Android Open Source - clash_of_balls Vertex Buffer Float

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From Project

Back to project page clash_of_balls.

License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright (C) 2012-2013 Hans Hardmeier <hanshardmeier@gmail.com>
 * Copyright (C) 2012-2013 Andrin Jenal/*from   w ww  .  ja va  2  s  .  c  om*/
 * Copyright (C) 2012-2013 Beat Kng <beat-kueng@gmx.net>
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 3 of the License.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */
package com.sapos_aplastados.game.clash_of_balls;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;

import android.opengl.GLES20;

/**
 * Contains an array of floats to be used as shader input
 *
 */

public class VertexBufferFloat {
  private FloatBuffer m_data;
  private static final int bytes_per_float = 4;
  private final int m_num_components_per_item;
  
  public static final float[] sprite_position_data = new float[] 
      {
      0.0f, 0.0f, 0.0f, // triangle strip: bottom left start, clockwise
      0.0f, 1.0f, 0.0f,
      1.0f, 0.0f, 0.0f,
      1.0f, 1.0f, 0.0f
      };
  
  public static final float[] sprite_tex_coords = new float[] 
      { 
      0.0f, 0.0f, // triangle strip: bottom left start, clockwise
      0.0f, 1.0f,
      1.0f, 0.0f,
      1.0f, 1.0f
      };
  
  public VertexBufferFloat(float[] data, int num_components_per_item) {
    m_num_components_per_item = num_components_per_item;
    m_data = ByteBuffer.allocateDirect(
        data.length * bytes_per_float)
        .order(ByteOrder.nativeOrder()).asFloatBuffer();
    m_data.put(data).position(0);
  }
  
  public FloatBuffer data() { return m_data; }
  
  
  //send data to shader
  public void apply(int shader_attr_handle) {
      // Pass in the texture coordinate information
    m_data.position(0);
      GLES20.glVertexAttribPointer(shader_attr_handle
          , m_num_components_per_item, GLES20.GL_FLOAT, false, 
          0, m_data);

      GLES20.glEnableVertexAttribArray(shader_attr_handle);
  }
}

Java Source Code List

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