RenderNode.cpp revision 590b8d3601a518f6c3e00a28e88add36142bde22
1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define ATRACE_TAG ATRACE_TAG_VIEW 18#define LOG_TAG "OpenGLRenderer" 19 20#include "RenderNode.h" 21 22#include <algorithm> 23#include <string> 24 25#include <SkCanvas.h> 26#include <algorithm> 27 28#include <utils/Trace.h> 29 30#include "DamageAccumulator.h" 31#include "Debug.h" 32#include "DisplayListOp.h" 33#include "DisplayListLogBuffer.h" 34#include "LayerRenderer.h" 35#include "OpenGLRenderer.h" 36#include "utils/MathUtils.h" 37 38namespace android { 39namespace uirenderer { 40 41void RenderNode::outputLogBuffer(int fd) { 42 DisplayListLogBuffer& logBuffer = DisplayListLogBuffer::getInstance(); 43 if (logBuffer.isEmpty()) { 44 return; 45 } 46 47 FILE *file = fdopen(fd, "a"); 48 49 fprintf(file, "\nRecent DisplayList operations\n"); 50 logBuffer.outputCommands(file); 51 52 String8 cachesLog; 53 Caches::getInstance().dumpMemoryUsage(cachesLog); 54 fprintf(file, "\nCaches:\n%s", cachesLog.string()); 55 fprintf(file, "\n"); 56 57 fflush(file); 58} 59 60RenderNode::RenderNode() 61 : mDirtyPropertyFields(0) 62 , mNeedsDisplayListDataSync(false) 63 , mDisplayListData(0) 64 , mStagingDisplayListData(0) 65 , mAnimatorManager(*this) 66 , mLayer(0) 67 , mParentCount(0) { 68} 69 70RenderNode::~RenderNode() { 71 deleteDisplayListData(); 72 delete mStagingDisplayListData; 73 LayerRenderer::destroyLayerDeferred(mLayer); 74} 75 76void RenderNode::setStagingDisplayList(DisplayListData* data) { 77 mNeedsDisplayListDataSync = true; 78 delete mStagingDisplayListData; 79 mStagingDisplayListData = data; 80 if (mStagingDisplayListData) { 81 Caches::getInstance().registerFunctors(mStagingDisplayListData->functors.size()); 82 } 83} 84 85/** 86 * This function is a simplified version of replay(), where we simply retrieve and log the 87 * display list. This function should remain in sync with the replay() function. 88 */ 89void RenderNode::output(uint32_t level) { 90 ALOGD("%*sStart display list (%p, %s, render=%d)", (level - 1) * 2, "", this, 91 getName(), isRenderable()); 92 ALOGD("%*s%s %d", level * 2, "", "Save", 93 SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag); 94 95 properties().debugOutputProperties(level); 96 int flags = DisplayListOp::kOpLogFlag_Recurse; 97 for (unsigned int i = 0; i < mDisplayListData->displayListOps.size(); i++) { 98 mDisplayListData->displayListOps[i]->output(level, flags); 99 } 100 101 ALOGD("%*sDone (%p, %s)", (level - 1) * 2, "", this, getName()); 102} 103 104int RenderNode::getDebugSize() { 105 int size = sizeof(RenderNode); 106 if (mStagingDisplayListData) { 107 size += mStagingDisplayListData->allocator.usedSize(); 108 } 109 if (mDisplayListData && mDisplayListData != mStagingDisplayListData) { 110 size += mDisplayListData->allocator.usedSize(); 111 } 112 return size; 113} 114 115void RenderNode::prepareTree(TreeInfo& info) { 116 ATRACE_CALL(); 117 118 prepareTreeImpl(info); 119} 120 121void RenderNode::addAnimator(const sp<BaseRenderNodeAnimator>& animator) { 122 mAnimatorManager.addAnimator(animator); 123} 124 125void RenderNode::damageSelf(TreeInfo& info) { 126 if (isRenderable()) { 127 if (properties().getClipDamageToBounds()) { 128 info.damageAccumulator->dirty(0, 0, properties().getWidth(), properties().getHeight()); 129 } else { 130 // Hope this is big enough? 131 // TODO: Get this from the display list ops or something 132 info.damageAccumulator->dirty(INT_MIN, INT_MIN, INT_MAX, INT_MAX); 133 } 134 } 135} 136 137void RenderNode::prepareLayer(TreeInfo& info) { 138 LayerType layerType = properties().layerProperties().type(); 139 if (CC_UNLIKELY(layerType == kLayerTypeRenderLayer)) { 140 // We push a null transform here as we don't care what the existing dirty 141 // area is, only what our display list dirty is as well as our children's 142 // dirty area 143 info.damageAccumulator->pushNullTransform(); 144 } 145} 146 147void RenderNode::pushLayerUpdate(TreeInfo& info) { 148 LayerType layerType = properties().layerProperties().type(); 149 // If we are not a layer OR we cannot be rendered (eg, view was detached) 150 // we need to destroy any Layers we may have had previously 151 if (CC_LIKELY(layerType != kLayerTypeRenderLayer) || CC_UNLIKELY(!isRenderable())) { 152 if (layerType == kLayerTypeRenderLayer) { 153 info.damageAccumulator->popTransform(); 154 } 155 if (CC_UNLIKELY(mLayer)) { 156 LayerRenderer::destroyLayer(mLayer); 157 mLayer = NULL; 158 } 159 return; 160 } 161 162 if (!mLayer) { 163 mLayer = LayerRenderer::createRenderLayer(info.renderState, getWidth(), getHeight()); 164 applyLayerPropertiesToLayer(info); 165 damageSelf(info); 166 } else if (mLayer->layer.getWidth() != getWidth() || mLayer->layer.getHeight() != getHeight()) { 167 if (!LayerRenderer::resizeLayer(mLayer, getWidth(), getHeight())) { 168 LayerRenderer::destroyLayer(mLayer); 169 mLayer = 0; 170 } 171 damageSelf(info); 172 } 173 174 SkRect dirty; 175 info.damageAccumulator->peekAtDirty(&dirty); 176 info.damageAccumulator->popTransform(); 177 178 if (!mLayer) { 179 if (info.errorHandler) { 180 std::string msg = "Unable to create layer for "; 181 msg += getName(); 182 info.errorHandler->onError(msg); 183 } 184 return; 185 } 186 187 if (!dirty.isEmpty()) { 188 mLayer->updateDeferred(this, dirty.fLeft, dirty.fTop, dirty.fRight, dirty.fBottom); 189 } 190 // This is not inside the above if because we may have called 191 // updateDeferred on a previous prepare pass that didn't have a renderer 192 if (info.renderer && mLayer->deferredUpdateScheduled) { 193 info.renderer->pushLayerUpdate(mLayer); 194 } 195} 196 197void RenderNode::prepareTreeImpl(TreeInfo& info) { 198 info.damageAccumulator->pushTransform(this); 199 200 if (info.mode == TreeInfo::MODE_FULL) { 201 pushStagingPropertiesChanges(info); 202 } 203 mAnimatorManager.animate(info); 204 prepareLayer(info); 205 if (info.mode == TreeInfo::MODE_FULL) { 206 pushStagingDisplayListChanges(info); 207 } 208 prepareSubTree(info, mDisplayListData); 209 pushLayerUpdate(info); 210 211 info.damageAccumulator->popTransform(); 212} 213 214void RenderNode::pushStagingPropertiesChanges(TreeInfo& info) { 215 // Push the animators first so that setupStartValueIfNecessary() is called 216 // before properties() is trampled by stagingProperties(), as they are 217 // required by some animators. 218 mAnimatorManager.pushStaging(info); 219 if (mDirtyPropertyFields) { 220 mDirtyPropertyFields = 0; 221 damageSelf(info); 222 info.damageAccumulator->popTransform(); 223 mProperties = mStagingProperties; 224 applyLayerPropertiesToLayer(info); 225 // We could try to be clever and only re-damage if the matrix changed. 226 // However, we don't need to worry about that. The cost of over-damaging 227 // here is only going to be a single additional map rect of this node 228 // plus a rect join(). The parent's transform (and up) will only be 229 // performed once. 230 info.damageAccumulator->pushTransform(this); 231 damageSelf(info); 232 } 233} 234 235void RenderNode::applyLayerPropertiesToLayer(TreeInfo& info) { 236 if (CC_LIKELY(!mLayer)) return; 237 238 const LayerProperties& props = properties().layerProperties(); 239 mLayer->setAlpha(props.alpha(), props.xferMode()); 240 mLayer->setColorFilter(props.colorFilter()); 241 mLayer->setBlend(props.needsBlending()); 242} 243 244void RenderNode::pushStagingDisplayListChanges(TreeInfo& info) { 245 if (mNeedsDisplayListDataSync) { 246 mNeedsDisplayListDataSync = false; 247 // Make sure we inc first so that we don't fluctuate between 0 and 1, 248 // which would thrash the layer cache 249 if (mStagingDisplayListData) { 250 for (size_t i = 0; i < mStagingDisplayListData->children().size(); i++) { 251 mStagingDisplayListData->children()[i]->mRenderNode->incParentRefCount(); 252 } 253 } 254 deleteDisplayListData(); 255 mDisplayListData = mStagingDisplayListData; 256 mStagingDisplayListData = NULL; 257 if (mDisplayListData) { 258 for (size_t i = 0; i < mDisplayListData->functors.size(); i++) { 259 (*mDisplayListData->functors[i])(DrawGlInfo::kModeSync, NULL); 260 } 261 } 262 damageSelf(info); 263 } 264} 265 266void RenderNode::deleteDisplayListData() { 267 if (mDisplayListData) { 268 for (size_t i = 0; i < mDisplayListData->children().size(); i++) { 269 mDisplayListData->children()[i]->mRenderNode->decParentRefCount(); 270 } 271 } 272 delete mDisplayListData; 273 mDisplayListData = NULL; 274} 275 276void RenderNode::prepareSubTree(TreeInfo& info, DisplayListData* subtree) { 277 if (subtree) { 278 TextureCache& cache = Caches::getInstance().textureCache; 279 info.out.hasFunctors |= subtree->functors.size(); 280 // TODO: Fix ownedBitmapResources to not require disabling prepareTextures 281 // and thus falling out of async drawing path. 282 if (subtree->ownedBitmapResources.size()) { 283 info.prepareTextures = false; 284 } 285 for (size_t i = 0; info.prepareTextures && i < subtree->bitmapResources.size(); i++) { 286 info.prepareTextures = cache.prefetchAndMarkInUse(subtree->bitmapResources[i]); 287 } 288 for (size_t i = 0; i < subtree->children().size(); i++) { 289 DrawRenderNodeOp* op = subtree->children()[i]; 290 RenderNode* childNode = op->mRenderNode; 291 info.damageAccumulator->pushTransform(&op->mTransformFromParent); 292 childNode->prepareTreeImpl(info); 293 info.damageAccumulator->popTransform(); 294 } 295 } 296} 297 298void RenderNode::destroyHardwareResources() { 299 if (mLayer) { 300 LayerRenderer::destroyLayer(mLayer); 301 mLayer = NULL; 302 } 303 if (mDisplayListData) { 304 for (size_t i = 0; i < mDisplayListData->children().size(); i++) { 305 mDisplayListData->children()[i]->mRenderNode->destroyHardwareResources(); 306 } 307 if (mNeedsDisplayListDataSync) { 308 // Next prepare tree we are going to push a new display list, so we can 309 // drop our current one now 310 deleteDisplayListData(); 311 } 312 } 313} 314 315void RenderNode::decParentRefCount() { 316 LOG_ALWAYS_FATAL_IF(!mParentCount, "already 0!"); 317 mParentCount--; 318 if (!mParentCount) { 319 // If a child of ours is being attached to our parent then this will incorrectly 320 // destroy its hardware resources. However, this situation is highly unlikely 321 // and the failure is "just" that the layer is re-created, so this should 322 // be safe enough 323 destroyHardwareResources(); 324 } 325} 326 327/* 328 * For property operations, we pass a savecount of 0, since the operations aren't part of the 329 * displaylist, and thus don't have to compensate for the record-time/playback-time discrepancy in 330 * base saveCount (i.e., how RestoreToCount uses saveCount + properties().getCount()) 331 */ 332#define PROPERTY_SAVECOUNT 0 333 334template <class T> 335void RenderNode::setViewProperties(OpenGLRenderer& renderer, T& handler) { 336#if DEBUG_DISPLAY_LIST 337 properties().debugOutputProperties(handler.level() + 1); 338#endif 339 if (properties().getLeft() != 0 || properties().getTop() != 0) { 340 renderer.translate(properties().getLeft(), properties().getTop()); 341 } 342 if (properties().getStaticMatrix()) { 343 renderer.concatMatrix(*properties().getStaticMatrix()); 344 } else if (properties().getAnimationMatrix()) { 345 renderer.concatMatrix(*properties().getAnimationMatrix()); 346 } 347 if (properties().hasTransformMatrix()) { 348 if (properties().isTransformTranslateOnly()) { 349 renderer.translate(properties().getTranslationX(), properties().getTranslationY()); 350 } else { 351 renderer.concatMatrix(*properties().getTransformMatrix()); 352 } 353 } 354 const bool isLayer = properties().layerProperties().type() != kLayerTypeNone; 355 int clipFlags = properties().getClippingFlags(); 356 if (properties().getAlpha() < 1) { 357 if (isLayer) { 358 clipFlags &= ~CLIP_TO_BOUNDS; // bounds clipping done by layer 359 360 renderer.setOverrideLayerAlpha(properties().getAlpha()); 361 } else if (!properties().getHasOverlappingRendering()) { 362 renderer.scaleAlpha(properties().getAlpha()); 363 } else { 364 Rect layerBounds(0, 0, getWidth(), getHeight()); 365 int saveFlags = SkCanvas::kHasAlphaLayer_SaveFlag; 366 if (clipFlags) { 367 saveFlags |= SkCanvas::kClipToLayer_SaveFlag; 368 properties().getClippingRectForFlags(clipFlags, &layerBounds); 369 clipFlags = 0; // all clipping done by saveLayer 370 } 371 372 SaveLayerOp* op = new (handler.allocator()) SaveLayerOp( 373 layerBounds.left, layerBounds.top, layerBounds.right, layerBounds.bottom, 374 properties().getAlpha() * 255, saveFlags); 375 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 376 } 377 } 378 if (clipFlags) { 379 Rect clipRect; 380 properties().getClippingRectForFlags(clipFlags, &clipRect); 381 ClipRectOp* op = new (handler.allocator()) ClipRectOp( 382 clipRect.left, clipRect.top, clipRect.right, clipRect.bottom, 383 SkRegion::kIntersect_Op); 384 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 385 } 386 387 if (CC_UNLIKELY(properties().hasClippingPath())) { 388 ClipPathOp* op = new (handler.allocator()) ClipPathOp( 389 properties().getClippingPath(), properties().getClippingPathOp()); 390 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 391 } 392} 393 394/** 395 * Apply property-based transformations to input matrix 396 * 397 * If true3dTransform is set to true, the transform applied to the input matrix will use true 4x4 398 * matrix computation instead of the Skia 3x3 matrix + camera hackery. 399 */ 400void RenderNode::applyViewPropertyTransforms(mat4& matrix, bool true3dTransform) { 401 if (properties().getLeft() != 0 || properties().getTop() != 0) { 402 matrix.translate(properties().getLeft(), properties().getTop()); 403 } 404 if (properties().getStaticMatrix()) { 405 mat4 stat(*properties().getStaticMatrix()); 406 matrix.multiply(stat); 407 } else if (properties().getAnimationMatrix()) { 408 mat4 anim(*properties().getAnimationMatrix()); 409 matrix.multiply(anim); 410 } 411 412 bool applyTranslationZ = true3dTransform && !MathUtils::isZero(properties().getZ()); 413 if (properties().hasTransformMatrix() || applyTranslationZ) { 414 if (properties().isTransformTranslateOnly()) { 415 matrix.translate(properties().getTranslationX(), properties().getTranslationY(), 416 true3dTransform ? properties().getZ() : 0.0f); 417 } else { 418 if (!true3dTransform) { 419 matrix.multiply(*properties().getTransformMatrix()); 420 } else { 421 mat4 true3dMat; 422 true3dMat.loadTranslate( 423 properties().getPivotX() + properties().getTranslationX(), 424 properties().getPivotY() + properties().getTranslationY(), 425 properties().getZ()); 426 true3dMat.rotate(properties().getRotationX(), 1, 0, 0); 427 true3dMat.rotate(properties().getRotationY(), 0, 1, 0); 428 true3dMat.rotate(properties().getRotation(), 0, 0, 1); 429 true3dMat.scale(properties().getScaleX(), properties().getScaleY(), 1); 430 true3dMat.translate(-properties().getPivotX(), -properties().getPivotY()); 431 432 matrix.multiply(true3dMat); 433 } 434 } 435 } 436} 437 438/** 439 * Organizes the DisplayList hierarchy to prepare for background projection reordering. 440 * 441 * This should be called before a call to defer() or drawDisplayList() 442 * 443 * Each DisplayList that serves as a 3d root builds its list of composited children, 444 * which are flagged to not draw in the standard draw loop. 445 */ 446void RenderNode::computeOrdering() { 447 ATRACE_CALL(); 448 mProjectedNodes.clear(); 449 450 // TODO: create temporary DDLOp and call computeOrderingImpl on top DisplayList so that 451 // transform properties are applied correctly to top level children 452 if (mDisplayListData == NULL) return; 453 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 454 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 455 childOp->mRenderNode->computeOrderingImpl(childOp, 456 properties().getOutline().getPath(), &mProjectedNodes, &mat4::identity()); 457 } 458} 459 460void RenderNode::computeOrderingImpl( 461 DrawRenderNodeOp* opState, 462 const SkPath* outlineOfProjectionSurface, 463 Vector<DrawRenderNodeOp*>* compositedChildrenOfProjectionSurface, 464 const mat4* transformFromProjectionSurface) { 465 mProjectedNodes.clear(); 466 if (mDisplayListData == NULL || mDisplayListData->isEmpty()) return; 467 468 // TODO: should avoid this calculation in most cases 469 // TODO: just calculate single matrix, down to all leaf composited elements 470 Matrix4 localTransformFromProjectionSurface(*transformFromProjectionSurface); 471 localTransformFromProjectionSurface.multiply(opState->mTransformFromParent); 472 473 if (properties().getProjectBackwards()) { 474 // composited projectee, flag for out of order draw, save matrix, and store in proj surface 475 opState->mSkipInOrderDraw = true; 476 opState->mTransformFromCompositingAncestor.load(localTransformFromProjectionSurface); 477 compositedChildrenOfProjectionSurface->add(opState); 478 } else { 479 // standard in order draw 480 opState->mSkipInOrderDraw = false; 481 } 482 483 if (mDisplayListData->children().size() > 0) { 484 const bool isProjectionReceiver = mDisplayListData->projectionReceiveIndex >= 0; 485 bool haveAppliedPropertiesToProjection = false; 486 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 487 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 488 RenderNode* child = childOp->mRenderNode; 489 490 const SkPath* projectionOutline = NULL; 491 Vector<DrawRenderNodeOp*>* projectionChildren = NULL; 492 const mat4* projectionTransform = NULL; 493 if (isProjectionReceiver && !child->properties().getProjectBackwards()) { 494 // if receiving projections, collect projecting descendent 495 496 // Note that if a direct descendent is projecting backwards, we pass it's 497 // grandparent projection collection, since it shouldn't project onto it's 498 // parent, where it will already be drawing. 499 projectionOutline = properties().getOutline().getPath(); 500 projectionChildren = &mProjectedNodes; 501 projectionTransform = &mat4::identity(); 502 } else { 503 if (!haveAppliedPropertiesToProjection) { 504 applyViewPropertyTransforms(localTransformFromProjectionSurface); 505 haveAppliedPropertiesToProjection = true; 506 } 507 projectionOutline = outlineOfProjectionSurface; 508 projectionChildren = compositedChildrenOfProjectionSurface; 509 projectionTransform = &localTransformFromProjectionSurface; 510 } 511 child->computeOrderingImpl(childOp, 512 projectionOutline, projectionChildren, projectionTransform); 513 } 514 } 515} 516 517class DeferOperationHandler { 518public: 519 DeferOperationHandler(DeferStateStruct& deferStruct, int level) 520 : mDeferStruct(deferStruct), mLevel(level) {} 521 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 522 operation->defer(mDeferStruct, saveCount, mLevel, clipToBounds); 523 } 524 inline LinearAllocator& allocator() { return *(mDeferStruct.mAllocator); } 525 inline void startMark(const char* name) {} // do nothing 526 inline void endMark() {} 527 inline int level() { return mLevel; } 528 inline int replayFlags() { return mDeferStruct.mReplayFlags; } 529 530private: 531 DeferStateStruct& mDeferStruct; 532 const int mLevel; 533}; 534 535void RenderNode::defer(DeferStateStruct& deferStruct, const int level) { 536 DeferOperationHandler handler(deferStruct, level); 537 issueOperations<DeferOperationHandler>(deferStruct.mRenderer, handler); 538} 539 540class ReplayOperationHandler { 541public: 542 ReplayOperationHandler(ReplayStateStruct& replayStruct, int level) 543 : mReplayStruct(replayStruct), mLevel(level) {} 544 inline void operator()(DisplayListOp* operation, int saveCount, bool clipToBounds) { 545#if DEBUG_DISPLAY_LIST_OPS_AS_EVENTS 546 mReplayStruct.mRenderer.eventMark(operation->name()); 547#endif 548 operation->replay(mReplayStruct, saveCount, mLevel, clipToBounds); 549 } 550 inline LinearAllocator& allocator() { return *(mReplayStruct.mAllocator); } 551 inline void startMark(const char* name) { 552 mReplayStruct.mRenderer.startMark(name); 553 } 554 inline void endMark() { 555 mReplayStruct.mRenderer.endMark(); 556 } 557 inline int level() { return mLevel; } 558 inline int replayFlags() { return mReplayStruct.mReplayFlags; } 559 560private: 561 ReplayStateStruct& mReplayStruct; 562 const int mLevel; 563}; 564 565void RenderNode::replay(ReplayStateStruct& replayStruct, const int level) { 566 ReplayOperationHandler handler(replayStruct, level); 567 issueOperations<ReplayOperationHandler>(replayStruct.mRenderer, handler); 568} 569 570void RenderNode::buildZSortedChildList(Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes) { 571 if (mDisplayListData == NULL || mDisplayListData->children().size() == 0) return; 572 573 for (unsigned int i = 0; i < mDisplayListData->children().size(); i++) { 574 DrawRenderNodeOp* childOp = mDisplayListData->children()[i]; 575 RenderNode* child = childOp->mRenderNode; 576 float childZ = child->properties().getZ(); 577 578 if (!MathUtils::isZero(childZ)) { 579 zTranslatedNodes.add(ZDrawRenderNodeOpPair(childZ, childOp)); 580 childOp->mSkipInOrderDraw = true; 581 } else if (!child->properties().getProjectBackwards()) { 582 // regular, in order drawing DisplayList 583 childOp->mSkipInOrderDraw = false; 584 } 585 } 586 587 // Z sort 3d children (stable-ness makes z compare fall back to standard drawing order) 588 std::stable_sort(zTranslatedNodes.begin(), zTranslatedNodes.end()); 589} 590 591template <class T> 592void RenderNode::issueDrawShadowOperation(const Matrix4& transformFromParent, T& handler) { 593 if (properties().getAlpha() <= 0.0f || !properties().getOutline().getPath()) return; 594 595 mat4 shadowMatrixXY(transformFromParent); 596 applyViewPropertyTransforms(shadowMatrixXY); 597 598 // Z matrix needs actual 3d transformation, so mapped z values will be correct 599 mat4 shadowMatrixZ(transformFromParent); 600 applyViewPropertyTransforms(shadowMatrixZ, true); 601 602 const SkPath* outlinePath = properties().getOutline().getPath(); 603 const RevealClip& revealClip = properties().getRevealClip(); 604 const SkPath* revealClipPath = revealClip.hasConvexClip() 605 ? revealClip.getPath() : NULL; // only pass the reveal clip's path if it's convex 606 607 if (revealClipPath && revealClipPath->isEmpty()) return; 608 609 /** 610 * The drawing area of the caster is always the same as the its perimeter (which 611 * the shadow system uses) *except* in the inverse clip case. Inform the shadow 612 * system that the caster's drawing area (as opposed to its perimeter) has been 613 * clipped, so that it knows the caster can't be opaque. 614 */ 615 bool casterUnclipped = !revealClip.willClip() || revealClip.hasConvexClip(); 616 617 DisplayListOp* shadowOp = new (handler.allocator()) DrawShadowOp( 618 shadowMatrixXY, shadowMatrixZ, 619 properties().getAlpha(), casterUnclipped, 620 outlinePath, revealClipPath); 621 handler(shadowOp, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 622} 623 624template <class T> 625int RenderNode::issueOperationsOfNegZChildren( 626 const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 627 OpenGLRenderer& renderer, T& handler) { 628 if (zTranslatedNodes.isEmpty()) return -1; 629 630 // create a save around the body of the ViewGroup's draw method, so that 631 // matrix/clip methods don't affect composited children 632 int shadowSaveCount = renderer.getSaveCount(); 633 handler(new (handler.allocator()) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 634 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 635 636 issueOperationsOf3dChildren(zTranslatedNodes, kNegativeZChildren, renderer, handler); 637 return shadowSaveCount; 638} 639 640template <class T> 641void RenderNode::issueOperationsOfPosZChildren(int shadowRestoreTo, 642 const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 643 OpenGLRenderer& renderer, T& handler) { 644 if (zTranslatedNodes.isEmpty()) return; 645 646 LOG_ALWAYS_FATAL_IF(shadowRestoreTo < 0, "invalid save to restore to"); 647 handler(new (handler.allocator()) RestoreToCountOp(shadowRestoreTo), 648 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 649 renderer.setOverrideLayerAlpha(1.0f); 650 651 issueOperationsOf3dChildren(zTranslatedNodes, kPositiveZChildren, renderer, handler); 652} 653 654#define SHADOW_DELTA 0.1f 655 656template <class T> 657void RenderNode::issueOperationsOf3dChildren(const Vector<ZDrawRenderNodeOpPair>& zTranslatedNodes, 658 ChildrenSelectMode mode, OpenGLRenderer& renderer, T& handler) { 659 const int size = zTranslatedNodes.size(); 660 if (size == 0 661 || (mode == kNegativeZChildren && zTranslatedNodes[0].key > 0.0f) 662 || (mode == kPositiveZChildren && zTranslatedNodes[size - 1].key < 0.0f)) { 663 // no 3d children to draw 664 return; 665 } 666 667 /** 668 * Draw shadows and (potential) casters mostly in order, but allow the shadows of casters 669 * with very similar Z heights to draw together. 670 * 671 * This way, if Views A & B have the same Z height and are both casting shadows, the shadows are 672 * underneath both, and neither's shadow is drawn on top of the other. 673 */ 674 const size_t nonNegativeIndex = findNonNegativeIndex(zTranslatedNodes); 675 size_t drawIndex, shadowIndex, endIndex; 676 if (mode == kNegativeZChildren) { 677 drawIndex = 0; 678 endIndex = nonNegativeIndex; 679 shadowIndex = endIndex; // draw no shadows 680 } else { 681 drawIndex = nonNegativeIndex; 682 endIndex = size; 683 shadowIndex = drawIndex; // potentially draw shadow for each pos Z child 684 } 685 686 DISPLAY_LIST_LOGD("%*s%d %s 3d children:", (handler.level() + 1) * 2, "", 687 endIndex - drawIndex, mode == kNegativeZChildren ? "negative" : "positive"); 688 689 float lastCasterZ = 0.0f; 690 while (shadowIndex < endIndex || drawIndex < endIndex) { 691 if (shadowIndex < endIndex) { 692 DrawRenderNodeOp* casterOp = zTranslatedNodes[shadowIndex].value; 693 RenderNode* caster = casterOp->mRenderNode; 694 const float casterZ = zTranslatedNodes[shadowIndex].key; 695 // attempt to render the shadow if the caster about to be drawn is its caster, 696 // OR if its caster's Z value is similar to the previous potential caster 697 if (shadowIndex == drawIndex || casterZ - lastCasterZ < SHADOW_DELTA) { 698 caster->issueDrawShadowOperation(casterOp->mTransformFromParent, handler); 699 700 lastCasterZ = casterZ; // must do this even if current caster not casting a shadow 701 shadowIndex++; 702 continue; 703 } 704 } 705 706 // only the actual child DL draw needs to be in save/restore, 707 // since it modifies the renderer's matrix 708 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 709 710 DrawRenderNodeOp* childOp = zTranslatedNodes[drawIndex].value; 711 RenderNode* child = childOp->mRenderNode; 712 713 renderer.concatMatrix(childOp->mTransformFromParent); 714 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 715 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 716 childOp->mSkipInOrderDraw = true; 717 718 renderer.restoreToCount(restoreTo); 719 drawIndex++; 720 } 721} 722 723template <class T> 724void RenderNode::issueOperationsOfProjectedChildren(OpenGLRenderer& renderer, T& handler) { 725 DISPLAY_LIST_LOGD("%*s%d projected children:", (handler.level() + 1) * 2, "", mProjectedNodes.size()); 726 const SkPath* projectionReceiverOutline = properties().getOutline().getPath(); 727 int restoreTo = renderer.getSaveCount(); 728 729 // If the projection reciever has an outline, we mask each of the projected rendernodes to it 730 // Either with clipRect, or special saveLayer masking 731 LinearAllocator& alloc = handler.allocator(); 732 if (projectionReceiverOutline != NULL) { 733 const SkRect& outlineBounds = projectionReceiverOutline->getBounds(); 734 if (projectionReceiverOutline->isRect(NULL)) { 735 // mask to the rect outline simply with clipRect 736 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 737 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 738 ClipRectOp* clipOp = new (alloc) ClipRectOp( 739 outlineBounds.left(), outlineBounds.top(), 740 outlineBounds.right(), outlineBounds.bottom(), SkRegion::kIntersect_Op); 741 handler(clipOp, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 742 } else { 743 // wrap the projected RenderNodes with a SaveLayer that will mask to the outline 744 SaveLayerOp* op = new (alloc) SaveLayerOp( 745 outlineBounds.left(), outlineBounds.top(), 746 outlineBounds.right(), outlineBounds.bottom(), 747 255, SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag | SkCanvas::kARGB_ClipLayer_SaveFlag); 748 op->setMask(projectionReceiverOutline); 749 handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds()); 750 751 /* TODO: add optimizations here to take advantage of placement/size of projected 752 * children (which may shrink saveLayer area significantly). This is dependent on 753 * passing actual drawing/dirtying bounds of projected content down to native. 754 */ 755 } 756 } 757 758 // draw projected nodes 759 for (size_t i = 0; i < mProjectedNodes.size(); i++) { 760 DrawRenderNodeOp* childOp = mProjectedNodes[i]; 761 762 // matrix save, concat, and restore can be done safely without allocating operations 763 int restoreTo = renderer.save(SkCanvas::kMatrix_SaveFlag); 764 renderer.concatMatrix(childOp->mTransformFromCompositingAncestor); 765 childOp->mSkipInOrderDraw = false; // this is horrible, I'm so sorry everyone 766 handler(childOp, renderer.getSaveCount() - 1, properties().getClipToBounds()); 767 childOp->mSkipInOrderDraw = true; 768 renderer.restoreToCount(restoreTo); 769 } 770 771 if (projectionReceiverOutline != NULL) { 772 handler(new (alloc) RestoreToCountOp(restoreTo), 773 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 774 } 775} 776 777/** 778 * This function serves both defer and replay modes, and will organize the displayList's component 779 * operations for a single frame: 780 * 781 * Every 'simple' state operation that affects just the matrix and alpha (or other factors of 782 * DeferredDisplayState) may be issued directly to the renderer, but complex operations (with custom 783 * defer logic) and operations in displayListOps are issued through the 'handler' which handles the 784 * defer vs replay logic, per operation 785 */ 786template <class T> 787void RenderNode::issueOperations(OpenGLRenderer& renderer, T& handler) { 788 const int level = handler.level(); 789 if (mDisplayListData->isEmpty()) { 790 DISPLAY_LIST_LOGD("%*sEmpty display list (%p, %s)", level * 2, "", this, getName()); 791 return; 792 } 793 794 const bool drawLayer = (mLayer && (&renderer != mLayer->renderer)); 795 // If we are updating the contents of mLayer, we don't want to apply any of 796 // the RenderNode's properties to this issueOperations pass. Those will all 797 // be applied when the layer is drawn, aka when this is true. 798 const bool useViewProperties = (!mLayer || drawLayer); 799 if (useViewProperties) { 800 const Outline& outline = properties().getOutline(); 801 if (properties().getAlpha() <= 0 || (outline.getShouldClip() && outline.isEmpty())) { 802 DISPLAY_LIST_LOGD("%*sRejected display list (%p, %s)", level * 2, "", this, getName()); 803 return; 804 } 805 } 806 807 handler.startMark(getName()); 808 809#if DEBUG_DISPLAY_LIST 810 const Rect& clipRect = renderer.getLocalClipBounds(); 811 DISPLAY_LIST_LOGD("%*sStart display list (%p, %s), localClipBounds: %.0f, %.0f, %.0f, %.0f", 812 level * 2, "", this, getName(), 813 clipRect.left, clipRect.top, clipRect.right, clipRect.bottom); 814#endif 815 816 LinearAllocator& alloc = handler.allocator(); 817 int restoreTo = renderer.getSaveCount(); 818 handler(new (alloc) SaveOp(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag), 819 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 820 821 DISPLAY_LIST_LOGD("%*sSave %d %d", (level + 1) * 2, "", 822 SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag, restoreTo); 823 824 if (useViewProperties) { 825 setViewProperties<T>(renderer, handler); 826 } 827 828 bool quickRejected = properties().getClipToBounds() 829 && renderer.quickRejectConservative(0, 0, properties().getWidth(), properties().getHeight()); 830 if (!quickRejected) { 831 if (mProperties.getOutline().willClip()) { 832 renderer.setClippingOutline(alloc, &(mProperties.getOutline())); 833 } 834 835 if (drawLayer) { 836 handler(new (alloc) DrawLayerOp(mLayer, 0, 0), 837 renderer.getSaveCount() - 1, properties().getClipToBounds()); 838 } else { 839 Vector<ZDrawRenderNodeOpPair> zTranslatedNodes; 840 buildZSortedChildList(zTranslatedNodes); 841 842 // for 3d root, draw children with negative z values 843 int shadowRestoreTo = issueOperationsOfNegZChildren(zTranslatedNodes, renderer, handler); 844 845 DisplayListLogBuffer& logBuffer = DisplayListLogBuffer::getInstance(); 846 const int saveCountOffset = renderer.getSaveCount() - 1; 847 const int projectionReceiveIndex = mDisplayListData->projectionReceiveIndex; 848 const int size = static_cast<int>(mDisplayListData->displayListOps.size()); 849 for (int i = 0; i < size; i++) { 850 DisplayListOp *op = mDisplayListData->displayListOps[i]; 851 852#if DEBUG_DISPLAY_LIST 853 op->output(level + 1); 854#endif 855 logBuffer.writeCommand(level, op->name()); 856 handler(op, saveCountOffset, properties().getClipToBounds()); 857 858 if (CC_UNLIKELY(i == projectionReceiveIndex && mProjectedNodes.size() > 0)) { 859 issueOperationsOfProjectedChildren(renderer, handler); 860 } 861 } 862 863 // for 3d root, draw children with positive z values 864 issueOperationsOfPosZChildren(shadowRestoreTo, zTranslatedNodes, renderer, handler); 865 } 866 } 867 868 DISPLAY_LIST_LOGD("%*sRestoreToCount %d", (level + 1) * 2, "", restoreTo); 869 handler(new (alloc) RestoreToCountOp(restoreTo), 870 PROPERTY_SAVECOUNT, properties().getClipToBounds()); 871 renderer.setOverrideLayerAlpha(1.0f); 872 873 DISPLAY_LIST_LOGD("%*sDone (%p, %s)", level * 2, "", this, getName()); 874 handler.endMark(); 875} 876 877} /* namespace uirenderer */ 878} /* namespace android */ 879