我正在尝试使用GPUImage框架的GPUImagePoissonBlendFilter在我的脸部混合应用程序中混合两个脸部。这是我的代码。-(void)applyPoissonBlendToImage:(UIImage*)rearFacewithImage:(UIImage*)frontFace{GPUImagePicture*picture1=[[GPUImagePicturealloc]initWithImage:rearFace];GPUImagePicture*picture2=[[GPUImagePicturealloc]initWithImage:frontFace];G