IndexBufferObjectClassTest.java :  » Game » libgdx » com » badlogic » gdx » tests » Android Open Source

/*
 * Copyright 2010 Mario Zechner (contact@badlogicgames.com), Nathan Sweet (admin@esotericsoftware.com)
 * 
 * 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.
 */

package com.badlogic.gdx.tests;

import com.badlogic.gdx.Files.FileType;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.graphics.GL11;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.Texture.TextureFilter;
import com.badlogic.gdx.graphics.Texture.TextureWrap;
import com.badlogic.gdx.graphics.VertexAttribute;
import com.badlogic.gdx.graphics.VertexAttributes;
import com.badlogic.gdx.graphics.glutils.IndexBufferObject;
import com.badlogic.gdx.graphics.glutils.VertexBufferObject;
import com.badlogic.gdx.tests.utils.GdxTest;

public class IndexBufferObjectClassTest extends GdxTest {
  Texture texture;
  VertexBufferObject vbo;
  IndexBufferObject ibo;

  @Override public boolean needsGL20 () {
    return false;
  }

  @Override public void dispose () {
    texture.dispose();
    vbo.dispose();
    ibo.dispose();
  }

  @Override public void render () {
    GL11 gl = Gdx.gl11;
    gl.glViewport(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
    gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

    gl.glEnable(GL10.GL_TEXTURE_2D);
    texture.bind();
    vbo.bind();
    ibo.bind();
    gl.glDrawElements(GL11.GL_TRIANGLES, 3, GL11.GL_UNSIGNED_SHORT, 0);
    ibo.unbind();
    vbo.unbind();
  }

  @Override public void create () {
    vbo = new VertexBufferObject(true, 3, new VertexAttribute(VertexAttributes.Usage.Position, 2, "a_Position"),
      new VertexAttribute(VertexAttributes.Usage.TextureCoordinates, 2, "a_TexCoords"), new VertexAttribute(
        VertexAttributes.Usage.ColorPacked, 4, "a_Color"));
    float[] vertices = new float[] {-1, -1, 0, 0, Color.toFloatBits(1f, 0f, 0f, 1f), 0, 1, 0.5f, 1.0f,
      Color.toFloatBits(0f, 1f, 0f, 1f), 1, -1, 1, 0, Color.toFloatBits(0f, 0f, 1f, 1f)};
    vbo.setVertices(vertices, 0, vertices.length);

    ibo = new IndexBufferObject(true, 3);
    ibo.setIndices(new short[] {0, 1, 2}, 0, 3);

    texture = new Texture(Gdx.files.internal("data/badlogic.jpg"));
  }

  @Override public void resume () {
    vbo.invalidate();
    ibo.invalidate();
  }
}