java – 在Libgdx中实现简单运动模糊的意外结果

在我的桌面上渲染我的预期.

不像我预期的那样在我的Galaxy nexus上渲染.

在渲染期间,圆形纹理绘制在for循环中,并且使用在圆圈之前绘制的0,0f的RGBA的像素图来实现效果.

screenClearSprite创建

Pixmap screenClearPixmap = new Pixmap(256,256,Format.RGBA8888);
screenClearPixmap.setColor(Color.rgba8888(0,0.1f));
screenClearPixmap.fillRectangle(0,256);
screenClearTexture = new Texture(screenClearPixmap);
screenClearSprite = new Sprite(screenClearTexture);
screenClearSprite.setSize(screenWidth,screenHeight);
screenClearPixmap.dispose();

给予

batch.begin();
font.draw(batch,"fps:" + Gdx.graphics.getFramesPerSecond(),20);
screenClearSprite.draw(batch);
for (int i = 0; i < circleBodies.size(); i++) {
    tempPos = circleBodies.get(i).getPosition();
    batch.draw(circleTexture,(tempPos.x * SCALE) + screenWidthHalf
            - circleSizeHalf,(tempPos.y * SCALE) + screenHeightHalf
            - circleSizeHalf);
}
batch.end();

那我做错了什么？也许有更好的方式来获得运动的“运动模糊”效果？