71 lines
3.0 KiB
Swift
Executable File
71 lines
3.0 KiB
Swift
Executable File
/**
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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 Model: Node {
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static var defaultVertexDescriptor: MDLVertexDescriptor = {
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let vertexDescriptor = MDLVertexDescriptor()
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vertexDescriptor.attributes[0] =
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MDLVertexAttribute(name: MDLVertexAttributePosition,
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format: .float3,
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offset: 0, bufferIndex: 0)
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vertexDescriptor.attributes[1] =
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MDLVertexAttribute(name: MDLVertexAttributeNormal,
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format: .float3,
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offset: 12, bufferIndex: 0)
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vertexDescriptor.layouts[0] = MDLVertexBufferLayout(stride: 24)
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return vertexDescriptor
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}()
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let vertexBuffer: MTLBuffer
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let mesh: MTKMesh
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let submeshes: [Submesh]
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init(name: String) {
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let assetURL = Bundle.main.url(forResource: name, withExtension: "obj")!
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let allocator = MTKMeshBufferAllocator(device: Renderer.device)
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let asset = MDLAsset(url: assetURL, vertexDescriptor: Model.defaultVertexDescriptor,
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bufferAllocator: allocator)
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let mdlMesh = asset.object(at: 0) as! MDLMesh
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let mesh = try! MTKMesh(mesh: mdlMesh, device: Renderer.device)
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self.mesh = mesh
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vertexBuffer = mesh.vertexBuffers[0].buffer
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submeshes = mdlMesh.submeshes?.enumerated().compactMap {index, submesh in
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(submesh as? MDLSubmesh).map {
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Submesh(submesh: mesh.submeshes[index],
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mdlSubmesh: $0)
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}
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} ?? []
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super.init()
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}
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}
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