void CanvasContext::prepareTree(TreeInfo& info) {
mRenderThread.removeFrameCallback(this);
info.damageAccumulator = &mDamageAccumulator;
info.renderer = mCanvas;
if (mPrefetechedLayers.size() && info.mode == TreeInfo::MODE_FULL) {
info.canvasContext = this;
}
mAnimationContext->startFrame(info.mode);
mRootRenderNode->prepareTree(info);
mAnimationContext->runRemainingAnimations(info);
if (info.canvasContext) {
freePrefetechedLayers();
}
int runningBehind = 0;
// TODO: This query is moderately expensive, investigate adding some sort
// of fast-path based off when we last called eglSwapBuffers() as well as
// last vsync time. Or something.
mNativeWindow->query(mNativeWindow.get(),
NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND, &runningBehind);
info.out.canDrawThisFrame = !runningBehind;
if (info.out.hasAnimations || !info.out.canDrawThisFrame) {
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::destroyHardwareResources() {
stopDrawing();
if (mEglManager.hasEglContext()) {
requireGlContext();
freePrefetechedLayers();
mRootRenderNode->destroyHardwareResources();
Caches::getInstance().flush(Caches::kFlushMode_Layers);
}
}
void CanvasContext::destroy() {
stopDrawing();
setSurface(NULL);
freePrefetechedLayers();
destroyHardwareResources();
mAnimationContext->destroy();
if (mCanvas) {
delete mCanvas;
mCanvas = 0;
}
}
void CanvasContext::destroyHardwareResources() {
stopDrawing();
if (mEglManager.hasEglContext()) {
freePrefetechedLayers();
mRootRenderNode->destroyHardwareResources();
Caches& caches = Caches::getInstance();
// Make sure to release all the textures we were owning as there won't
// be another draw
caches.textureCache.resetMarkInUse(this);
caches.flush(Caches::kFlushMode_Layers);
}
}
void CanvasContext::prepareTree(TreeInfo& info, int64_t* uiFrameInfo, int64_t syncQueued) {
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 = &mFrames.next();
}
mCurrentFrameInfo->importUiThreadInfo(uiFrameInfo);
mCurrentFrameInfo->set(FrameInfoIndex::SyncQueued) = syncQueued;
mCurrentFrameInfo->markSyncStart();
info.damageAccumulator = &mDamageAccumulator;
info.renderer = mCanvas;
info.canvasContext = this;
mAnimationContext->startFrame(info.mode);
mRootRenderNode->prepareTree(info);
mAnimationContext->runRemainingAnimations(info);
freePrefetechedLayers();
if (CC_UNLIKELY(!mNativeWindow.get())) {
mCurrentFrameInfo->addFlag(FrameInfoFlags::SkippedFrame);
info.out.canDrawThisFrame = false;
return;
}
int runningBehind = 0;
// TODO: This query is moderately expensive, investigate adding some sort
// of fast-path based off when we last called eglSwapBuffers() as well as
// last vsync time. Or something.
mNativeWindow->query(mNativeWindow.get(),
NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND, &runningBehind);
info.out.canDrawThisFrame = !runningBehind;
if (!info.out.canDrawThisFrame) {
mCurrentFrameInfo->addFlag(FrameInfoFlags::SkippedFrame);
}
if (info.out.hasAnimations || !info.out.canDrawThisFrame) {
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);
}
}
}
