Add project files

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.externalNativeBuild

.gitmodules

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+[submodule "ImguiDemoSdl/src/main/cpp/deps/imgui"]
+	path = ImguiDemoSdl/src/main/cpp/deps/imgui
+	url = https://github.com/ocornut/imgui
+[submodule "ImguiDemoSdl/src/main/cpp/deps/glm"]
+	path = ImguiDemoSdl/src/main/cpp/deps/glm
+	url = https://github.com/g-truc/glm
+[submodule "ImguiDemoSdl/src/main/cpp/deps/SDL"]
+	path = ImguiDemoSdl/src/main/cpp/deps/SDL
+	url = https://github.com/sfalexrog/SDL
+	branch = cmake_fixes

ImguiDemoSdl/CMakeLists.txt

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+# For more information about using CMake with Android Studio, read the
+# documentation: https://d.android.com/studio/projects/add-native-code.html
+
+# Sets the minimum version of CMake required to build the native library.
+
+cmake_minimum_required(VERSION 3.4.1)
+
+# Creates and names a library, sets it as either STATIC
+# or SHARED, and provides the relative paths to its source code.
+# You can define multiple libraries, and CMake builds them for you.
+# Gradle automatically packages shared libraries with your APK.
+
+add_library( # Sets the name of the library.
+             native-lib
+
+             # Sets the library as a shared library.
+             SHARED
+
+             # Provides a relative path to your source file(s).
+             src/main/cpp/native-lib.cpp )
+
+# Searches for a specified prebuilt library and stores the path as a
+# variable. Because CMake includes system libraries in the search path by
+# default, you only need to specify the name of the public NDK library
+# you want to add. CMake verifies that the library exists before
+# completing its build.
+
+find_library( # Sets the name of the path variable.
+              log-lib
+
+              # Specifies the name of the NDK library that
+              # you want CMake to locate.
+              log )
+
+# Specifies libraries CMake should link to your target library. You
+# can link multiple libraries, such as libraries you define in this
+# build script, prebuilt third-party libraries, or system libraries.
+
+target_link_libraries( # Specifies the target library.
+                       native-lib
+
+                       # Links the target library to the log library
+                       # included in the NDK.
+                       ${log-lib} )

ImguiDemoSdl/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.2"
+    defaultConfig {
+        applicationId "me.sfalexrog.imguidemo"
+        minSdkVersion 14
+        targetSdkVersion 25
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        externalNativeBuild {
+            cmake {
+                cppFlags "-std=c++11"
+                targets "demo"
+            }
+        }
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+    externalNativeBuild {
+        cmake {
+            path "src/main/cpp/CMakeLists.txt"
+        }
+    }
+
+    sourceSets {
+        main {
+            // We're using SDLActivity from SDL sources, not copying that to our source tree
+            java.srcDirs += ['src/main/cpp/deps/SDL/android-project/src']
+            // Instead of copying data files from the native project, we just add its data
+            // as another asset directory
+            assets.srcDirs += ['src/main/cpp/data']
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    compile 'com.android.support:appcompat-v7:25.3.1'
+    testCompile 'junit:junit:4.12'
+}

ImguiDemoSdl/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /opt/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 *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

ImguiDemoSdl/src/androidTest/java/me/sfalexrog/imguidemo/ExampleInstrumentedTest.java

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+package me.sfalexrog.imguidemo;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumentation test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("me.sfalexrog.imguidemo", appContext.getPackageName());
+    }
+}

ImguiDemoSdl/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+
+    package="me.sfalexrog.imguidemo">
+
+    <uses-feature android:glEsVersion="0x00020000" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".DemoActivity"
+            android:configChanges="orientation">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+
+</manifest>

ImguiDemoSdl/src/main/cpp/CMakeLists.txt

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+# Cmake file for a sample cross-platform project with dear imgui.
+# The aim here is to have most of the stuff (including cmake files)
+# be the same throughout platforms.
+
+cmake_minimum_required(VERSION 3.1)
+
+project(imgui_demo)
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
+
+find_package(SDL2 REQUIRED)
+
+# This is an adaptation of the ImGui demo, with some geometry (a teapot)
+# rendered in order to check the ImGui implementation. Teapot is taken
+# from Google NDK samples.
+
+set(IMGUI_PATH deps/imgui)
+set(IMGUI_IMPL_PATH src/imgui_impl)
+
+# Since we're drawing something that's not just a triangle, we're gonna
+# want a library that deals with vectors and matrices. glm is the obvious
+# choice.
+
+add_subdirectory(deps/glm)
+
+# Use GLES2/GLES3 implementations for Android, GL3 for everything else
+
+if (ANDROID)
+    set(GL_PROFILES "GL_PROFILE_GLES2" "GL_PROFILE_GLES3")
+else()
+    set(GL_PROFILES "GL_PROFILE_GL3")
+endif()
+
+file(GLOB IMGUI_FILES
+    ${IMGUI_PATH}/*.cpp
+    ${IMGUI_IMPL_PATH}/*.cpp
+)
+
+file(GLOB DEMO_FILES
+    src/*.cpp
+)
+
+if (NOT ANDROID)
+    set(GLLOAD_PATH src/glload)
+    file(GLOB GLLOAD_FILES
+            ${GLLOAD_PATH}/*.c)
+endif()
+
+
+set(DEMO_SOURCES ${IMGUI_FILES} ${DEMO_FILES} ${GLLOAD_FILES})
+
+# Build as a library for Android, as an executable otherwise
+
+if (ANDROID)
+    add_library(demo SHARED
+        ${DEMO_SOURCES}
+    )
+else()
+    add_executable(demo
+        ${DEMO_SOURCES}
+    )
+endif()
+
+target_link_libraries(demo ${SDL2_LIBRARY} glm)
+target_include_directories(demo PRIVATE ${SDL2_INCLUDE_DIR})
+target_include_directories(demo PRIVATE ${IMGUI_PATH})
+target_include_directories(demo PRIVATE ${IMGUI_IMPL_PATH})
+target_include_directories(demo PRIVATE ${GLLOAD_PATH})
+target_compile_definitions(demo PRIVATE ${GL_PROFILES})