libgdx SpriteBatch渲染到纹理

Question

是否可以在libGdx(Android/Desktop的Java引擎)中使用SpriteBatch渲染到纹理？如果是这样,怎么办？

基本上我想将所有内容渲染到512 x 256纹理的320 x 240区域,而不是缩放区域以适合屏幕(在横向模式下).这样我想消除当我独立缩放alpha混合纹理时发生的伪像.如果有任何其他方法来删除这些工件,请指出它们:)

还有libGdx的在线文档吗？

Answer 1

这个片段是在LibGDX论坛上发给我的,它完美无瑕.

private float m_fboScaler = 1.5f;
private boolean m_fboEnabled = true;
private FrameBuffer m_fbo = null;
private TextureRegion m_fboRegion = null;

public void render(SpriteBatch spriteBatch)
{
    int width = Gdx.graphics.getWidth();
    int height = Gdx.graphics.getHeight();

    if(m_fboEnabled)      // enable or disable the supersampling
    {                  
        if(m_fbo == null)
        {
            // m_fboScaler increase or decrease the antialiasing quality

            m_fbo = new FrameBuffer(Format.RGB565, (int)(width * m_fboScaler), (int)(height * m_fboScaler), false);
            m_fboRegion = new TextureRegion(m_fbo.getColorBufferTexture());
            m_fboRegion.flip(false, true);
        }

        m_fbo.begin();
    }

    // this is the main render function
    my_render_impl();

    if(m_fbo != null)
    {
        m_fbo.end();

        spriteBatch.begin();         
        spriteBatch.draw(m_fboRegion, 0, 0, width, height);               
        spriteBatch.end();
    }   
}