Java libgdx 逐像素绘制屏幕的最佳方式

Question

我最近开始使用 libgdx，需要在屏幕上逐个像素地绘制，想知道最有效/优化的方法是什么，这是我目前正在做的：

package com.mygdx.game;

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Pixmap;
import com.badlogic.gdx.graphics.Pixmap.Format;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class MyGdxGame extends ApplicationAdapter {

    private SpriteBatch batch;
    private Pixmap pixmap;
    private Texture tex;

    private final int screenWidth = 1280;
    private final int screenHeight = 720;

    @Override
    public void create() {
        batch = new SpriteBatch();
        pixmap = new Pixmap(
            screenWidth,
            screenHeight,
            Format.RGBA8888
        );
        tex = new Texture(pixmap);
    }

    @Override
    public void render() {
        for (int x = 0; x < screenWidth; x++) {
            for (int y = 0; y < screenHeight; y++) {
                pixmap.drawPixel(x, y, 0xFF0000FF);
            }
        }
        System.out.println(Gdx.graphics.getFramesPerSecond());

        tex.draw(pixmap, 0, 0);
        batch.begin();
        batch.draw(tex, 0, 0); //draw pixmap texture
        batch.end();
    }
}

这是我目前在我的整个项目上所做的，但我想这比共享整个代码更实用。