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The SDK directory is now confusing as the Windows target also has a SDK overlay. In order to make this more uniform, move the SDK directory to Darwin which covers the fact that this covers the XNU family of OSes. The Windows directory contains the SDK overlay for the Windows target.
65 lines
2.0 KiB
Swift
65 lines
2.0 KiB
Swift
//===----------------------------------------------------------*- swift -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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// GLKit overlays for Swift
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//===----------------------------------------------------------------------===//
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@_exported import GLKit // Clang module
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// The GLKit headers provide a fairly complete set of types and operations
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// that Swift's importer is now able to present in Swift. However, Swift
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// still doesn't know yet how to natively expose the elements of these types.
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// This overlay generates Swift accessors for the GLKit matrix and vector
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// types.
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// Do dirty pointer manipulations to index an opaque struct like an array.
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@inlinable // FIXME(inline-always)
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@inline(__always)
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public func _indexHomogeneousValue<TTT, T>(_ aggregate: UnsafePointer<TTT>,
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_ index: Int) -> T {
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return UnsafeRawPointer(aggregate).load(
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fromByteOffset: index * MemoryLayout<T>.stride, as: T.self)
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}
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%{
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def defineSubscript(Type, limit):
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return """
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@inlinable // FIXME(inline-always)
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public subscript(i: Int) -> Float {{
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@inline(__always)
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get {{
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precondition(i >= 0, "Negative {0} index out of range")
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precondition(i < {1}, "{0} index out of range")
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// We can't derive an UnsafePointer from a let binding. Lame.
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var clone = self
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return _indexHomogeneousValue(&clone, i)
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}}
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}}
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""".format(Type, limit)
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}%
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% for size in [2, 3, 4]:
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extension GLKMatrix${size} {
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${ defineSubscript("GLKMatrix" + str(size), size * size) }
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}
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extension GLKVector${size} {
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${ defineSubscript("GLKVector" + str(size), size) }
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}
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% end
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extension GLKQuaternion {
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${ defineSubscript("GLKQuaternion", 4) }
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}
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