编辑 texture2d 以在遮罩上绘制的脚本在编辑器中有效，但在构建中无效

Question

我有一个脚本，它使用鼠标点的光线投射来绘制材质中的遮罩，以去除游戏中物品上的污垢，它在编辑器中运行良好，但在我构建之后它不起作用

        if (Input.GetMouseButton(0))
        {

            if (Physics.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition), out RaycastHit raycastHit))
            {
                Vector2 textureCoord = raycastHit.textureCoord;

                int pixelX = (int)(textureCoord.x * dirtMaskTexture.width);
                int pixelY = (int)(textureCoord.y * dirtMaskTexture.height);

                Vector2Int paintPixelPosition = new Vector2Int(pixelX, pixelY);
                //Debug.Log("UV: " + textureCoord + "; Pixels: " + paintPixelPosition);

                int paintPixelDistance = Mathf.Abs(paintPixelPosition.x - lastPaintPixelPosition.x) + Mathf.Abs(paintPixelPosition.y - lastPaintPixelPosition.y);
                int maxPaintDistance = 7;
                if (paintPixelDistance < maxPaintDistance)
                {
                    // Painting too close to last position
                    return;
                }
                lastPaintPixelPosition = paintPixelPosition;


                int pixelXOffset = pixelX - (dirtBrush.width / 2);
                int pixelYOffset = pixelY - (dirtBrush.height / 2);

                for (int x = 0; x < dirtBrush.width; x++)
                {
                    for (int y = 0; y < dirtBrush.height; y++)
                    {
                        Color pixelDirt = dirtBrush.GetPixel(x, y);
                        Color pixelDirtMask = dirtMaskTexture.GetPixel(pixelXOffset + x, pixelYOffset + y);

                        float removedAmount = pixelDirtMask.g - (pixelDirtMask.g * pixelDirt.g);
                        
                        dirtMaskTexture.SetPixel(
                            pixelXOffset + x,
                            pixelYOffset + y,
                            new Color(0, pixelDirtMask.g * pixelDirt.g, 0)
                        );
                    }
                }

                dirtMaskTexture.Apply();

            }