7bb70faa04
As HWUI uses vsync id to send buffers to SF, SF applies the right amount of render ahead by latching the buffers at the configured time. Test: launch an app and observe systrace Bug: 178148035 Change-Id: Ifd3e1a2971aad0a085cb35d33e950194046aa634
109 lines
3.9 KiB
C++
109 lines
3.9 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef DEVICEINFO_H
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#define DEVICEINFO_H
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#include <SkImageInfo.h>
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#include <android/data_space.h>
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#include <mutex>
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#include "utils/Macros.h"
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namespace android {
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namespace uirenderer {
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namespace renderthread {
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class RenderThread;
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}
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class DeviceInfo {
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PREVENT_COPY_AND_ASSIGN(DeviceInfo);
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public:
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static DeviceInfo* get();
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static int32_t getWidth() { return get()->mWidth; }
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static int32_t getHeight() { return get()->mHeight; }
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// Gets the density in density-independent pixels
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static float getDensity() { return sDensity.load(); }
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static int64_t getVsyncPeriod() { return get()->mVsyncPeriod; }
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static int64_t getCompositorOffset() { return get()->getCompositorOffsetInternal(); }
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static int64_t getAppOffset() { return get()->mAppVsyncOffsetNanos; }
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// Sets the density in density-independent pixels
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static void setDensity(float density) { sDensity.store(density); }
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static void setWidth(int32_t width) { get()->mWidth = width; }
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static void setHeight(int32_t height) { get()->mHeight = height; }
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static void setRefreshRate(float refreshRate) {
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get()->mVsyncPeriod = static_cast<int64_t>(1000000000 / refreshRate);
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}
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static void setPresentationDeadlineNanos(int64_t deadlineNanos) {
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get()->mPresentationDeadlineNanos = deadlineNanos;
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}
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static void setAppVsyncOffsetNanos(int64_t offsetNanos) {
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get()->mAppVsyncOffsetNanos = offsetNanos;
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}
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static void setWideColorDataspace(ADataSpace dataspace);
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// this value is only valid after the GPU has been initialized and there is a valid graphics
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// context or if you are using the HWUI_NULL_GPU
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int maxTextureSize() const;
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sk_sp<SkColorSpace> getWideColorSpace() const { return mWideColorSpace; }
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SkColorType getWideColorType() {
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static std::once_flag kFlag;
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// lazily update display info from SF here, so that the call is performed by RenderThread.
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std::call_once(kFlag, [&, this]() { updateDisplayInfo(); });
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return mWideColorType;
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}
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// This method should be called whenever the display refresh rate changes.
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void onRefreshRateChanged(int64_t vsyncPeriod);
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private:
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friend class renderthread::RenderThread;
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static void setMaxTextureSize(int maxTextureSize);
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void updateDisplayInfo();
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int64_t getCompositorOffsetInternal() const {
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// Assume that SF takes around a millisecond to latch buffers after
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// waking up
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return mVsyncPeriod - (mPresentationDeadlineNanos - 1000000);
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}
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DeviceInfo();
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~DeviceInfo() = default;
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int mMaxTextureSize;
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sk_sp<SkColorSpace> mWideColorSpace = SkColorSpace::MakeSRGB();
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SkColorType mWideColorType = SkColorType::kN32_SkColorType;
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int mDisplaysSize = 0;
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int mPhysicalDisplayIndex = -1;
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int32_t mWidth = 1080;
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int32_t mHeight = 1920;
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int64_t mVsyncPeriod = 16666666;
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// Magically corresponds with an sf offset of 0 for a sane default.
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int64_t mPresentationDeadlineNanos = 17666666;
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int64_t mAppVsyncOffsetNanos = 0;
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// Density is not retrieved from the ADisplay apis, so this may potentially
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// be called on multiple threads.
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// Unit is density-independent pixels
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static std::atomic<float> sDensity;
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};
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} /* namespace uirenderer */
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} /* namespace android */
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#endif /* DEVICEINFO_H */
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