Added android example and upgraded build configurations

.ccls

@@ -16,5 +16,6 @@
 -I/c/Users/axsau/Programming/lib/vcpkg/installed/x64-linux/include/
 -I./src/include/
 -I./single_include/
+-I./vk_ndk_wrapper_include/
 -I./test/compiled_shaders_include/
 

CMakeLists.txt

@@ -1,7 +1,7 @@
-cmake_minimum_required(VERSION 3.17.0)
+cmake_minimum_required(VERSION 3.4.1)
 project(kompute VERSION 0.3.0)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 14)
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 set(CMAKE_VERBOSE_MAKEFILE on)
@@ -11,15 +11,27 @@ option(KOMPUTE_OPT_BUILD_TESTS "Enable if you want to build tests" 0)
 option(KOMPUTE_OPT_BUILD_DOCS "Enable if you want to build documentation" 0)
 option(KOMPUTE_OPT_BUILD_SHADERS "Enable if you want to re-build all shader files" 0)
 option(KOMPUTE_OPT_BUILD_SINGLE_HEADER "Enable if you want to build the single header file" 0)
+option(KOMPUTE_OPT_INSTALL "Enable if you want to enable installation" 1)
 option(KOMPUTE_OPT_ENABLE_SPDLOG "Extra compile flags for Kompute, see docs for full list" 0)
+option(KOMPUTE_OPT_ANDOID_BUILD "Enable android compilation flags required" 0)
+# TODO: Add on docs
+option(KOMPUTE_OPT_DISABLE_VK_DEBUG_LAYERS "Explicitly disable debug layers even on debug" 0)
 
 set(KOMPUTE_EXTRA_CXX_FLAGS "" CACHE STRING "Extra compile flags for Kompute, see docs for full list")
 
 if(KOMPUTE_OPT_ENABLE_SPDLOG)
     set(KOMPUTE_EXTRA_CXX_FLAGS "${KOMPUTE_EXTRA_CXX_FLAGS} -DKOMPUTE_ENABLE_SPDLOG=1")
 endif()
 
-set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DDEBUG=1 ${KOMPUTE_EXTRA_CXX_FLAGS}")
+if(KOMPUTE_OPT_ANDOID_BUILD)
+    set(KOMPUTE_EXTRA_CXX_FLAGS "${KOMPUTE_EXTRA_CXX_FLAGS} -DVK_USE_PLATFORM_ANDROID_KHR")
+endif()
+
+if(KOMPUTE_OPT_DISABLE_VK_DEBUG_LAYERS)
+    set(KOMPUTE_EXTRA_CXX_FLAGS "${KOMPUTE_EXTRA_CXX_FLAGS} -DKOMPUTE_DISABLE_VK_DEBUG_LAYERS=1")
+endif()
+
+set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DDEBUG=1 ${KOMPUTE_EXTRA_CXX_FLAGS} -DUSE_DEBUG_EXTENTIONS")
 set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DRELEASE=1 ${KOMPUTE_EXTRA_CXX_FLAGS}")
 
 # Allow scripts to call main kompute Makefile

examples/android/android-simple/.gitignore

@@ -0,0 +1,11 @@
+.idea
+.DS_Store
+.gradle
+build
+*.iml
+*~
+local.properties
+.externalNativeBuild
+.cxx
+.cdep
+cdep.sha256

examples/android/android-simple/README.md

@@ -0,0 +1,31 @@
+
+<table>
+<tr>
+
+
+<td width="70%">
+<h1>Vulkan Kompute Android</h1>
+<h3>Example Running Logistic Regression with Vulkan Kompute in Android Phones</h3>
+
+<p>
+This example provides an end to end example that can be run using android studio.
+
+The example uses the Kompute build in the relative folder to build the respective binaries for android.
+
+The build structure provides a range of options to build in different Android hardware. This example was tested in various emulators including Pixel 2, and a physical Samsung S7 phone.
+</p>
+<img src="https://raw.githubusercontent.com/EthicalML/vulkan-kompute/android-example/docs/images/android-editor.jpg">
+
+</td>
+
+
+<td width="30%">
+<img src="https://raw.githubusercontent.com/EthicalML/vulkan-kompute/android-example/docs/images/android-kompute.jpg">
+</td>
+
+</tr>
+</table>
+
+
+
+

examples/android/android-simple/app/build.gradle

@@ -0,0 +1,71 @@
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 29
+    ndkVersion '21.2.6472646'
+
+    defaultConfig {
+        applicationId "com.ethicalml.kompute"
+        minSdkVersion 23
+        targetSdkVersion 29
+        versionCode = 1
+        versionName = "0.0.1"
+        externalNativeBuild {
+            cmake {
+                abiFilters "armeabi-v7a", 'arm64-v8a', 'x86', 'x86_64'
+                arguments '-DANDROID_TOOLCHAIN=clang',
+                        '-DANDROID_STL=c++_static',
+                        '-DKOMPUTE_OPT_ANDOID_BUILD=1',
+                        '-DKOMPUTE_OPT_INSTALL=0',
+                        '-DKOMPUTE_OPT_BUILD_SINGLE_HEADER=1',
+                        '-DKOMPUTE_OPT_DISABLE_VK_DEBUG_LAYERS=1',
+                        '-DKOMPUTE_EXTRA_CXX_FLAGS=-DKOMPUTE_VK_API_MINOR_VERSION=0'
+            }
+        }
+    }
+
+    buildFeatures {
+        viewBinding true
+    }
+    buildTypes {
+        release {
+             minifyEnabled = false
+             proguardFiles getDefaultProguardFile('proguard-android.txt'),
+                     'proguard-rules.pro'
+        }
+     }
+    externalNativeBuild {
+        cmake {
+            path 'src/main/cpp/CMakeLists.txt'
+        }
+    }
+
+    flavorDimensions 'cpuArch'
+    productFlavors {
+        arm8 {
+            dimension 'cpuArch'
+            ndk {
+                abiFilters 'arm64-v8a', 'armeabi-v7a'
+            }
+        }
+        x86_64 {
+            dimension 'cpuArch'
+            ndk {
+                abiFilters 'x86_64', 'x86'
+            }
+        }
+        universal {
+            dimension 'cpuArch'
+            // include all default ABIs. with NDK-r16,  it is:
+            //   armeabi-v7a, arm64-v8a, x86, x86_64
+        }
+    }
+}
+
+dependencies {
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}

examples/android/android-simple/app/proguard-rules.pro

@@ -0,0 +1,17 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in ${ANDROID_SDK}/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}

examples/android/android-simple/app/src/main/AndroidManifest.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- BEGIN_INCLUDE(manifest) -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+        package="com.ethicalml.kompute">
+
+        <application
+            android:allowBackup="true"
+            android:icon="@mipmap/ic_launcher"
+            android:label="@string/app_name"
+            android:supportsRtl="true"
+            android:theme="@style/AppTheme">
+            <activity android:name=".KomputeJni">
+                <intent-filter>
+                    <action android:name="android.intent.action.MAIN" />
+                    <category android:name="android.intent.category.LAUNCHER" />
+                </intent-filter>
+            </activity>
+        </application>
+
+</manifest>
+<!-- END_INCLUDE(manifest) -->

examples/android/android-simple/app/src/main/cpp/CMakeLists.txt

@@ -0,0 +1,27 @@
+cmake_minimum_required(VERSION 3.4.1)
+
+add_subdirectory(../../../../../../../ ${CMAKE_CURRENT_BINARY_DIR}/kompute_build)
+
+set(VK_ANDROID_INCLUDE_DIR ${ANDROID_NDK}/sources/third_party/vulkan/src/include)
+
+add_library(kompute-jni SHARED
+        KomputeJniNative.cpp
+        KomputeModelML.cpp)
+
+include_directories(
+        ${VK_ANDROID_COMMON_DIR}
+        ${VK_ANDROID_INCLUDE_DIR}
+        ../../../../../../../single_include/
+        ../../../../../../../vk_ndk_wrapper_include/)
+
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 \
+                     -DVK_USE_PLATFORM_ANDROID_KHR=1 \
+                     -DKOMPUTE_DISABLE_VK_DEBUG_LAYERS=1")
+
+target_link_libraries(kompute-jni
+        # Libraries from kompute build
+        kompute
+        kompute_vk_ndk_wrapper
+        # Libraries from android build
+        log
+        android)

examples/android/android-simple/app/src/main/cpp/KomputeJniNative.cpp

@@ -0,0 +1,114 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#undef DEBUG
+#define RELEASE 1
+
+#include <android/log.h>
+#include <unistd.h>
+
+#include <string.h>
+#include <jni.h>
+
+#include "kompute/Kompute.hpp"
+
+#include "KomputeModelML.hpp"
+
+#ifndef KOMPUTE_VK_INIT_RETRIES
+#define KOMPUTE_VK_INIT_RETRIES 5
+#endif
+
+static std::vector<float> jfloatArrayToVector(JNIEnv *env, const jfloatArray & fromArray) {
+    float *inCArray = env->GetFloatArrayElements(fromArray, NULL);
+    if (NULL == inCArray) return std::vector<float>();
+    int32_t length = env->GetArrayLength(fromArray);
+
+    std::vector<float> outVector(inCArray, inCArray + length);
+    return outVector;
+}
+
+static jfloatArray vectorToJFloatArray(JNIEnv *env, const std::vector<float> & fromVector) {
+    jfloatArray ret = env->NewFloatArray(fromVector.size());
+    if (NULL == ret) return NULL;
+    env->SetFloatArrayRegion(ret, 0, fromVector.size(), fromVector.data());
+    return ret;
+}
+
+extern "C" {
+
+JNIEXPORT jboolean JNICALL
+Java_com_ethicalml_kompute_KomputeJni_initVulkan(JNIEnv *env, jobject thiz) {
+
+    SPDLOG_INFO("Initialising vulkan");
+
+    uint32_t totalRetries = 0;
+
+    while (totalRetries < KOMPUTE_VK_INIT_RETRIES) {
+        SPDLOG_INFO("VULKAN LOAD TRY NUMBER: %u", totalRetries);
+        if(InitVulkan()) {
+            break;
+        }
+        sleep(1);
+        totalRetries++;
+    }
+
+    return totalRetries < KOMPUTE_VK_INIT_RETRIES;
+}
+
+
+JNIEXPORT jfloatArray JNICALL
+Java_com_ethicalml_kompute_KomputeJni_kompute(
+        JNIEnv *env,
+        jobject thiz,
+        jfloatArray xiJFloatArr,
+        jfloatArray xjJFloatArr,
+        jfloatArray yJFloatArr) {
+
+    SPDLOG_INFO("Creating manager");
+
+    std::vector<float> xiVector = jfloatArrayToVector(env, xiJFloatArr);
+    std::vector<float> xjVector = jfloatArrayToVector(env, xjJFloatArr);
+    std::vector<float> yVector = jfloatArrayToVector(env, yJFloatArr);
+
+    KomputeModelML kml;
+    kml.train(yVector, xiVector, xjVector);
+
+    std::vector<float> pred = kml.predict(xiVector, xjVector);
+
+    return vectorToJFloatArray(env, pred);
+}
+
+JNIEXPORT jfloatArray JNICALL
+Java_com_ethicalml_kompute_KomputeJni_komputeParams(
+        JNIEnv *env,
+        jobject thiz,
+        jfloatArray xiJFloatArr,
+        jfloatArray xjJFloatArr,
+        jfloatArray yJFloatArr) {
+
+    SPDLOG_INFO("Creating manager");
+
+    std::vector<float> xiVector = jfloatArrayToVector(env, xiJFloatArr);
+    std::vector<float> xjVector = jfloatArrayToVector(env, xjJFloatArr);
+    std::vector<float> yVector = jfloatArrayToVector(env, yJFloatArr);
+
+    KomputeModelML kml;
+    kml.train(yVector, xiVector, xjVector);
+
+    std::vector<float> params = kml.get_params();
+
+    return vectorToJFloatArray(env, params);
+}
+
+}