无法使用“(UInt32)”类型的参数列表调用类型 'CGBitmapInfo' 的初始值设定项
Cannot invoke initializer for type 'CGBitmapInfo' with an argument list of type '(UInt32)'
我正在将图像作为纹理添加到金属球体中。使用 swift 2.0,但我收到错误 CGBitmapInfo(options),它说:无法使用类型为“(UInt32)”的参数列表调用类型 'CGBitmapInfo' 的初始值设定项...任何人都知道如何修复它?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Swift的当前版本中,CGBitmapContextCreate
的最后一个参数是UInt32
,所以代替上面的CGBitmapInfo(options)
,你应该只传递options
(分配给 options
的表达式被推断为类型 UInt32
)。
我正在将图像作为纹理添加到金属球体中。使用 swift 2.0,但我收到错误 CGBitmapInfo(options),它说:无法使用类型为“(UInt32)”的参数列表调用类型 'CGBitmapInfo' 的初始值设定项...任何人都知道如何修复它?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Swift的当前版本中,CGBitmapContextCreate
的最后一个参数是UInt32
,所以代替上面的CGBitmapInfo(options)
,你应该只传递options
(分配给 options
的表达式被推断为类型 UInt32
)。