Android GL10 Draw drawScreenSpaceQuad(GL10 gl)

Description

draw Screen Space Quad

License

Apache License

Declaration

public static void drawScreenSpaceQuad(GL10 gl) 

Method Source Code

//package com.java2s;
/*//from w ww. j a  va 2s  . c o m
 * Copyright 2010-2011 bodo, eyebex, ralph, spotter
 *
 * 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.
 */

import android.opengl.GLU;
import java.nio.ByteBuffer;
import javax.microedition.khronos.opengles.GL10;

public class Main {
    private static final byte WIDTH = 1, HEIGHT = 1;
    private static final ByteBuffer VERTICES = ByteBuffer.allocateDirect(8)
            .put((byte) 0).put((byte) 0).put((byte) 0).put(HEIGHT)
            .put(WIDTH).put(HEIGHT).put(WIDTH).put((byte) 0);

    public static void drawScreenSpaceQuad(GL10 gl) {
        gl.glMatrixMode(GL10.GL_PROJECTION);
        gl.glPushMatrix();
        gl.glLoadIdentity();
        GLU.gluOrtho2D(gl, 0, WIDTH, HEIGHT, 0);

        gl.glVertexPointer(2, GL10.GL_BYTE, 0, VERTICES);
        gl.glDrawArrays(GL10.GL_TRIANGLE_FAN, 0, 4);

        gl.glPopMatrix();
    }
}

Related

1. drawSquare(GL10 gl, float r, float g, float b, float a)
2. drawSquare(GL10 gl, float x, float y, float r, float g, float b, float a)