68 lines
2.5 KiB
Swift
68 lines
2.5 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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class Submesh {
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var mtkSubmesh: MTKSubmesh
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struct Textures {
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let baseColor: MTLTexture?
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let normal: MTLTexture?
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}
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let textures: Textures
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init(mdlSubmesh: MDLSubmesh, mtkSubmesh: MTKSubmesh) {
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self.mtkSubmesh = mtkSubmesh
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textures = Textures(material: mdlSubmesh.material)
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}
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}
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extension Submesh: Texturable {}
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private extension Submesh.Textures {
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init(material: MDLMaterial?) {
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func property(with semantic: MDLMaterialSemantic) -> MTLTexture? {
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guard let property = material?.property(with: semantic),
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property.type == .string,
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let filename = property.stringValue,
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let texture = try? Submesh.loadTexture(imageName: filename)
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else {
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return nil
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}
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return texture
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}
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baseColor = property(with: MDLMaterialSemantic.baseColor)
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normal = property(with: MDLMaterialSemantic.tangentSpaceNormal)
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}
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}
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