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无法为类型为'(UInt32)'的参数列表调用类型'CGBitmapInfo'的初始化程序

[英]Cannot invoke initializer for type 'CGBitmapInfo' with an argument list of type '(UInt32)'

我将图像作为纹理添加到金属球体中。 使用swift 2.0,但出现错误CGBitmapInfo(options),它说:无法为类型为'(UInt32)'的参数列表调用'CGBitmapInfo'类型的初始化程序...有人知道如何修复它吗? 这是我的代码:

func textureForImage(image:UIImage, device:MTLDevice) -> MTLTexture?
{
    let imageRef = image.CGImage

    let width = CGImageGetWidth(imageRef)
    let height = CGImageGetHeight(imageRef)
    let colorSpace = CGColorSpaceCreateDeviceRGB()

    let rawData = calloc(height * width * 4, sizeof(UInt8))

    let bytesPerPixel = 4
    let bytesPerRow = bytesPerPixel * width
    let bitsPerComponent = 8

    let options = CGImageAlphaInfo.PremultipliedLast.rawValue | CGBitmapInfo.ByteOrder32Big.rawValue

    let context = CGBitmapContextCreate(rawData,
                                        width,
                                        height,
                                        bitsPerComponent,
                                        bytesPerRow,
                                        colorSpace,
                                        CGBitmapInfo(options))


    CGContextDrawImage(context, CGRectMake(0, 0, CGFloat(width), CGFloat(height)), imageRef)

    let textureDescriptor = MTLTextureDescriptor.texture2DDescriptorWithPixelFormat(.RGBA8Unorm,
                                                                                    width: Int(width),
                                                                                    height: Int(height),
                                                                                    mipmapped: true)
    let texture = device.newTextureWithDescriptor(textureDescriptor)

    let region = MTLRegionMake2D(0, 0, Int(width), Int(height))

    texture.replaceRegion(region,
                          mipmapLevel: 0,
                          slice: 0,
                          withBytes: rawData,
                          bytesPerRow: bytesPerRow,
                          bytesPerImage: bytesPerRow * height)

    free(rawData)

    return texture
}

在当前版本的Swift中, CGBitmapContextCreate的最终参数是UInt32 ,因此,代替上面的CGBitmapInfo(options) ,您应该仅传递options (分配给options的表达式推断为UInt32类型)。

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