cocos2dx摄像头获取显示没有红色

Cocos2d-x
#1

用opencv打开电脑摄像头，

    Texture2D::PixelFormat _renderFormat=  Texture2D::PixelFormat::RGB888;
Texture2D * m_texture = new Texture2D; 
m_texture->initWithData(
	frame.data,
	camera_width * camera_height*3,
	_renderFormat,
	camera_width,
	camera_height,
        cocos2d::Size(camera_width, camera_height) );  
m_sprite->setTexture(m_texture);

显示出来的图片没有红色是什么原因

#2

r b 互换