Add a Java API for OpenGL ES 2.0.
Currently this API is hidden.
Add a test program.
diff --git a/opengl/tests/gl2_java/Android.mk b/opengl/tests/gl2_java/Android.mk
new file mode 100644
index 0000000..34f4aee
--- /dev/null
+++ b/opengl/tests/gl2_java/Android.mk
@@ -0,0 +1,18 @@
+#########################################################################
+# OpenGL ES 2.0 Java sample
+#########################################################################
+
+TOP_LOCAL_PATH:= $(call my-dir)
+
+# Build activity
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SRC_FILES := $(call all-subdir-java-files)
+
+LOCAL_PACKAGE_NAME := GL2Java
+
+include $(BUILD_PACKAGE)
diff --git a/opengl/tests/gl2_java/AndroidManifest.xml b/opengl/tests/gl2_java/AndroidManifest.xml
new file mode 100644
index 0000000..d666e6c
--- /dev/null
+++ b/opengl/tests/gl2_java/AndroidManifest.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2009, The Android Open Source Project
+**
+** 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.
+*/
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+ package="com.android.gl2java">
+ <application
+ android:label="@string/gl2java_activity">
+ <activity android:name="GL2JavaActivity"
+ android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
+ android:launchMode="singleTask"
+ android:configChanges="orientation|keyboardHidden">
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN" />
+ <category android:name="android.intent.category.LAUNCHER" />
+ </intent-filter>
+ </activity>
+ </application>
+</manifest>
diff --git a/opengl/tests/gl2_java/res/values/strings.xml b/opengl/tests/gl2_java/res/values/strings.xml
new file mode 100644
index 0000000..d718b1d
--- /dev/null
+++ b/opengl/tests/gl2_java/res/values/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2006, The Android Open Source Project
+**
+** 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.
+*/
+-->
+
+<!-- This file contains resource definitions for displayed strings, allowing
+ them to be changed based on the locale and options. -->
+
+<resources>
+ <!-- Simple strings. -->
+ <string name="gl2java_activity">GL2Java</string>
+
+</resources>
+
diff --git a/opengl/tests/gl2_java/src/com/android/gl2java/GL2JavaActivity.java b/opengl/tests/gl2_java/src/com/android/gl2java/GL2JavaActivity.java
new file mode 100644
index 0000000..37654fb
--- /dev/null
+++ b/opengl/tests/gl2_java/src/com/android/gl2java/GL2JavaActivity.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * 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.
+ */
+
+package com.android.gl2java;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.WindowManager;
+
+import java.io.File;
+
+
+public class GL2JavaActivity extends Activity {
+
+ GL2JavaView mView;
+
+ @Override protected void onCreate(Bundle icicle) {
+ super.onCreate(icicle);
+ mView = new GL2JavaView(getApplication());
+ setContentView(mView);
+ }
+
+ @Override protected void onPause() {
+ super.onPause();
+ mView.onPause();
+ }
+
+ @Override protected void onResume() {
+ super.onResume();
+ mView.onResume();
+ }
+}
diff --git a/opengl/tests/gl2_java/src/com/android/gl2java/GL2JavaView.java b/opengl/tests/gl2_java/src/com/android/gl2java/GL2JavaView.java
new file mode 100644
index 0000000..0fb7a81
--- /dev/null
+++ b/opengl/tests/gl2_java/src/com/android/gl2java/GL2JavaView.java
@@ -0,0 +1,386 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * 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.
+ */
+
+package com.android.gl2java;
+
+import android.content.Context;
+import android.opengl.GLSurfaceView;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+
+import javax.microedition.khronos.egl.EGL10;
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.egl.EGLContext;
+import javax.microedition.khronos.egl.EGLDisplay;
+import javax.microedition.khronos.opengles.GL10;
+
+import android.opengl.GLES20;
+
+/**
+ * An implementation of SurfaceView that uses the dedicated surface for
+ * displaying an OpenGL animation. This allows the animation to run in a
+ * separate thread, without requiring that it be driven by the update mechanism
+ * of the view hierarchy.
+ *
+ * The application-specific rendering code is delegated to a GLView.Renderer
+ * instance.
+ */
+class GL2JavaView extends GLSurfaceView {
+ private static String TAG = "GL2JavaView";
+
+ public GL2JavaView(Context context) {
+ super(context);
+ init(false, 0, 0);
+ }
+
+ public GL2JavaView(Context context, boolean translucent, int depth, int stencil) {
+ super(context);
+ init(translucent, depth, stencil);
+ }
+
+ private void init(boolean translucent, int depth, int stencil) {
+ setEGLContextFactory(new ContextFactory());
+ setEGLConfigChooser( translucent ?
+ new ConfigChooser(8,8,8,8, depth, stencil) :
+ new ConfigChooser(5,6,5,0, depth, stencil));
+ setRenderer(new Renderer());
+ }
+
+ private static class ContextFactory implements GLSurfaceView.EGLContextFactory {
+ private static int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
+ public EGLContext createContext(EGL10 egl, EGLDisplay display, EGLConfig eglConfig) {
+ Log.w(TAG, "creating OpenGL ES 2.0 context");
+ checkEglError("Before eglCreateContext", egl);
+ int[] attrib_list = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE };
+ EGLContext context = egl.eglCreateContext(display, eglConfig, EGL10.EGL_NO_CONTEXT, attrib_list);
+ checkEglError("After eglCreateContext", egl);
+ return context;
+ }
+
+ public void destroyContext(EGL10 egl, EGLDisplay display, EGLContext context) {
+ egl.eglDestroyContext(display, context);
+ }
+ }
+
+ private static void checkEglError(String prompt, EGL10 egl) {
+ int error;
+ while ((error = egl.eglGetError()) != EGL10.EGL_SUCCESS) {
+ Log.e(TAG, String.format("%s: EGL error: 0x%x", prompt, error));
+ }
+ }
+
+ private static class ConfigChooser implements GLSurfaceView.EGLConfigChooser {
+ private static int EGL_OPENGL_ES2_BIT = 4;
+ private static int[] s_configAttribs2 =
+ {
+ EGL10.EGL_RED_SIZE, 4,
+ EGL10.EGL_GREEN_SIZE, 4,
+ EGL10.EGL_BLUE_SIZE, 4,
+ EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+ EGL10.EGL_NONE
+ };
+
+ public ConfigChooser(int r, int g, int b, int a, int depth, int stencil) {
+ mRedSize = r;
+ mGreenSize = g;
+ mBlueSize = b;
+ mAlphaSize = a;
+ mDepthSize = depth;
+ mStencilSize = stencil;
+ }
+
+ public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) {
+
+ int[] num_config = new int[1];
+ egl.eglChooseConfig(display, s_configAttribs2, null, 0, num_config);
+
+ int numConfigs = num_config[0];
+
+ if (numConfigs <= 0) {
+ throw new IllegalArgumentException("No configs match configSpec");
+ }
+ EGLConfig[] configs = new EGLConfig[numConfigs];
+ egl.eglChooseConfig(display, s_configAttribs2, configs, numConfigs, num_config);
+ // printConfigs(egl, display, configs);
+ return chooseConfig(egl, display, configs);
+ }
+
+ public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display,
+ EGLConfig[] configs) {
+ EGLConfig closestConfig = null;
+ int closestDistance = 1000;
+ for(EGLConfig config : configs) {
+ int d = findConfigAttrib(egl, display, config,
+ EGL10.EGL_DEPTH_SIZE, 0);
+ int s = findConfigAttrib(egl, display, config,
+ EGL10.EGL_STENCIL_SIZE, 0);
+ if (d >= mDepthSize && s>= mStencilSize) {
+ int r = findConfigAttrib(egl, display, config,
+ EGL10.EGL_RED_SIZE, 0);
+ int g = findConfigAttrib(egl, display, config,
+ EGL10.EGL_GREEN_SIZE, 0);
+ int b = findConfigAttrib(egl, display, config,
+ EGL10.EGL_BLUE_SIZE, 0);
+ int a = findConfigAttrib(egl, display, config,
+ EGL10.EGL_ALPHA_SIZE, 0);
+ int distance = Math.abs(r - mRedSize)
+ + Math.abs(g - mGreenSize)
+ + Math.abs(b - mBlueSize)
+ + Math.abs(a - mAlphaSize);
+ if (distance < closestDistance) {
+ closestDistance = distance;
+ closestConfig = config;
+ }
+ }
+ }
+ return closestConfig;
+ }
+
+ private int findConfigAttrib(EGL10 egl, EGLDisplay display,
+ EGLConfig config, int attribute, int defaultValue) {
+
+ if (egl.eglGetConfigAttrib(display, config, attribute, mValue)) {
+ return mValue[0];
+ }
+ return defaultValue;
+ }
+
+ private void printConfigs(EGL10 egl, EGLDisplay display,
+ EGLConfig[] configs) {
+ int numConfigs = configs.length;
+ Log.w(TAG, String.format("%d configurations", numConfigs));
+ for (int i = 0; i < numConfigs; i++) {
+ Log.w(TAG, String.format("Configuration %d:\n", i));
+ printConfig(egl, display, configs[i]);
+ }
+ }
+
+ private void printConfig(EGL10 egl, EGLDisplay display,
+ EGLConfig config) {
+ int[] attributes = {
+ EGL10.EGL_BUFFER_SIZE,
+ EGL10.EGL_ALPHA_SIZE,
+ EGL10.EGL_BLUE_SIZE,
+ EGL10.EGL_GREEN_SIZE,
+ EGL10.EGL_RED_SIZE,
+ EGL10.EGL_DEPTH_SIZE,
+ EGL10.EGL_STENCIL_SIZE,
+ EGL10.EGL_CONFIG_CAVEAT,
+ EGL10.EGL_CONFIG_ID,
+ EGL10.EGL_LEVEL,
+ EGL10.EGL_MAX_PBUFFER_HEIGHT,
+ EGL10.EGL_MAX_PBUFFER_PIXELS,
+ EGL10.EGL_MAX_PBUFFER_WIDTH,
+ EGL10.EGL_NATIVE_RENDERABLE,
+ EGL10.EGL_NATIVE_VISUAL_ID,
+ EGL10.EGL_NATIVE_VISUAL_TYPE,
+ 0x3030, // EGL10.EGL_PRESERVED_RESOURCES,
+ EGL10.EGL_SAMPLES,
+ EGL10.EGL_SAMPLE_BUFFERS,
+ EGL10.EGL_SURFACE_TYPE,
+ EGL10.EGL_TRANSPARENT_TYPE,
+ EGL10.EGL_TRANSPARENT_RED_VALUE,
+ EGL10.EGL_TRANSPARENT_GREEN_VALUE,
+ EGL10.EGL_TRANSPARENT_BLUE_VALUE,
+ 0x3039, // EGL10.EGL_BIND_TO_TEXTURE_RGB,
+ 0x303A, // EGL10.EGL_BIND_TO_TEXTURE_RGBA,
+ 0x303B, // EGL10.EGL_MIN_SWAP_INTERVAL,
+ 0x303C, // EGL10.EGL_MAX_SWAP_INTERVAL,
+ EGL10.EGL_LUMINANCE_SIZE,
+ EGL10.EGL_ALPHA_MASK_SIZE,
+ EGL10.EGL_COLOR_BUFFER_TYPE,
+ EGL10.EGL_RENDERABLE_TYPE,
+ 0x3042 // EGL10.EGL_CONFORMANT
+ };
+ String[] names = {
+ "EGL_BUFFER_SIZE",
+ "EGL_ALPHA_SIZE",
+ "EGL_BLUE_SIZE",
+ "EGL_GREEN_SIZE",
+ "EGL_RED_SIZE",
+ "EGL_DEPTH_SIZE",
+ "EGL_STENCIL_SIZE",
+ "EGL_CONFIG_CAVEAT",
+ "EGL_CONFIG_ID",
+ "EGL_LEVEL",
+ "EGL_MAX_PBUFFER_HEIGHT",
+ "EGL_MAX_PBUFFER_PIXELS",
+ "EGL_MAX_PBUFFER_WIDTH",
+ "EGL_NATIVE_RENDERABLE",
+ "EGL_NATIVE_VISUAL_ID",
+ "EGL_NATIVE_VISUAL_TYPE",
+ "EGL_PRESERVED_RESOURCES",
+ "EGL_SAMPLES",
+ "EGL_SAMPLE_BUFFERS",
+ "EGL_SURFACE_TYPE",
+ "EGL_TRANSPARENT_TYPE",
+ "EGL_TRANSPARENT_RED_VALUE",
+ "EGL_TRANSPARENT_GREEN_VALUE",
+ "EGL_TRANSPARENT_BLUE_VALUE",
+ "EGL_BIND_TO_TEXTURE_RGB",
+ "EGL_BIND_TO_TEXTURE_RGBA",
+ "EGL_MIN_SWAP_INTERVAL",
+ "EGL_MAX_SWAP_INTERVAL",
+ "EGL_LUMINANCE_SIZE",
+ "EGL_ALPHA_MASK_SIZE",
+ "EGL_COLOR_BUFFER_TYPE",
+ "EGL_RENDERABLE_TYPE",
+ "EGL_CONFORMANT"
+ };
+ int[] value = new int[1];
+ for (int i = 0; i < attributes.length; i++) {
+ int attribute = attributes[i];
+ String name = names[i];
+ if ( egl.eglGetConfigAttrib(display, config, attribute, value)) {
+ Log.w(TAG, String.format(" %s: %d\n", name, value[0]));
+ } else {
+ // Log.w(TAG, String.format(" %s: failed\n", name));
+ while (egl.eglGetError() != EGL10.EGL_SUCCESS);
+ }
+ }
+ }
+
+ // Subclasses can adjust these values:
+ protected int mRedSize;
+ protected int mGreenSize;
+ protected int mBlueSize;
+ protected int mAlphaSize;
+ protected int mDepthSize;
+ protected int mStencilSize;
+ private int[] mValue = new int[1];
+ }
+
+ private static class Renderer implements GLSurfaceView.Renderer {
+
+ public Renderer() {
+ mTriangleVertices = ByteBuffer.allocateDirect(mTriangleVerticesData.length * 4)
+ .order(ByteOrder.nativeOrder()).asFloatBuffer();
+ mTriangleVertices.put(mTriangleVerticesData).position(0);
+ }
+
+ public void onDrawFrame(GL10 gl) {
+ GLES20.glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
+ GLES20.glClear( GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);
+ GLES20.glUseProgram(mProgram);
+ checkGlError("glUseProgram");
+
+ GLES20.glVertexAttribPointer(mvPositionHandle, 2, GLES20.GL_FLOAT, false, 0, mTriangleVertices);
+ checkGlError("glVertexAttribPointer");
+ GLES20.glEnableVertexAttribArray(mvPositionHandle);
+ checkGlError("glEnableVertexAttribArray");
+ GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, 3);
+ checkGlError("glDrawArrays");
+
+ }
+
+ public void onSurfaceChanged(GL10 gl, int width, int height) {
+ GLES20.glViewport(0, 0, width, height);
+ }
+
+ public void onSurfaceCreated(GL10 gl, EGLConfig config) {
+ mProgram = createProgram(mVertexShader, mFragmentShader);
+ if (mProgram == 0) {
+ return;
+ }
+ mvPositionHandle = GLES20.glGetAttribLocation(mProgram, "vPosition");
+ checkGlError("glGetAttribLocation");
+ if (mvPositionHandle == -1) {
+ throw new RuntimeException("Could not get attrib location for vPosition");
+ }
+ }
+
+ private int loadShader(int shaderType, String source) {
+ int shader = GLES20.glCreateShader(shaderType);
+ if (shader != 0) {
+ GLES20.glShaderSource(shader, source);
+ GLES20.glCompileShader(shader);
+ int[] compiled = new int[1];
+ GLES20.glGetShaderiv(shader, GLES20.GL_COMPILE_STATUS, compiled, 0);
+ if (compiled[0] == 0) {
+ Log.e(TAG, "Could not compile shader " + shaderType + ":");
+ Log.e(TAG, GLES20.glGetShaderInfoLog(shader));
+ GLES20.glDeleteShader(shader);
+ shader = 0;
+ }
+ }
+ return shader;
+ }
+
+ private int createProgram(String vertexSource, String fragmentSource) {
+ int vertexShader = loadShader(GLES20.GL_VERTEX_SHADER, vertexSource);
+ if (vertexShader == 0) {
+ return 0;
+ }
+
+ int pixelShader = loadShader(GLES20.GL_FRAGMENT_SHADER, fragmentSource);
+ if (pixelShader == 0) {
+ return 0;
+ }
+
+ int program = GLES20.glCreateProgram();
+ if (program != 0) {
+ GLES20.glAttachShader(program, vertexShader);
+ checkGlError("glAttachShader");
+ GLES20.glAttachShader(program, pixelShader);
+ checkGlError("glAttachShader");
+ GLES20.glLinkProgram(program);
+ int[] linkStatus = new int[1];
+ GLES20.glGetProgramiv(program, GLES20.GL_LINK_STATUS, linkStatus, 0);
+ if (linkStatus[0] != GLES20.GL_TRUE) {
+ Log.e(TAG, "Could not link program: ");
+ Log.e(TAG, GLES20.glGetProgramInfoLog(program));
+ GLES20.glDeleteProgram(program);
+ program = 0;
+ }
+ }
+ return program;
+ }
+
+ private void checkGlError(String op) {
+ int error;
+ while ((error = GLES20.glGetError()) != GLES20.GL_NO_ERROR) {
+ Log.e(TAG, op + ": glError " + error);
+ throw new RuntimeException(op + ": glError " + error);
+ }
+ }
+
+ private final float[] mTriangleVerticesData = { 0.0f, 0.5f, -0.5f, -0.5f,
+ 0.5f, -0.5f };
+
+ private FloatBuffer mTriangleVertices;
+
+ private final String mVertexShader = "attribute vec4 vPosition;\n"
+ + "void main() {\n"
+ + " gl_Position = vPosition;\n"
+ + "}\n";
+
+ private final String mFragmentShader = "precision mediump float;\n"
+ + "void main() {\n"
+ + " gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
+ + "}\n";
+
+ private int mProgram;
+ private int mvPositionHandle;
+
+ }
+}
+