Merge pull request #8 from alexanderuv/master

Fixed problem with UInt32 initializer

Author: colemancda

Sources/SDL/PixelFormat.swift

@@ -73,18 +73,18 @@ internal extension SDLPixelFormat.Format {
 public extension SDLPixelFormat.Format {
 
     /// SDL_PIXELFORMAT_INDEX1LSB
-    static let index1LSB = SDLPixelFormat.Format(rawValue: UInt32(SDL_PIXELFORMAT_INDEX1LSB))
+    static let index1LSB = SDLPixelFormat.Format(rawValue: UInt32(SDL_PIXELFORMAT_INDEX1LSB.rawValue))
 
     /// SDL_PIXELFORMAT_INDEX1MSB
-    static let index1MSB = SDLPixelFormat.Format(rawValue: UInt32(SDL_PIXELFORMAT_INDEX1MSB))
+    static let index1MSB = SDLPixelFormat.Format(rawValue: UInt32(SDL_PIXELFORMAT_INDEX1MSB.rawValue))
 
     #if os(macOS)
     /// SDL_PIXELFORMAT_ARGB32
-    static let argb32 = SDLPixelFormat.Format(rawValue: UInt32(SDL_PIXELFORMAT_ARGB32))
+    static let argb32 = SDLPixelFormat.Format(rawValue: UInt32(SDL_PIXELFORMAT_ARGB32.rawValue))
     #endif
 
     /// SDL_PIXELFORMAT_ARGB8888
-    static let argb8888 = SDLPixelFormat.Format(rawValue: UInt32(SDL_PIXELFORMAT_ARGB8888))
+    static let argb8888 = SDLPixelFormat.Format(rawValue: UInt32(SDL_PIXELFORMAT_ARGB8888.rawValue))
 }
 
 // MARK: - ExpressibleByIntegerLiteral