vulkan: Add apk_library_dir virtual branch

frameworks/native/vulkan/patches

================================

Each subdirectory corresponds to a sequence of patches. These are

"virtual branches": we only have one shared branch, so these let us

share experimental or auxiliary changes without disturbing the main

branch.

To apply:

$ cd <somewhere in target git repo>

$ git am $VULKAN_PATCHES/$PATCH_DIR/*

frameworks_base-apk_library_dir

-------------------------------

This branch is for frameworks/base. It modifies the framework to

inform the Vulkan loader, during activity startup, where the

activity's native library directory. The loader will search this

directory for layer libraries. Without this change, layers will only

be loaded from a global location under /data.

From 5c7e465f1d11bccecdc5cacce87d1fd7deeb5adb Mon Sep 17 00:00:00 2001

From: Michael Lentine <mlentine@google.com>

Date: Mon, 14 Sep 2015 13:28:25 -0500

Subject: [PATCH] Adding plumbing for passing the lib directory.

Added call in handleBindApplication which will pass the library path into

HardwareRender which then passes it to libvulkan through ThreadedRenderer's

jni interface.

Change-Id: Ie5709ac46f47c4af5c020d604a479e78745d7777

---

 core/java/android/app/ActivityThread.java    |  7 +++++--

 core/java/android/view/HardwareRenderer.java | 11 +++++++++++

 core/java/android/view/ThreadedRenderer.java |  1 +

 core/jni/Android.mk                          |  2 ++

 core/jni/android_view_ThreadedRenderer.cpp   | 15 +++++++++++++++

 5 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java

index da21eaf..76608c6 100644

--- a/core/java/android/app/ActivityThread.java

+++ b/core/java/android/app/ActivityThread.java

@@ -4520,8 +4520,11 @@ public final class ActivityThread {

             } else {

                 Log.e(TAG, "Unable to setupGraphicsSupport due to missing code-cache directory");

             }

-        }

-

+        } 

+        

+        // Add the lib dir path to hardware renderer so that vulkan layers

+        // can be searched for within that directory.

+        HardwareRenderer.setLibDir(data.info.getLibDir());

         final boolean is24Hr = "24".equals(mCoreSettings.getString(Settings.System.TIME_12_24));

         DateFormat.set24HourTimePref(is24Hr);

diff --git a/core/java/android/view/HardwareRenderer.java b/core/java/android/view/HardwareRenderer.java

index 5e58250..ed99115 100644

--- a/core/java/android/view/HardwareRenderer.java

+++ b/core/java/android/view/HardwareRenderer.java

@@ -301,6 +301,17 @@ public abstract class HardwareRenderer {

     }

     /**

+     * Sets the library directory to use as a search path for vulkan layers.

+     *

+     * @param libDir A directory that contains vulkan layers

+     *

+     * @hide

+     */

+    public static void setLibDir(String libDir) {

+        ThreadedRenderer.setupVulkanLayerPath(libDir);

+    }

+

+    /**

      * Indicates that the specified hardware layer needs to be updated

      * as soon as possible.

      *

diff --git a/core/java/android/view/ThreadedRenderer.java b/core/java/android/view/ThreadedRenderer.java

index f6119e2..d3e5175 100644

--- a/core/java/android/view/ThreadedRenderer.java

+++ b/core/java/android/view/ThreadedRenderer.java

@@ -492,6 +492,7 @@ public class ThreadedRenderer extends HardwareRenderer {

     }

     static native void setupShadersDiskCache(String cacheFile);

+    static native void setupVulkanLayerPath(String layerPath);

     private static native void nSetAtlas(long nativeProxy, GraphicBuffer buffer, long[] map);

     private static native void nSetProcessStatsBuffer(long nativeProxy, int fd);

diff --git a/core/jni/Android.mk b/core/jni/Android.mk

index 6b07a47..438e95b 100644

--- a/core/jni/Android.mk

+++ b/core/jni/Android.mk

@@ -177,6 +177,7 @@ LOCAL_C_INCLUDES += \

     $(LOCAL_PATH)/android/graphics \

     $(LOCAL_PATH)/../../libs/hwui \

     $(LOCAL_PATH)/../../../native/opengl/libs \

+    $(LOCAL_PATH)/../../../native/vulkan/include \

     $(call include-path-for, bluedroid) \

     $(call include-path-for, libhardware)/hardware \

     $(call include-path-for, libhardware_legacy)/hardware_legacy \

@@ -225,6 +226,7 @@ LOCAL_SHARED_LIBRARIES := \

     libEGL \

     libGLESv1_CM \

     libGLESv2 \

+    libvulkan \

     libETC1 \

     libhardware \

     libhardware_legacy \

diff --git a/core/jni/android_view_ThreadedRenderer.cpp b/core/jni/android_view_ThreadedRenderer.cpp

index 47132f4..69e8ca6 100644

--- a/core/jni/android_view_ThreadedRenderer.cpp

+++ b/core/jni/android_view_ThreadedRenderer.cpp

@@ -27,6 +27,7 @@

 #include <EGL/egl.h>

 #include <EGL/eglext.h>

 #include <EGL/egl_cache.h>

+#include <vulkan/vulkan_loader_data.h>

 #include <utils/StrongPointer.h>

 #include <android_runtime/android_view_Surface.h>

@@ -448,6 +449,18 @@ static void android_view_ThreadedRenderer_setupShadersDiskCache(JNIEnv* env, job

 }

 // ----------------------------------------------------------------------------

+// Layers

+// ----------------------------------------------------------------------------

+

+static void android_view_ThreadedRenderer_setupVulkanLayerPath(JNIEnv* env, jobject clazz,

+        jstring layerPath) {

+

+    const char* layerArray = env->GetStringUTFChars(layerPath, NULL);

+    vulkan::LoaderData::GetInstance().layer_path = layerArray;

+    env->ReleaseStringUTFChars(layerPath, layerArray);

+}

+

+// ----------------------------------------------------------------------------

 // JNI Glue

 // ----------------------------------------------------------------------------

@@ -487,6 +500,8 @@ static JNINativeMethod gMethods[] = {

     { "nDumpProfileData", "([BLjava/io/FileDescriptor;)V", (void*) android_view_ThreadedRenderer_dumpProfileData },

     { "setupShadersDiskCache", "(Ljava/lang/String;)V",

                 (void*) android_view_ThreadedRenderer_setupShadersDiskCache },

+    { "setupVulkanLayerPath", "(Ljava/lang/String;)V",

+                (void*) android_view_ThreadedRenderer_setupVulkanLayerPath },

 };

 int register_android_view_ThreadedRenderer(JNIEnv* env) {

-- 

2.6.0.rc2.230.g3dd15c0