it is done

core/src/mindustry/graphics/Pixelator.java

@@ -0,0 +1,80 @@
+package mindustry.graphics;
+
+import arc.Core;
+import arc.graphics.Blending;
+import arc.graphics.Texture.TextureFilter;
+import arc.graphics.g2d.Draw;
+import arc.graphics.gl.FrameBuffer;
+import arc.util.Disposable;
+import mindustry.entities.type.Player;
+
+import static arc.Core.camera;
+import static arc.Core.graphics;
+import static mindustry.Vars.playerGroup;
+import static mindustry.Vars.renderer;
+
+public class Pixelator implements Disposable{
+    private FrameBuffer buffer = new FrameBuffer(2, 2);
+
+    {
+        buffer.getTexture().setFilter(TextureFilter.Nearest, TextureFilter.Nearest);
+    }
+
+    public void drawPixelate(){
+        float pre = renderer.getScale();
+        float scale = renderer.getScale();
+        scale = (int)scale;
+        renderer.setScale(scale);
+        camera.width = (int)camera.width;
+        camera.height = (int)camera.height;
+
+        boolean hadShields = Core.settings.getBool("animatedshields");
+        boolean hadWater = Core.settings.getBool("animatedwater");
+        Core.settings.put("animatedwater", false);
+        Core.settings.put("animatedshields", false);
+        graphics.clear(0f, 0f, 0f, 1f);
+
+        float px = Core.camera.position.x, py = Core.camera.position.y;
+        Core.camera.position.set((int)px + ((int)(camera.width) % 2 == 0 ? 0 : 0.5f), (int)py + ((int)(camera.height) % 2 == 0 ? 0 : 0.5f));
+
+        int w = (int)(Core.camera.width * renderer.landScale());
+        int h = (int)(Core.camera.height * renderer.landScale());
+
+        if(!graphics.isHidden() && (buffer.getWidth() != w || buffer.getHeight() != h)){
+            buffer.resize(w, h);
+        }
+
+        Draw.flush();
+        buffer.begin();
+        renderer.draw();
+
+        Draw.flush();
+        buffer.end();
+
+        Draw.blend(Blending.disabled);
+        Draw.rect(Draw.wrap(buffer.getTexture()), Core.camera.position.x, Core.camera.position.y, Core.camera.width, -Core.camera.height);
+        Draw.blend();
+
+        playerGroup.draw(p -> !p.isDead(), Player::drawName);
+
+        Core.camera.position.set(px, py);
+        Core.settings.put("animatedwater", hadWater);
+        Core.settings.put("animatedshields", hadShields);
+        renderer.setScale(pre);
+    }
+
+    public void rebind(){
+        if(enabled()){
+            buffer.begin();
+        }
+    }
+
+    public boolean enabled(){
+        return Core.settings.getBool("pixelate");
+    }
+
+    @Override
+    public void dispose(){
+        buffer.dispose();
+    }
+}