SkiaOpenGLPipeline.cpp revision 576b6a8a7994f649c0dbacfc34611d1580e16bd6 
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 "SkiaOpenGLPipeline.h"
18
19#include "DeferredLayerUpdater.h"
20#include "GlLayer.h"
21#include "LayerDrawable.h"
22#include "renderthread/EglManager.h"
23#include "renderthread/Frame.h"
24#include "renderstate/RenderState.h"
25#include "SkiaPipeline.h"
26#include "SkiaProfileRenderer.h"
27#include "utils/TraceUtils.h"
28
29#include <cutils/properties.h>
30#include <strings.h>
31
32using namespace android::uirenderer::renderthread;
33
34namespace android {
35namespace uirenderer {
36namespace skiapipeline {
37
38SkiaOpenGLPipeline::SkiaOpenGLPipeline(RenderThread& thread)
39        : SkiaPipeline(thread)
40        , mEglManager(thread.eglManager()) {
41}
42
43MakeCurrentResult SkiaOpenGLPipeline::makeCurrent() {
44    // TODO: Figure out why this workaround is needed, see b/13913604
45    // In the meantime this matches the behavior of GLRenderer, so it is not a regression
46    EGLint error = 0;
47    if (!mEglManager.makeCurrent(mEglSurface, &error)) {
48        return MakeCurrentResult::AlreadyCurrent;
49    }
50    return error ? MakeCurrentResult::Failed : MakeCurrentResult::Succeeded;
51}
52
53Frame SkiaOpenGLPipeline::getFrame() {
54    LOG_ALWAYS_FATAL_IF(mEglSurface == EGL_NO_SURFACE,
55                "drawRenderNode called on a context with no surface!");
56    return mEglManager.beginFrame(mEglSurface);
57}
58
59bool SkiaOpenGLPipeline::draw(const Frame& frame, const SkRect& screenDirty,
60        const SkRect& dirty,
61        const FrameBuilder::LightGeometry& lightGeometry,
62        LayerUpdateQueue* layerUpdateQueue,
63        const Rect& contentDrawBounds, bool opaque,
64        const BakedOpRenderer::LightInfo& lightInfo,
65        const std::vector<sp<RenderNode>>& renderNodes,
66        FrameInfoVisualizer* profiler) {
67
68    mEglManager.damageFrame(frame, dirty);
69
70    // setup surface for fbo0
71    GrBackendRenderTargetDesc renderTargetDesc;
72    renderTargetDesc.fWidth = frame.width();
73    renderTargetDesc.fHeight = frame.height();
74    renderTargetDesc.fConfig = kRGBA_8888_GrPixelConfig;
75    renderTargetDesc.fOrigin = kBottomLeft_GrSurfaceOrigin;
76    renderTargetDesc.fSampleCnt = 0;
77    renderTargetDesc.fStencilBits = STENCIL_BUFFER_SIZE;
78    renderTargetDesc.fRenderTargetHandle = 0;
79
80    SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
81
82    SkASSERT(mRenderThread.getGrContext() != nullptr);
83    sk_sp<SkSurface> surface(SkSurface::MakeFromBackendRenderTarget(
84            mRenderThread.getGrContext(), renderTargetDesc, &props));
85
86    SkiaPipeline::updateLighting(lightGeometry, lightInfo);
87    renderFrame(*layerUpdateQueue, dirty, renderNodes, opaque, contentDrawBounds, surface);
88    layerUpdateQueue->clear();
89
90    // Draw visual debugging features
91    if (CC_UNLIKELY(Properties::showDirtyRegions
92            || ProfileType::None != Properties::getProfileType())) {
93        SkCanvas* profileCanvas = surface->getCanvas();
94        SkiaProfileRenderer profileRenderer(profileCanvas);
95        profiler->draw(profileRenderer);
96        profileCanvas->flush();
97    }
98
99    // Log memory statistics
100    if (CC_UNLIKELY(Properties::debugLevel != kDebugDisabled)) {
101        dumpResourceCacheUsage();
102    }
103
104    return true;
105}
106
107bool SkiaOpenGLPipeline::swapBuffers(const Frame& frame, bool drew,
108        const SkRect& screenDirty, FrameInfo* currentFrameInfo, bool* requireSwap) {
109
110    GL_CHECKPOINT(LOW);
111
112    // Even if we decided to cancel the frame, from the perspective of jank
113    // metrics the frame was swapped at this point
114    currentFrameInfo->markSwapBuffers();
115
116    *requireSwap = drew || mEglManager.damageRequiresSwap();
117
118    if (*requireSwap && (CC_UNLIKELY(!mEglManager.swapBuffers(frame, screenDirty)))) {
119        return false;
120    }
121
122    return *requireSwap;
123}
124
125bool SkiaOpenGLPipeline::copyLayerInto(DeferredLayerUpdater* deferredLayer, SkBitmap* bitmap) {
126    if (!mRenderThread.getGrContext()) {
127        return false;
128    }
129
130    // acquire most recent buffer for drawing
131    deferredLayer->updateTexImage();
132    deferredLayer->apply();
133
134    SkCanvas canvas(*bitmap);
135    Layer* layer = deferredLayer->backingLayer();
136    return LayerDrawable::DrawLayer(mRenderThread.getGrContext(), &canvas, layer);
137}
138
139static Layer* createLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight,
140        SkColorFilter* colorFilter, int alpha, SkBlendMode mode, bool blend) {
141    GlLayer* layer = new GlLayer(renderState, layerWidth, layerHeight, colorFilter, alpha,
142            mode, blend);
143    layer->generateTexture();
144    return layer;
145}
146
147DeferredLayerUpdater* SkiaOpenGLPipeline::createTextureLayer() {
148    mEglManager.initialize();
149    return new DeferredLayerUpdater(mRenderThread.renderState(), createLayer, Layer::Api::OpenGL);
150}
151
152void SkiaOpenGLPipeline::onStop() {
153    if (mEglManager.isCurrent(mEglSurface)) {
154        mEglManager.makeCurrent(EGL_NO_SURFACE);
155    }
156}
157
158bool SkiaOpenGLPipeline::setSurface(Surface* surface, SwapBehavior swapBehavior) {
159
160    if (mEglSurface != EGL_NO_SURFACE) {
161        mEglManager.destroySurface(mEglSurface);
162        mEglSurface = EGL_NO_SURFACE;
163    }
164
165    if (surface) {
166        mEglSurface = mEglManager.createSurface(surface);
167    }
168
169    if (mEglSurface != EGL_NO_SURFACE) {
170        const bool preserveBuffer = (swapBehavior != SwapBehavior::kSwap_discardBuffer);
171        mBufferPreserved = mEglManager.setPreserveBuffer(mEglSurface, preserveBuffer);
172        return true;
173    }
174
175    return false;
176}
177
178bool SkiaOpenGLPipeline::isSurfaceReady() {
179    return CC_UNLIKELY(mEglSurface != EGL_NO_SURFACE);
180}
181
182bool SkiaOpenGLPipeline::isContextReady() {
183    return CC_LIKELY(mEglManager.hasEglContext());
184}
185
186void SkiaOpenGLPipeline::invokeFunctor(const RenderThread& thread, Functor* functor) {
187    DrawGlInfo::Mode mode = DrawGlInfo::kModeProcessNoContext;
188    if (thread.eglManager().hasEglContext()) {
189        mode = DrawGlInfo::kModeProcess;
190    }
191
192    (*functor)(mode, nullptr);
193
194    // If there's no context we don't need to reset as there's no gl state to save/restore
195    if (mode != DrawGlInfo::kModeProcessNoContext) {
196        thread.getGrContext()->resetContext();
197    }
198}
199
200} /* namespace skiapipeline */
201} /* namespace uirenderer */
202} /* namespace android */
203