RenderNode.cpp revision ec0c92548071801c81e02ca72b9864739e1c080c
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} 68 69RenderNode::~RenderNode() { 70 delete mDisplayListData; 71 delete mStagingDisplayListData; 72 LayerRenderer::destroyLayerDeferred(mLayer); 73} 74 75void RenderNode::setStagingDisplayList(DisplayListData* data) { 76 mNeedsDisplayListDataSync = true; 77 delete mStagingDisplayListData; 78 mStagingDisplayListData = data; 79 if (mStagingDisplayListData) { 80 Caches::getInstance().registerFunctors(mStagingDisplayListData->functorCount); 81 } 82} 83 84/** 85 * This function is a simplified version of replay(), where we simply retrieve and log the 86 * display list. This function should remain in sync with the replay() function. 87 */ 88void RenderNode::output(uint32_t level) { 89 ALOGD("%*sStart display list (%p, %s, render=%d)", (level - 1) * 2, "", this, 90 getName(), isRenderable()); 91 ALOGD("%*s%s %d", level * 2, "", "Save", 92 SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag); 93 94 properties().debugOutputProperties(level); 95 int flags = DisplayListOp::kOpLogFlag_Recurse; 96 for (unsigned int i = 0; i < mDisplayListData->displayListOps.size(); i++) { 97 mDisplayListData->displayListOps[i]->output(level, flags); 98 } 99 100 ALOGD("%*sDone (%p, %s)", (level - 1) * 2, "", this, getName()); 101} 102 103int RenderNode::getDebugSize() { 104 int size = sizeof(RenderNode); 105 if (mStagingDisplayListData) { 106 size += mStagingDisplayListData->allocator.usedSize(); 107 } 108 if (mDisplayListData && mDisplayListData != mStagingDisplayListData) { 109 size += mDisplayListData->allocator.usedSize(); 110 } 111 return size; 112} 113 114void RenderNode::prepareTree(TreeInfo& info) { 115 ATRACE_CALL(); 116 117 prepareTreeImpl(info); 118} 119 120void RenderNode::addAnimator(const sp<BaseRenderNodeAnimator>& animator) { 121 mAnimatorManager.addAnimator(animator); 122} 123 124void RenderNode::damageSelf(TreeInfo& info) { 125 if (isRenderable()) { 126 if (properties().getClipDamageToBounds()) { 127 info.damageAccumulator->dirty(0, 0, properties().getWidth(), properties().getHeight()); 128 } else { 129 // Hope this is big enough? 130 // TODO: Get this from the display list ops or something 131 info.damageAccumulator->dirty(INT_MIN, INT_MIN, INT_MAX, INT_MAX); 132 } 133 } 134} 135 136void RenderNode::prepareLayer(TreeInfo& info) { 137 LayerType layerType = properties().layerProperties().type(); 138 if (CC_UNLIKELY(layerType == kLayerTypeRenderLayer)) { 139 // We push a null transform here as we don't care what the existing dirty 140 // area is, only what our display list dirty is as well as our children's 141 // dirty area 142 info.damageAccumulator->pushNullTransform(); 143 } 144} 145 146void RenderNode::pushLayerUpdate(TreeInfo& info) { 147 LayerType layerType = properties().layerProperties().type(); 148 // If we are not a layer OR we cannot be rendered (eg, view was detached) 149 // we need to destroy any Layers we may have had previously 150 if (CC_LIKELY(layerType != kLayerTypeRenderLayer) || CC_UNLIKELY(!isRenderable())) { 151 if (layerType == kLayerTypeRenderLayer) { 152 info.damageAccumulator->popTransform(); 153 } 154 if (CC_UNLIKELY(mLayer)) { 155 LayerRenderer::destroyLayer(mLayer); 156 mLayer = NULL; 157 } 158 return; 159 } 160 161 if (!mLayer) { 162 mLayer = LayerRenderer::createRenderLayer(info.renderState, getWidth(), getHeight()); 163 applyLayerPropertiesToLayer(info); 164 damageSelf(info); 165 } else if (mLayer->layer.getWidth() != getWidth() || mLayer->layer.getHeight() != getHeight()) { 166 if (!LayerRenderer::resizeLayer(mLayer, getWidth(), getHeight())) { 167 LayerRenderer::destroyLayer(mLayer); 168 mLayer = 0; 169 } 170 damageSelf(info); 171 } 172 173 SkRect dirty; 174 info.damageAccumulator->peekAtDirty(&dirty); 175 info.damageAccumulator->popTransform(); 176 177 if (!mLayer) { 178 if (info.errorHandler) { 179 std::string msg = "Unable to create layer for "; 180 msg += getName(); 181 info.errorHandler->onError(msg); 182 } 183 return; 184 } 185 186 if (!dirty.isEmpty()) { 187 mLayer->updateDeferred(this, dirty.fLeft, dirty.fTop, dirty.fRight, dirty.fBottom); 188 } 189 // This is not inside the above if because we may have called 190 // updateDeferred on a previous prepare pass that didn't have a renderer 191 if (info.renderer && mLayer->deferredUpdateScheduled) { 192 info.renderer->pushLayerUpdate(mLayer); 193 } 194} 195 196void RenderNode::prepareTreeImpl(TreeInfo& info) { 197 info.damageAccumulator->pushTransform(this); 198 199 switch (info.mode) { 200 case TreeInfo::MODE_FULL: 201 pushStagingPropertiesChanges(info); 202 mAnimatorManager.animate(info); 203 break; 204 case TreeInfo::MODE_MAYBE_DETACHING: 205 pushStagingPropertiesChanges(info); 206 break; 207 case TreeInfo::MODE_RT_ONLY: 208 mAnimatorManager.animate(info); 209 break; 210 case TreeInfo::MODE_DESTROY_RESOURCES: 211 // This will also release the hardware layer if we have one as 212 // isRenderable() will return false, thus causing pushLayerUpdate 213 // to recycle the hardware layer 214 LOG_ALWAYS_FATAL_IF(mStagingDisplayListData || (mDisplayListData && !mNeedsDisplayListDataSync), 215 "View.destroyHardwareResources wasn't called!"); 216 break; 217 } 218 219 prepareLayer(info); 220 if (info.mode == TreeInfo::MODE_FULL || info.mode == TreeInfo::MODE_DESTROY_RESOURCES) { 221 pushStagingDisplayListChanges(info); 222 } 223 prepareSubTree(info, mDisplayListData); 224 pushLayerUpdate(info); 225 226 info.damageAccumulator->popTransform(); 227} 228 229void RenderNode::pushStagingPropertiesChanges(TreeInfo& info) { 230 // Push the animators first so that setupStartValueIfNecessary() is called 231 // before properties() is trampled by stagingProperties(), as they are 232 // required by some animators. 233 mAnimatorManager.pushStaging(info); 234 if (mDirtyPropertyFields) { 235 mDirtyPropertyFields = 0; 236 damageSelf(info); 237 info.damageAccumulator->popTransform(); 238 mProperties = mStagingProperties; 239 applyLayerPropertiesToLayer(info); 240 // We could try to be clever and only re-damage if the matrix changed. 241 // However, we don't need to worry about that. The cost of over-damaging 242 // here is only going to be a single additional map rect of this node 243 // plus a rect join(). The parent's transform (and up) will only be 244 // performed once. 245 info.damageAccumulator->pushTransform(this); 246 damageSelf(info); 247 } 248} 249 250void RenderNode::applyLayerPropertiesToLayer(TreeInfo& info) { 251 if (CC_LIKELY(!mLayer)) return; 252 253 const LayerProperties& props = properties().layerProperties(); 254 mLayer->setAlpha(props.alpha(), props.xferMode()); 255 mLayer->setColorFilter(props.colorFilter()); 256 mLayer->setBlend(props.needsBlending()); 257} 258 259void RenderNode::pushStagingDisplayListChanges(TreeInfo& info) { 260 if (mNeedsDisplayListDataSync) { 261 mNeedsDisplayListDataSync = false; 262 // Do a push pass on the old tree to handle freeing DisplayListData 263 // that are no longer used 264 TreeInfo::TraversalMode mode = TreeInfo::MODE_MAYBE_DETACHING; 265 if (CC_UNLIKELY(info.mode == TreeInfo::MODE_DESTROY_RESOURCES)) { 266 mode = TreeInfo::MODE_DESTROY_RESOURCES; 267 } 268 TreeInfo oldTreeInfo(mode, info); 269 prepareSubTree(oldTreeInfo, mDisplayListData); 270 delete mDisplayListData; 271 mDisplayListData = mStagingDisplayListData; 272 mStagingDisplayListData = 0; 273 damageSelf(info); 274 } 275} 276 277void RenderNode::prepareSubTree(TreeInfo& info, DisplayListData* subtree) { 278 if (subtree) { 279 TextureCache& cache = Caches::getInstance().textureCache; 280 info.out.hasFunctors |= subtree->functorCount; 281 // TODO: Fix ownedBitmapResources to not require disabling prepareTextures 282 // and thus falling out of async drawing path. 283 if (subtree->ownedBitmapResources.size()) { 284 info.prepareTextures = false; 285 } 286 for (size_t i = 0; info.prepareTextures && i < subtree->bitmapResources.size(); i++) { 287 info.prepareTextures = cache.prefetchAndMarkInUse(subtree->bitmapResources[i]); 288 } 289 for (size_t i = 0; i < subtree->children().size(); i++) { 290 DrawRenderNodeOp* op = subtree->children()[i]; 291 RenderNode* childNode = op->mRenderNode; 292 info.damageAccumulator->pushTransform(&op->mTransformFromParent); 293 childNode->prepareTreeImpl(info); 294 info.damageAccumulator->popTransform(); 295 } 296 } 297} 298 299/* 300 * For property operations, we pass a savecount of 0, since the operations aren't part of the 301 * displaylist, and thus don't have to compensate for the record-time/playback-time discrepancy in 302 * base saveCount (i.e., how RestoreToCount uses saveCount + properties().getCount()) 303 */ 304#define PROPERTY_SAVECOUNT 0 305 306template <class T> 307void RenderNode::setViewProperties(OpenGLRenderer& renderer, T& handler) { 308#if DEBUG_DISPLAY_LIST 309 properties().debugOutputProperties(handler.level() + 1); 310#endif 311 if (properties().getLeft() != 0 || properties().getTop() != 0) { 312 renderer.translate(properties().getLeft(), properties().getTop()); 313 } 314 if (properties().getStaticMatrix()) { 315 renderer.concatMatrix(*properties().getStaticMatrix()); 316 } else if (properties().getAnimationMatrix()) { 317 renderer.concatMatrix(*properties().getAnimationMatrix()); 318 } 319 if (properties().hasTransformMatrix()) { 320 if (properties().isTransformTranslateOnly()) { 321 renderer.translate(properties().getTranslationX(), properties().getTranslationY()); 322 } else { 323 renderer.concatMatrix(*properties().getTransformMatrix()); 324 } 325 } 326 const bool isLayer = properties().layerProperties().type() != kLayerTypeNone; 327 bool clipToBoundsNeeded = isLayer ? false : properties().getClipToBounds(); 328 if (properties().getAlpha() < 1) { 329 if (isLayer) { 330 renderer.setOverrideLayerAlpha(properties().getAlpha()); 331 } else if (!properties().getHasOverlappingRendering()) { 332 renderer.scaleAlpha(properties().getAlpha()); 333 } else { 334 // TODO: should be able to store the size of a DL at record time and not 335 // have to pass it into this call. In fact, this information might be in the 336 // location/size info that we store with the new native transform data. 337 int saveFlags = SkCanvas::kHasAlphaLayer_SaveFlag; 338 if (clipToBoundsNeeded) { 339 saveFlags |= SkCanvas::kClipToLayer_SaveFlag; 340 clipToBoundsNeeded = false; // clipping done by saveLayer 341 } 342 343 SaveLayerOp* op = new (handler.allocator()) SaveLayerOp( 344 0, 0, properties().getWidth(), properties().getHeight(), 345 properties().getAlpha() * 255, saveFlags); 346 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 347 } 348 } 349 if (clipToBoundsNeeded) { 350 ClipRectOp* op = new (handler.allocator()) ClipRectOp( 351 0, 0, properties().getWidth(), properties().getHeight(), SkRegion::kIntersect_Op); 352 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 353 } 354 355 if (CC_UNLIKELY(properties().hasClippingPath())) { 356 ClipPathOp* op = new (handler.allocator()) ClipPathOp( 357 properties().getClippingPath(), properties().getClippingPathOp()); 358 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 359 } 360} 361 362/** 363 * Apply property-based transformations to input matrix 364 * 365 * If true3dTransform is set to true, the transform applied to the input matrix will use true 4x4 366 * matrix computation instead of the Skia 3x3 matrix + camera hackery. 367 */ 368void RenderNode::applyViewPropertyTransforms(mat4& matrix, bool true3dTransform) { 369 if (properties().getLeft() != 0 || properties().getTop() != 0) { 370 matrix.translate(properties().getLeft(), properties().getTop()); 371 } 372 if (properties().getStaticMatrix()) { 373 mat4 stat(*properties().getStaticMatrix()); 374 matrix.multiply(stat); 375 } else if (properties().getAnimationMatrix()) { 376 mat4 anim(*properties().getAnimationMatrix()); 377 matrix.multiply(anim); 378 } 379 380 bool applyTranslationZ = true3dTransform && !MathUtils::isZero(properties().getZ()); 381 if (properties().hasTransformMatrix() || applyTranslationZ) { 382 if (properties().isTransformTranslateOnly()) { 383 matrix.translate(properties().getTranslationX(), properties().getTranslationY(), 384 true3dTransform ? properties().getZ() : 0.0f); 385 } else { 386 if (!true3dTransform) { 387 matrix.multiply(*properties().getTransformMatrix()); 388 } else { 389 mat4 true3dMat; 390 true3dMat.loadTranslate( 391 properties().getPivotX() + properties().getTranslationX(), 392 properties().getPivotY() + properties().getTranslationY(), 393 properties().getZ()); 394 true3dMat.rotate(properties().getRotationX(), 1, 0, 0); 395 true3dMat.rotate(properties().getRotationY(), 0, 1, 0); 396 true3dMat.rotate(properties().getRotation(), 0, 0, 1); 397 true3dMat.scale(properties().getScaleX(), properties().getScaleY(), 1); 398 true3dMat.translate(-properties().getPivotX(), -properties().getPivotY()); 399 400 matrix.multiply(true3dMat); 401 } 402 } 403 } 404} 405 406/** 407 * Organizes the DisplayList hierarchy to prepare for background projection reordering. 408 * 409 * This should be called before a call to defer() or drawDisplayList() 410 * 411 * Each DisplayList that serves as a 3d root builds its list of composited children, 412 * which are flagged to not draw in the standard draw loop. 413 */ 414void RenderNode::computeOrdering() { 415 ATRACE_CALL(); 416 mProjectedNodes.clear(); 417 418 // TODO: create temporary DDLOp and call computeOrderingImpl on top DisplayList so that 419 // transform properties are applied correctly to top level children 420 if (mDisplayListData == NULL) return; 421 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 422 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 423 childOp->mRenderNode->computeOrderingImpl(childOp, 424 properties().getOutline().getPath(), &mProjectedNodes, &mat4::identity()); 425 } 426} 427 428void RenderNode::computeOrderingImpl( 429 DrawRenderNodeOp* opState, 430 const SkPath* outlineOfProjectionSurface, 431 Vector<DrawRenderNodeOp*>* compositedChildrenOfProjectionSurface, 432 const mat4* transformFromProjectionSurface) { 433 mProjectedNodes.clear(); 434 if (mDisplayListData == NULL || mDisplayListData->isEmpty()) return; 435 436 // TODO: should avoid this calculation in most cases 437 // TODO: just calculate single matrix, down to all leaf composited elements 438 Matrix4 localTransformFromProjectionSurface(*transformFromProjectionSurface); 439 localTransformFromProjectionSurface.multiply(opState->mTransformFromParent); 440 441 if (properties().getProjectBackwards()) { 442 // composited projectee, flag for out of order draw, save matrix, and store in proj surface 443 opState->mSkipInOrderDraw = true; 444 opState->mTransformFromCompositingAncestor.load(localTransformFromProjectionSurface); 445 compositedChildrenOfProjectionSurface->add(opState); 446 } else { 447 // standard in order draw 448 opState->mSkipInOrderDraw = false; 449 } 450 451 if (mDisplayListData->children().size() > 0) { 452 const bool isProjectionReceiver = mDisplayListData->projectionReceiveIndex >= 0; 453 bool haveAppliedPropertiesToProjection = false; 454 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 455 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 456 RenderNode* child = childOp->mRenderNode; 457 458 const SkPath* projectionOutline = NULL; 459 Vector<DrawRenderNodeOp*>* projectionChildren = NULL; 460 const mat4* projectionTransform = NULL; 461 if (isProjectionReceiver && !child->properties().getProjectBackwards()) { 462 // if receiving projections, collect projecting descendent 463 464 // Note that if a direct descendent is projecting backwards, we pass it's 465 // grandparent projection collection, since it shouldn't project onto it's 466 // parent, where it will already be drawing. 467 projectionOutline = properties().getOutline().getPath(); 468 projectionChildren = &mProjectedNodes; 469 projectionTransform = &mat4::identity(); 470 } else { 471 if (!haveAppliedPropertiesToProjection) { 472 applyViewPropertyTransforms(localTransformFromProjectionSurface); 473 haveAppliedPropertiesToProjection = true; 474 } 475 projectionOutline = outlineOfProjectionSurface; 476 projectionChildren = compositedChildrenOfProjectionSurface; 477 projectionTransform = &localTransformFromProjectionSurface; 478 } 479 child->computeOrderingImpl(childOp, 480 projectionOutline, projectionChildren, projectionTransform); 481 } 482 } 483} 484 485class DeferOperationHandler { 486public: 487 DeferOperationHandler(DeferStateStruct& deferStruct, int level) 488 : mDeferStruct(deferStruct), mLevel(level) {} 489 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 490 operation->defer(mDeferStruct, saveCount, mLevel, clipToBounds); 491 } 492 inline LinearAllocator& allocator() { return *(mDeferStruct.mAllocator); } 493 inline void startMark(const char* name) {} // do nothing 494 inline void endMark() {} 495 inline int level() { return mLevel; } 496 inline int replayFlags() { return mDeferStruct.mReplayFlags; } 497 498private: 499 DeferStateStruct& mDeferStruct; 500 const int mLevel; 501}; 502 503void RenderNode::defer(DeferStateStruct& deferStruct, const int level) { 504 DeferOperationHandler handler(deferStruct, level); 505 issueOperations<DeferOperationHandler>(deferStruct.mRenderer, handler); 506} 507 508class ReplayOperationHandler { 509public: 510 ReplayOperationHandler(ReplayStateStruct& replayStruct, int level) 511 : mReplayStruct(replayStruct), mLevel(level) {} 512 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 513#if DEBUG_DISPLAY_LIST_OPS_AS_EVENTS 514 mReplayStruct.mRenderer.eventMark(operation->name()); 515#endif 516 operation->replay(mReplayStruct, saveCount, mLevel, clipToBounds); 517 } 518 inline LinearAllocator& allocator() { return *(mReplayStruct.mAllocator); } 519 inline void startMark(const char* name) { 520 mReplayStruct.mRenderer.startMark(name); 521 } 522 inline void endMark() { 523 mReplayStruct.mRenderer.endMark(); 524 } 525 inline int level() { return mLevel; } 526 inline int replayFlags() { return mReplayStruct.mReplayFlags; } 527 528private: 529 ReplayStateStruct& mReplayStruct; 530 const int mLevel; 531}; 532 533void RenderNode::replay(ReplayStateStruct& replayStruct, const int level) { 534 ReplayOperationHandler handler(replayStruct, level); 535 issueOperations<ReplayOperationHandler>(replayStruct.mRenderer, handler); 536} 537 538void RenderNode::buildZSortedChildList(Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes) { 539 if (mDisplayListData == NULL || mDisplayListData->children().size() == 0) return; 540 541 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 542 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 543 RenderNode* child = childOp->mRenderNode; 544 float childZ = child->properties().getZ(); 545 546 if (!MathUtils::isZero(childZ)) { 547 zTranslatedNodes.add(ZDrawRenderNodeOpPair(childZ, childOp)); 548 childOp->mSkipInOrderDraw = true; 549 } else if (!child->properties().getProjectBackwards()) { 550 // regular, in order drawing DisplayList 551 childOp->mSkipInOrderDraw = false; 552 } 553 } 554 555 // Z sort 3d children (stable-ness makes z compare fall back to standard drawing order) 556 std::stable_sort(zTranslatedNodes.begin(), zTranslatedNodes.end()); 557} 558 559template <class T> 560void RenderNode::issueDrawShadowOperation(const Matrix4& transformFromParent, T& handler) { 561 if (properties().getAlpha() <= 0.0f || properties().getOutline().isEmpty()) return; 562 563 mat4 shadowMatrixXY(transformFromParent); 564 applyViewPropertyTransforms(shadowMatrixXY); 565 566 // Z matrix needs actual 3d transformation, so mapped z values will be correct 567 mat4 shadowMatrixZ(transformFromParent); 568 applyViewPropertyTransforms(shadowMatrixZ, true); 569 570 const SkPath* outlinePath = properties().getOutline().getPath(); 571 const RevealClip& revealClip = properties().getRevealClip(); 572 const SkPath* revealClipPath = revealClip.hasConvexClip() 573 ? revealClip.getPath() : NULL; // only pass the reveal clip's path if it's convex 574 575 if (revealClipPath && revealClipPath->isEmpty()) return; 576 577 /** 578 * The drawing area of the caster is always the same as the its perimeter (which 579 * the shadow system uses) *except* in the inverse clip case. Inform the shadow 580 * system that the caster's drawing area (as opposed to its perimeter) has been 581 * clipped, so that it knows the caster can't be opaque. 582 */ 583 bool casterUnclipped = !revealClip.willClip() || revealClip.hasConvexClip(); 584 585 DisplayListOp* shadowOp = new (handler.allocator()) DrawShadowOp( 586 shadowMatrixXY, shadowMatrixZ, 587 properties().getAlpha(), casterUnclipped, 588 outlinePath, revealClipPath); 589 handler(shadowOp, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 590} 591 592template <class T> 593int RenderNode::issueOperationsOfNegZChildren( 594 const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 595 OpenGLRenderer& renderer, T& handler) { 596 if (zTranslatedNodes.isEmpty()) return -1; 597 598 // create a save around the body of the ViewGroup's draw method, so that 599 // matrix/clip methods don't affect composited children 600 int shadowSaveCount = renderer.getSaveCount(); 601 handler(new (handler.allocator()) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 602 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 603 604 issueOperationsOf3dChildren(zTranslatedNodes, kNegativeZChildren, renderer, handler); 605 return shadowSaveCount; 606} 607 608template <class T> 609void RenderNode::issueOperationsOfPosZChildren(int shadowRestoreTo, 610 const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 611 OpenGLRenderer& renderer, T& handler) { 612 if (zTranslatedNodes.isEmpty()) return; 613 614 LOG_ALWAYS_FATAL_IF(shadowRestoreTo < 0, "invalid save to restore to"); 615 handler(new (handler.allocator()) RestoreToCountOp(shadowRestoreTo), 616 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 617 renderer.setOverrideLayerAlpha(1.0f); 618 619 issueOperationsOf3dChildren(zTranslatedNodes, kPositiveZChildren, renderer, handler); 620} 621 622#define SHADOW_DELTA 0.1f 623 624template <class T> 625void RenderNode::issueOperationsOf3dChildren(const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 626 ChildrenSelectMode mode, OpenGLRenderer& renderer, T& handler) { 627 const int size = zTranslatedNodes.size(); 628 if (size == 0 629 || (mode == kNegativeZChildren && zTranslatedNodes[0].key > 0.0f) 630 || (mode == kPositiveZChildren && zTranslatedNodes[size - 1].key < 0.0f)) { 631 // no 3d children to draw 632 return; 633 } 634 635 /** 636 * Draw shadows and (potential) casters mostly in order, but allow the shadows of casters 637 * with very similar Z heights to draw together. 638 * 639 * This way, if Views A & B have the same Z height and are both casting shadows, the shadows are 640 * underneath both, and neither's shadow is drawn on top of the other. 641 */ 642 const size_t nonNegativeIndex = findNonNegativeIndex(zTranslatedNodes); 643 size_t drawIndex, shadowIndex, endIndex; 644 if (mode == kNegativeZChildren) { 645 drawIndex = 0; 646 endIndex = nonNegativeIndex; 647 shadowIndex = endIndex; // draw no shadows 648 } else { 649 drawIndex = nonNegativeIndex; 650 endIndex = size; 651 shadowIndex = drawIndex; // potentially draw shadow for each pos Z child 652 } 653 654 DISPLAY_LIST_LOGD("%*s%d %s 3d children:", (handler.level() + 1) * 2, "", 655 endIndex - drawIndex, mode == kNegativeZChildren ? "negative" : "positive"); 656 657 float lastCasterZ = 0.0f; 658 while (shadowIndex < endIndex || drawIndex < endIndex) { 659 if (shadowIndex < endIndex) { 660 DrawRenderNodeOp* casterOp = zTranslatedNodes[shadowIndex].value; 661 RenderNode* caster = casterOp->mRenderNode; 662 const float casterZ = zTranslatedNodes[shadowIndex].key; 663 // attempt to render the shadow if the caster about to be drawn is its caster, 664 // OR if its caster's Z value is similar to the previous potential caster 665 if (shadowIndex == drawIndex || casterZ - lastCasterZ < SHADOW_DELTA) { 666 caster->issueDrawShadowOperation(casterOp->mTransformFromParent, handler); 667 668 lastCasterZ = casterZ; // must do this even if current caster not casting a shadow 669 shadowIndex++; 670 continue; 671 } 672 } 673 674 // only the actual child DL draw needs to be in save/restore, 675 // since it modifies the renderer's matrix 676 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 677 678 DrawRenderNodeOp* childOp = zTranslatedNodes[drawIndex].value; 679 RenderNode* child = childOp->mRenderNode; 680 681 renderer.concatMatrix(childOp->mTransformFromParent); 682 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 683 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 684 childOp->mSkipInOrderDraw = true; 685 686 renderer.restoreToCount(restoreTo); 687 drawIndex++; 688 } 689} 690 691template <class T> 692void RenderNode::issueOperationsOfProjectedChildren(OpenGLRenderer& renderer, T& handler) { 693 DISPLAY_LIST_LOGD("%*s%d projected children:", (handler.level() + 1) * 2, "", mProjectedNodes.size()); 694 const SkPath* projectionReceiverOutline = properties().getOutline().getPath(); 695 int restoreTo = renderer.getSaveCount(); 696 697 // If the projection reciever has an outline, we mask each of the projected rendernodes to it 698 // Either with clipRect, or special saveLayer masking 699 LinearAllocator& alloc = handler.allocator(); 700 if (projectionReceiverOutline != NULL) { 701 const SkRect& outlineBounds = projectionReceiverOutline->getBounds(); 702 if (projectionReceiverOutline->isRect(NULL)) { 703 // mask to the rect outline simply with clipRect 704 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 705 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 706 ClipRectOp* clipOp = new (alloc) ClipRectOp( 707 outlineBounds.left(), outlineBounds.top(), 708 outlineBounds.right(), outlineBounds.bottom(), SkRegion::kIntersect_Op); 709 handler(clipOp, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 710 } else { 711 // wrap the projected RenderNodes with a SaveLayer that will mask to the outline 712 SaveLayerOp* op = new (alloc) SaveLayerOp( 713 outlineBounds.left(), outlineBounds.top(), 714 outlineBounds.right(), outlineBounds.bottom(), 715 255, SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag | SkCanvas::kARGB_ClipLayer_SaveFlag); 716 op->setMask(projectionReceiverOutline); 717 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 718 719 /* TODO: add optimizations here to take advantage of placement/size of projected 720 * children (which may shrink saveLayer area significantly). This is dependent on 721 * passing actual drawing/dirtying bounds of projected content down to native. 722 */ 723 } 724 } 725 726 // draw projected nodes 727 for (size_t i = 0; i < mProjectedNodes.size(); i++) { 728 DrawRenderNodeOp* childOp = mProjectedNodes[i]; 729 730 // matrix save, concat, and restore can be done safely without allocating operations 731 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 732 renderer.concatMatrix(childOp->mTransformFromCompositingAncestor); 733 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 734 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 735 childOp->mSkipInOrderDraw = true; 736 renderer.restoreToCount(restoreTo); 737 } 738 739 if (projectionReceiverOutline != NULL) { 740 handler(new (alloc) RestoreToCountOp(restoreTo), 741 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 742 } 743} 744 745/** 746 * This function serves both defer and replay modes, and will organize the displayList's component 747 * operations for a single frame: 748 * 749 * Every 'simple' state operation that affects just the matrix and alpha (or other factors of 750 * DeferredDisplayState) may be issued directly to the renderer, but complex operations (with custom 751 * defer logic) and operations in displayListOps are issued through the 'handler' which handles the 752 * defer vs replay logic, per operation 753 */ 754template <class T> 755void RenderNode::issueOperations(OpenGLRenderer& renderer, T& handler) { 756 const bool drawLayer = (mLayer && (&renderer != mLayer->renderer)); 757 // If we are updating the contents of mLayer, we don't want to apply any of 758 // the RenderNode's properties to this issueOperations pass. Those will all 759 // be applied when the layer is drawn, aka when this is true. 760 const bool useViewProperties = (!mLayer || drawLayer); 761 762 const int level = handler.level(); 763 if (mDisplayListData->isEmpty() || (useViewProperties && properties().getAlpha() <= 0)) { 764 DISPLAY_LIST_LOGD("%*sEmpty display list (%p, %s)", level * 2, "", this, getName()); 765 return; 766 } 767 768 handler.startMark(getName()); 769 770#if DEBUG_DISPLAY_LIST 771 const Rect& clipRect = renderer.getLocalClipBounds(); 772 DISPLAY_LIST_LOGD("%*sStart display list (%p, %s), localClipBounds: %.0f, %.0f, %.0f, %.0f", 773 level * 2, "", this, getName(), 774 clipRect.left, clipRect.top, clipRect.right, clipRect.bottom); 775#endif 776 777 LinearAllocator& alloc = handler.allocator(); 778 int restoreTo = renderer.getSaveCount(); 779 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 780 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 781 782 DISPLAY_LIST_LOGD("%*sSave %d %d", (level + 1) * 2, "", 783 SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag, restoreTo); 784 785 if (useViewProperties) { 786 setViewProperties<T>(renderer, handler); 787 } 788 789 bool quickRejected = properties().getClipToBounds() 790 && renderer.quickRejectConservative(0, 0, properties().getWidth(), properties().getHeight()); 791 if (!quickRejected) { 792 if (mProperties.getOutline().willClip()) { 793 renderer.setClippingOutline(alloc, &(mProperties.getOutline())); 794 } 795 796 if (drawLayer) { 797 handler(new (alloc) DrawLayerOp(mLayer, 0, 0), 798 renderer.getSaveCount() - 1, properties().getClipToBounds()); 799 } else { 800 Vector<ZDrawRenderNodeOpPair> zTranslatedNodes; 801 buildZSortedChildList(zTranslatedNodes); 802 803 // for 3d root, draw children with negative z values 804 int shadowRestoreTo = issueOperationsOfNegZChildren(zTranslatedNodes, renderer, handler); 805 806 DisplayListLogBuffer& logBuffer = DisplayListLogBuffer::getInstance(); 807 const int saveCountOffset = renderer.getSaveCount() - 1; 808 const int projectionReceiveIndex = mDisplayListData->projectionReceiveIndex; 809 for (unsigned int i = 0; i < mDisplayListData->displayListOps.size(); i++) { 810 DisplayListOp *op = mDisplayListData->displayListOps[i]; 811 812#if DEBUG_DISPLAY_LIST 813 op->output(level + 1); 814#endif 815 logBuffer.writeCommand(level, op->name()); 816 handler(op, saveCountOffset, properties().getClipToBounds()); 817 818 if (CC_UNLIKELY(i == projectionReceiveIndex && mProjectedNodes.size() > 0)) { 819 issueOperationsOfProjectedChildren(renderer, handler); 820 } 821 } 822 823 // for 3d root, draw children with positive z values 824 issueOperationsOfPosZChildren(shadowRestoreTo, zTranslatedNodes, renderer, handler); 825 } 826 } 827 828 DISPLAY_LIST_LOGD("%*sRestoreToCount %d", (level + 1) * 2, "", restoreTo); 829 handler(new (alloc) RestoreToCountOp(restoreTo), 830 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 831 renderer.setOverrideLayerAlpha(1.0f); 832 833 DISPLAY_LIST_LOGD("%*sDone (%p, %s)", level * 2, "", this, getName()); 834 handler.endMark(); 835} 836 837} /* namespace uirenderer */ 838} /* namespace android */ 839