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copied!<p>ok.. ı found a way to solve the problem, ı think.. </p> <pre><code>//this is our Square class public class Square { private FloatBuffer vertexBuffer; // buffer holding the vertices private float vertices[] = { -0.3f, -0.3f, 0.0f, // 0. left-bottom 0.3f, -0.3f, 0.0f, // 1. right-bottom -0.3f, 0.3f, 0.0f, // 2. left-top 0.3f, 0.3f, 0.0f // 3. right-top }; public Square() { // a float has 4 bytes so we allocate for each coordinate 4 bytes ByteBuffer vertexByteBuffer = ByteBuffer.allocateDirect(vertices.length * 4); vertexByteBuffer.order(ByteOrder.nativeOrder()); // allocates the memory from the byte buffer vertexBuffer = vertexByteBuffer.asFloatBuffer(); // fill the vertexBuffer with the vertices vertexBuffer.put(vertices); // set the cursor position to the beginning of the buffer vertexBuffer.position(0); } /** The draw method for the square with the GL context */ public void draw(javax.microedition.khronos.opengles.GL10 gl) { gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); // set the colour for the square gl.glColor4f(1.0f, 0.0f, 0.0f, 0.0f); //red // Point to our vertex buffer gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertexBuffer); // Draw the vertices as triangle strip gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, vertices.length / 3); //Disable the client state before leaving gl.glDisableClientState(GL10.GL_VERTEX_ARRAY); } } // and this is our renderer class public class MyRenderer implements GLSurfaceView.Renderer { // the square to be drawn private Square square; public MyRenderer() { this.square = new Square(); @Override public void onDrawFrame(GL10 gl) { // clear Screen and Depth Buffer gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT); // Reset the Modelview Matrix gl.glLoadIdentity(); // Drawing gl.glTranslatef(0.0f, 0.0f, -5.0f); // Draw the square square.draw(gl); } @Override public void onSurfaceChanged(GL10 gl, int width, int height) { if(height == 0) { //Prevent A Divide By Zero By height = 1; //Making Height Equal One } gl.glViewport(0, 0, width, height); //Reset The Current Viewport gl.glMatrixMode(GL10.GL_PROJECTION); //Select The Projection Matrix gl.glLoadIdentity(); //Reset The Projection Matrix //Calculate The Aspect Ratio Of The Window GLU.gluPerspective(gl, 45.0f, (float)width / (float)height, 0.1f, 100.0f); gl.glMatrixMode(GL10.GL_MODELVIEW); //Select The Modelview Matrix gl.glLoadIdentity(); //Reset The Modelview Matrix } @Override public void onSurfaceCreated(GL10 gl, EGLConfig config) { } } </code></pre>

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