OpenGL ES 画三角形
上三角形：
public class GL2 extends Activity {private GLSurfaceView mGLSurfaceView;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);mGLSurfaceView = new GLSurfaceView(this);mGLSurfaceView.setRenderer(new Two());setContentView(mGLSurfaceView);}@Overrideprotected void onResume() {super.onResume();mGLSurfaceView.onResume();}@Overrideprotected void onPause() {super.onPause();mGLSurfaceView.onPause();}}class Two implements Renderer {private Triangle triangle;public Two() {triangle = new Triangle();}@Overridepublic void onDrawFrame(GL10 gl) {gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);gl.glLoadIdentity();gl.glTranslatef(0.0f, 0.0f, -6.0f);triangle.draw(gl);}@Overridepublic void onSurfaceCreated(GL10 gl, EGLConfig config) {gl.glShadeModel(GL10.GL_SMOOTH);gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);gl.glClearDepthf(1.0f);gl.glEnable(GL10.GL_DEPTH_TEST);gl.glDepthFunc(GL10.GL_LEQUAL);gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_NICEST);}@Overridepublic void onSurfaceChanged(GL10 gl, int width, int height) {if (height == 0) {height = 1;}gl.glViewport(0, 0, width, height);gl.glMatrixMode(GL10.GL_PROJECTION);gl.glLoadIdentity();GLU.gluPerspective(gl, 45.0f, (float) width / (float) height, 0.1f,100.0f);gl.glMatrixMode(GL10.GL_MODELVIEW);gl.glLoadIdentity();}}class Triangle {private FloatBuffer vertexBuffer;private float vertices[] = { 0.0f, 1.0f, 0.0f, -1.0f, -1.0f, 0.0f, 1.0f,-1.0f, 0.0f };public Triangle() {ByteBuffer byteBuf = ByteBuffer.allocateDirect(vertices.length * 4);byteBuf.order(ByteOrder.nativeOrder());vertexBuffer = byteBuf.asFloatBuffer();vertexBuffer.put(vertices);vertexBuffer.position(0);}public void draw(GL10 gl) {gl.glFrontFace(GL10.GL_CW);gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertexBuffer);gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, vertices.length / 3);gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);}}? 三角形与正方形差不多，注释参考上一篇：http://yuanyao.iteye.com/blog/782474