| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "CanvasContext.h" |
| #include <GpuMemoryTracker.h> |
| |
| #include "AnimationContext.h" |
| #include "Caches.h" |
| #include "EglManager.h" |
| #include "Frame.h" |
| #include "LayerUpdateQueue.h" |
| #include "Properties.h" |
| #include "RenderThread.h" |
| #include "hwui/Canvas.h" |
| #include "pipeline/skia/SkiaOpenGLPipeline.h" |
| #include "pipeline/skia/SkiaPipeline.h" |
| #include "pipeline/skia/SkiaVulkanPipeline.h" |
| #include "renderstate/RenderState.h" |
| #include "utils/GLUtils.h" |
| #include "utils/TimeUtils.h" |
| #include "../Properties.h" |
| |
| #include <cutils/properties.h> |
| #include <private/hwui/DrawGlInfo.h> |
| #include <strings.h> |
| |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| #include <algorithm> |
| |
| #include <cstdlib> |
| |
| #define TRIM_MEMORY_COMPLETE 80 |
| #define TRIM_MEMORY_UI_HIDDEN 20 |
| |
| #define LOG_FRAMETIME_MMA 0 |
| |
| #if LOG_FRAMETIME_MMA |
| static float sBenchMma = 0; |
| static int sFrameCount = 0; |
| static const float NANOS_PER_MILLIS_F = 1000000.0f; |
| #endif |
| |
| namespace android { |
| namespace uirenderer { |
| namespace renderthread { |
| |
| CanvasContext* CanvasContext::create(RenderThread& thread, bool translucent, |
| RenderNode* rootRenderNode, IContextFactory* contextFactory) { |
| auto renderType = Properties::getRenderPipelineType(); |
| |
| switch (renderType) { |
| case RenderPipelineType::SkiaGL: |
| return new CanvasContext(thread, translucent, rootRenderNode, contextFactory, |
| std::make_unique<skiapipeline::SkiaOpenGLPipeline>(thread)); |
| case RenderPipelineType::SkiaVulkan: |
| return new CanvasContext(thread, translucent, rootRenderNode, contextFactory, |
| std::make_unique<skiapipeline::SkiaVulkanPipeline>(thread)); |
| default: |
| LOG_ALWAYS_FATAL("canvas context type %d not supported", (int32_t)renderType); |
| break; |
| } |
| return nullptr; |
| } |
| |
| void CanvasContext::destroyLayer(RenderNode* node) { |
| skiapipeline::SkiaPipeline::destroyLayer(node); |
| } |
| |
| void CanvasContext::invokeFunctor(const RenderThread& thread, Functor* functor) { |
| ATRACE_CALL(); |
| auto renderType = Properties::getRenderPipelineType(); |
| switch (renderType) { |
| case RenderPipelineType::SkiaGL: |
| skiapipeline::SkiaOpenGLPipeline::invokeFunctor(thread, functor); |
| break; |
| case RenderPipelineType::SkiaVulkan: |
| skiapipeline::SkiaVulkanPipeline::invokeFunctor(thread, functor); |
| break; |
| default: |
| LOG_ALWAYS_FATAL("canvas context type %d not supported", (int32_t)renderType); |
| break; |
| } |
| } |
| |
| void CanvasContext::prepareToDraw(const RenderThread& thread, Bitmap* bitmap) { |
| skiapipeline::SkiaPipeline::prepareToDraw(thread, bitmap); |
| } |
| |
| CanvasContext::CanvasContext(RenderThread& thread, bool translucent, RenderNode* rootRenderNode, |
| IContextFactory* contextFactory, |
| std::unique_ptr<IRenderPipeline> renderPipeline) |
| : mRenderThread(thread) |
| , mOpaque(!translucent) |
| , mAnimationContext(contextFactory->createAnimationContext(mRenderThread.timeLord())) |
| , mJankTracker(&thread.globalProfileData(), thread.mainDisplayInfo()) |
| , mProfiler(mJankTracker.frames()) |
| , mContentDrawBounds(0, 0, 0, 0) |
| , mRenderPipeline(std::move(renderPipeline)) { |
| rootRenderNode->makeRoot(); |
| mRenderNodes.emplace_back(rootRenderNode); |
| mRenderThread.renderState().registerCanvasContext(this); |
| mProfiler.setDensity(mRenderThread.mainDisplayInfo().density); |
| } |
| |
| CanvasContext::~CanvasContext() { |
| destroy(); |
| mRenderThread.renderState().unregisterCanvasContext(this); |
| for (auto& node : mRenderNodes) { |
| node->clearRoot(); |
| } |
| mRenderNodes.clear(); |
| } |
| |
| void CanvasContext::addRenderNode(RenderNode* node, bool placeFront) { |
| int pos = placeFront ? 0 : static_cast<int>(mRenderNodes.size()); |
| node->makeRoot(); |
| mRenderNodes.emplace(mRenderNodes.begin() + pos, node); |
| } |
| |
| void CanvasContext::removeRenderNode(RenderNode* node) { |
| node->clearRoot(); |
| mRenderNodes.erase(std::remove(mRenderNodes.begin(), mRenderNodes.end(), node), |
| mRenderNodes.end()); |
| } |
| |
| void CanvasContext::destroy() { |
| stopDrawing(); |
| setSurface(nullptr); |
| freePrefetchedLayers(); |
| destroyHardwareResources(); |
| mAnimationContext->destroy(); |
| } |
| |
| void CanvasContext::setSurface(sp<Surface>&& surface) { |
| ATRACE_CALL(); |
| |
| mNativeSurface = std::move(surface); |
| |
| ColorMode colorMode = mWideColorGamut ? ColorMode::WideColorGamut : ColorMode::Srgb; |
| bool hasSurface = mRenderPipeline->setSurface(mNativeSurface.get(), mSwapBehavior, colorMode); |
| |
| mFrameNumber = -1; |
| |
| if (hasSurface) { |
| mHaveNewSurface = true; |
| mSwapHistory.clear(); |
| } else { |
| mRenderThread.removeFrameCallback(this); |
| } |
| } |
| |
| void CanvasContext::setSwapBehavior(SwapBehavior swapBehavior) { |
| mSwapBehavior = swapBehavior; |
| } |
| |
| bool CanvasContext::pauseSurface() { |
| return mRenderThread.removeFrameCallback(this); |
| } |
| |
| void CanvasContext::setStopped(bool stopped) { |
| if (mStopped != stopped) { |
| mStopped = stopped; |
| if (mStopped) { |
| mRenderThread.removeFrameCallback(this); |
| mRenderPipeline->onStop(); |
| } else if (mIsDirty && hasSurface()) { |
| mRenderThread.postFrameCallback(this); |
| } |
| } |
| } |
| |
| void CanvasContext::setup(float lightRadius, uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha) { |
| mLightGeometry.radius = lightRadius; |
| mLightInfo.ambientShadowAlpha = ambientShadowAlpha; |
| mLightInfo.spotShadowAlpha = spotShadowAlpha; |
| } |
| |
| void CanvasContext::setLightCenter(const Vector3& lightCenter) { |
| mLightGeometry.center = lightCenter; |
| } |
| |
| void CanvasContext::setOpaque(bool opaque) { |
| mOpaque = opaque; |
| } |
| |
| void CanvasContext::setWideGamut(bool wideGamut) { |
| mWideColorGamut = wideGamut; |
| } |
| |
| bool CanvasContext::makeCurrent() { |
| if (mStopped) return false; |
| |
| auto result = mRenderPipeline->makeCurrent(); |
| switch (result) { |
| case MakeCurrentResult::AlreadyCurrent: |
| return true; |
| case MakeCurrentResult::Failed: |
| mHaveNewSurface = true; |
| setSurface(nullptr); |
| return false; |
| case MakeCurrentResult::Succeeded: |
| mHaveNewSurface = true; |
| return true; |
| default: |
| LOG_ALWAYS_FATAL("unexpected result %d from IRenderPipeline::makeCurrent", |
| (int32_t)result); |
| } |
| |
| return true; |
| } |
| |
| static bool wasSkipped(FrameInfo* info) { |
| return info && ((*info)[FrameInfoIndex::Flags] & FrameInfoFlags::SkippedFrame); |
| } |
| |
| bool CanvasContext::isSwapChainStuffed() { |
| static const auto SLOW_THRESHOLD = 6_ms; |
| |
| if (mSwapHistory.size() != mSwapHistory.capacity()) { |
| // We want at least 3 frames of history before attempting to |
| // guess if the queue is stuffed |
| return false; |
| } |
| nsecs_t frameInterval = mRenderThread.timeLord().frameIntervalNanos(); |
| auto& swapA = mSwapHistory[0]; |
| |
| // Was there a happy queue & dequeue time? If so, don't |
| // consider it stuffed |
| if (swapA.dequeueDuration < SLOW_THRESHOLD && swapA.queueDuration < SLOW_THRESHOLD) { |
| return false; |
| } |
| |
| for (size_t i = 1; i < mSwapHistory.size(); i++) { |
| auto& swapB = mSwapHistory[i]; |
| |
| // If there's a multi-frameInterval gap we effectively already dropped a frame, |
| // so consider the queue healthy. |
| if (swapA.swapCompletedTime - swapB.swapCompletedTime > frameInterval * 3) { |
| return false; |
| } |
| |
| // Was there a happy queue & dequeue time? If so, don't |
| // consider it stuffed |
| if (swapB.dequeueDuration < SLOW_THRESHOLD && swapB.queueDuration < SLOW_THRESHOLD) { |
| return false; |
| } |
| |
| swapA = swapB; |
| } |
| |
| // All signs point to a stuffed swap chain |
| ATRACE_NAME("swap chain stuffed"); |
| return true; |
| } |
| |
| void CanvasContext::prepareTree(TreeInfo& info, int64_t* uiFrameInfo, int64_t syncQueued, |
| RenderNode* target) { |
| mRenderThread.removeFrameCallback(this); |
| |
| // If the previous frame was dropped we don't need to hold onto it, so |
| // just keep using the previous frame's structure instead |
| if (!wasSkipped(mCurrentFrameInfo)) { |
| mCurrentFrameInfo = mJankTracker.startFrame(); |
| } |
| mCurrentFrameInfo->importUiThreadInfo(uiFrameInfo); |
| mCurrentFrameInfo->set(FrameInfoIndex::SyncQueued) = syncQueued; |
| mCurrentFrameInfo->markSyncStart(); |
| |
| info.damageAccumulator = &mDamageAccumulator; |
| info.layerUpdateQueue = &mLayerUpdateQueue; |
| |
| mAnimationContext->startFrame(info.mode); |
| mRenderPipeline->onPrepareTree(); |
| for (const sp<RenderNode>& node : mRenderNodes) { |
| // Only the primary target node will be drawn full - all other nodes would get drawn in |
| // real time mode. In case of a window, the primary node is the window content and the other |
| // node(s) are non client / filler nodes. |
| info.mode = (node.get() == target ? TreeInfo::MODE_FULL : TreeInfo::MODE_RT_ONLY); |
| node->prepareTree(info); |
| GL_CHECKPOINT(MODERATE); |
| } |
| mAnimationContext->runRemainingAnimations(info); |
| GL_CHECKPOINT(MODERATE); |
| |
| freePrefetchedLayers(); |
| GL_CHECKPOINT(MODERATE); |
| |
| mIsDirty = true; |
| |
| if (CC_UNLIKELY(!mNativeSurface.get())) { |
| mCurrentFrameInfo->addFlag(FrameInfoFlags::SkippedFrame); |
| info.out.canDrawThisFrame = false; |
| return; |
| } |
| |
| if (CC_LIKELY(mSwapHistory.size() && !Properties::forceDrawFrame)) { |
| nsecs_t latestVsync = mRenderThread.timeLord().latestVsync(); |
| SwapHistory& lastSwap = mSwapHistory.back(); |
| nsecs_t vsyncDelta = std::abs(lastSwap.vsyncTime - latestVsync); |
| // The slight fudge-factor is to deal with cases where |
| // the vsync was estimated due to being slow handling the signal. |
| // See the logic in TimeLord#computeFrameTimeNanos or in |
| // Choreographer.java for details on when this happens |
| if (vsyncDelta < 2_ms) { |
| // Already drew for this vsync pulse, UI draw request missed |
| // the deadline for RT animations |
| info.out.canDrawThisFrame = false; |
| } |
| /* This logic exists to try and recover from a display latch miss, which essentially |
| * results in the bufferqueue being double-buffered instead of triple-buffered. |
| * SurfaceFlinger itself now tries to handle & recover from this situation, so this |
| * logic should no longer be necessary. As it's occasionally triggering when |
| * undesired disable it. |
| * TODO: Remove this entirely if the results are solid. |
| else if (vsyncDelta >= mRenderThread.timeLord().frameIntervalNanos() * 3 || |
| (latestVsync - mLastDropVsync) < 500_ms) { |
| // It's been several frame intervals, assume the buffer queue is fine |
| // or the last drop was too recent |
| info.out.canDrawThisFrame = true; |
| } else { |
| info.out.canDrawThisFrame = !isSwapChainStuffed(); |
| if (!info.out.canDrawThisFrame) { |
| // dropping frame |
| mLastDropVsync = mRenderThread.timeLord().latestVsync(); |
| } |
| } |
| */ |
| } else { |
| info.out.canDrawThisFrame = true; |
| } |
| |
| if (!info.out.canDrawThisFrame) { |
| mCurrentFrameInfo->addFlag(FrameInfoFlags::SkippedFrame); |
| } |
| |
| if (info.out.hasAnimations || !info.out.canDrawThisFrame) { |
| if (CC_UNLIKELY(!Properties::enableRTAnimations)) { |
| info.out.requiresUiRedraw = true; |
| } |
| if (!info.out.requiresUiRedraw) { |
| // If animationsNeedsRedraw is set don't bother posting for an RT anim |
| // as we will just end up fighting the UI thread. |
| mRenderThread.postFrameCallback(this); |
| } |
| } |
| } |
| |
| void CanvasContext::stopDrawing() { |
| mRenderThread.removeFrameCallback(this); |
| mAnimationContext->pauseAnimators(); |
| } |
| |
| void CanvasContext::notifyFramePending() { |
| ATRACE_CALL(); |
| mRenderThread.pushBackFrameCallback(this); |
| } |
| |
| void CanvasContext::draw() { |
| SkRect dirty; |
| mDamageAccumulator.finish(&dirty); |
| |
| // TODO: Re-enable after figuring out cause of b/22592975 |
| // if (dirty.isEmpty() && Properties::skipEmptyFrames) { |
| // mCurrentFrameInfo->addFlag(FrameInfoFlags::SkippedFrame); |
| // return; |
| // } |
| |
| mCurrentFrameInfo->markIssueDrawCommandsStart(); |
| |
| Frame frame = mRenderPipeline->getFrame(); |
| |
| SkRect windowDirty = computeDirtyRect(frame, &dirty); |
| |
| bool drew = mRenderPipeline->draw(frame, windowDirty, dirty, mLightGeometry, &mLayerUpdateQueue, |
| mContentDrawBounds, mOpaque, mWideColorGamut, mLightInfo, |
| mRenderNodes, &(profiler())); |
| |
| waitOnFences(); |
| |
| bool requireSwap = false; |
| bool didSwap = |
| mRenderPipeline->swapBuffers(frame, drew, windowDirty, mCurrentFrameInfo, &requireSwap); |
| |
| mIsDirty = false; |
| |
| if (requireSwap) { |
| if (!didSwap) { // some error happened |
| setSurface(nullptr); |
| } |
| SwapHistory& swap = mSwapHistory.next(); |
| swap.damage = windowDirty; |
| swap.swapCompletedTime = systemTime(CLOCK_MONOTONIC); |
| swap.vsyncTime = mRenderThread.timeLord().latestVsync(); |
| if (mNativeSurface.get()) { |
| int durationUs; |
| nsecs_t dequeueStart = mNativeSurface->getLastDequeueStartTime(); |
| if (dequeueStart < mCurrentFrameInfo->get(FrameInfoIndex::SyncStart)) { |
| // Ignoring dequeue duration as it happened prior to frame render start |
| // and thus is not part of the frame. |
| swap.dequeueDuration = 0; |
| } else { |
| mNativeSurface->query(NATIVE_WINDOW_LAST_DEQUEUE_DURATION, &durationUs); |
| swap.dequeueDuration = us2ns(durationUs); |
| } |
| mNativeSurface->query(NATIVE_WINDOW_LAST_QUEUE_DURATION, &durationUs); |
| swap.queueDuration = us2ns(durationUs); |
| } else { |
| swap.dequeueDuration = 0; |
| swap.queueDuration = 0; |
| } |
| mCurrentFrameInfo->set(FrameInfoIndex::DequeueBufferDuration) = swap.dequeueDuration; |
| mCurrentFrameInfo->set(FrameInfoIndex::QueueBufferDuration) = swap.queueDuration; |
| mHaveNewSurface = false; |
| mFrameNumber = -1; |
| } else { |
| mCurrentFrameInfo->set(FrameInfoIndex::DequeueBufferDuration) = 0; |
| mCurrentFrameInfo->set(FrameInfoIndex::QueueBufferDuration) = 0; |
| } |
| |
| // TODO: Use a fence for real completion? |
| mCurrentFrameInfo->markFrameCompleted(); |
| |
| #if LOG_FRAMETIME_MMA |
| float thisFrame = mCurrentFrameInfo->duration(FrameInfoIndex::IssueDrawCommandsStart, |
| FrameInfoIndex::FrameCompleted) / |
| NANOS_PER_MILLIS_F; |
| if (sFrameCount) { |
| sBenchMma = ((9 * sBenchMma) + thisFrame) / 10; |
| } else { |
| sBenchMma = thisFrame; |
| } |
| if (++sFrameCount == 10) { |
| sFrameCount = 1; |
| ALOGD("Average frame time: %.4f", sBenchMma); |
| } |
| #endif |
| |
| mJankTracker.finishFrame(*mCurrentFrameInfo); |
| if (CC_UNLIKELY(mFrameMetricsReporter.get() != nullptr)) { |
| mFrameMetricsReporter->reportFrameMetrics(mCurrentFrameInfo->data()); |
| } |
| |
| GpuMemoryTracker::onFrameCompleted(); |
| #ifdef BUGREPORT_FONT_CACHE_USAGE |
| auto renderType = Properties::getRenderPipelineType(); |
| if (RenderPipelineType::OpenGL == renderType) { |
| Caches& caches = Caches::getInstance(); |
| caches.fontRenderer.getFontRenderer().historyTracker().frameCompleted(); |
| } |
| #endif |
| } |
| |
| // Called by choreographer to do an RT-driven animation |
| void CanvasContext::doFrame() { |
| if (!mRenderPipeline->isSurfaceReady()) return; |
| prepareAndDraw(nullptr); |
| } |
| |
| void CanvasContext::prepareAndDraw(RenderNode* node) { |
| ATRACE_CALL(); |
| |
| nsecs_t vsync = mRenderThread.timeLord().computeFrameTimeNanos(); |
| int64_t frameInfo[UI_THREAD_FRAME_INFO_SIZE]; |
| UiFrameInfoBuilder(frameInfo).addFlag(FrameInfoFlags::RTAnimation).setVsync(vsync, vsync); |
| |
| TreeInfo info(TreeInfo::MODE_RT_ONLY, *this); |
| prepareTree(info, frameInfo, systemTime(CLOCK_MONOTONIC), node); |
| if (info.out.canDrawThisFrame) { |
| draw(); |
| } else { |
| // wait on fences so tasks don't overlap next frame |
| waitOnFences(); |
| } |
| } |
| |
| void CanvasContext::markLayerInUse(RenderNode* node) { |
| if (mPrefetchedLayers.erase(node)) { |
| node->decStrong(nullptr); |
| } |
| } |
| |
| void CanvasContext::freePrefetchedLayers() { |
| if (mPrefetchedLayers.size()) { |
| for (auto& node : mPrefetchedLayers) { |
| ALOGW("Incorrectly called buildLayer on View: %s, destroying layer...", |
| node->getName()); |
| node->destroyLayers(); |
| node->decStrong(nullptr); |
| } |
| mPrefetchedLayers.clear(); |
| } |
| } |
| |
| void CanvasContext::buildLayer(RenderNode* node) { |
| ATRACE_CALL(); |
| if (!mRenderPipeline->isContextReady()) return; |
| |
| // buildLayer() will leave the tree in an unknown state, so we must stop drawing |
| stopDrawing(); |
| |
| TreeInfo info(TreeInfo::MODE_FULL, *this); |
| info.damageAccumulator = &mDamageAccumulator; |
| info.layerUpdateQueue = &mLayerUpdateQueue; |
| info.runAnimations = false; |
| node->prepareTree(info); |
| SkRect ignore; |
| mDamageAccumulator.finish(&ignore); |
| // Tickle the GENERIC property on node to mark it as dirty for damaging |
| // purposes when the frame is actually drawn |
| node->setPropertyFieldsDirty(RenderNode::GENERIC); |
| |
| mRenderPipeline->renderLayers(mLightGeometry, &mLayerUpdateQueue, mOpaque, mWideColorGamut, |
| mLightInfo); |
| |
| node->incStrong(nullptr); |
| mPrefetchedLayers.insert(node); |
| } |
| |
| bool CanvasContext::copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap) { |
| return mRenderPipeline->copyLayerInto(layer, bitmap); |
| } |
| |
| void CanvasContext::destroyHardwareResources() { |
| stopDrawing(); |
| if (mRenderPipeline->isContextReady()) { |
| freePrefetchedLayers(); |
| for (const sp<RenderNode>& node : mRenderNodes) { |
| node->destroyHardwareResources(); |
| } |
| mRenderPipeline->onDestroyHardwareResources(); |
| } |
| } |
| |
| void CanvasContext::trimMemory(RenderThread& thread, int level) { |
| ATRACE_CALL(); |
| if (!thread.getGrContext()) return; |
| ATRACE_CALL(); |
| if (level >= TRIM_MEMORY_COMPLETE) { |
| thread.cacheManager().trimMemory(CacheManager::TrimMemoryMode::Complete); |
| thread.destroyGlContext(); |
| thread.vulkanManager().destroy(); |
| } else if (level >= TRIM_MEMORY_UI_HIDDEN) { |
| thread.cacheManager().trimMemory(CacheManager::TrimMemoryMode::UiHidden); |
| } |
| } |
| |
| DeferredLayerUpdater* CanvasContext::createTextureLayer() { |
| return mRenderPipeline->createTextureLayer(); |
| } |
| |
| void CanvasContext::dumpFrames(int fd) { |
| mJankTracker.dumpStats(fd); |
| mJankTracker.dumpFrames(fd); |
| } |
| |
| void CanvasContext::resetFrameStats() { |
| mJankTracker.reset(); |
| } |
| |
| void CanvasContext::setName(const std::string&& name) { |
| mJankTracker.setDescription(JankTrackerType::Window, std::move(name)); |
| } |
| |
| void CanvasContext::waitOnFences() { |
| if (mFrameFences.size()) { |
| ATRACE_CALL(); |
| for (auto& fence : mFrameFences) { |
| fence->getResult(); |
| } |
| mFrameFences.clear(); |
| } |
| } |
| |
| class CanvasContext::FuncTaskProcessor : public TaskProcessor<bool> { |
| public: |
| explicit FuncTaskProcessor(TaskManager* taskManager) : TaskProcessor<bool>(taskManager) {} |
| |
| virtual void onProcess(const sp<Task<bool> >& task) override { |
| FuncTask* t = static_cast<FuncTask*>(task.get()); |
| t->func(); |
| task->setResult(true); |
| } |
| }; |
| |
| void CanvasContext::enqueueFrameWork(std::function<void()>&& func) { |
| if (!mFrameWorkProcessor.get()) { |
| mFrameWorkProcessor = new FuncTaskProcessor(mRenderPipeline->getTaskManager()); |
| } |
| sp<FuncTask> task(new FuncTask()); |
| task->func = func; |
| mFrameFences.push_back(task); |
| mFrameWorkProcessor->add(task); |
| } |
| |
| int64_t CanvasContext::getFrameNumber() { |
| // mFrameNumber is reset to -1 when the surface changes or we swap buffers |
| if (mFrameNumber == -1 && mNativeSurface.get()) { |
| mFrameNumber = static_cast<int64_t>(mNativeSurface->getNextFrameNumber()); |
| } |
| return mFrameNumber; |
| } |
| |
| SkRect CanvasContext::computeDirtyRect(const Frame& frame, SkRect* dirty) { |
| if (frame.width() != mLastFrameWidth || frame.height() != mLastFrameHeight) { |
| // can't rely on prior content of window if viewport size changes |
| dirty->setEmpty(); |
| mLastFrameWidth = frame.width(); |
| mLastFrameHeight = frame.height(); |
| } else if (mHaveNewSurface || frame.bufferAge() == 0) { |
| // New surface needs a full draw |
| dirty->setEmpty(); |
| } else { |
| if (!dirty->isEmpty() && !dirty->intersect(0, 0, frame.width(), frame.height())) { |
| ALOGW("Dirty " RECT_STRING " doesn't intersect with 0 0 %d %d ?", SK_RECT_ARGS(*dirty), |
| frame.width(), frame.height()); |
| dirty->setEmpty(); |
| } |
| profiler().unionDirty(dirty); |
| } |
| |
| if (dirty->isEmpty()) { |
| dirty->set(0, 0, frame.width(), frame.height()); |
| } |
| |
| // At this point dirty is the area of the window to update. However, |
| // the area of the frame we need to repaint is potentially different, so |
| // stash the screen area for later |
| SkRect windowDirty(*dirty); |
| |
| // If the buffer age is 0 we do a full-screen repaint (handled above) |
| // If the buffer age is 1 the buffer contents are the same as they were |
| // last frame so there's nothing to union() against |
| // Therefore we only care about the > 1 case. |
| if (frame.bufferAge() > 1) { |
| if (frame.bufferAge() > (int)mSwapHistory.size()) { |
| // We don't have enough history to handle this old of a buffer |
| // Just do a full-draw |
| dirty->set(0, 0, frame.width(), frame.height()); |
| } else { |
| // At this point we haven't yet added the latest frame |
| // to the damage history (happens below) |
| // So we need to damage |
| for (int i = mSwapHistory.size() - 1; |
| i > ((int)mSwapHistory.size()) - frame.bufferAge(); i--) { |
| dirty->join(mSwapHistory[i].damage); |
| } |
| } |
| } |
| |
| return windowDirty; |
| } |
| |
| } /* namespace renderthread */ |
| } /* namespace uirenderer */ |
| } /* namespace android */ |