().getPath()) { 607 // no shadow to draw 608 return; 609 } 610 611 mat4 shadowMatrixXY(transformFromParent); 612 applyViewPropertyTransforms(shadowMatrixXY); 613 614 // Z matrix needs actual 3d transformation, so mapped z values will be correct 615 mat4 shadowMatrixZ(transformFromParent); 616 applyViewPropertyTransforms(shadowMatrixZ, true); 617 618 const SkPath* casterOutlinePath = properties().getOutline().getPath(); 619 const SkPath* revealClipPath = properties().getRevealClip().getPath(); 620 if (revealClipPath && revealClipPath->isEmpty()) return; 621 622 float casterAlpha = properties().getAlpha() * properties().getOutline().getAlpha(); 623 624 const SkPath* outlinePath = casterOutlinePath; 625 if (revealClipPath) { 626 // if we can't simply use the caster's path directly, create a temporary one 627 SkPath* frameAllocatedPath = handler.allocPathForFrame(); 628 629 // intersect the outline with the convex reveal clip 630 Op(*casterOutlinePath, *revealClipPath, kIntersect_PathOp, frameAllocatedPath); 631 outlinePath = frameAllocatedPath; 632 } 633 634 DisplayListOp* shadowOp = new (handler.allocator()) DrawShadowOp( 635 shadowMatrixXY, shadowMatrixZ, casterAlpha, outlinePath); 636 handler(shadowOp, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 637} 638 639template <class T> 640int RenderNode::issueOperationsOfNegZChildren( 641 const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 642 OpenGLRenderer& renderer, T& handler) { 643 if (zTranslatedNodes.isEmpty()) return -1; 644 645 // create a save around the body of the ViewGroup's draw method, so that 646 // matrix/clip methods don't affect composited children 647 int shadowSaveCount = renderer.getSaveCount(); 648 handler(new (handler.allocator()) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 649 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 650 651 issueOperationsOf3dChildren(zTranslatedNodes, kNegativeZChildren, renderer, handler); 652 return shadowSaveCount; 653} 654 655template <class T> 656void RenderNode::issueOperationsOfPosZChildren(int shadowRestoreTo, 657 const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 658 OpenGLRenderer& renderer, T& handler) { 659 if (zTranslatedNodes.isEmpty()) return; 660 661 LOG_ALWAYS_FATAL_IF(shadowRestoreTo < 0, "invalid save to restore to"); 662 handler(new (handler.allocator()) RestoreToCountOp(shadowRestoreTo), 663 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 664 renderer.setOverrideLayerAlpha(1.0f); 665 666 issueOperationsOf3dChildren(zTranslatedNodes, kPositiveZChildren, renderer, handler); 667} 668 669#define SHADOW_DELTA 0.1f 670 671template <class T> 672void RenderNode::issueOperationsOf3dChildren(const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 673 ChildrenSelectMode mode, OpenGLRenderer& renderer, T& handler) { 674 const int size = zTranslatedNodes.size(); 675 if (size == 0 676 || (mode == kNegativeZChildren && zTranslatedNodes[0].key > 0.0f) 677 || (mode == kPositiveZChildren && zTranslatedNodes[size - 1].key < 0.0f)) { 678 // no 3d children to draw 679 return; 680 } 681 682 /** 683 * Draw shadows and (potential) casters mostly in order, but allow the shadows of casters 684 * with very similar Z heights to draw together. 685 * 686 * This way, if Views A & B have the same Z height and are both casting shadows, the shadows are 687 * underneath both, and neither's shadow is drawn on top of the other. 688 */ 689 const size_t nonNegativeIndex = findNonNegativeIndex(zTranslatedNodes); 690 size_t drawIndex, shadowIndex, endIndex; 691 if (mode == kNegativeZChildren) { 692 drawIndex = 0; 693 endIndex = nonNegativeIndex; 694 shadowIndex = endIndex; // draw no shadows 695 } else { 696 drawIndex = nonNegativeIndex; 697 endIndex = size; 698 shadowIndex = drawIndex; // potentially draw shadow for each pos Z child 699 } 700 701 DISPLAY_LIST_LOGD("%*s%d %s 3d children:", (handler.level() + 1) * 2, "", 702 endIndex - drawIndex, mode == kNegativeZChildren ? "negative" : "positive"); 703 704 float lastCasterZ = 0.0f; 705 while (shadowIndex < endIndex || drawIndex < endIndex) { 706 if (shadowIndex < endIndex) { 707 DrawRenderNodeOp* casterOp = zTranslatedNodes[shadowIndex].value; 708 RenderNode* caster = casterOp->mRenderNode; 709 const float casterZ = zTranslatedNodes[shadowIndex].key; 710 // attempt to render the shadow if the caster about to be drawn is its caster, 711 // OR if its caster's Z value is similar to the previous potential caster 712 if (shadowIndex == drawIndex || casterZ - lastCasterZ < SHADOW_DELTA) { 713 caster->issueDrawShadowOperation(casterOp->mTransformFromParent, handler); 714 715 lastCasterZ = casterZ; // must do this even if current caster not casting a shadow 716 shadowIndex++; 717 continue; 718 } 719 } 720 721 // only the actual child DL draw needs to be in save/restore, 722 // since it modifies the renderer's matrix 723 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 724 725 DrawRenderNodeOp* childOp = zTranslatedNodes[drawIndex].value; 726 RenderNode* child = childOp->mRenderNode; 727 728 renderer.concatMatrix(childOp->mTransformFromParent); 729 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 730 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 731 childOp->mSkipInOrderDraw = true; 732 733 renderer.restoreToCount(restoreTo); 734 drawIndex++; 735 } 736} 737 738template <class T> 739void RenderNode::issueOperationsOfProjectedChildren(OpenGLRenderer& renderer, T& handler) { 740 DISPLAY_LIST_LOGD("%*s%d projected children:", (handler.level() + 1) * 2, "", mProjectedNodes.size()); 741 const SkPath* projectionReceiverOutline = properties().getOutline().getPath(); 742 int restoreTo = renderer.getSaveCount(); 743 744 // If the projection reciever has an outline, we mask each of the projected rendernodes to it 745 // Either with clipRect, or special saveLayer masking 746 LinearAllocator& alloc = handler.allocator(); 747 if (projectionReceiverOutline != NULL) { 748 const SkRect& outlineBounds = projectionReceiverOutline->getBounds(); 749 if (projectionReceiverOutline->isRect(NULL)) { 750 // mask to the rect outline simply with clipRect 751 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 752 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 753 ClipRectOp* clipOp = new (alloc) ClipRectOp( 754 outlineBounds.left(), outlineBounds.top(), 755 outlineBounds.right(), outlineBounds.bottom(), SkRegion::kIntersect_Op); 756 handler(clipOp, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 757 } else { 758 // wrap the projected RenderNodes with a SaveLayer that will mask to the outline 759 SaveLayerOp* op = new (alloc) SaveLayerOp( 760 outlineBounds.left(), outlineBounds.top(), 761 outlineBounds.right(), outlineBounds.bottom(), 762 255, SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag | SkCanvas::kARGB_ClipLayer_SaveFlag); 763 op->setMask(projectionReceiverOutline); 764 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 765 766 /* TODO: add optimizations here to take advantage of placement/size of projected 767 * children (which may shrink saveLayer area significantly). This is dependent on 768 * passing actual drawing/dirtying bounds of projected content down to native. 769 */ 770 } 771 } 772 773 // draw projected nodes 774 for (size_t i = 0; i < mProjectedNodes.size(); i++) { 775 DrawRenderNodeOp* childOp = mProjectedNodes[i]; 776 777 // matrix save, concat, and restore can be done safely without allocating operations 778 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 779 renderer.concatMatrix(childOp->mTransformFromCompositingAncestor); 780 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 781 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 782 childOp->mSkipInOrderDraw = true; 783 renderer.restoreToCount(restoreTo); 784 } 785 786 if (projectionReceiverOutline != NULL) { 787 handler(new (alloc) RestoreToCountOp(restoreTo), 788 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 789 } 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 const int level = handler.level(); 804 if (mDisplayListData->isEmpty()) { 805 DISPLAY_LIST_LOGD("%*sEmpty display list (%p, %s)", level * 2, "", this, getName()); 806 return; 807 } 808 809 const bool drawLayer = (mLayer && (&renderer != mLayer->renderer)); 810 // If we are updating the contents of mLayer, we don't want to apply any of 811 // the RenderNode's properties to this issueOperations pass. Those will all 812 // be applied when the layer is drawn, aka when this is true. 813 const bool useViewProperties = (!mLayer || drawLayer); 814 if (useViewProperties) { 815 const Outline& outline = properties().getOutline(); 816 if (properties().getAlpha() <= 0 || (outline.getShouldClip() && outline.isEmpty())) { 817 DISPLAY_LIST_LOGD("%*sRejected display list (%p, %s)", level * 2, "", this, getName()); 818 return; 819 } 820 } 821 822 handler.startMark(getName()); 823 824#if DEBUG_DISPLAY_LIST 825 const Rect& clipRect = renderer.getLocalClipBounds(); 826 DISPLAY_LIST_LOGD("%*sStart display list (%p, %s), localClipBounds: %.0f, %.0f, %.0f, %.0f", 827 level * 2, "", this, getName(), 828 clipRect.left, clipRect.top, clipRect.right, clipRect.bottom); 829#endif 830 831 LinearAllocator& alloc = handler.allocator(); 832 int restoreTo = renderer.getSaveCount(); 833 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 834 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 835 836 DISPLAY_LIST_LOGD("%*sSave %d %d", (level + 1) * 2, "", 837 SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag, restoreTo); 838 839 if (useViewProperties) { 840 setViewProperties<T>(renderer, handler); 841 } 842 843 bool quickRejected = properties().getClipToBounds() 844 && renderer.quickRejectConservative(0, 0, properties().getWidth(), properties().getHeight()); 845 if (!quickRejected) { 846 if (drawLayer) { 847 handler(new (alloc) DrawLayerOp(mLayer, 0, 0), 848 renderer.getSaveCount() - 1, properties().getClipToBounds()); 849 } else { 850 Vector<ZDrawRenderNodeOpPair> zTranslatedNodes; 851 buildZSortedChildList(zTranslatedNodes); 852 853 // for 3d root, draw children with negative z values 854 int shadowRestoreTo = issueOperationsOfNegZChildren(zTranslatedNodes, renderer, handler); 855 856 DisplayListLogBuffer& logBuffer = DisplayListLogBuffer::getInstance(); 857 const int saveCountOffset = renderer.getSaveCount() - 1; 858 const int projectionReceiveIndex = mDisplayListData->projectionReceiveIndex; 859 const int size = static_cast<int>(mDisplayListData->displayListOps.size()); 860 for (int i = 0; i < size; i++) { 861 DisplayListOp *op = mDisplayListData->displayListOps[i]; 862 863#if DEBUG_DISPLAY_LIST 864 op->output(level + 1); 865#endif 866 logBuffer.writeCommand(level, op->name()); 867 handler(op, saveCountOffset, properties().getClipToBounds()); 868 869 if (CC_UNLIKELY(i == projectionReceiveIndex && mProjectedNodes.size() > 0)) { 870 issueOperationsOfProjectedChildren(renderer, handler); 871 } 872 } 873 874 // for 3d root, draw children with positive z values 875 issueOperationsOfPosZChildren(shadowRestoreTo, zTranslatedNodes, renderer, handler); 876 } 877 } 878 879 DISPLAY_LIST_LOGD("%*sRestoreToCount %d", (level + 1) * 2, "", restoreTo); 880 handler(new (alloc) RestoreToCountOp(restoreTo), 881 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 882 renderer.setOverrideLayerAlpha(1.0f); 883 884 DISPLAY_LIST_LOGD("%*sDone (%p, %s)", level * 2, "", this, getName()); 885 handler.endMark(); 886} 887 888} /* namespace uirenderer */ 889} /* namespace android */ 890