Merge "Zygote: add a way to preload Vulkan driver" into qt-dev

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

@@ -518,7 +518,7 @@ public final class Zygote {
         ZygoteArguments args = null;
 
         // Load resources
-        ZygoteInit.nativePreloadOpenGL();
+        ZygoteInit.nativePreloadGraphicsDriver();
 
         while (true) {
             try {

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

@@ -85,7 +85,8 @@ public class ZygoteInit {
     // TODO (chriswailes): Change this so it is set with Zygote or ZygoteSecondary as appropriate
     private static final String TAG = "Zygote";
 
-    private static final String PROPERTY_DISABLE_OPENGL_PRELOADING = "ro.zygote.disable_gl_preload";
+    private static final String PROPERTY_DISABLE_GRAPHICS_DRIVER_PRELOADING =
+            "ro.zygote.disable_gl_preload";
     private static final String PROPERTY_GFX_DRIVER = "ro.gfx.driver.0";
 
     private static final int LOG_BOOT_PROGRESS_PRELOAD_START = 3020;
@@ -149,8 +150,8 @@ public class ZygoteInit {
         Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "PreloadAppProcessHALs");
         nativePreloadAppProcessHALs();
         Trace.traceEnd(Trace.TRACE_TAG_DALVIK);
-        Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "PreloadOpenGL");
-        maybePreloadOpenGL();
+        Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "PreloadGraphicsDriver");
+        maybePreloadGraphicsDriver();
         Trace.traceEnd(Trace.TRACE_TAG_DALVIK);
         preloadSharedLibraries();
         preloadTextResources();
@@ -193,19 +194,19 @@ public class ZygoteInit {
     native private static void nativePreloadAppProcessHALs();
 
     /**
-     * This call loads the graphics driver by attempting to make an OpenGL call.  If the driver is
+     * This call loads the graphics driver by making an OpenGL or Vulkan call.  If the driver is
      * not currently in memory it will load and initialize it.  The OpenGL call itself is relatively
      * cheap and pure.  This means that it is a low overhead on the initial call, and is safe and
      * cheap to call later.  Calls after the initial invocation will effectively be no-ops for the
      * system.
      */
-    static native void nativePreloadOpenGL();
+    static native void nativePreloadGraphicsDriver();
 
-    private static void maybePreloadOpenGL() {
+    private static void maybePreloadGraphicsDriver() {
         String driverPackageName = SystemProperties.get(PROPERTY_GFX_DRIVER);
-        if (!SystemProperties.getBoolean(PROPERTY_DISABLE_OPENGL_PRELOADING, false) &&
-                (driverPackageName == null || driverPackageName.isEmpty())) {
-            nativePreloadOpenGL();
+        if (!SystemProperties.getBoolean(PROPERTY_DISABLE_GRAPHICS_DRIVER_PRELOADING, false)
+                && (driverPackageName == null || driverPackageName.isEmpty())) {
+            nativePreloadGraphicsDriver();
         }
     }
 

core/jni/com_android_internal_os_ZygoteInit.cpp

@@ -17,12 +17,17 @@
 #define LOG_TAG "Zygote"
 
 #include <EGL/egl.h>
+#include <Properties.h>
 #include <ui/GraphicBufferMapper.h>
+#include <vulkan/vulkan.h>
 
 #include "core_jni_helpers.h"
 
 namespace {
 
+using android::uirenderer::Properties;
+using android::uirenderer::RenderPipelineType;
+
 // Shadow call stack (SCS) is a security mitigation that uses a separate stack
 // (the SCS) for return addresses. In versions of Android newer than P, the
 // compiler cooperates with the system to ensure that the SCS address is always
@@ -58,16 +63,21 @@ void android_internal_os_ZygoteInit_nativePreloadAppProcessHALs(JNIEnv* env, jcl
     // (b) loaded by most app processes.
 }
 
-void android_internal_os_ZygoteInit_nativePreloadOpenGL(JNIEnv* env, jclass) {
+void android_internal_os_ZygoteInit_nativePreloadGraphicsDriver(JNIEnv* env, jclass) {
     ScopedSCSExit x;
-    eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    if (Properties::peekRenderPipelineType() == RenderPipelineType::SkiaGL) {
+        eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    } else {
+        uint32_t count = 0;
+        vkEnumerateInstanceExtensionProperties(nullptr, &count, nullptr);
+    }
 }
 
 const JNINativeMethod gMethods[] = {
     { "nativePreloadAppProcessHALs", "()V",
       (void*)android_internal_os_ZygoteInit_nativePreloadAppProcessHALs },
-    { "nativePreloadOpenGL", "()V",
-      (void*)android_internal_os_ZygoteInit_nativePreloadOpenGL },
+    { "nativePreloadGraphicsDriver", "()V",
+      (void*)android_internal_os_ZygoteInit_nativePreloadGraphicsDriver },
 };
 
 }  // anonymous namespace

libs/hwui/Properties.cpp

@@ -169,24 +169,22 @@ ProfileType Properties::getProfileType() {
     return sProfileType;
 }
 
-RenderPipelineType Properties::getRenderPipelineType() {
+RenderPipelineType Properties::peekRenderPipelineType() {
+    // If sRenderPipelineType has been locked, just return the locked type immediately.
     if (sRenderPipelineType != RenderPipelineType::NotInitialized) {
         return sRenderPipelineType;
     }
     bool useVulkan = use_vulkan().value_or(false);
     char prop[PROPERTY_VALUE_MAX];
-    if (useVulkan) {
-        property_get(PROPERTY_RENDERER, prop, "skiavk");
-    } else {
-        property_get(PROPERTY_RENDERER, prop, "skiagl");
-    }
+    property_get(PROPERTY_RENDERER, prop, useVulkan ? "skiavk" : "skiagl");
     if (!strcmp(prop, "skiavk")) {
-        ALOGD("Skia Vulkan Pipeline");
-        sRenderPipelineType = RenderPipelineType::SkiaVulkan;
-    } else {  //"skiagl"
-        ALOGD("Skia GL Pipeline");
-        sRenderPipelineType = RenderPipelineType::SkiaGL;
+        return RenderPipelineType::SkiaVulkan;
     }
+    return RenderPipelineType::SkiaGL;
+}
+
+RenderPipelineType Properties::getRenderPipelineType() {
+    sRenderPipelineType = peekRenderPipelineType();
     return sRenderPipelineType;
 }
 

libs/hwui/Properties.h

@@ -214,6 +214,7 @@ public:
     static int overrideSpotShadowStrength;
 
     static ProfileType getProfileType();
+    ANDROID_API static RenderPipelineType peekRenderPipelineType();
     ANDROID_API static RenderPipelineType getRenderPipelineType();
 
     ANDROID_API static bool enableHighContrastText;