Android 中使用OpenGL ES进行2D开发（GLSurfaceView）

我们知道OpenGL一般是在C,C++中应用，那么Android如何跟OpenGL ES对接的呢？

是用GLSurfaceView，今天我们的主角

interface GLSurfaceView.Renderer {public void onSurfaceCreated(GL10 gl, EGLConfig config);public void onSurfaceChanged(GL10 gl, int width, int height);public void onDrawFrame(GL10 gl);}

在Android中有上面代码中涉及到的接口(interface)

现在来看下我们一个简单的示例的效果，整个红色的屏幕

我们来看下完整的代码 GLSurfaceViewTest.java, 路径src/com.waitingfy.android.glbasics/GLSurfaceViewTest.java

package com.waitingfy.android.glbasics;import javax.microedition.khronos.egl.EGLConfig;import javax.microedition.khronos.opengles.GL10;import android.app.Activity;import android.opengl.GLSurfaceView;import android.opengl.GLSurfaceView.Renderer;import android.os.Bundle;import android.util.Log;import android.view.Window;import android.view.WindowManager;public class GLSurfaceViewTest extends Activity {GLSurfaceView glView;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//去掉activity的标题，全屏显示requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);glView = new GLSurfaceView(this);glView.setRenderer(new SimpleRenderer());setContentView(glView);}@Overridepublic void onResume() {super.onPause();glView.onResume();}@Overridepublic void onPause() {super.onPause();glView.onPause();}static class SimpleRenderer implements Renderer {@Overridepublic void onSurfaceCreated(GL10 gl, EGLConfig config) {Log.d("GLSurfaceViewTest", "surface created");}@Overridepublic void onSurfaceChanged(GL10 gl, int width, int height) {Log.d("GLSurfaceViewTest", "surface changed: " + width + "x"+ height);}@Overridepublic void onDrawFrame(GL10 gl) {//设置颜色为红色（glClearColor(float red, float green, float blue, float alpha)gl.glClearColor(1, 0, 0, 1);gl.glClear(GL10.GL_COLOR_BUFFER_BIT);}}}

非常清晰的代码，好了有关GLSurfaceView的内容就到这里

下面是示例代码下载：gl-basics

文章源地址：
http://www.waitingfy.com/?p=28

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