92 lines
3.9 KiB
Swift
92 lines
3.9 KiB
Swift
//
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/**
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* Copyright (c) 2019 Razeware LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Notwithstanding the foregoing, you may not use, copy, modify, merge, publish,
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* distribute, sublicense, create a derivative work, and/or sell copies of the
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* Software in any work that is designed, intended, or marketed for pedagogical or
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* instructional purposes related to programming, coding, application development,
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* or information technology. Permission for such use, copying, modification,
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* merger, publication, distribution, sublicensing, creation of derivative works,
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* or sale is expressly withheld.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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import MetalKit
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protocol Texturable {}
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extension Texturable {
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static func loadTexture(imageName: String) throws -> MTLTexture? {
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let textureLoader = MTKTextureLoader(device: Renderer.device)
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let textureLoaderOptions: [MTKTextureLoader.Option: Any] =
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[.origin: MTKTextureLoader.Origin.bottomLeft,
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.SRGB: false,
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.generateMipmaps: NSNumber(booleanLiteral: true)]
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let fileExtension =
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URL(fileURLWithPath: imageName).pathExtension.isEmpty ?
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"png" : nil
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guard let url = Bundle.main.url(forResource: imageName,
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withExtension: fileExtension)
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else {
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let texture = try? textureLoader.newTexture(name: imageName,
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scaleFactor: 1.0,
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bundle: Bundle.main, options: nil)
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if texture == nil {
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print("WARNING: Texture not found: \(imageName)")
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}
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return texture
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}
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let texture = try textureLoader.newTexture(URL: url,
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options: textureLoaderOptions)
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print("loaded texture: \(url.lastPathComponent)")
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return texture
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}
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static func loadTexture(texture: MDLTexture) throws -> MTLTexture? {
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let textureLoader = MTKTextureLoader(device: Renderer.device)
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let textureLoaderOptions: [MTKTextureLoader.Option: Any] =
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[.origin: MTKTextureLoader.Origin.bottomLeft,
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.SRGB: false,
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.generateMipmaps: NSNumber(booleanLiteral: true)]
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let texture = try? textureLoader.newTexture(texture: texture,
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options: textureLoaderOptions)
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return texture
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}
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static func loadCubeTexture(imageName: String) throws -> MTLTexture {
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let textureLoader = MTKTextureLoader(device: Renderer.device)
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if let texture = MDLTexture(cubeWithImagesNamed: [imageName]) {
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let options: [MTKTextureLoader.Option: Any] =
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[.origin: MTKTextureLoader.Origin.topLeft,
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.SRGB: false,
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.generateMipmaps: NSNumber(booleanLiteral: false)]
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return try textureLoader.newTexture(texture: texture, options: options)
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}
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let texture = try textureLoader.newTexture(name: imageName, scaleFactor: 1.0,
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bundle: .main)
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return texture
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}
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}
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