问需要帮助- Monogame 2d水反射

EN

protected override void LoadContent()
    {
        spriteBatch = new SpriteBatch(GraphicsDevice);

        texture = Content.Load<Texture2D>("test");
        effect = Content.Load<Effect>("LinearFade");
        effect.Parameters["Visibility"].SetValue(0.7f);
    }

protected override void Draw(GameTime gameTime)
    {
        GraphicsDevice.Clear(Color.CornflowerBlue);

        spriteBatch.Begin(SpriteSortMode.Immediate, BlendState.AlphaBlend);
        //effect.CurrentTechnique.Passes[0].Apply();
        spriteBatch.Draw(texture, new Vector2(texturePos.X, texturePos.Y + texture.Height), null, Color.White * 0.5f, 0f, Vector2.Zero, 1, SpriteEffects.FlipVertically, 0f);
        spriteBatch.End();

        spriteBatch.Begin();
        spriteBatch.Draw(texture, texturePos, Color.White);
        spriteBatch.End();


        base.Draw(gameTime);
    }