如何在libgdx中创建纹理平面

Question

我来自FlashBuilder，Flex，Flash开发领域，我正在努力研究如何通过LibGDX进入Android开发。

我已经完成了环境设置，学习了一些基础知识，但现在我正在研究如何渲染一个带有纹理的平面的尴尬时间。

我发现的大多数演示都是OpenGL ES2.0，但是我需要在两者上运行我的应用程序，所以我尝试在创建纹理平面时寻找OpenGL ES1.1教程但最终徘徊了几个小时。如果有人有任何建议吗？代码示例？教程？请告诉我。太棒了。

这是我到目前为止所获得的代码，但没有显示任何内容（libgdx演示图像被注释掉，所以我可以看到它是否呈现任何东西，但它没有）：

public class MyGdxGame implements ApplicationListener {
// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
private OrthographicCamera camera;
private SpriteBatch batch;
private Texture texture;
private Sprite sprite;

private ShaderProgram sp;
private Mesh mesh;
// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -


// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
@Override
public void create() {      
    float w = Gdx.graphics.getWidth();
    float h = Gdx.graphics.getHeight();

    camera = new OrthographicCamera(1, h/w);
    batch = new SpriteBatch();

    texture = new Texture(Gdx.files.internal("data/libgdx.png"));
    texture.setFilter(TextureFilter.Linear, TextureFilter.Linear);

    TextureRegion region = new TextureRegion(texture, 0, 0, 512, 275);

    sprite = new Sprite(region);
    sprite.setSize(0.9f, 0.9f * sprite.getHeight() / sprite.getWidth());
    sprite.setOrigin(sprite.getWidth()/2, sprite.getHeight()/2);
    sprite.setPosition(-sprite.getWidth()/2, -sprite.getHeight()/2);


    mesh = new Mesh(true, 3, 3, new VertexAttribute(Usage.Position, 3,"a_position"));
    mesh.setVertices(new float[] { 100f, 100f, 0, 
              400f, 100f, 0, 
              250, 400f, 0 });

     mesh.setIndices(new short[] { 0, 1, 2 });
     tex = new Texture(Gdx.files.internal("data/libgdx.png"));
}
// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -



private Texture tex;




// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
@Override
public void render() {
    // Set bg
    Gdx.gl.glClearColor(1, 1, 1, 1);
    Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

    batch.setProjectionMatrix(camera.combined);


    Gdx.gl10.glMatrixMode(GL10.GL_PROJECTION);
    Gdx.gl10.glLoadIdentity();
    Gdx.gl10.glMatrixMode(GL10.GL_MODELVIEW);
    Gdx.gl10.glLoadIdentity();
    mesh.render(GL10.GL_TRIANGLES, 0, 3);

    batch.begin();
    //sprite.draw(batch);
    //mesh.render(sp, GL10.GL_TRIANGLES);
    batch.draw(tex, 10, 10);
    batch.end();

    // Results in white window output only...
}
// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -





// From a previous tutorial attempt didn't show anything
public Mesh createFullScreenQuad() {

      float[] verts = new float[20];
      int i = 0;

      verts[i++] = -1; // x1
      verts[i++] = -1; // y1
      verts[i++] = 0;
      verts[i++] = 0f; // u1
      verts[i++] = 0f; // v1

      verts[i++] = 1f; // x2
      verts[i++] = -1; // y2
      verts[i++] = 0;
      verts[i++] = 1f; // u2
      verts[i++] = 0f; // v2

      verts[i++] = 1f; // x3
      verts[i++] = 1f; // y2
      verts[i++] = 0;
      verts[i++] = 1f; // u3
      verts[i++] = 1f; // v3

      verts[i++] = -1; // x4
      verts[i++] = 1f; // y4
      verts[i++] = 0;
      verts[i++] = 0f; // u4
      verts[i++] = 1f; // v4

      Mesh mesh = new Mesh( true, 4, 0,  // static mesh with 4 vertices and no indices
        new VertexAttribute( Usage.Position, 3, ShaderProgram.POSITION_ATTRIBUTE ),
        new VertexAttribute( Usage.TextureCoordinates, 2, ShaderProgram.TEXCOORD_ATTRIBUTE+"0" ) );

      mesh.setVertices( verts );
      return mesh;
    }














// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
@Override
public void resize(int width, int height) {
}
// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -



// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
@Override
public void pause() {
}
// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -



// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
@Override
public void resume() {
}
// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -



// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
@Override
public void dispose() {
    batch.dispose();
    texture.dispose();
}
// -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -

}