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added chapter 17

This commit is contained in:
Marius Horga 2016-09-25 01:39:11 +03:00
parent f589c2601f
commit d870b9d6c9
3 changed files with 18 additions and 16 deletions
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5
ch09/chapter09.playground/Resources/Shaders.metal
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@ -20,6 +20,7 @@ vertex Vertex vertex_func(constant Vertex *vertices [[buffer(0)]], constant Unif
return out;
}
fragment float4 fragment_func(Vertex vert [[stage_in]]) {
return vert.color;
fragment half4 fragment_func(Vertex vert [[stage_in]]) {
return half4(vert.color);
// return half4(0.0, 1.0, 0.0, 1.0);
}

29
ch09/chapter09.playground/Sources/MetalView.swift
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@ -14,7 +14,7 @@ public class MetalView: NSObject, MTKViewDelegate {
override public init() {
super.init()
device = MTLCreateSystemDefaultDevice()
queue = device.newCommandQueue()
queue = device.makeCommandQueue()
createBuffers()
createPipeline()
}
@ -37,27 +37,27 @@ public class MetalView: NSObject, MTKViewDelegate {
4, 0, 3, 3, 7, 4, // left
7, 6, 5, 5, 4, 7] // back
vertexBuffer = device!.newBuffer(withBytes: vertexData, length: sizeof(Vertex.self) * vertexData.count, options: [])
indexBuffer = device!.newBuffer(withBytes: indexData, length: sizeof(UInt16.self) * indexData.count , options: [])
uniformBuffer = device!.newBuffer(withLength: sizeof(matrix_float4x4.self), options: [])
vertexBuffer = device!.makeBuffer(bytes: vertexData, length: MemoryLayout<Vertex>.size * vertexData.count, options: [])
indexBuffer = device!.makeBuffer(bytes: indexData, length: MemoryLayout<UInt16>.size * indexData.count , options: [])
uniformBuffer = device!.makeBuffer(length: MemoryLayout<matrix_float4x4>.size, options: [])
}
func createPipeline() {
let path = Bundle.main.pathForResource("Shaders", ofType: "metal")
let path = Bundle.main.path(forResource: "Shaders", ofType: "metal")
let input: String?
let library: MTLLibrary
let vert_func: MTLFunction
let frag_func: MTLFunction
do {
input = try String(contentsOfFile: path!, encoding: String.Encoding.utf8)
library = try device!.newLibrary(withSource: input!, options: nil)
vert_func = library.newFunction(withName: "vertex_func")!
frag_func = library.newFunction(withName: "fragment_func")!
library = try device!.makeLibrary(source: input!, options: nil)
vert_func = library.makeFunction(name: "vertex_func")!
frag_func = library.makeFunction(name: "fragment_func")!
let rpld = MTLRenderPipelineDescriptor()
rpld.vertexFunction = vert_func
rpld.fragmentFunction = frag_func
rpld.colorAttachments[0].pixelFormat = .bgra8Unorm
rps = try device!.newRenderPipelineState(with: rpld)
rps = try device!.makeRenderPipelineState(descriptor: rpld)
} catch let e {
Swift.print("\(e)")
}
@ -72,12 +72,12 @@ public class MetalView: NSObject, MTKViewDelegate {
let cameraPosition = vector_float3(0, 0, -3)
let viewMatrix = translationMatrix(position: cameraPosition)
// let aspect = Float(view.drawableSize.width / view.drawableSize.height)
let projMatrix = projectionMatrix(near: 0, far: 10, aspect: 1, fovy: 1)
// let projMatrix = projectionMatrix(0, far: 10, aspect: aspect, fovy: 1)
let projMatrix = projectionMatrix(near: 0, far: 10, aspect: 1, fovy: 1)
let modelViewProjectionMatrix = matrix_multiply(projMatrix, matrix_multiply(viewMatrix, modelMatrix))
let bufferPointer = uniformBuffer.contents()
var uniforms = Uniforms(modelViewProjectionMatrix: modelViewProjectionMatrix)
memcpy(bufferPointer, &uniforms, sizeof(Uniforms.self))
memcpy(bufferPointer, &uniforms, MemoryLayout<Uniforms>.size)
}
public func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) {}
@ -86,14 +86,15 @@ public class MetalView: NSObject, MTKViewDelegate {
update()
if let rpd = view.currentRenderPassDescriptor, let drawable = view.currentDrawable {
rpd.colorAttachments[0].clearColor = MTLClearColorMake(0.5, 0.5, 0.5, 1.0)
let commandBuffer = queue.commandBuffer()
let commandEncoder = commandBuffer.renderCommandEncoder(with: rpd)
let commandBuffer = queue.makeCommandBuffer()
let commandEncoder = commandBuffer.makeRenderCommandEncoder(descriptor: rpd)
commandEncoder.setRenderPipelineState(rps)
commandEncoder.setFrontFacing(.counterClockwise)
commandEncoder.setCullMode(.back)
commandEncoder.setVertexBuffer(vertexBuffer, offset: 0, at: 0)
commandEncoder.setVertexBuffer(uniformBuffer, offset: 0, at: 1)
commandEncoder.drawIndexedPrimitives(.triangle, indexCount: indexBuffer.length / sizeof(UInt16.self), indexType: MTLIndexType.uInt16, indexBuffer: indexBuffer, indexBufferOffset: 0)
// commandEncoder.setTriangleFillMode(.lines)
commandEncoder.drawIndexedPrimitives(type: .triangle, indexCount: indexBuffer.length / MemoryLayout<UInt16>.size, indexType: MTLIndexType.uint16, indexBuffer: indexBuffer, indexBufferOffset: 0)
commandEncoder.endEncoding()
commandBuffer.present(drawable)
commandBuffer.commit()

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ch09/chapter09.playground/playground.xcworkspace/xcuserdata/marius.xcuserdatad/UserInterfaceState.xcuserstate generated
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