mirror of
https://github.com/GayPizzaSpecifications/voxelotl-engine.git
synced 2025-08-03 13:11:33 +00:00
cube defender of the polyverse
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@ -4,13 +4,43 @@ import QuartzCore.CAMetalLayer
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import simd
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import ShaderTypes
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class Renderer {
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fileprivate static let vertices = [
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ShaderVertex(position: SIMD4<Float>(-0.5, -0.5, 0.0, 1.0), color: SIMD4<Float>(1.0, 0.0, 0.0, 1.0)),
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ShaderVertex(position: SIMD4<Float>( 0.0, 0.5, 0.0, 1.0), color: SIMD4<Float>(0.0, 1.0, 0.0, 1.0)),
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ShaderVertex(position: SIMD4<Float>( 0.5, -0.5, 0.0, 1.0), color: SIMD4<Float>(0.0, 0.0, 1.0, 1.0))
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]
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fileprivate let cubeVertices: [ShaderVertex] = [
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.init(position: .init(-1, -1, 1, 1), normal: .init( 0, 0, 1, 0), texCoord: .init(0, 0)),
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.init(position: .init( 1, -1, 1, 1), normal: .init( 0, 0, 1, 0), texCoord: .init(1, 0)),
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.init(position: .init(-1, 1, 1, 1), normal: .init( 0, 0, 1, 0), texCoord: .init(0, 1)),
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.init(position: .init( 1, 1, 1, 1), normal: .init( 0, 0, 1, 0), texCoord: .init(1, 1)),
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.init(position: .init( 1, -1, 1, 1), normal: .init( 1, 0, 0, 0), texCoord: .init(0, 0)),
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.init(position: .init( 1, -1, -1, 1), normal: .init( 1, 0, 0, 0), texCoord: .init(1, 0)),
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.init(position: .init( 1, 1, 1, 1), normal: .init( 1, 0, 0, 0), texCoord: .init(0, 1)),
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.init(position: .init( 1, 1, -1, 1), normal: .init( 1, 0, 0, 0), texCoord: .init(1, 1)),
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.init(position: .init( 1, -1, -1, 1), normal: .init( 0, 0, -1, 0), texCoord: .init(0, 0)),
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.init(position: .init(-1, -1, -1, 1), normal: .init( 0, 0, -1, 0), texCoord: .init(1, 0)),
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.init(position: .init( 1, 1, -1, 1), normal: .init( 0, 0, -1, 0), texCoord: .init(0, 1)),
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.init(position: .init(-1, 1, -1, 1), normal: .init( 0, 0, -1, 0), texCoord: .init(1, 1)),
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.init(position: .init(-1, -1, -1, 1), normal: .init(-1, 0, 0, 0), texCoord: .init(0, 0)),
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.init(position: .init(-1, -1, 1, 1), normal: .init(-1, 0, 0, 0), texCoord: .init(1, 0)),
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.init(position: .init(-1, 1, -1, 1), normal: .init(-1, 0, 0, 0), texCoord: .init(0, 1)),
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.init(position: .init(-1, 1, 1, 1), normal: .init(-1, 0, 0, 0), texCoord: .init(1, 1)),
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.init(position: .init(-1, -1, -1, 1), normal: .init( 0, -1, 0, 0), texCoord: .init(0, 0)),
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.init(position: .init( 1, -1, -1, 1), normal: .init( 0, -1, 0, 0), texCoord: .init(1, 0)),
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.init(position: .init(-1, -1, 1, 1), normal: .init( 0, -1, 0, 0), texCoord: .init(0, 1)),
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.init(position: .init( 1, -1, 1, 1), normal: .init( 0, -1, 0, 0), texCoord: .init(1, 1)),
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.init(position: .init(-1, 1, 1, 1), normal: .init( 0, 1, 0, 0), texCoord: .init(0, 0)),
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.init(position: .init( 1, 1, 1, 1), normal: .init( 0, 1, 0, 0), texCoord: .init(1, 0)),
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.init(position: .init(-1, 1, -1, 1), normal: .init( 0, 1, 0, 0), texCoord: .init(0, 1)),
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.init(position: .init( 1, 1, -1, 1), normal: .init( 0, 1, 0, 0), texCoord: .init(1, 1)),
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]
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fileprivate let cubeIndices: [UInt16] = [
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0, 1, 2, 2, 1, 3,
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4, 5, 6, 6, 5, 7,
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8, 9, 10, 10, 9, 11,
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12, 13, 14, 14, 13, 15,
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16, 17, 18, 18, 17, 19,
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20, 21, 22, 22, 21, 23
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]
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class Renderer {
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private var device: MTLDevice
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private var layer: CAMetalLayer
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private var viewport = MTLViewport()
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@ -19,7 +49,9 @@ class Renderer {
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private let passDescription = MTLRenderPassDescriptor()
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private var pso: MTLRenderPipelineState
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private var vtxBuffer: MTLBuffer! = nil
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private var vtxBuffer: MTLBuffer, idxBuffer: MTLBuffer
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private var defaultTexture: MTLTexture
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private var cubeTexture: MTLTexture? = nil
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fileprivate static func createMetalDevice() -> MTLDevice? {
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MTLCopyAllDevices().reduce(nil, { best, dev in
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@ -71,21 +103,85 @@ class Renderer {
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throw RendererError.initFailure("Failed to create pipeline state: \(error.localizedDescription)")
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}
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// Create vertex buffers
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// Create cube mesh buffers
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guard let vtxBuffer = device.makeBuffer(
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bytes: Self.vertices,
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length: Self.vertices.count * MemoryLayout<ShaderVertex>.stride,
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bytes: cubeVertices,
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length: cubeVertices.count * MemoryLayout<ShaderVertex>.stride,
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options: .storageModeManaged)
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else {
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throw RendererError.initFailure("Failed to create vertex buffer")
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}
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self.vtxBuffer = vtxBuffer
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guard let idxBuffer = device.makeBuffer(
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bytes: cubeIndices,
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length: cubeIndices.count * MemoryLayout<UInt16>.stride,
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options: .storageModeManaged)
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else {
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throw RendererError.initFailure("Failed to create index buffer")
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}
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self.idxBuffer = idxBuffer
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do {
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self.defaultTexture = try Self.loadTexture(device, image2D: Image2D(Data([
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0xFF, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0xFF,
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0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0xFF, 0xFF
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]), format: .abgr8888, width: 2, height: 2, stride: 2 * 4))
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} catch {
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throw RendererError.initFailure("Failed to create default texture")
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}
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do {
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self.cubeTexture = try Self.loadTexture(device, resourcePath: "test.png")
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} catch RendererError.loadFailure(let message) {
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print("Failed to load texture image: \(message)")
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} catch {
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print("Failed to load texture image: unknown error")
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}
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}
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deinit {
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}
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static func loadTexture(_ device: MTLDevice, resourcePath path: String) throws -> MTLTexture {
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do {
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return try loadTexture(device, url: Bundle.main.getResource(path))
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} catch ContentError.resourceNotFound(let message) {
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throw RendererError.loadFailure(message)
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}
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}
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static func loadTexture(_ device: MTLDevice, url imageUrl: URL) throws -> MTLTexture {
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do {
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return try loadTexture(device, image2D: try NSImageLoader.open(url: imageUrl))
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} catch ImageLoaderError.openFailed(let message) {
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throw RendererError.loadFailure(message)
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}
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}
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static func loadTexture(_ device: MTLDevice, image2D image: Image2D) throws -> MTLTexture {
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let texDesc = MTLTextureDescriptor()
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texDesc.width = image.width
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texDesc.height = image.height
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texDesc.pixelFormat = .rgba8Unorm_srgb
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texDesc.textureType = .type2D
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texDesc.storageMode = .managed
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texDesc.usage = .shaderRead
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guard let newTexture = device.makeTexture(descriptor: texDesc) else {
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throw RendererError.loadFailure("Failed to create texture descriptor")
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}
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image.data.withUnsafeBytes { bytes in
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newTexture.replace(
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region: .init(
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origin: .init(x: 0, y: 0, z: 0),
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size: .init(width: image.width, height: image.height, depth: 1)),
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mipmapLevel: 0,
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withBytes: bytes.baseAddress!,
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bytesPerRow: image.stride)
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}
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return newTexture
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}
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func resize(size: SIMD2<Int>) {
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self.viewport = MTLViewport(
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originX: 0.0,
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@ -114,8 +210,16 @@ class Renderer {
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encoder.setCullMode(MTLCullMode.none)
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encoder.setRenderPipelineState(pso)
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encoder.setVertexBuffer(vtxBuffer, offset: 0, index: ShaderInputIdx.vertices.rawValue)
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encoder.drawPrimitives(type: .triangle, vertexStart: 0, vertexCount: 3)
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encoder.setFragmentTexture(cubeTexture ?? defaultTexture, index: 0)
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encoder.setVertexBuffer(vtxBuffer,
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offset: 0,
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index: ShaderInputIdx.vertices.rawValue)
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encoder.drawIndexedPrimitives(
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type: .triangle,
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indexCount: cubeIndices.count,
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indexType: .uint16,
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indexBuffer: idxBuffer,
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indexBufferOffset: 0)
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encoder.endEncoding()
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commandBuf.present(rt)
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@ -125,5 +229,6 @@ class Renderer {
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enum RendererError: Error {
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case initFailure(_ message: String)
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case loadFailure(_ message: String)
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case drawFailure(_ message: String)
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}
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