CanvasContext.cpp revision a12b2405df5c12363e24cebc684f5f3a5c9a5b7b
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#include "CanvasContext.h" 18 19#include <algorithm> 20#include <private/hwui/DrawGlInfo.h> 21#include <strings.h> 22 23#include "EglManager.h" 24#include "RenderThread.h" 25#include "../AnimationContext.h" 26#include "../Caches.h" 27#include "../DeferredLayerUpdater.h" 28#include "../RenderState.h" 29#include "../LayerRenderer.h" 30#include "../OpenGLRenderer.h" 31#include "../Stencil.h" 32 33#define TRIM_MEMORY_COMPLETE 80 34#define TRIM_MEMORY_UI_HIDDEN 20 35 36namespace android { 37namespace uirenderer { 38namespace renderthread { 39 40CanvasContext::CanvasContext(RenderThread& thread, bool translucent, 41 RenderNode* rootRenderNode, IContextFactory* contextFactory) 42 : mRenderThread(thread) 43 , mEglManager(thread.eglManager()) 44 , mEglSurface(EGL_NO_SURFACE) 45 , mBufferPreserved(false) 46 , mSwapBehavior(kSwap_default) 47 , mOpaque(!translucent) 48 , mCanvas(NULL) 49 , mHaveNewSurface(false) 50 , mRootRenderNode(rootRenderNode) { 51 mAnimationContext = contextFactory->createAnimationContext(mRenderThread.timeLord()); 52 mRenderThread.renderState().registerCanvasContext(this); 53} 54 55CanvasContext::~CanvasContext() { 56 destroy(); 57 delete mAnimationContext; 58 mRenderThread.renderState().unregisterCanvasContext(this); 59} 60 61void CanvasContext::destroy() { 62 stopDrawing(); 63 setSurface(NULL); 64 freePrefetechedLayers(); 65 destroyHardwareResources(); 66 mAnimationContext->destroy(); 67 if (mCanvas) { 68 delete mCanvas; 69 mCanvas = 0; 70 } 71} 72 73void CanvasContext::setSurface(ANativeWindow* window) { 74 ATRACE_CALL(); 75 76 mNativeWindow = window; 77 78 if (mEglSurface != EGL_NO_SURFACE) { 79 mEglManager.destroySurface(mEglSurface); 80 mEglSurface = EGL_NO_SURFACE; 81 } 82 83 if (window) { 84 mEglSurface = mEglManager.createSurface(window); 85 } 86 87 if (mEglSurface != EGL_NO_SURFACE) { 88 const bool preserveBuffer = (mSwapBehavior != kSwap_discardBuffer); 89 mBufferPreserved = mEglManager.setPreserveBuffer(mEglSurface, preserveBuffer); 90 mHaveNewSurface = true; 91 makeCurrent(); 92 } else { 93 mRenderThread.removeFrameCallback(this); 94 } 95} 96 97void CanvasContext::swapBuffers() { 98 if (CC_UNLIKELY(!mEglManager.swapBuffers(mEglSurface))) { 99 setSurface(NULL); 100 } 101 mHaveNewSurface = false; 102} 103 104void CanvasContext::requireSurface() { 105 LOG_ALWAYS_FATAL_IF(mEglSurface == EGL_NO_SURFACE, 106 "requireSurface() called but no surface set!"); 107 makeCurrent(); 108} 109 110void CanvasContext::setSwapBehavior(SwapBehavior swapBehavior) { 111 mSwapBehavior = swapBehavior; 112} 113 114bool CanvasContext::initialize(ANativeWindow* window) { 115 setSurface(window); 116 if (mCanvas) return false; 117 mCanvas = new OpenGLRenderer(mRenderThread.renderState()); 118 mCanvas->initProperties(); 119 return true; 120} 121 122void CanvasContext::updateSurface(ANativeWindow* window) { 123 setSurface(window); 124} 125 126void CanvasContext::pauseSurface(ANativeWindow* window) { 127 stopDrawing(); 128} 129 130// TODO: don't pass viewport size, it's automatic via EGL 131void CanvasContext::setup(int width, int height, const Vector3& lightCenter, float lightRadius, 132 uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha) { 133 if (!mCanvas) return; 134 mCanvas->initLight(lightCenter, lightRadius, ambientShadowAlpha, spotShadowAlpha); 135} 136 137void CanvasContext::setOpaque(bool opaque) { 138 mOpaque = opaque; 139} 140 141void CanvasContext::makeCurrent() { 142 // TODO: Figure out why this workaround is needed, see b/13913604 143 // In the meantime this matches the behavior of GLRenderer, so it is not a regression 144 mHaveNewSurface |= mEglManager.makeCurrent(mEglSurface); 145} 146 147void CanvasContext::processLayerUpdate(DeferredLayerUpdater* layerUpdater) { 148 bool success = layerUpdater->apply(); 149 LOG_ALWAYS_FATAL_IF(!success, "Failed to update layer!"); 150 if (layerUpdater->backingLayer()->deferredUpdateScheduled) { 151 mCanvas->pushLayerUpdate(layerUpdater->backingLayer()); 152 } 153} 154 155void CanvasContext::prepareTree(TreeInfo& info) { 156 mRenderThread.removeFrameCallback(this); 157 158 info.damageAccumulator = &mDamageAccumulator; 159 info.renderer = mCanvas; 160 if (mPrefetechedLayers.size() && info.mode == TreeInfo::MODE_FULL) { 161 info.canvasContext = this; 162 } 163 mAnimationContext->startFrame(info.mode); 164 mRootRenderNode->prepareTree(info); 165 mAnimationContext->runRemainingAnimations(info); 166 167 if (info.canvasContext) { 168 freePrefetechedLayers(); 169 } 170 171 if (CC_UNLIKELY(!mNativeWindow.get())) { 172 info.out.canDrawThisFrame = false; 173 return; 174 } 175 176 int runningBehind = 0; 177 // TODO: This query is moderately expensive, investigate adding some sort 178 // of fast-path based off when we last called eglSwapBuffers() as well as 179 // last vsync time. Or something. 180 mNativeWindow->query(mNativeWindow.get(), 181 NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND, &runningBehind); 182 info.out.canDrawThisFrame = !runningBehind; 183 184 if (info.out.hasAnimations || !info.out.canDrawThisFrame) { 185 if (!info.out.requiresUiRedraw) { 186 // If animationsNeedsRedraw is set don't bother posting for an RT anim 187 // as we will just end up fighting the UI thread. 188 mRenderThread.postFrameCallback(this); 189 } 190 } 191} 192 193void CanvasContext::stopDrawing() { 194 mRenderThread.removeFrameCallback(this); 195} 196 197void CanvasContext::notifyFramePending() { 198 ATRACE_CALL(); 199 mRenderThread.pushBackFrameCallback(this); 200} 201 202void CanvasContext::draw() { 203 LOG_ALWAYS_FATAL_IF(!mCanvas || mEglSurface == EGL_NO_SURFACE, 204 "drawRenderNode called on a context with no canvas or surface!"); 205 206 profiler().markPlaybackStart(); 207 208 SkRect dirty; 209 mDamageAccumulator.finish(&dirty); 210 211 EGLint width, height; 212 mEglManager.beginFrame(mEglSurface, &width, &height); 213 if (width != mCanvas->getViewportWidth() || height != mCanvas->getViewportHeight()) { 214 mCanvas->setViewport(width, height); 215 dirty.setEmpty(); 216 } else if (!mBufferPreserved || mHaveNewSurface) { 217 dirty.setEmpty(); 218 } else { 219 if (!dirty.isEmpty() && !dirty.intersect(0, 0, width, height)) { 220 ALOGW("Dirty " RECT_STRING " doesn't intersect with 0 0 %d %d ?", 221 SK_RECT_ARGS(dirty), width, height); 222 dirty.setEmpty(); 223 } 224 profiler().unionDirty(&dirty); 225 } 226 227 status_t status; 228 if (!dirty.isEmpty()) { 229 status = mCanvas->prepareDirty(dirty.fLeft, dirty.fTop, 230 dirty.fRight, dirty.fBottom, mOpaque); 231 } else { 232 status = mCanvas->prepare(mOpaque); 233 } 234 235 Rect outBounds; 236 status |= mCanvas->drawRenderNode(mRootRenderNode.get(), outBounds); 237 238 profiler().draw(mCanvas); 239 240 mCanvas->finish(); 241 242 profiler().markPlaybackEnd(); 243 244 if (status & DrawGlInfo::kStatusDrew) { 245 swapBuffers(); 246 } else { 247 mEglManager.cancelFrame(); 248 } 249 250 profiler().finishFrame(); 251} 252 253// Called by choreographer to do an RT-driven animation 254void CanvasContext::doFrame() { 255 if (CC_UNLIKELY(!mCanvas || mEglSurface == EGL_NO_SURFACE)) { 256 return; 257 } 258 259 ATRACE_CALL(); 260 261 profiler().startFrame(); 262 263 TreeInfo info(TreeInfo::MODE_RT_ONLY, mRenderThread.renderState()); 264 prepareTree(info); 265 if (info.out.canDrawThisFrame) { 266 draw(); 267 } 268} 269 270void CanvasContext::invokeFunctor(RenderThread& thread, Functor* functor) { 271 ATRACE_CALL(); 272 DrawGlInfo::Mode mode = DrawGlInfo::kModeProcessNoContext; 273 if (thread.eglManager().hasEglContext()) { 274 thread.eglManager().requireGlContext(); 275 mode = DrawGlInfo::kModeProcess; 276 } 277 278 thread.renderState().invokeFunctor(functor, mode, NULL); 279} 280 281void CanvasContext::markLayerInUse(RenderNode* node) { 282 if (mPrefetechedLayers.erase(node)) { 283 node->decStrong(0); 284 } 285} 286 287static void destroyPrefetechedNode(RenderNode* node) { 288 ALOGW("Incorrectly called buildLayer on View: %s, destroying layer...", node->getName()); 289 node->destroyHardwareResources(); 290 node->decStrong(0); 291} 292 293void CanvasContext::freePrefetechedLayers() { 294 if (mPrefetechedLayers.size()) { 295 requireGlContext(); 296 std::for_each(mPrefetechedLayers.begin(), mPrefetechedLayers.end(), destroyPrefetechedNode); 297 mPrefetechedLayers.clear(); 298 } 299} 300 301void CanvasContext::buildLayer(RenderNode* node) { 302 ATRACE_CALL(); 303 if (!mEglManager.hasEglContext() || !mCanvas) { 304 return; 305 } 306 requireGlContext(); 307 // buildLayer() will leave the tree in an unknown state, so we must stop drawing 308 stopDrawing(); 309 310 TreeInfo info(TreeInfo::MODE_FULL, mRenderThread.renderState()); 311 info.damageAccumulator = &mDamageAccumulator; 312 info.renderer = mCanvas; 313 info.runAnimations = false; 314 node->prepareTree(info); 315 SkRect ignore; 316 mDamageAccumulator.finish(&ignore); 317 // Tickle the GENERIC property on node to mark it as dirty for damaging 318 // purposes when the frame is actually drawn 319 node->setPropertyFieldsDirty(RenderNode::GENERIC); 320 321 mCanvas->markLayersAsBuildLayers(); 322 mCanvas->flushLayerUpdates(); 323 324 node->incStrong(0); 325 mPrefetechedLayers.insert(node); 326} 327 328bool CanvasContext::copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap) { 329 requireGlContext(); 330 layer->apply(); 331 return LayerRenderer::copyLayer(mRenderThread.renderState(), layer->backingLayer(), bitmap); 332} 333 334void CanvasContext::destroyHardwareResources() { 335 stopDrawing(); 336 if (mEglManager.hasEglContext()) { 337 requireGlContext(); 338 freePrefetechedLayers(); 339 mRootRenderNode->destroyHardwareResources(); 340 Caches::getInstance().flush(Caches::kFlushMode_Layers); 341 } 342} 343 344void CanvasContext::trimMemory(RenderThread& thread, int level) { 345 // No context means nothing to free 346 if (!thread.eglManager().hasEglContext()) return; 347 348 ATRACE_CALL(); 349 thread.eglManager().requireGlContext(); 350 if (level >= TRIM_MEMORY_COMPLETE) { 351 Caches::getInstance().flush(Caches::kFlushMode_Full); 352 thread.eglManager().destroy(); 353 } else if (level >= TRIM_MEMORY_UI_HIDDEN) { 354 Caches::getInstance().flush(Caches::kFlushMode_Moderate); 355 } 356} 357 358void CanvasContext::runWithGlContext(RenderTask* task) { 359 requireGlContext(); 360 task->run(); 361} 362 363Layer* CanvasContext::createTextureLayer() { 364 requireSurface(); 365 return LayerRenderer::createTextureLayer(mRenderThread.renderState()); 366} 367 368void CanvasContext::requireGlContext() { 369 mEglManager.requireGlContext(); 370} 371 372void CanvasContext::setTextureAtlas(RenderThread& thread, 373 const sp<GraphicBuffer>& buffer, int64_t* map, size_t mapSize) { 374 thread.eglManager().setTextureAtlas(buffer, map, mapSize); 375} 376 377} /* namespace renderthread */ 378} /* namespace uirenderer */ 379} /* namespace android */ 380