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Commit f2a54b6a authored by TreeHugger Robot's avatar TreeHugger Robot Committed by Android (Google) Code Review
Browse files

Merge "Load EGL early in Activity launch, instead of in Zygote" into nyc-mr2-dev

parents c281fd12 fd104e7f

core/java/android/os/GraphicsEnvironment.java

+18 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ package android.os; 
import android.content.Context;

import android.content.pm.ApplicationInfo;

import android.content.pm.PackageManager;

import android.opengl.EGL14;

import android.os.SystemProperties;

import android.util.Log;
@@ -34,6 +35,23 @@ public final class GraphicsEnvironment { 
    private static final String PROPERTY_GFX_DRIVER = "ro.gfx.driver.0";



    public static void setupGraphicsEnvironment(Context context) {

        chooseDriver(context);



        // Now that we've figured out which driver to use for this process, load and initialize it.

        // This can take multiple frame periods, and it would otherwise happen as part of the first

        // frame, increasing first-frame latency. Starting it here, as a low-priority background

        // thread, means that it's usually done long before we start drawing the first frame,

        // without significantly disrupting other activity launch work.

        Thread eglInitThread = new Thread(

                () -> {

                    Thread.currentThread().setPriority(Thread.MIN_PRIORITY);

                    EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY);

                },

                "EGL Init");

        eglInitThread.start();

    }



    private static void chooseDriver(Context context) {

        String driverPackageName = SystemProperties.get(PROPERTY_GFX_DRIVER);

        if (driverPackageName == null || driverPackageName.isEmpty()) {

            return;

core/java/com/android/internal/os/ZygoteInit.java

+0 −10
Original line number Diff line number Diff line
@@ -26,7 +26,6 @@ import android.icu.impl.CacheValue; 
import android.icu.text.DecimalFormatSymbols;

import android.icu.util.ULocale;

import android.net.LocalServerSocket;

import android.opengl.EGL14;

import android.os.Process;

import android.os.SystemClock;

import android.os.SystemProperties;
@@ -199,9 +198,6 @@ public class ZygoteInit { 
        Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "PreloadResources");

        preloadResources();

        Trace.traceEnd(Trace.TRACE_TAG_DALVIK);

        Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "PreloadOpenGL");

        preloadOpenGL();

        Trace.traceEnd(Trace.TRACE_TAG_DALVIK);

        preloadSharedLibraries();

        preloadTextResources();

        // Ask the WebViewFactory to do any initialization that must run in the zygote process,
@@ -242,12 +238,6 @@ public class ZygoteInit { 
        System.loadLibrary("jnigraphics");

    }



    private static void preloadOpenGL() {

        if (!SystemProperties.getBoolean(PROPERTY_DISABLE_OPENGL_PRELOADING, false)) {

            EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY);

        }

    }



    private static void preloadTextResources() {

        Hyphenator.init();

        TextView.preloadFontCache();