├── .gitignore ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── com │ │ └── anandmuralidhar │ │ └── glescontextandroid │ │ ├── GLESContextActivity.java │ │ ├── MyGLRenderer.java │ │ └── MyGLSurfaceView.java │ ├── jni │ ├── glesNative │ │ ├── glesNative.cpp │ │ ├── glesNative.h │ │ └── myLogger.h │ └── jniCalls │ │ ├── glesContextActivity.cpp │ │ └── myGLRenderer.cpp │ └── res │ ├── layout │ └── gl_context.xml │ ├── mipmap-hdpi │ └── ic_launcher.png │ ├── mipmap-mdpi │ └── ic_launcher.png │ ├── mipmap-xhdpi │ └── ic_launcher.png │ ├── mipmap-xxhdpi │ └── ic_launcher.png │ ├── mipmap-xxxhdpi │ └── ic_launcher.png │ └── values │ ├── colors.xml │ ├── strings.xml │ └── styles.xml ├── build.gradle ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── native_app_glue ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ └── AndroidManifest.xml ├── ndk_helper ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ └── AndroidManifest.xml └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | #built application files 2 | *.apk 3 | *.ap_ 4 | 5 | # files for the dex VM 6 | *.dex 7 | 8 | # Java class files 9 | *.class 10 | 11 | # generated files 12 | bin/ 13 | gen/ 14 | 15 | # Local configuration file (sdk path, etc) 16 | local.properties 17 | 18 | # Windows thumbnail db 19 | Thumbs.db 20 | 21 | # OSX files 22 | .DS_Store 23 | 24 | # Eclipse project files 25 | .classpath 26 | .project 27 | 28 | # Android Studio 29 | *.iml 30 | .idea 31 | #.idea/workspace.xml - remove # and delete .idea if it better suit your needs. 32 | .gradle 33 | gradle.properties 34 | build 35 | 36 | libs 37 | obj 38 | assets 39 | drawable-temp 40 | import-summary.txt 41 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also 175 | recommend that a file or class name and description of purpose be included on 176 | the same "printed page" as the copyright notice for easier identification within 177 | third-party archives. 178 | 179 | Copyright [yyyy] [name of copyright owner] 180 | 181 | Licensed under the Apache License, Version 2.0 (the "License"); 182 | you may not use this file except in compliance with the License. 183 | You may obtain a copy of the License at 184 | 185 | http://www.apache.org/licenses/LICENSE-2.0 186 | 187 | Unless required by applicable law or agreed to in writing, software 188 | distributed under the License is distributed on an "AS IS" BASIS, 189 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 190 | See the License for the specific language governing permissions and 191 | limitations under the License. -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | GLESContextAndroid 2 | ================== 3 | This project sets up GLES context in Android, creates a native object, and renders to the display from native code. The rendering call simply changes the screen color to blue. OpenGL ES and GLSL versions are displayed on the screen using Java. We use an AsyncTask to communicate across GL and UI threads in Android. 4 | 5 | A blog describing this project: 6 | http://www.anandmuralidhar.com/blog/android/gles-context/ 7 | 8 | License 9 | ------- 10 | 11 | Copyright 2016 Anand Muralidhar 12 | 13 | Licensed to the Apache Software Foundation (ASF) under one or more contributor 14 | license agreements. See the NOTICE file distributed with this work for 15 | additional information regarding copyright ownership. The ASF licenses this 16 | file to you under the Apache License, Version 2.0 (the "License"); you may not 17 | use this file except in compliance with the License. You may obtain a copy of 18 | the License at 19 | 20 | http://www.apache.org/licenses/LICENSE-2.0 21 | 22 | Unless required by applicable law or agreed to in writing, software 23 | distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 24 | WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 25 | License for the specific language governing permissions and limitations under 26 | the License. -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | import org.apache.tools.ant.taskdefs.condition.Os 2 | 3 | apply plugin: 'com.android.model.application' 4 | 5 | model { 6 | android { 7 | 8 | // 23 = Android Marshmallow 9 | compileSdkVersion = 23 10 | buildToolsVersion = '23.0.2' 11 | 12 | defaultConfig { 13 | applicationId "com.anandmuralidhar.glescontextandroid" 14 | // assuming that device had Android KitKat (19) or above 15 | minSdkVersion.apiLevel = 19 16 | targetSdkVersion.apiLevel = 22 17 | 18 | // versionCode and versionName are relevant if you release the app on Google Play 19 | versionCode 1 20 | versionName "1.0" 21 | } 22 | 23 | ndk { 24 | platformVersion = 19 25 | moduleName = 'GLESNative' // this creates libGLESNative.so and should be loaded in Java 26 | toolchain = "gcc" 27 | stl = 'gnustl_static' 28 | 29 | // specify the path to jni code 30 | cppFlags.addAll(['-I' + file('src/main/jni/glesNative')]) 31 | 32 | cppFlags.addAll(['-std=c++11', '-Wall', '-fno-exceptions', '-fno-rtti']) 33 | ldLibs.addAll(['android', 'log', 'EGL', 'GLESv2', "stdc++"]) 34 | } 35 | 36 | sources { 37 | main { 38 | jni { 39 | dependencies { 40 | // we use some functions from ndk_helper to simplify native tasks 41 | project ':ndk_helper' linkage 'static' 42 | } 43 | source { 44 | srcDirs 'src/main/jni' 45 | } 46 | } 47 | jniLibs {} 48 | } 49 | } 50 | 51 | buildTypes { 52 | release { 53 | minifyEnabled = false 54 | proguardFiles.add(file('proguard-rules.txt')) 55 | } 56 | } 57 | 58 | } 59 | } 60 | 61 | dependencies { 62 | compile 'com.android.support:appcompat-v7:23.4.0' 63 | } 64 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /home/anand/Android/Sdk/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 5 | 11 | 12 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | -------------------------------------------------------------------------------- /app/src/main/java/com/anandmuralidhar/glescontextandroid/GLESContextActivity.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2016 Anand Muralidhar 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.anandmuralidhar.glescontextandroid; 18 | 19 | import android.app.Activity; 20 | import android.opengl.GLSurfaceView; 21 | import android.os.AsyncTask; 22 | import android.os.Bundle; 23 | import android.widget.TextView; 24 | 25 | public class GLESContextActivity extends Activity { 26 | private GLSurfaceView mGLView = null; 27 | private TextView mTextView = null; 28 | private native void CreateObjectNative(); 29 | private native void DeleteObjectNative(); 30 | private native String GetGLESVersionNative(); 31 | private native boolean IsInitsDoneNative(); 32 | 33 | @Override 34 | public void onCreate(Bundle savedInstanceState) { 35 | super.onCreate(savedInstanceState); 36 | 37 | // call the native constructors to create an object 38 | CreateObjectNative(); 39 | 40 | // layout has only two components, a GLSurfaceView and a TextView 41 | setContentView(R.layout.gl_context); 42 | mGLView = (MyGLSurfaceView) findViewById (R.id.gl_surface_view); 43 | mTextView = (TextView) findViewById(R.id.gles_version_textbox); 44 | } 45 | 46 | @Override 47 | protected void onResume() { 48 | 49 | super.onResume(); 50 | 51 | // Android suggests that we call onResume on GLSurfaceView 52 | if (mGLView != null) { 53 | mGLView.onResume(); 54 | } 55 | 56 | new AsyncDisplayText().execute(); 57 | } 58 | 59 | @Override 60 | protected void onPause() { 61 | 62 | super.onPause(); 63 | 64 | // Android suggests that we call onPause on GLSurfaceView 65 | if(mGLView != null) { 66 | mGLView.onPause(); 67 | } 68 | } 69 | 70 | @Override 71 | protected void onDestroy() { 72 | 73 | super.onDestroy(); 74 | 75 | // We are exiting the activity, let's delete the native objects 76 | DeleteObjectNative(); 77 | 78 | } 79 | 80 | 81 | // this task simply waits till all inits are completed in native code 82 | // then it displays the GLES version on the screen 83 | class AsyncDisplayText extends AsyncTask { 84 | 85 | @Override 86 | // this function executes on a background thread 87 | // hence we cannot make GL calls or manipulate UI elements here 88 | protected Integer doInBackground(Void... params) { 89 | 90 | // keep polling to check if native objects are initialized 91 | while(!IsInitsDoneNative()) { 92 | try { 93 | Thread.sleep(100); 94 | } catch (InterruptedException e) { 95 | e.printStackTrace(); 96 | } catch (Exception e) { 97 | e.printStackTrace(); 98 | } 99 | } 100 | return 0; 101 | } 102 | 103 | @Override 104 | // this function executes on the UI thread and we can modify UI elements 105 | protected void onPostExecute(Integer result) { 106 | 107 | // GLES version is displayed on the screen 108 | DisplayGLVersion(GetGLESVersionNative()); 109 | 110 | } 111 | } 112 | 113 | void DisplayGLVersion(String GLVersionInfo) { 114 | if(mTextView != null) { 115 | mTextView.setText(GLVersionInfo); 116 | } 117 | } 118 | 119 | // load libGLESNative.so since it has all the native functions 120 | static { 121 | System.loadLibrary("GLESNative"); 122 | } 123 | } 124 | 125 | -------------------------------------------------------------------------------- /app/src/main/java/com/anandmuralidhar/glescontextandroid/MyGLRenderer.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2016 Anand Muralidhar 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.anandmuralidhar.glescontextandroid; 18 | 19 | import android.opengl.GLSurfaceView; 20 | import android.util.Log; 21 | 22 | import javax.microedition.khronos.egl.EGLConfig; 23 | import javax.microedition.khronos.opengles.GL10; 24 | 25 | class MyGLRenderer implements GLSurfaceView.Renderer { 26 | 27 | private native void DrawFrameNative(); 28 | private native void SurfaceCreatedNative(); 29 | private native void SurfaceChangedNative(int width, int height); 30 | 31 | 32 | public void onSurfaceCreated(GL10 gl, EGLConfig config) { 33 | 34 | // called when the surface is created or recreated 35 | // create (or recreate) native objects that are required for rendering 36 | Log.d("GLES", "onSurfaceCreated"); 37 | SurfaceCreatedNative(); 38 | 39 | } 40 | 41 | public void onDrawFrame(GL10 unused) { 42 | 43 | // called to draw the current frame 44 | // call the rendering functions in native 45 | DrawFrameNative(); 46 | 47 | } 48 | 49 | public void onSurfaceChanged(GL10 unused, int width, int height) { 50 | 51 | // called after surface is created and GLES surface changes size 52 | // this can typically happen if device orientation changes 53 | // we need to set GLES viewport to handle the change in size 54 | Log.d("GLES", "onSurfaceChanged"); 55 | SurfaceChangedNative(width, height); 56 | 57 | } 58 | 59 | } -------------------------------------------------------------------------------- /app/src/main/java/com/anandmuralidhar/glescontextandroid/MyGLSurfaceView.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2016 Anand Muralidhar 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.anandmuralidhar.glescontextandroid; 18 | 19 | import android.content.Context; 20 | import android.opengl.GLSurfaceView; 21 | import android.util.AttributeSet; 22 | import android.util.Log; 23 | import android.view.SurfaceHolder; 24 | 25 | class MyGLSurfaceView extends GLSurfaceView { 26 | 27 | private MyGLRenderer mRenderer; 28 | 29 | public MyGLSurfaceView(Context context, AttributeSet attrs) { 30 | super(context, attrs); 31 | 32 | try { 33 | // Create GLES context. Even though we are specifying OpenGL ES 2, it will try to 34 | // create the highest possible context on a phone 35 | setEGLContextClientVersion(2); 36 | 37 | // set our custom Renderer for drawing on the created SurfaceView 38 | mRenderer = new MyGLRenderer(); 39 | setRenderer(mRenderer); 40 | 41 | // calls onDrawFrame(...) continuously 42 | setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY); 43 | 44 | } catch (Exception e) { 45 | 46 | // Trouble, something's wrong! 47 | Log.e("GLESNativeAndroid", "Unable to create GLES context!", e); 48 | 49 | } 50 | 51 | } 52 | 53 | } 54 | -------------------------------------------------------------------------------- /app/src/main/jni/glesNative/glesNative.cpp: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2016 Anand Muralidhar 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | #include "glesNative.h" 18 | 19 | /** 20 | * Checks for OpenGL errors.Very useful while debugging. Call it as often as required 21 | */ 22 | void CheckGLError(std::string funcName){ 23 | 24 | GLenum err = glGetError(); 25 | if (err == GL_NO_ERROR) { 26 | return; 27 | } else { 28 | MyLOGF("[FAIL GL] %s", funcName.c_str()); 29 | } 30 | 31 | switch(err) { 32 | 33 | case GL_INVALID_ENUM: 34 | MyLOGE("GL_INVALID_ENUM: GLenum argument out of range"); 35 | break; 36 | 37 | case GL_INVALID_VALUE: 38 | MyLOGE("GL_INVALID_VALUE: numeric argument out of range"); 39 | break; 40 | 41 | case GL_INVALID_OPERATION: 42 | MyLOGE("GL_INVALID_OPERATION: operation illegal in current state"); 43 | break; 44 | 45 | case GL_INVALID_FRAMEBUFFER_OPERATION: 46 | MyLOGE("GL_INVALID_FRAMEBUFFER_OPERATION: framebuffer object is not complete"); 47 | break; 48 | 49 | case GL_OUT_OF_MEMORY: 50 | MyLOGE( "GL_OUT_OF_MEMORY: not enough memory left to execute command"); 51 | break; 52 | 53 | default: 54 | MyLOGE("unlisted error"); 55 | break; 56 | } 57 | } 58 | 59 | /** 60 | * Class constructor 61 | */ 62 | GLESNative::GLESNative() { 63 | initsDone = false; 64 | glesVersionInfo =""; 65 | } 66 | 67 | /** 68 | * Perform inits and set various GLES options before rendering image 69 | */ 70 | void GLESNative::PerformGLInits() { 71 | 72 | // Black background 73 | glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 74 | 75 | // load the GLES version into a string 76 | std::ostringstream version_string; 77 | version_string << glGetString(GL_VERSION) << ", " << glGetString(GL_SHADING_LANGUAGE_VERSION); 78 | glesVersionInfo = std::string(version_string.str()); 79 | 80 | // check if the device supports GLES 3 or GLES 2 81 | const char* versionStr = (const char*)glGetString(GL_VERSION); 82 | if (strstr(versionStr, "OpenGL ES 3.") && gl3stubInit()) { 83 | MyLOGD("Device supports GLES 3"); 84 | } else { 85 | MyLOGD("Device supports GLES 2"); 86 | } 87 | 88 | initsDone = true; 89 | 90 | CheckGLError("GLESNative::PerformGLInits"); 91 | } 92 | 93 | 94 | void GLESNative::Render() { 95 | 96 | // blue background 97 | glClearColor(0.0f, 0.0f, 1.0f, 0.0f); 98 | 99 | // clear the screen 100 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 101 | 102 | CheckGLError("GLESNative::Render"); 103 | 104 | } 105 | 106 | void GLESNative::SetViewport(int width, int height) { 107 | 108 | // set the viewport 109 | // function is also called when user changes device orientation 110 | glViewport(0, 0, width, height); 111 | 112 | CheckGLError("GLESNative::SetViewport"); 113 | } 114 | -------------------------------------------------------------------------------- /app/src/main/jni/glesNative/glesNative.h: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2016 Anand Muralidhar 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | #ifndef GLESCONTEXTANDROID_GLES_CONTEXT_H 18 | #define GLESCONTEXTANDROID_GLES_CONTEXT_H 19 | 20 | 21 | #include "myLogger.h" 22 | #include 23 | #include 24 | #include 25 | #include "gl3stub.h" 26 | #include 27 | #include 28 | 29 | class GLESNative { 30 | public: 31 | GLESNative(); 32 | void PerformGLInits(); 33 | void Render(); 34 | void SetViewport(int width, int height); 35 | bool IsInitsDone(){return initsDone;} 36 | std::string GetGLESVersionInfo() {return glesVersionInfo;} 37 | 38 | private: 39 | bool initsDone; 40 | std::string glesVersionInfo; 41 | }; 42 | 43 | #endif //GLESCONTEXTANDROID_GLES_CONTEXT_H 44 | -------------------------------------------------------------------------------- /app/src/main/jni/glesNative/myLogger.h: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2016 Anand Muralidhar 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | #ifndef GLESNATIVEANDROID_My_LOGGER_H 18 | #define GLESNATIVEANDROID_My_LOGGER_H 19 | 20 | #include 21 | 22 | #define LOG_TAG "GLESContextAndroid" 23 | #define MyLOGD(...) __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__) 24 | #define MyLOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__) 25 | #define MyLOGV(...) __android_log_print(ANDROID_LOG_VERBOSE, LOG_TAG,__VA_ARGS__) 26 | #define MyLOGI(...) __android_log_print(ANDROID_LOG_INFO , LOG_TAG,__VA_ARGS__) 27 | #define MyLOGW(...) __android_log_print(ANDROID_LOG_WARN , LOG_TAG,__VA_ARGS__) 28 | #define MyLOGF(...) __android_log_print(ANDROID_LOG_FATAL , LOG_TAG,__VA_ARGS__) 29 | #define MyLOGSIMPLE(...) 30 | 31 | #endif //GLESNATIVEANDROID_My_LOGGER_H 32 | -------------------------------------------------------------------------------- /app/src/main/jni/jniCalls/glesContextActivity.cpp: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2016 Anand Muralidhar 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | #include 18 | #include "glesNative.h" 19 | 20 | #ifdef __cplusplus 21 | extern "C" { 22 | #endif 23 | 24 | GLESNative *gGlesObject; 25 | 26 | JNIEXPORT void JNICALL 27 | Java_com_anandmuralidhar_glescontextandroid_GLESContextActivity_CreateObjectNative(JNIEnv *env, 28 | jobject instance) { 29 | gGlesObject = new GLESNative(); 30 | 31 | } 32 | 33 | JNIEXPORT void JNICALL 34 | Java_com_anandmuralidhar_glescontextandroid_GLESContextActivity_DeleteObjectNative(JNIEnv *env, 35 | jobject instance) { 36 | if (gGlesObject != NULL) { 37 | delete gGlesObject; 38 | } 39 | gGlesObject = NULL; 40 | } 41 | 42 | JNIEXPORT jboolean JNICALL 43 | Java_com_anandmuralidhar_glescontextandroid_GLESContextActivity_IsInitsDoneNative(JNIEnv *env, 44 | jobject instance) { 45 | 46 | if (gGlesObject == NULL || !gGlesObject->IsInitsDone()) { 47 | return JNI_FALSE; 48 | } else { 49 | return JNI_TRUE; 50 | } 51 | 52 | } 53 | 54 | 55 | JNIEXPORT jstring JNICALL 56 | Java_com_anandmuralidhar_glescontextandroid_GLESContextActivity_GetGLESVersionNative(JNIEnv *env, 57 | jobject instance) { 58 | 59 | std::string retValue = ""; 60 | if (gGlesObject == NULL) { 61 | return env->NewStringUTF(retValue.c_str()); 62 | } 63 | retValue = gGlesObject->GetGLESVersionInfo(); 64 | return env->NewStringUTF(retValue.c_str()); 65 | } 66 | 67 | #ifdef __cplusplus 68 | } 69 | #endif 70 | -------------------------------------------------------------------------------- /app/src/main/jni/jniCalls/myGLRenderer.cpp: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2016 Anand Muralidhar 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | #include 18 | #include "glesNative.h" 19 | 20 | 21 | #ifdef __cplusplus 22 | extern "C" { 23 | #endif 24 | 25 | extern GLESNative *gGlesObject; 26 | 27 | JNIEXPORT void JNICALL 28 | Java_com_anandmuralidhar_glescontextandroid_MyGLRenderer_DrawFrameNative(JNIEnv *env, 29 | jobject instance) { 30 | 31 | if (gGlesObject == NULL) { 32 | return; 33 | } 34 | gGlesObject->Render(); 35 | 36 | } 37 | 38 | JNIEXPORT void JNICALL 39 | Java_com_anandmuralidhar_glescontextandroid_MyGLRenderer_SurfaceCreatedNative(JNIEnv *env, 40 | jobject instance) { 41 | 42 | if (gGlesObject == NULL) { 43 | return; 44 | } 45 | gGlesObject->PerformGLInits(); 46 | 47 | } 48 | 49 | JNIEXPORT void JNICALL 50 | Java_com_anandmuralidhar_glescontextandroid_MyGLRenderer_SurfaceChangedNative(JNIEnv *env, 51 | jobject instance, 52 | jint width, 53 | jint height) { 54 | 55 | if (gGlesObject == NULL) { 56 | return; 57 | } 58 | gGlesObject->SetViewport(width, height); 59 | 60 | } 61 | 62 | #ifdef __cplusplus 63 | } 64 | #endif 65 | 66 | -------------------------------------------------------------------------------- /app/src/main/res/layout/gl_context.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 6 | 10 | 11 | 12 | 21 | 22 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/anandmuralidhar24/GLESContextAndroid/7c2a4c0d25c6960f8c6dfc7088f020fb08b7342e/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/anandmuralidhar24/GLESContextAndroid/7c2a4c0d25c6960f8c6dfc7088f020fb08b7342e/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/anandmuralidhar24/GLESContextAndroid/7c2a4c0d25c6960f8c6dfc7088f020fb08b7342e/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/anandmuralidhar24/GLESContextAndroid/7c2a4c0d25c6960f8c6dfc7088f020fb08b7342e/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/anandmuralidhar24/GLESContextAndroid/7c2a4c0d25c6960f8c6dfc7088f020fb08b7342e/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #3F51B5 4 | #303F9F 5 | #FF4081 6 | #FFFFFF 7 | 8 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | GLESContextAndroid 3 | 4 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | // Top-level build file where you can add configuration options common to all sub-projects/modules. 2 | 3 | buildscript { 4 | repositories { 5 | jcenter() 6 | } 7 | dependencies { 8 | classpath "com.android.tools.build:gradle-experimental:0.7.0-alpha4" 9 | 10 | // NOTE: Do not place your application dependencies here; they belong 11 | // in the individual module build.gradle files 12 | } 13 | } 14 | 15 | allprojects { 16 | repositories { 17 | jcenter() 18 | } 19 | } 20 | 21 | task clean(type: Delete) { 22 | delete rootProject.buildDir 23 | } 24 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/anandmuralidhar24/GLESContextAndroid/7c2a4c0d25c6960f8c6dfc7088f020fb08b7342e/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Mon Dec 28 10:00:20 PST 2015 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip 7 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 10 | DEFAULT_JVM_OPTS="" 11 | 12 | APP_NAME="Gradle" 13 | APP_BASE_NAME=`basename "$0"` 14 | 15 | # Use the maximum available, or set MAX_FD != -1 to use that value. 16 | MAX_FD="maximum" 17 | 18 | warn ( ) { 19 | echo "$*" 20 | } 21 | 22 | die ( ) { 23 | echo 24 | echo "$*" 25 | echo 26 | exit 1 27 | } 28 | 29 | # OS specific support (must be 'true' or 'false'). 30 | cygwin=false 31 | msys=false 32 | darwin=false 33 | case "`uname`" in 34 | CYGWIN* ) 35 | cygwin=true 36 | ;; 37 | Darwin* ) 38 | darwin=true 39 | ;; 40 | MINGW* ) 41 | msys=true 42 | ;; 43 | esac 44 | 45 | # Attempt to set APP_HOME 46 | # Resolve links: $0 may be a link 47 | PRG="$0" 48 | # Need this for relative symlinks. 49 | while [ -h "$PRG" ] ; do 50 | ls=`ls -ld "$PRG"` 51 | link=`expr "$ls" : '.*-> \(.*\)$'` 52 | if expr "$link" : '/.*' > /dev/null; then 53 | PRG="$link" 54 | else 55 | PRG=`dirname "$PRG"`"/$link" 56 | fi 57 | done 58 | SAVED="`pwd`" 59 | cd "`dirname \"$PRG\"`/" >/dev/null 60 | APP_HOME="`pwd -P`" 61 | cd "$SAVED" >/dev/null 62 | 63 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 64 | 65 | # Determine the Java command to use to start the JVM. 66 | if [ -n "$JAVA_HOME" ] ; then 67 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 68 | # IBM's JDK on AIX uses strange locations for the executables 69 | JAVACMD="$JAVA_HOME/jre/sh/java" 70 | else 71 | JAVACMD="$JAVA_HOME/bin/java" 72 | fi 73 | if [ ! -x "$JAVACMD" ] ; then 74 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 75 | 76 | Please set the JAVA_HOME variable in your environment to match the 77 | location of your Java installation." 78 | fi 79 | else 80 | JAVACMD="java" 81 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 82 | 83 | Please set the JAVA_HOME variable in your environment to match the 84 | location of your Java installation." 85 | fi 86 | 87 | # Increase the maximum file descriptors if we can. 88 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 89 | MAX_FD_LIMIT=`ulimit -H -n` 90 | if [ $? -eq 0 ] ; then 91 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 92 | MAX_FD="$MAX_FD_LIMIT" 93 | fi 94 | ulimit -n $MAX_FD 95 | if [ $? -ne 0 ] ; then 96 | warn "Could not set maximum file descriptor limit: $MAX_FD" 97 | fi 98 | else 99 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 100 | fi 101 | fi 102 | 103 | # For Darwin, add options to specify how the application appears in the dock 104 | if $darwin; then 105 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 106 | fi 107 | 108 | # For Cygwin, switch paths to Windows format before running java 109 | if $cygwin ; then 110 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 111 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 112 | JAVACMD=`cygpath --unix "$JAVACMD"` 113 | 114 | # We build the pattern for arguments to be converted via cygpath 115 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 116 | SEP="" 117 | for dir in $ROOTDIRSRAW ; do 118 | ROOTDIRS="$ROOTDIRS$SEP$dir" 119 | SEP="|" 120 | done 121 | OURCYGPATTERN="(^($ROOTDIRS))" 122 | # Add a user-defined pattern to the cygpath arguments 123 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 124 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 125 | fi 126 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 127 | i=0 128 | for arg in "$@" ; do 129 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 130 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 131 | 132 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 133 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 134 | else 135 | eval `echo args$i`="\"$arg\"" 136 | fi 137 | i=$((i+1)) 138 | done 139 | case $i in 140 | (0) set -- ;; 141 | (1) set -- "$args0" ;; 142 | (2) set -- "$args0" "$args1" ;; 143 | (3) set -- "$args0" "$args1" "$args2" ;; 144 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 145 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 146 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 147 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 148 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 149 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 150 | esac 151 | fi 152 | 153 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 154 | function splitJvmOpts() { 155 | JVM_OPTS=("$@") 156 | } 157 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 158 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 159 | 160 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 161 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /native_app_glue/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /native_app_glue/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.model.library' 2 | 3 | def ndkDir = System.getenv("ANDROID_NDK_HOME") 4 | def propertiesFile = project.rootProject.file('local.properties') 5 | if (propertiesFile.exists()) { 6 | Properties properties = new Properties() 7 | properties.load(propertiesFile.newDataInputStream()) 8 | ndkDir = properties.getProperty('ndk.dir') 9 | } 10 | 11 | model { 12 | android { 13 | compileSdkVersion = 23 14 | buildToolsVersion = '23.0.2' 15 | defaultConfig.with { 16 | minSdkVersion.apiLevel = 9 17 | targetSdkVersion.apiLevel = 23 18 | versionCode = 1 19 | versionName = '0.0.1' 20 | } 21 | ndk { 22 | moduleName = 'native_app_glue' 23 | ldLibs.addAll(['log', 'android']) 24 | ldFlags.add('-c') 25 | } 26 | sources { 27 | main { 28 | jni { 29 | source { 30 | srcDir "${ndkDir}/sources/android/native_app_glue" 31 | } 32 | exportedHeaders { 33 | srcDir "${ndkDir}/sources/android/native_app_glue" 34 | } 35 | } 36 | } 37 | } 38 | } 39 | } 40 | dependencies { 41 | compile 'com.android.support:appcompat-v7:23.+' 42 | } 43 | -------------------------------------------------------------------------------- /native_app_glue/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /home/anand/Android/Sdk/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /native_app_glue/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 5 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /ndk_helper/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /ndk_helper/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.model.library' 2 | 3 | def ndkDir = System.getenv("ANDROID_NDK_HOME") 4 | def propertiesFile = project.rootProject.file('local.properties') 5 | if (propertiesFile.exists()) { 6 | Properties properties = new Properties() 7 | properties.load(propertiesFile.newDataInputStream()) 8 | ndkDir = properties.getProperty('ndk.dir') 9 | } 10 | 11 | model { 12 | android { 13 | compileSdkVersion = 23 14 | buildToolsVersion = '23.0.2' 15 | defaultConfig.with { 16 | minSdkVersion.apiLevel = 9 17 | targetSdkVersion.apiLevel = 23 18 | versionCode = 1 19 | versionName = '0.0.1' 20 | } 21 | ndk { 22 | moduleName = 'ndk_helper' 23 | stl = 'gnustl_static' 24 | ldLibs.addAll(['log', 'android', 'EGL', 'GLESv2']) 25 | ldFlags.add('-c') 26 | } 27 | sources { 28 | main { 29 | jni { 30 | source { 31 | srcDir "${ndkDir}/sources/android/ndk_helper" 32 | } 33 | exportedHeaders { 34 | srcDir "${ndkDir}/sources/android/ndk_helper" 35 | } 36 | dependencies { 37 | project ':native_app_glue' linkage 'static' 38 | } 39 | } 40 | } 41 | } 42 | } 43 | } 44 | -------------------------------------------------------------------------------- /ndk_helper/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /home/anand/Android/Sdk/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /ndk_helper/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 5 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app', ':ndk_helper', ':native_app_glue' 2 | --------------------------------------------------------------------------------