import android.content.Context;
import android.opengl.GLSurfaceView;public class DemoGLSurfaceView extends GLSurfaceView {public DemoGLSurfaceView(Context context) {super(context);DemoGLRenderer renderer = new DemoGLRenderer();setRenderer(renderer);}}

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;import android.opengl.GLSurfaceView.Renderer;public class DemoGLRenderer implements Renderer {private float[] triangleData = new float[] {0.1f, 0.6f , 0.0f , // 上顶点-0.3f, 0.0f , 0.0f , // 左顶点0.3f, 0.1f , 0.0f  // 右顶点
    };private FloatBuffer triangleDataBuffer;private float[] recData = new float[] {0.4f, 0.4f , 0.0f, // 右上顶点0.4f, -0.4f , 0.0f, // 右下顶点-0.4f, 0.4f , 0.0f, // 左上顶点    -0.4f, -0.4f , 0.0f // 左下顶点
    };private FloatBuffer recDataBuffer;private float[] pentacle = new float[]{0.4f , 0.4f , 0.0f,-0.2f , 0.3f , 0.0f,0.5f , 0.0f , 0f,-0.4f , 0.0f , 0f,-0.1f, -0.3f , 0f};private FloatBuffer pentacleDataBuffer;public DemoGLRenderer() {ByteBuffer byteBuf = ByteBuffer.allocateDirect(triangleData.length * 4);byteBuf.order(ByteOrder.nativeOrder());triangleDataBuffer = byteBuf.asFloatBuffer();triangleDataBuffer.put(triangleData);triangleDataBuffer.position(0);byteBuf = ByteBuffer.allocateDirect(recData.length * 4);byteBuf.order(ByteOrder.nativeOrder());recDataBuffer = byteBuf.asFloatBuffer();recDataBuffer.put(recData);recDataBuffer.position(0);byteBuf = ByteBuffer.allocateDirect(pentacle.length * 4);byteBuf.order(ByteOrder.nativeOrder());pentacleDataBuffer = byteBuf.asFloatBuffer();pentacleDataBuffer.put(pentacle);pentacleDataBuffer.position(0);}@Overridepublic void onDrawFrame(GL10 gl) {// 清除屏幕缓存和深度缓存gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);// 启用顶点座标数据
        gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);// 启用顶点颜色数据
        gl.glEnableClientState(GL10.GL_COLOR_ARRAY);// 设置当前矩阵堆栈为模型堆栈，
        gl.glMatrixMode(GL10.GL_MODELVIEW);// 重置当前的模型视图矩阵
        gl.glLoadIdentity();gl.glTranslatef(-0.32f, 0.35f, -1f);// 设置顶点的位置数据gl.glVertexPointer(3, GL10.GL_FLOAT, 0, triangleDataBuffer);// 根据顶点数据绘制平面图形gl.glDrawArrays(GL10.GL_TRIANGLES, 0, 3);// 重置当前的模型视图矩阵
        gl.glLoadIdentity();gl.glTranslatef(0.6f, 0.8f, -1.5f);// 设置顶点的位置数据gl.glVertexPointer(3, GL10.GL_FLOAT, 0, recDataBuffer);// 根据顶点数据绘制平面图形gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 4);// 重置当前的模型视图矩阵
        gl.glLoadIdentity();gl.glTranslatef(0.4f, -0.5f, -1.5f);gl.glDisableClientState(GL10.GL_COLOR_ARRAY);// 设置顶点的位置数据gl.glVertexPointer(3, GL10.GL_FLOAT, 0, pentacleDataBuffer);// 根据顶点数据绘制平面图形gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 5);gl.glFinish();gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}@Overridepublic void onSurfaceChanged(GL10 gl, int width, int height) {// 设置3D视窗的大小及位置gl.glViewport(0, 0, width, height);// 将当前矩阵模式设为投影矩阵
        gl.glMatrixMode(GL10.GL_PROJECTION);// 初始化单位矩阵
        gl.glLoadIdentity();// 计算透视视窗的宽度、高度比float ratio = (float) width / height;// 调用此方法设置透视视窗的空间大小。gl.glFrustumf(-ratio, ratio, -1, 1, 1, 10);}@Overridepublic void onSurfaceCreated(GL10 gl, EGLConfig config) {// 关闭抗抖动
        gl.glDisable(GL10.GL_DITHER);// 设置系统对透视进行修正
        gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_FASTEST);gl.glClearColor(0, 0, 0, 0);// 设置阴影平滑模式
        gl.glShadeModel(GL10.GL_SMOOTH);// 启用深度测试
        gl.glEnable(GL10.GL_DEPTH_TEST);// 设置深度测试的类型
        gl.glDepthFunc(GL10.GL_LEQUAL);}}

import com.wisher.opengl.surfaceview.DemoGLSurfaceView;import android.app.Activity;
import android.os.Bundle;public class DemoActivity01 extends Activity {private DemoGLSurfaceView view;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);view = new DemoGLSurfaceView(this);setContentView(view);}
}