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/*
* 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 <algorithm>
#include <private/hwui/DrawGlInfo.h>
#include <strings.h>
#include "EglManager.h"
#include "RenderThread.h"
#include "../AnimationContext.h"
#include "../Caches.h"
#include "../DeferredLayerUpdater.h"
#include "../RenderState.h"
#include "../LayerRenderer.h"
#include "../OpenGLRenderer.h"
#include "../Stencil.h"
#define TRIM_MEMORY_COMPLETE 80
#define TRIM_MEMORY_UI_HIDDEN 20
namespace android {
namespace uirenderer {
namespace renderthread {
CanvasContext::CanvasContext(RenderThread& thread, bool translucent,
RenderNode* rootRenderNode, IContextFactory* contextFactory)
: mRenderThread(thread)
, mEglManager(thread.eglManager())
, mEglSurface(EGL_NO_SURFACE)
, mBufferPreserved(false)
, mSwapBehavior(kSwap_default)
, mOpaque(!translucent)
, mCanvas(NULL)
, mHaveNewSurface(false)
, mRootRenderNode(rootRenderNode) {
mAnimationContext = contextFactory->createAnimationContext(mRenderThread.timeLord());
mRenderThread.renderState().registerCanvasContext(this);
}
CanvasContext::~CanvasContext() {
destroy();
delete mAnimationContext;
mRenderThread.renderState().unregisterCanvasContext(this);
}
void CanvasContext::destroy() {
stopDrawing();
setSurface(NULL);
freePrefetechedLayers();
destroyHardwareResources();
mAnimationContext->destroy();
if (mCanvas) {
delete mCanvas;
mCanvas = 0;
}
}
void CanvasContext::setSurface(ANativeWindow* window) {
ATRACE_CALL();
mNativeWindow = window;
if (mEglSurface != EGL_NO_SURFACE) {
mEglManager.destroySurface(mEglSurface);
mEglSurface = EGL_NO_SURFACE;
}
if (window) {
mEglSurface = mEglManager.createSurface(window);
}
if (mEglSurface != EGL_NO_SURFACE) {
const bool preserveBuffer = (mSwapBehavior != kSwap_discardBuffer);
mBufferPreserved = mEglManager.setPreserveBuffer(mEglSurface, preserveBuffer);
mHaveNewSurface = true;
makeCurrent();
} else {
mRenderThread.removeFrameCallback(this);
}
}
void CanvasContext::swapBuffers() {
if (CC_UNLIKELY(!mEglManager.swapBuffers(mEglSurface))) {
setSurface(NULL);
}
mHaveNewSurface = false;
}
void CanvasContext::requireSurface() {
LOG_ALWAYS_FATAL_IF(mEglSurface == EGL_NO_SURFACE,
"requireSurface() called but no surface set!");
makeCurrent();
}
void CanvasContext::setSwapBehavior(SwapBehavior swapBehavior) {
mSwapBehavior = swapBehavior;
}
bool CanvasContext::initialize(ANativeWindow* window) {
setSurface(window);
if (mCanvas) return false;
mCanvas = new OpenGLRenderer(mRenderThread.renderState());
mCanvas->initProperties();
return true;
}
void CanvasContext::updateSurface(ANativeWindow* window) {
setSurface(window);
}
bool CanvasContext::pauseSurface(ANativeWindow* window) {
return mRenderThread.removeFrameCallback(this);
}
// TODO: don't pass viewport size, it's automatic via EGL
void CanvasContext::setup(int width, int height, const Vector3& lightCenter,
float lightRadius, uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha) {
if (!mCanvas) return;
mCanvas->initLight(lightCenter, lightRadius, ambientShadowAlpha, spotShadowAlpha);
}
void CanvasContext::setOpaque(bool opaque) {
mOpaque = opaque;
}
void CanvasContext::makeCurrent() {
// TODO: Figure out why this workaround is needed, see b/13913604
// In the meantime this matches the behavior of GLRenderer, so it is not a regression
mHaveNewSurface |= mEglManager.makeCurrent(mEglSurface);
}
void CanvasContext::processLayerUpdate(DeferredLayerUpdater* layerUpdater) {
bool success = layerUpdater->apply();
LOG_ALWAYS_FATAL_IF(!success, "Failed to update layer!");
if (layerUpdater->backingLayer()->deferredUpdateScheduled) {
mCanvas->pushLayerUpdate(layerUpdater->backingLayer());
}
}
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();
}
if (CC_UNLIKELY(!mNativeWindow.get())) {
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.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::stopDrawing() {
mRenderThread.removeFrameCallback(this);
}
void CanvasContext::notifyFramePending() {
ATRACE_CALL();
mRenderThread.pushBackFrameCallback(this);
}
void CanvasContext::draw() {
LOG_ALWAYS_FATAL_IF(!mCanvas || mEglSurface == EGL_NO_SURFACE,
"drawRenderNode called on a context with no canvas or surface!");
profiler().markPlaybackStart();
SkRect dirty;
mDamageAccumulator.finish(&dirty);
EGLint width, height;
mEglManager.beginFrame(mEglSurface, &width, &height);
if (width != mCanvas->getViewportWidth() || height != mCanvas->getViewportHeight()) {
mCanvas->setViewport(width, height);
dirty.setEmpty();
} else if (!mBufferPreserved || mHaveNewSurface) {
dirty.setEmpty();
} else {
if (!dirty.isEmpty() && !dirty.intersect(0, 0, width, height)) {
ALOGW("Dirty " RECT_STRING " doesn't intersect with 0 0 %d %d ?",
SK_RECT_ARGS(dirty), width, height);
dirty.setEmpty();
}
profiler().unionDirty(&dirty);
}
status_t status;
if (!dirty.isEmpty()) {
status = mCanvas->prepareDirty(dirty.fLeft, dirty.fTop,
dirty.fRight, dirty.fBottom, mOpaque);
} else {
status = mCanvas->prepare(mOpaque);
}
Rect outBounds;
status |= mCanvas->drawRenderNode(mRootRenderNode.get(), outBounds);
profiler().draw(mCanvas);
mCanvas->finish();
profiler().markPlaybackEnd();
if (status & DrawGlInfo::kStatusDrew) {
swapBuffers();
} else {
mEglManager.cancelFrame();
}
profiler().finishFrame();
}
// Called by choreographer to do an RT-driven animation
void CanvasContext::doFrame() {
if (CC_UNLIKELY(!mCanvas || mEglSurface == EGL_NO_SURFACE)) {
return;
}
ATRACE_CALL();
profiler().startFrame();
TreeInfo info(TreeInfo::MODE_RT_ONLY, mRenderThread.renderState());
prepareTree(info);
if (info.out.canDrawThisFrame) {
draw();
}
}
void CanvasContext::invokeFunctor(RenderThread& thread, Functor* functor) {
ATRACE_CALL();
DrawGlInfo::Mode mode = DrawGlInfo::kModeProcessNoContext;
if (thread.eglManager().hasEglContext()) {
thread.eglManager().requireGlContext();
mode = DrawGlInfo::kModeProcess;
}
thread.renderState().invokeFunctor(functor, mode, NULL);
}
void CanvasContext::markLayerInUse(RenderNode* node) {
if (mPrefetechedLayers.erase(node)) {
node->decStrong(0);
}
}
static void destroyPrefetechedNode(RenderNode* node) {
ALOGW("Incorrectly called buildLayer on View: %s, destroying layer...", node->getName());
node->destroyHardwareResources();
node->decStrong(0);
}
void CanvasContext::freePrefetechedLayers() {
if (mPrefetechedLayers.size()) {
requireGlContext();
std::for_each(mPrefetechedLayers.begin(), mPrefetechedLayers.end(), destroyPrefetechedNode);
mPrefetechedLayers.clear();
}
}
void CanvasContext::buildLayer(RenderNode* node) {
ATRACE_CALL();
if (!mEglManager.hasEglContext() || !mCanvas) {
return;
}
requireGlContext();
// buildLayer() will leave the tree in an unknown state, so we must stop drawing
stopDrawing();
TreeInfo info(TreeInfo::MODE_FULL, mRenderThread.renderState());
info.damageAccumulator = &mDamageAccumulator;
info.renderer = mCanvas;
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);
mCanvas->markLayersAsBuildLayers();
mCanvas->flushLayerUpdates();
node->incStrong(0);
mPrefetechedLayers.insert(node);
}
bool CanvasContext::copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap) {
requireGlContext();
layer->apply();
return LayerRenderer::copyLayer(mRenderThread.renderState(), layer->backingLayer(), bitmap);
}
void CanvasContext::destroyHardwareResources() {
stopDrawing();
if (mEglManager.hasEglContext()) {
requireGlContext();
freePrefetechedLayers();
mRootRenderNode->destroyHardwareResources();
Caches::getInstance().flush(Caches::kFlushMode_Layers);
}
}
void CanvasContext::trimMemory(RenderThread& thread, int level) {
// No context means nothing to free
if (!thread.eglManager().hasEglContext()) return;
ATRACE_CALL();
thread.eglManager().requireGlContext();
if (level >= TRIM_MEMORY_COMPLETE) {
Caches::getInstance().flush(Caches::kFlushMode_Full);
thread.eglManager().destroy();
} else if (level >= TRIM_MEMORY_UI_HIDDEN) {
Caches::getInstance().flush(Caches::kFlushMode_Moderate);
}
}
void CanvasContext::runWithGlContext(RenderTask* task) {
requireGlContext();
task->run();
}
Layer* CanvasContext::createTextureLayer() {
requireSurface();
return LayerRenderer::createTextureLayer(mRenderThread.renderState());
}
void CanvasContext::requireGlContext() {
mEglManager.requireGlContext();
}
void CanvasContext::setTextureAtlas(RenderThread& thread,
const sp<GraphicBuffer>& buffer, int64_t* map, size_t mapSize) {
thread.eglManager().setTextureAtlas(buffer, map, mapSize);
}
} /* namespace renderthread */
} /* namespace uirenderer */
} /* namespace android */