CanvasContext.cpp revision e19093cad8e67cf1db98157d0246d0141b19f808
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 freePrefetechedLayers(); 64 destroyHardwareResources(); 65 mAnimationContext->destroy(); 66 if (mCanvas) { 67 delete mCanvas; 68 mCanvas = 0; 69 } 70 setSurface(NULL); 71} 72 73void CanvasContext::setSurface(ANativeWindow* window) { 74 mNativeWindow = window; 75 76 if (mEglSurface != EGL_NO_SURFACE) { 77 mEglManager.destroySurface(mEglSurface); 78 mEglSurface = EGL_NO_SURFACE; 79 } 80 81 if (window) { 82 mEglSurface = mEglManager.createSurface(window); 83 } 84 85 if (mEglSurface != EGL_NO_SURFACE) { 86 const bool preserveBuffer = (mSwapBehavior != kSwap_discardBuffer); 87 mBufferPreserved = mEglManager.setPreserveBuffer(mEglSurface, preserveBuffer); 88 mHaveNewSurface = true; 89 makeCurrent(); 90 } else { 91 mRenderThread.removeFrameCallback(this); 92 } 93} 94 95void CanvasContext::swapBuffers() { 96 if (CC_UNLIKELY(!mEglManager.swapBuffers(mEglSurface))) { 97 setSurface(NULL); 98 } 99 mHaveNewSurface = false; 100} 101 102void CanvasContext::requireSurface() { 103 LOG_ALWAYS_FATAL_IF(mEglSurface == EGL_NO_SURFACE, 104 "requireSurface() called but no surface set!"); 105 makeCurrent(); 106} 107 108void CanvasContext::setSwapBehavior(SwapBehavior swapBehavior) { 109 mSwapBehavior = swapBehavior; 110} 111 112bool CanvasContext::initialize(ANativeWindow* window) { 113 setSurface(window); 114 if (mCanvas) return false; 115 mCanvas = new OpenGLRenderer(mRenderThread.renderState()); 116 mCanvas->initProperties(); 117 return true; 118} 119 120void CanvasContext::updateSurface(ANativeWindow* window) { 121 setSurface(window); 122} 123 124void CanvasContext::pauseSurface(ANativeWindow* window) { 125 stopDrawing(); 126} 127 128// TODO: don't pass viewport size, it's automatic via EGL 129void CanvasContext::setup(int width, int height, const Vector3& lightCenter, float lightRadius, 130 uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha) { 131 if (!mCanvas) return; 132 mCanvas->initLight(lightCenter, lightRadius, ambientShadowAlpha, spotShadowAlpha); 133} 134 135void CanvasContext::setOpaque(bool opaque) { 136 mOpaque = opaque; 137} 138 139void CanvasContext::makeCurrent() { 140 // TODO: Figure out why this workaround is needed, see b/13913604 141 // In the meantime this matches the behavior of GLRenderer, so it is not a regression 142 mHaveNewSurface |= mEglManager.makeCurrent(mEglSurface); 143} 144 145void CanvasContext::processLayerUpdate(DeferredLayerUpdater* layerUpdater) { 146 bool success = layerUpdater->apply(); 147 LOG_ALWAYS_FATAL_IF(!success, "Failed to update layer!"); 148 if (layerUpdater->backingLayer()->deferredUpdateScheduled) { 149 mCanvas->pushLayerUpdate(layerUpdater->backingLayer()); 150 } 151} 152 153void CanvasContext::prepareTree(TreeInfo& info) { 154 mRenderThread.removeFrameCallback(this); 155 156 info.damageAccumulator = &mDamageAccumulator; 157 info.renderer = mCanvas; 158 if (mPrefetechedLayers.size() && info.mode == TreeInfo::MODE_FULL) { 159 info.canvasContext = this; 160 } 161 mAnimationContext->startFrame(info.mode); 162 mRootRenderNode->prepareTree(info); 163 mAnimationContext->runRemainingAnimations(info); 164 165 if (info.canvasContext) { 166 freePrefetechedLayers(); 167 } 168 169 if (CC_UNLIKELY(!mNativeWindow.get())) { 170 info.out.canDrawThisFrame = false; 171 return; 172 } 173 174 int runningBehind = 0; 175 // TODO: This query is moderately expensive, investigate adding some sort 176 // of fast-path based off when we last called eglSwapBuffers() as well as 177 // last vsync time. Or something. 178 mNativeWindow->query(mNativeWindow.get(), 179 NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND, &runningBehind); 180 info.out.canDrawThisFrame = !runningBehind; 181 182 if (info.out.hasAnimations || !info.out.canDrawThisFrame) { 183 if (!info.out.requiresUiRedraw) { 184 // If animationsNeedsRedraw is set don't bother posting for an RT anim 185 // as we will just end up fighting the UI thread. 186 mRenderThread.postFrameCallback(this); 187 } 188 } 189} 190 191void CanvasContext::stopDrawing() { 192 mRenderThread.removeFrameCallback(this); 193} 194 195void CanvasContext::notifyFramePending() { 196 ATRACE_CALL(); 197 mRenderThread.pushBackFrameCallback(this); 198} 199 200void CanvasContext::draw() { 201 LOG_ALWAYS_FATAL_IF(!mCanvas || mEglSurface == EGL_NO_SURFACE, 202 "drawRenderNode called on a context with no canvas or surface!"); 203 204 profiler().markPlaybackStart(); 205 206 SkRect dirty; 207 mDamageAccumulator.finish(&dirty); 208 209 EGLint width, height; 210 mEglManager.beginFrame(mEglSurface, &width, &height); 211 if (width != mCanvas->getViewportWidth() || height != mCanvas->getViewportHeight()) { 212 mCanvas->setViewport(width, height); 213 dirty.setEmpty(); 214 } else if (!mBufferPreserved || mHaveNewSurface) { 215 dirty.setEmpty(); 216 } else { 217 if (!dirty.isEmpty() && !dirty.intersect(0, 0, width, height)) { 218 ALOGW("Dirty " RECT_STRING " doesn't intersect with 0 0 %d %d ?", 219 SK_RECT_ARGS(dirty), width, height); 220 dirty.setEmpty(); 221 } 222 profiler().unionDirty(&dirty); 223 } 224 225 if (!dirty.isEmpty()) { 226 mCanvas->prepareDirty(dirty.fLeft, dirty.fTop, 227 dirty.fRight, dirty.fBottom, mOpaque); 228 } else { 229 mCanvas->prepare(mOpaque); 230 } 231 232 Rect outBounds; 233 mCanvas->drawRenderNode(mRootRenderNode.get(), outBounds); 234 235 profiler().draw(mCanvas); 236 237 bool drew = mCanvas->finish(); 238 239 profiler().markPlaybackEnd(); 240 241 if (drew) { 242 swapBuffers(); 243 } else { 244 mEglManager.cancelFrame(); 245 } 246 247 profiler().finishFrame(); 248} 249 250// Called by choreographer to do an RT-driven animation 251void CanvasContext::doFrame() { 252 if (CC_UNLIKELY(!mCanvas || mEglSurface == EGL_NO_SURFACE)) { 253 return; 254 } 255 256 ATRACE_CALL(); 257 258 profiler().startFrame(); 259 260 TreeInfo info(TreeInfo::MODE_RT_ONLY, mRenderThread.renderState()); 261 prepareTree(info); 262 if (info.out.canDrawThisFrame) { 263 draw(); 264 } 265} 266 267void CanvasContext::invokeFunctor(RenderThread& thread, Functor* functor) { 268 ATRACE_CALL(); 269 DrawGlInfo::Mode mode = DrawGlInfo::kModeProcessNoContext; 270 if (thread.eglManager().hasEglContext()) { 271 thread.eglManager().requireGlContext(); 272 mode = DrawGlInfo::kModeProcess; 273 } 274 275 thread.renderState().invokeFunctor(functor, mode, NULL); 276} 277 278void CanvasContext::markLayerInUse(RenderNode* node) { 279 if (mPrefetechedLayers.erase(node)) { 280 node->decStrong(0); 281 } 282} 283 284static void destroyPrefetechedNode(RenderNode* node) { 285 ALOGW("Incorrectly called buildLayer on View: %s, destroying layer...", node->getName()); 286 node->destroyHardwareResources(); 287 node->decStrong(0); 288} 289 290void CanvasContext::freePrefetechedLayers() { 291 if (mPrefetechedLayers.size()) { 292 requireGlContext(); 293 std::for_each(mPrefetechedLayers.begin(), mPrefetechedLayers.end(), destroyPrefetechedNode); 294 mPrefetechedLayers.clear(); 295 } 296} 297 298void CanvasContext::buildLayer(RenderNode* node) { 299 ATRACE_CALL(); 300 if (!mEglManager.hasEglContext() || !mCanvas) { 301 return; 302 } 303 requireGlContext(); 304 // buildLayer() will leave the tree in an unknown state, so we must stop drawing 305 stopDrawing(); 306 307 TreeInfo info(TreeInfo::MODE_FULL, mRenderThread.renderState()); 308 info.damageAccumulator = &mDamageAccumulator; 309 info.renderer = mCanvas; 310 info.runAnimations = false; 311 node->prepareTree(info); 312 SkRect ignore; 313 mDamageAccumulator.finish(&ignore); 314 // Tickle the GENERIC property on node to mark it as dirty for damaging 315 // purposes when the frame is actually drawn 316 node->setPropertyFieldsDirty(RenderNode::GENERIC); 317 318 mCanvas->markLayersAsBuildLayers(); 319 mCanvas->flushLayerUpdates(); 320 321 node->incStrong(0); 322 mPrefetechedLayers.insert(node); 323} 324 325bool CanvasContext::copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap) { 326 requireGlContext(); 327 layer->apply(); 328 return LayerRenderer::copyLayer(mRenderThread.renderState(), layer->backingLayer(), bitmap); 329} 330 331void CanvasContext::destroyHardwareResources() { 332 stopDrawing(); 333 if (mEglManager.hasEglContext()) { 334 requireGlContext(); 335 freePrefetechedLayers(); 336 mRootRenderNode->destroyHardwareResources(); 337 Caches::getInstance().flush(Caches::kFlushMode_Layers); 338 } 339} 340 341void CanvasContext::trimMemory(RenderThread& thread, int level) { 342 // No context means nothing to free 343 if (!thread.eglManager().hasEglContext()) return; 344 345 ATRACE_CALL(); 346 thread.eglManager().requireGlContext(); 347 if (level >= TRIM_MEMORY_COMPLETE) { 348 Caches::getInstance().flush(Caches::kFlushMode_Full); 349 thread.eglManager().destroy(); 350 } else if (level >= TRIM_MEMORY_UI_HIDDEN) { 351 Caches::getInstance().flush(Caches::kFlushMode_Moderate); 352 } 353} 354 355void CanvasContext::runWithGlContext(RenderTask* task) { 356 requireGlContext(); 357 task->run(); 358} 359 360Layer* CanvasContext::createTextureLayer() { 361 requireSurface(); 362 return LayerRenderer::createTextureLayer(mRenderThread.renderState()); 363} 364 365void CanvasContext::requireGlContext() { 366 mEglManager.requireGlContext(); 367} 368 369void CanvasContext::setTextureAtlas(RenderThread& thread, 370 const sp<GraphicBuffer>& buffer, int64_t* map, size_t mapSize) { 371 thread.eglManager().setTextureAtlas(buffer, map, mapSize); 372} 373 374} /* namespace renderthread */ 375} /* namespace uirenderer */ 376} /* namespace android */ 377