SkiaDisplayList.cpp revision b7d34b64dd32e3d84bd43344c9c3d9ad098129af 
1/*
2 * Copyright (C) 2016 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 "SkiaDisplayList.h"
18
19#include "renderthread/CanvasContext.h"
20#include "VectorDrawable.h"
21
22#include <SkImagePriv.h>
23
24
25namespace android {
26namespace uirenderer {
27namespace skiapipeline {
28
29SkiaDisplayList::SkiaDisplayList(SkRect bounds) : mDrawable(SkLiteDL::New(bounds)) {
30    SkASSERT(projectionReceiveIndex == -1);
31}
32
33void SkiaDisplayList::syncContents() {
34    for (auto& functor : mChildFunctors) {
35        functor.syncFunctor();
36    }
37    for (auto& vectorDrawable : mVectorDrawables) {
38        vectorDrawable->syncProperties();
39    }
40}
41
42bool SkiaDisplayList::reuseDisplayList(RenderNode* node, renderthread::CanvasContext* context) {
43    reset(SkRect::MakeEmpty());
44    node->attachAvailableList(this);
45    return true;
46}
47
48void SkiaDisplayList::updateChildren(std::function<void(RenderNode*)> updateFn) {
49    for (auto& child : mChildNodes) {
50        updateFn(child.getRenderNode());
51    }
52}
53
54bool SkiaDisplayList::prepareListAndChildren(TreeInfo& info, bool functorsNeedLayer,
55        std::function<void(RenderNode*, TreeInfo&, bool)> childFn) {
56    // If the prepare tree is triggered by the UI thread then we must force all
57    // mutable images to be pinned in the GPU cache until the next UI thread
58    // draw
59    if (info.mode == TreeInfo::MODE_FULL) {
60        info.prepareTextures = info.canvasContext.pinImages(mMutableImages);
61    }
62
63    for (auto& child : mChildNodes) {
64        RenderNode* childNode = child.getRenderNode();
65        Matrix4 mat4(child.getRecordedMatrix());
66        info.damageAccumulator->pushTransform(&mat4);
67        // TODO: a layer is needed if the canvas is rotated or has a non-rect clip
68        bool childFunctorsNeedLayer = functorsNeedLayer;
69        childFn(childNode, info, childFunctorsNeedLayer);
70        info.damageAccumulator->popTransform();
71    }
72
73    bool isDirty = false;
74    for (auto& vectorDrawable : mVectorDrawables) {
75        // If any vector drawable in the display list needs update, damage the node.
76        if (vectorDrawable->isDirty()) {
77            isDirty = true;
78        }
79        vectorDrawable->setPropertyChangeWillBeConsumed(true);
80    }
81    return isDirty;
82}
83
84void SkiaDisplayList::reset(SkRect bounds) {
85    mIsProjectionReceiver = false;
86
87    mDrawable->reset(bounds);
88
89    mMutableImages.clear();
90    mVectorDrawables.clear();
91    mChildFunctors.clear();
92    mChildNodes.clear();
93
94    projectionReceiveIndex = -1;
95    allocator.~LinearAllocator();
96    new (&allocator) LinearAllocator();
97}
98
99}; // namespace skiapipeline
100}; // namespace uirenderer
101}; // namespace android
102