/
Renderer.swift
1132 lines (940 loc) · 63.1 KB
/
Renderer.swift
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//
// Renderer.swift
//
import CompositorServices
import Metal
import MetalKit
import simd
import Spatial
import ARKit
import VideoToolbox
import ObjectiveC
// The 256 byte aligned size of our uniform structure
let alignedUniformsSize = (MemoryLayout<UniformsArray>.size + 0xFF) & -0x100
let alignedPlaneUniformSize = (MemoryLayout<PlaneUniform>.size + 0xFF) & -0x100
let alignedEncodingUniformSize = (MemoryLayout<EncodingUniform>.size + 0xFF) & -0x100
let maxBuffersInFlight = 6
let maxPlanesDrawn = 512
enum RendererError: Error {
case badVertexDescriptor
}
// Focal depth of the timewarp panel, ideally would be adjusted based on the depth
// of what the user is looking at.
let panel_depth: Float = 1
// TODO(zhuowei): what's the z supposed to be?
// x, y, z
// u, v
let fullscreenQuadVertices:[Float] = [-panel_depth, -panel_depth, -panel_depth,
panel_depth, -panel_depth, -panel_depth,
-panel_depth, panel_depth, -panel_depth,
panel_depth, panel_depth, -panel_depth,
0, 1,
0.5, 1,
0, 0,
0.5, 0]
func NonlinearToLinearRGB(_ color: simd_float3) -> simd_float3 {
let DIV12: Float = 1.0 / 12.92;
let DIV1: Float = 1.0 / 1.055;
let THRESHOLD: Float = 0.04045;
let GAMMA = simd_float3(repeating: 2.4);
let condition = simd_float3(color.x < THRESHOLD ? 1.0 : 0.0, color.y < THRESHOLD ? 1.0 : 0.0, color.z < THRESHOLD ? 1.0 : 0.0);
let lowValues = color * DIV12;
let highValues = pow((color + 0.055) * DIV1, GAMMA);
return condition * lowValues + (1.0 - condition) * highValues;
}
class Renderer {
public let device: MTLDevice
let commandQueue: MTLCommandQueue
var pipelineState: MTLRenderPipelineState
var depthStateAlways: MTLDepthStencilState
var depthStateGreater: MTLDepthStencilState
var dynamicUniformBuffer: MTLBuffer
var uniformBufferOffset = 0
var uniformBufferIndex = 0
var uniforms: UnsafeMutablePointer<UniformsArray>
var dynamicPlaneUniformBuffer: MTLBuffer
var planeUniformBufferOffset = 0
var planeUniformBufferIndex = 0
var planeUniforms: UnsafeMutablePointer<PlaneUniform>
var dynamicEncodingUniformBuffer: MTLBuffer
var encodingUniformBufferOffset = 0
var encodingUniformBufferIndex = 0
var encodingUniforms: UnsafeMutablePointer<EncodingUniform>
let layerRenderer: LayerRenderer?
var metalTextureCache: CVMetalTextureCache!
let mtlVertexDescriptor: MTLVertexDescriptor
var videoFramePipelineState_YpCbCrBiPlanar: MTLRenderPipelineState!
var videoFrameDepthPipelineState: MTLRenderPipelineState!
var fullscreenQuadBuffer:MTLBuffer!
var encodingGamma: Float = 1.0
var lastReconfigureTime: Double = 0.0
var drawPlanesWithInformedColors: Bool = false
var fadeInOverlayAlpha: Float = 0.0
var coolPulsingColorsTime: Float = 0.0
var reprojectedFramesInARow: Int = 0
var currentYuvTransform: simd_float4x4 = matrix_identity_float4x4
// Was curious if it improved; it's still juddery.
var useApplesReprojection = false
// More readable helper var than layerRenderer == nil
var isRealityKit = false
var isUsingMetalFX = false
var hdrEnabled = false
var currentRenderColorFormat = renderColorFormatSDR
var currentDrawableRenderColorFormat = renderColorFormatDrawableSDR
//
// Chroma keying shader vars
//
var chromaKeyEnabled = false
var chromaKeyColor = simd_float3(0.0, 1.0, 0.0); // green
//chromaKeyLerpDistRange is used to decide the amount of color to be used from either foreground or background
//if the current distance from pixel color to chromaKey is smaller then chromaKeyLerpDistRange.x we use background,
//if the current distance from pixel color to chromaKey is bigger then chromaKeyLerpDistRange.y we use foreground,
//else, we alpha blend them
//playing with this variable will decide how much the foreground and background blend together
var chromaKeyLerpDistRange = simd_float2(0.005, 0.1);
init(_ layerRenderer: LayerRenderer?) {
self.layerRenderer = layerRenderer
if layerRenderer == nil {
isRealityKit = true
}
guard let settings = Settings.getAlvrSettings() else {
fatalError("streaming started: failed to retrieve alvr settings")
}
encodingGamma = settings.video.encoderConfig.encodingGamma
hdrEnabled = settings.video.encoderConfig.enableHdr
if hdrEnabled {
currentRenderColorFormat = renderColorFormatHDR
currentDrawableRenderColorFormat = renderColorFormatDrawableHDR
}
else {
currentRenderColorFormat = renderColorFormatSDR
currentDrawableRenderColorFormat = renderColorFormatSDR
}
self.device = layerRenderer?.device ?? MTLCreateSystemDefaultDevice()!
self.commandQueue = self.device.makeCommandQueue()!
let uniformBufferSize = alignedUniformsSize * maxBuffersInFlight
self.dynamicUniformBuffer = self.device.makeBuffer(length:uniformBufferSize,
options:[MTLResourceOptions.storageModeShared])!
self.dynamicUniformBuffer.label = "UniformBuffer"
uniforms = UnsafeMutableRawPointer(dynamicUniformBuffer.contents()).bindMemory(to:UniformsArray.self, capacity:1)
let planeUniformBufferSize = alignedPlaneUniformSize * maxPlanesDrawn
self.dynamicPlaneUniformBuffer = self.device.makeBuffer(length:planeUniformBufferSize,
options:[MTLResourceOptions.storageModeShared])!
self.dynamicPlaneUniformBuffer.label = "PlaneUniformBuffer"
planeUniforms = UnsafeMutableRawPointer(dynamicPlaneUniformBuffer.contents()).bindMemory(to:PlaneUniform.self, capacity:1)
let encodingUniformBufferSize = alignedEncodingUniformSize * maxBuffersInFlight
self.dynamicEncodingUniformBuffer = self.device.makeBuffer(length:encodingUniformBufferSize,
options:[MTLResourceOptions.storageModeShared])!
self.dynamicEncodingUniformBuffer.label = "EncodingUniformBuffer"
encodingUniforms = UnsafeMutableRawPointer(dynamicEncodingUniformBuffer.contents()).bindMemory(to:EncodingUniform.self, capacity:1)
mtlVertexDescriptor = Renderer.buildMetalVertexDescriptor()
do {
pipelineState = try Renderer.buildRenderPipelineWithDevice(device: device,
mtlVertexDescriptor: mtlVertexDescriptor,
colorFormat: layerRenderer?.configuration.colorFormat ?? currentRenderColorFormat,
depthFormat: layerRenderer?.configuration.depthFormat ?? renderDepthFormat,
viewCount: layerRenderer?.properties.viewCount ?? renderViewCount,
vertexShaderName: "vertexShader",
fragmentShaderName: "fragmentShader")
} catch {
fatalError("Unable to compile render pipeline state. Error info: \(error)")
}
let depthStateDescriptorAlways = MTLDepthStencilDescriptor()
depthStateDescriptorAlways.depthCompareFunction = MTLCompareFunction.always
depthStateDescriptorAlways.isDepthWriteEnabled = true
self.depthStateAlways = device.makeDepthStencilState(descriptor:depthStateDescriptorAlways)!
let depthStateDescriptorGreater = MTLDepthStencilDescriptor()
depthStateDescriptorGreater.depthCompareFunction = MTLCompareFunction.greater
depthStateDescriptorGreater.isDepthWriteEnabled = true
self.depthStateGreater = device.makeDepthStencilState(descriptor:depthStateDescriptorGreater)!
if CVMetalTextureCacheCreate(nil, nil, self.device, nil, &metalTextureCache) != 0 {
fatalError("CVMetalTextureCacheCreate")
}
fullscreenQuadVertices.withUnsafeBytes {
fullscreenQuadBuffer = device.makeBuffer(bytes: $0.baseAddress!, length: $0.count)
}
self.videoFrameDepthPipelineState = try! Renderer.buildRenderPipelineForVideoFrameDepthWithDevice(
device: self.device,
mtlVertexDescriptor: self.mtlVertexDescriptor,
colorFormat: layerRenderer?.configuration.colorFormat ?? currentRenderColorFormat,
depthFormat: layerRenderer?.configuration.depthFormat ?? renderDepthFormat,
viewCount: layerRenderer?.properties.viewCount ?? renderViewCount
)
rebuildRenderPipelines()
EventHandler.shared.handleRenderStarted()
EventHandler.shared.renderStarted = true
}
func rebuildRenderPipelines() {
guard let settings = Settings.getAlvrSettings() else {
fatalError("streaming started: failed to retrieve alvr settings")
}
print("rebuildRenderPipelines")
encodingGamma = settings.video.encoderConfig.encodingGamma
hdrEnabled = settings.video.encoderConfig.enableHdr
if hdrEnabled {
currentRenderColorFormat = renderColorFormatHDR
currentDrawableRenderColorFormat = renderColorFormatDrawableHDR
}
else {
currentRenderColorFormat = renderColorFormatSDR
currentDrawableRenderColorFormat = renderColorFormatSDR
}
let foveationVars = FFR.calculateFoveationVars(alvrEvent: EventHandler.shared.streamEvent!.STREAMING_STARTED, foveationSettings: settings.video.foveatedEncoding)
videoFramePipelineState_YpCbCrBiPlanar = try! buildRenderPipelineForVideoFrameWithDevice(
device: device,
mtlVertexDescriptor: mtlVertexDescriptor,
colorFormat: layerRenderer?.configuration.colorFormat ?? currentRenderColorFormat,
viewCount: layerRenderer?.properties.viewCount ?? renderViewCount,
foveationVars: foveationVars,
variantName: "YpCbCrBiPlanar"
)
do {
pipelineState = try Renderer.buildRenderPipelineWithDevice(device: device,
mtlVertexDescriptor: mtlVertexDescriptor,
colorFormat: layerRenderer?.configuration.colorFormat ?? currentRenderColorFormat,
depthFormat: layerRenderer?.configuration.depthFormat ?? renderDepthFormat,
viewCount: layerRenderer?.properties.viewCount ?? renderViewCount,
vertexShaderName: "vertexShader",
fragmentShaderName: "fragmentShader")
} catch {
fatalError("Unable to compile render pipeline state. Error info: \(error)")
}
self.videoFrameDepthPipelineState = try! Renderer.buildRenderPipelineForVideoFrameDepthWithDevice(
device: self.device,
mtlVertexDescriptor: self.mtlVertexDescriptor,
colorFormat: layerRenderer?.configuration.colorFormat ?? currentRenderColorFormat,
depthFormat: layerRenderer?.configuration.depthFormat ?? renderDepthFormat,
viewCount: layerRenderer?.properties.viewCount ?? renderViewCount
)
}
class func buildMetalVertexDescriptor() -> MTLVertexDescriptor {
// Create a Metal vertex descriptor specifying how vertices will by laid out for input into our render
// pipeline and how we'll layout our Model IO vertices
let mtlVertexDescriptor = MTLVertexDescriptor()
mtlVertexDescriptor.attributes[VertexAttribute.position.rawValue].format = MTLVertexFormat.float3
mtlVertexDescriptor.attributes[VertexAttribute.position.rawValue].offset = 0
mtlVertexDescriptor.attributes[VertexAttribute.position.rawValue].bufferIndex = BufferIndex.meshPositions.rawValue
mtlVertexDescriptor.attributes[VertexAttribute.texcoord.rawValue].format = MTLVertexFormat.float2
mtlVertexDescriptor.attributes[VertexAttribute.texcoord.rawValue].offset = 0
mtlVertexDescriptor.attributes[VertexAttribute.texcoord.rawValue].bufferIndex = BufferIndex.meshGenerics.rawValue
mtlVertexDescriptor.layouts[BufferIndex.meshPositions.rawValue].stride = 12
mtlVertexDescriptor.layouts[BufferIndex.meshPositions.rawValue].stepRate = 1
mtlVertexDescriptor.layouts[BufferIndex.meshPositions.rawValue].stepFunction = MTLVertexStepFunction.perVertex
mtlVertexDescriptor.layouts[BufferIndex.meshGenerics.rawValue].stride = 8
mtlVertexDescriptor.layouts[BufferIndex.meshGenerics.rawValue].stepRate = 1
mtlVertexDescriptor.layouts[BufferIndex.meshGenerics.rawValue].stepFunction = MTLVertexStepFunction.perVertex
return mtlVertexDescriptor
}
class func buildRenderPipelineWithDevice(device: MTLDevice,
mtlVertexDescriptor: MTLVertexDescriptor,
colorFormat: MTLPixelFormat,
depthFormat: MTLPixelFormat,
viewCount: Int,
vertexShaderName: String,
fragmentShaderName: String) throws -> MTLRenderPipelineState {
/// Build a render state pipeline object
let library = device.makeDefaultLibrary()
let vertexFunction = library?.makeFunction(name: vertexShaderName)
let fragmentFunction = library?.makeFunction(name: fragmentShaderName)
let pipelineDescriptor = MTLRenderPipelineDescriptor()
pipelineDescriptor.label = "RenderPipeline"
pipelineDescriptor.vertexFunction = vertexFunction
pipelineDescriptor.fragmentFunction = fragmentFunction
pipelineDescriptor.vertexDescriptor = mtlVertexDescriptor
pipelineDescriptor.colorAttachments[0].pixelFormat = colorFormat
pipelineDescriptor.colorAttachments[0].isBlendingEnabled = true
pipelineDescriptor.colorAttachments[0].rgbBlendOperation = .add
pipelineDescriptor.colorAttachments[0].alphaBlendOperation = .add
pipelineDescriptor.colorAttachments[0].sourceRGBBlendFactor = .sourceAlpha
pipelineDescriptor.colorAttachments[0].sourceAlphaBlendFactor = .sourceAlpha
pipelineDescriptor.colorAttachments[0].destinationRGBBlendFactor = .oneMinusSourceAlpha
pipelineDescriptor.colorAttachments[0].destinationAlphaBlendFactor = .oneMinusSourceAlpha
pipelineDescriptor.depthAttachmentPixelFormat = depthFormat
pipelineDescriptor.maxVertexAmplificationCount = viewCount
return try device.makeRenderPipelineState(descriptor: pipelineDescriptor)
}
func buildCopyPipelineWithDevice(device: MTLDevice,
colorFormat: MTLPixelFormat,
vertexShaderName: String,
fragmentShaderName: String) throws -> MTLRenderPipelineState {
/// Build a render state pipeline object
let library = device.makeDefaultLibrary()
let fragmentConstants = MTLFunctionConstantValues()
if let settings = WorldTracker.shared.settings {
chromaKeyEnabled = settings.chromaKeyEnabled && isRealityKit
chromaKeyColor = simd_float3(settings.chromaKeyColorR, settings.chromaKeyColorG, settings.chromaKeyColorB)
chromaKeyLerpDistRange = simd_float2(settings.chromaKeyDistRangeMin, settings.chromaKeyDistRangeMax)
}
var chromaKeyColorLinear = NonlinearToLinearRGB(chromaKeyColor)
fragmentConstants.setConstantValue(&chromaKeyEnabled, type: .bool, index: ALVRFunctionConstant.chromaKeyEnabled.rawValue)
fragmentConstants.setConstantValue(&chromaKeyColorLinear, type: .float3, index: ALVRFunctionConstant.chromaKeyColor.rawValue)
fragmentConstants.setConstantValue(&chromaKeyLerpDistRange, type: .float2, index: ALVRFunctionConstant.chromaKeyLerpDistRange.rawValue)
fragmentConstants.setConstantValue(&isRealityKit, type: .bool, index: ALVRFunctionConstant.realityKitEnabled.rawValue)
fragmentConstants.setConstantValue(&isUsingMetalFX, type: .bool, index: ALVRFunctionConstant.metalFXEnabled.rawValue)
let vertexFunction = library?.makeFunction(name: vertexShaderName)
let fragmentFunction = try! library?.makeFunction(name: fragmentShaderName, constantValues: fragmentConstants)
let pipelineDescriptor = MTLRenderPipelineDescriptor()
pipelineDescriptor.label = "RenderPipeline"
pipelineDescriptor.vertexFunction = vertexFunction
pipelineDescriptor.fragmentFunction = fragmentFunction
pipelineDescriptor.colorAttachments[0].pixelFormat = colorFormat
pipelineDescriptor.colorAttachments[0].isBlendingEnabled = false
pipelineDescriptor.maxVertexAmplificationCount = 1
return try device.makeRenderPipelineState(descriptor: pipelineDescriptor)
}
// Depth-only renderer, for correcting after overlay render just so Apple's compositor isn't annoying about it
class func buildRenderPipelineForVideoFrameDepthWithDevice(device: MTLDevice,
mtlVertexDescriptor: MTLVertexDescriptor,
colorFormat: MTLPixelFormat,
depthFormat: MTLPixelFormat,
viewCount: Int) throws -> MTLRenderPipelineState {
/// Build a render state pipeline object
let library = device.makeDefaultLibrary()
let vertexFunction = library?.makeFunction(name: "videoFrameVertexShader")
let fragmentFunction = library?.makeFunction(name: "videoFrameDepthFragmentShader")
let pipelineDescriptor = MTLRenderPipelineDescriptor()
pipelineDescriptor.label = "VideoFrameDepthRenderPipeline"
pipelineDescriptor.vertexFunction = vertexFunction
pipelineDescriptor.fragmentFunction = fragmentFunction
//pipelineDescriptor.vertexDescriptor = mtlVertexDescriptor
pipelineDescriptor.colorAttachments[0].pixelFormat = colorFormat
pipelineDescriptor.depthAttachmentPixelFormat = depthFormat
pipelineDescriptor.maxVertexAmplificationCount = viewCount
return try device.makeRenderPipelineState(descriptor: pipelineDescriptor)
}
func buildRenderPipelineForVideoFrameWithDevice(device: MTLDevice,
mtlVertexDescriptor: MTLVertexDescriptor,
colorFormat: MTLPixelFormat,
viewCount: Int,
foveationVars: FoveationVars,
variantName: String) throws -> MTLRenderPipelineState {
let library = device.makeDefaultLibrary()
let vertexFunction = library?.makeFunction(name: "videoFrameVertexShader")
let fragmentConstants = FFR.makeFunctionConstants(foveationVars)
if let settings = WorldTracker.shared.settings {
chromaKeyEnabled = settings.chromaKeyEnabled && isRealityKit
chromaKeyColor = simd_float3(settings.chromaKeyColorR, settings.chromaKeyColorG, settings.chromaKeyColorB)
chromaKeyLerpDistRange = simd_float2(settings.chromaKeyDistRangeMin, settings.chromaKeyDistRangeMax)
}
var chromaKeyColorLinear = NonlinearToLinearRGB(chromaKeyColor)
fragmentConstants.setConstantValue(&chromaKeyEnabled, type: .bool, index: ALVRFunctionConstant.chromaKeyEnabled.rawValue)
fragmentConstants.setConstantValue(&chromaKeyColorLinear, type: .float3, index: ALVRFunctionConstant.chromaKeyColor.rawValue)
fragmentConstants.setConstantValue(&chromaKeyLerpDistRange, type: .float2, index: ALVRFunctionConstant.chromaKeyLerpDistRange.rawValue)
fragmentConstants.setConstantValue(&isRealityKit, type: .bool, index: ALVRFunctionConstant.realityKitEnabled.rawValue)
fragmentConstants.setConstantValue(&isUsingMetalFX, type: .bool, index: ALVRFunctionConstant.metalFXEnabled.rawValue)
let fragmentFunction = try library?.makeFunction(name: "videoFrameFragmentShader_" + variantName, constantValues: fragmentConstants)
let pipelineDescriptor = MTLRenderPipelineDescriptor()
pipelineDescriptor.label = "VideoFrameRenderPipeline_" + variantName
pipelineDescriptor.vertexFunction = vertexFunction
pipelineDescriptor.fragmentFunction = fragmentFunction
//pipelineDescriptor.vertexDescriptor = mtlVertexDescriptor
pipelineDescriptor.colorAttachments[0].pixelFormat = colorFormat
pipelineDescriptor.maxVertexAmplificationCount = viewCount
return try device.makeRenderPipelineState(descriptor: pipelineDescriptor)
}
private func updateDynamicBufferState() {
/// Update the state of our uniform buffers before rendering
uniformBufferIndex = (uniformBufferIndex + 1) % maxBuffersInFlight
uniformBufferOffset = alignedUniformsSize * uniformBufferIndex
uniforms = UnsafeMutableRawPointer(dynamicUniformBuffer.contents() + uniformBufferOffset).bindMemory(to:UniformsArray.self, capacity:1)
encodingUniformBufferIndex = (encodingUniformBufferIndex + 1) % maxBuffersInFlight
encodingUniformBufferOffset = alignedEncodingUniformSize * encodingUniformBufferIndex
encodingUniforms = UnsafeMutableRawPointer(dynamicEncodingUniformBuffer.contents() + encodingUniformBufferOffset).bindMemory(to:EncodingUniform.self, capacity:1)
}
private func selectNextPlaneUniformBuffer() {
/// Update the state of our uniform buffers before rendering
planeUniformBufferIndex = (planeUniformBufferIndex + 1) % maxPlanesDrawn
planeUniformBufferOffset = alignedPlaneUniformSize * planeUniformBufferIndex
planeUniforms = UnsafeMutableRawPointer(dynamicPlaneUniformBuffer.contents() + planeUniformBufferOffset).bindMemory(to:PlaneUniform.self, capacity:1)
}
private func updateGameStateForVideoFrame(_ whichIdx: Int, viewTransforms: [simd_float4x4], viewTangents: [simd_float4], nearZ: Double, farZ: Double, framePose: simd_float4x4, simdDeviceAnchor: simd_float4x4) {
func uniforms(forViewIndex viewIndex: Int) -> Uniforms {
let tangents = viewTangents[viewIndex]
var framePoseNoTranslation = framePose
var simdDeviceAnchorNoTranslation = simdDeviceAnchor
framePoseNoTranslation.columns.3 = simd_float4(0.0, 0.0, 0.0, 1.0)
simdDeviceAnchorNoTranslation.columns.3 = simd_float4(0.0, 0.0, 0.0, 1.0)
let viewMatrix = (simdDeviceAnchor * viewTransforms[viewIndex]).inverse
let viewMatrixFrame = (framePoseNoTranslation.inverse * simdDeviceAnchorNoTranslation).inverse
let projection = isRealityKit ? ProjectiveTransform3D(leftTangent: (Double(tangents[0]) + Double(tangents[1])) * 0.5,
rightTangent: (Double(tangents[0]) + Double(tangents[1])) * 0.5,
topTangent: (Double(tangents[2]) + Double(tangents[3])) * 0.5,
bottomTangent: (Double(tangents[2]) + Double(tangents[3])) * 0.5,
nearZ: renderZNear,
farZ: renderZFar,
reverseZ: true)
: ProjectiveTransform3D(leftTangent: Double(tangents[0]),
rightTangent: Double(tangents[1]),
topTangent: Double(tangents[2]),
bottomTangent: Double(tangents[3]),
nearZ: nearZ,
farZ: farZ,
reverseZ: true)
return Uniforms(projectionMatrix: .init(projection), modelViewMatrixFrame: viewMatrixFrame, modelViewMatrix: viewMatrix, tangents: tangents)
}
self.uniforms[0].uniforms.0 = uniforms(forViewIndex: 0)
if viewTransforms.count > 1 {
self.uniforms[0].uniforms.1 = uniforms(forViewIndex: 1)
}
}
// Checks if eye tracking was secretly added, maybe, hard to know really.
func checkEyes(drawable: LayerRenderer.Drawable) {
print(drawable.views[0].transform - EventHandler.shared.viewTransforms[0])
print(drawable.views[1].transform - EventHandler.shared.viewTransforms[1])
if let vrr = drawable.rasterizationRateMaps.first {
let eyeCenterX = Float(vrr.screenSize.width) / 2.0
let eyeCenterY = Float(vrr.screenSize.height) / 2.0
let physSizeL = vrr.physicalSize(layer: 0)
let physCoordsL = vrr.physicalCoordinates(screenCoordinates: MTLCoordinate2D(x: eyeCenterX, y: eyeCenterY), layer: 0)
let physSizeR = vrr.physicalSize(layer: 1)
let physCoordsR = vrr.physicalCoordinates(screenCoordinates: MTLCoordinate2D(x: eyeCenterX, y: eyeCenterY), layer: 1)
print(Float(physCoordsL.x) / Float(physSizeL.width), Float(physCoordsL.y) / Float(physSizeL.height), ":::", Float(physCoordsR.x) / Float(physSizeR.width), Float(physCoordsR.y) / Float(physSizeR.height))
}
}
var roundTripRenderTime: Double = 0.0
var lastRoundTripRenderTimestamp: Double = 0.0
func renderFrame() {
/// Per frame updates hare
EventHandler.shared.framesRendered += 1
EventHandler.shared.totalFramesRendered += 1
var streamingActiveForFrame = EventHandler.shared.streamingActive
var isReprojected = false
var queuedFrame:QueuedFrame? = nil
guard let frame = layerRenderer!.queryNextFrame() else { return }
guard let timing = frame.predictTiming() else { return }
frame.startUpdate()
frame.endUpdate()
LayerRenderer.Clock().wait(until: timing.optimalInputTime)
frame.startSubmission()
roundTripRenderTime = CACurrentMediaTime() - lastRoundTripRenderTimestamp
lastRoundTripRenderTimestamp = CACurrentMediaTime()
let startPollTime = CACurrentMediaTime()
while true {
sched_yield()
// If visionOS skipped our last frame, let the queue fill up a bit
if EventHandler.shared.lastQueuedFrame != nil {
if EventHandler.shared.lastQueuedFrame!.timestamp != EventHandler.shared.lastSubmittedTimestamp && EventHandler.shared.frameQueue.count < 2 {
queuedFrame = EventHandler.shared.lastQueuedFrame
EventHandler.shared.framesRendered -= 1
isReprojected = false
break
}
}
objc_sync_enter(EventHandler.shared.frameQueueLock)
queuedFrame = EventHandler.shared.frameQueue.count > 0 ? EventHandler.shared.frameQueue.removeFirst() : nil
objc_sync_exit(EventHandler.shared.frameQueueLock)
if queuedFrame != nil {
break
}
if CACurrentMediaTime() - startPollTime > 0.005 {
//EventHandler.shared.framesRendered -= 1
break
}
}
// Recycle old frame with old timestamp/anchor (visionOS doesn't do timewarp for us?)
if queuedFrame == nil && EventHandler.shared.lastQueuedFrame != nil {
//print("Using last frame...")
queuedFrame = EventHandler.shared.lastQueuedFrame
EventHandler.shared.framesRendered -= 1
isReprojected = true
}
if queuedFrame == nil && streamingActiveForFrame {
streamingActiveForFrame = false
}
let renderingStreaming = streamingActiveForFrame && queuedFrame != nil
guard let commandBuffer = commandQueue.makeCommandBuffer() else {
fatalError("Failed to create command buffer")
}
guard let drawable = frame.queryDrawable() else {
if queuedFrame != nil {
EventHandler.shared.lastQueuedFrame = queuedFrame
}
return
}
if queuedFrame != nil && EventHandler.shared.lastSubmittedTimestamp != queuedFrame!.timestamp {
alvr_report_compositor_start(queuedFrame!.timestamp)
}
if EventHandler.shared.alvrInitialized && streamingActiveForFrame {
let ipd = drawable.views.count > 1 ? simd_length(drawable.views[0].transform.columns.3 - drawable.views[1].transform.columns.3) : 0.063
if abs(EventHandler.shared.lastIpd - ipd) > 0.001 {
print("Send view config")
if EventHandler.shared.lastIpd != -1 {
print("IPD changed!", EventHandler.shared.lastIpd, "->", ipd)
}
else {
EventHandler.shared.framesRendered = 0
lastReconfigureTime = CACurrentMediaTime()
let rebuildThread = Thread {
self.rebuildRenderPipelines()
}
rebuildThread.name = "Rebuild Render Pipelines Thread"
rebuildThread.start()
}
let leftAngles = atan(drawable.views[0].tangents)
let rightAngles = drawable.views.count > 1 ? atan(drawable.views[1].tangents) : leftAngles
let leftFov = AlvrFov(left: -leftAngles.x, right: leftAngles.y, up: leftAngles.z, down: -leftAngles.w)
let rightFov = AlvrFov(left: -rightAngles.x, right: rightAngles.y, up: rightAngles.z, down: -rightAngles.w)
EventHandler.shared.viewFovs = [leftFov, rightFov]
EventHandler.shared.viewTransforms = [drawable.views[0].transform, drawable.views.count > 1 ? drawable.views[1].transform : drawable.views[0].transform]
EventHandler.shared.lastIpd = ipd
}
if let settings = WorldTracker.shared.settings {
if CACurrentMediaTime() - lastReconfigureTime > 1.0 && (settings.chromaKeyEnabled != chromaKeyEnabled || settings.chromaKeyColorR != chromaKeyColor.x || settings.chromaKeyColorG != chromaKeyColor.y || settings.chromaKeyColorB != chromaKeyColor.z || settings.chromaKeyDistRangeMin != chromaKeyLerpDistRange.x || settings.chromaKeyDistRangeMax != chromaKeyLerpDistRange.y) {
lastReconfigureTime = CACurrentMediaTime()
let rebuildThread = Thread {
self.rebuildRenderPipelines()
}
rebuildThread.name = "Rebuild Render Pipelines Thread"
rebuildThread.start()
}
}
}
//checkEyes(drawable: drawable)
objc_sync_enter(EventHandler.shared.frameQueueLock)
EventHandler.shared.framesSinceLastDecode += 1
objc_sync_exit(EventHandler.shared.frameQueueLock)
let vsyncTime = LayerRenderer.Clock.Instant.epoch.duration(to: drawable.frameTiming.presentationTime).timeInterval
let vsyncTimeNs = UInt64(vsyncTime * Double(NSEC_PER_SEC))
let framePreviouslyPredictedPose = queuedFrame != nil ? WorldTracker.shared.convertSteamVRViewPose(queuedFrame!.viewParams) : nil
// Do NOT move this, just in case, because DeviceAnchor is wonkey and every DeviceAnchor mutates each other.
if EventHandler.shared.alvrInitialized {
// TODO: I suspect Apple changes view transforms every frame to account for pupil swim, figure out how to fit the latest view transforms in?
// Since pupil swim is purely an axial thing, maybe we can just timewarp the view transforms as well idk
let viewFovs = EventHandler.shared.viewFovs
let viewTransforms = EventHandler.shared.viewTransforms
let targetTimestamp = vsyncTime + (Double(min(alvr_get_head_prediction_offset_ns(), WorldTracker.maxPrediction)) / Double(NSEC_PER_SEC))
let reportedTargetTimestamp = vsyncTime
WorldTracker.shared.sendTracking(viewTransforms: viewTransforms, viewFovs: viewFovs, targetTimestamp: targetTimestamp, reportedTargetTimestamp: reportedTargetTimestamp, delay: 0.0)
}
let deviceAnchor = WorldTracker.shared.worldTracking.queryDeviceAnchor(atTimestamp: vsyncTime)
drawable.deviceAnchor = deviceAnchor
commandBuffer.addCompletedHandler { (_ commandBuffer)-> Swift.Void in
if EventHandler.shared.alvrInitialized && queuedFrame != nil && EventHandler.shared.lastSubmittedTimestamp != queuedFrame?.timestamp {
let currentTimeNs = UInt64(CACurrentMediaTime() * Double(NSEC_PER_SEC))
//print("Finished:", queuedFrame!.timestamp)
alvr_report_submit(queuedFrame!.timestamp, vsyncTimeNs &- currentTimeNs)
EventHandler.shared.lastSubmittedTimestamp = queuedFrame!.timestamp
}
}
// List of reasons to not display a frame
var frameIsSuitableForDisplaying = true
//print(EventHandler.shared.lastIpd, WorldTracker.shared.worldTrackingAddedOriginAnchor, EventHandler.shared.framesRendered)
if EventHandler.shared.lastIpd == -1 || EventHandler.shared.framesRendered < 90 {
// Don't show frame if we haven't sent the view config and received frames
// with that config applied.
frameIsSuitableForDisplaying = false
print("IPD is bad, no frame")
}
if !WorldTracker.shared.worldTrackingAddedOriginAnchor && EventHandler.shared.framesRendered < 300 {
// Don't show frame if we haven't figured out our origin yet.
frameIsSuitableForDisplaying = false
print("Origin is bad, no frame")
}
if EventHandler.shared.videoFormat == nil {
frameIsSuitableForDisplaying = false
print("Missing video format, no frame")
}
if let videoFormat = EventHandler.shared.videoFormat {
currentYuvTransform = VideoHandler.getYUVTransformForVideoFormat(videoFormat)
}
// TODO: check layerRenderer.configuration.layout == .layered ?
let viewports = drawable.views.map { $0.textureMap.viewport }
let rasterizationRateMap = drawable.rasterizationRateMaps.first
let viewTransforms = drawable.views.map { $0.transform }
let viewTangents = drawable.views.map { $0.tangents }
let nearZ = Double(drawable.depthRange.y)
let farZ = Double(drawable.depthRange.x)
let simdDeviceAnchor = deviceAnchor?.originFromAnchorTransform ?? matrix_identity_float4x4
let framePose = framePreviouslyPredictedPose ?? matrix_identity_float4x4
if renderingStreaming && frameIsSuitableForDisplaying && queuedFrame != nil {
//print("render")
if let encoder = beginRenderStreamingFrame(0, commandBuffer: commandBuffer, renderTargetColor: drawable.colorTextures[0], renderTargetDepth: drawable.depthTextures[0], viewports: viewports, viewTransforms: viewTransforms, viewTangents: viewTangents, nearZ: nearZ, farZ: farZ, rasterizationRateMap: rasterizationRateMap, queuedFrame: queuedFrame, framePose: framePose, simdDeviceAnchor: simdDeviceAnchor) {
renderStreamingFrame(0, commandBuffer: commandBuffer, renderEncoder: encoder, renderTargetColor: drawable.colorTextures[0], renderTargetDepth: drawable.depthTextures[0], viewports: viewports, viewTransforms: viewTransforms, viewTangents: viewTangents, nearZ: nearZ, farZ: farZ, rasterizationRateMap: rasterizationRateMap, queuedFrame: queuedFrame, framePose: framePose, simdDeviceAnchor: simdDeviceAnchor)
endRenderStreamingFrame(renderEncoder: encoder)
}
renderStreamingFrameOverlays(0, commandBuffer: commandBuffer, renderTargetColor: drawable.colorTextures[0], renderTargetDepth: drawable.depthTextures[0], viewports: viewports, viewTransforms: viewTransforms, viewTangents: viewTangents, nearZ: nearZ, farZ: farZ, rasterizationRateMap: rasterizationRateMap, queuedFrame: queuedFrame, framePose: framePose, simdDeviceAnchor: simdDeviceAnchor)
if isReprojected && useApplesReprojection {
LayerRenderer.Clock().wait(until: drawable.frameTiming.renderingDeadline)
}
if isReprojected {
reprojectedFramesInARow += 1
if reprojectedFramesInARow > 90 {
fadeInOverlayAlpha += 0.02
}
}
else {
reprojectedFramesInARow = 0
fadeInOverlayAlpha -= 0.02
}
}
else
{
reprojectedFramesInARow = 0;
let noFramePose = WorldTracker.shared.worldTracking.queryDeviceAnchor(atTimestamp: vsyncTime)?.originFromAnchorTransform ?? matrix_identity_float4x4
// TODO: draw a cool loading logo
renderNothing(0, commandBuffer: commandBuffer, renderTargetColor: drawable.colorTextures[0], renderTargetDepth: drawable.depthTextures[0], viewports: viewports, viewTransforms: viewTransforms, viewTangents: viewTangents, nearZ: nearZ, farZ: farZ, rasterizationRateMap: rasterizationRateMap, queuedFrame: queuedFrame, framePose: noFramePose, simdDeviceAnchor: simdDeviceAnchor)
if EventHandler.shared.totalFramesRendered > 300 {
fadeInOverlayAlpha += 0.02
}
renderOverlay(commandBuffer: commandBuffer, renderTargetColor: drawable.colorTextures[0], renderTargetDepth: drawable.depthTextures[0], viewports: viewports, viewTransforms: viewTransforms, viewTangents: viewTangents, nearZ: nearZ, farZ: farZ, rasterizationRateMap: rasterizationRateMap, queuedFrame: queuedFrame, framePose: noFramePose, simdDeviceAnchor: simdDeviceAnchor)
if !isRealityKit {
renderStreamingFrameDepth(commandBuffer: commandBuffer, renderTargetColor: drawable.colorTextures[0], renderTargetDepth: drawable.depthTextures[0], viewports: viewports, viewTransforms: viewTransforms, viewTangents: viewTangents, nearZ: nearZ, farZ: farZ, rasterizationRateMap: rasterizationRateMap, queuedFrame: queuedFrame)
}
}
coolPulsingColorsTime += 0.005
if coolPulsingColorsTime > 4.0 {
coolPulsingColorsTime = 0.0
}
if fadeInOverlayAlpha > 1.0 {
fadeInOverlayAlpha = 1.0
}
if fadeInOverlayAlpha < 0.0 {
fadeInOverlayAlpha = 0.0
}
drawable.encodePresent(commandBuffer: commandBuffer)
commandBuffer.commit()
frame.endSubmission()
EventHandler.shared.lastQueuedFrame = queuedFrame
EventHandler.shared.lastQueuedFramePose = framePreviouslyPredictedPose
}
func coolPulsingColor() -> simd_float4 {
// Color picked from the ALVR logo
let lightColor = simd_float4(0.05624, 0.73124, 0.75999, 1.0)
let darkColor = simd_float4(0.01305, 0.26223, 0.63828, 1.0)
var switchingFnT: Float = 0.0 // hold on light
if coolPulsingColorsTime >= 1.0 && coolPulsingColorsTime < 2.0 {
switchingFnT = coolPulsingColorsTime - 1.0 // light -> dark
}
else if coolPulsingColorsTime >= 2.0 && coolPulsingColorsTime < 3.0 {
switchingFnT = 1.0 // hold on dark
}
else if coolPulsingColorsTime >= 3.0 && coolPulsingColorsTime < 4.0 {
switchingFnT = coolPulsingColorsTime - 2.0 // dark -> light
}
var switchingFn = sin(switchingFnT * Float.pi * 0.5)
if coolPulsingColorsTime >= 4.0 {
switchingFn = 0.0
}
return simd_mix(lightColor, darkColor, simd_float4(repeating: switchingFn))
}
func planeToColor(plane: PlaneAnchor) -> simd_float4 {
let planeAlpha = fadeInOverlayAlpha
var subtleChange = 0.75 + ((Float(plane.id.hashValue & 0xFF) / Float(0xff)) * 0.25)
if drawPlanesWithInformedColors {
switch(plane.classification) {
case .ceiling: // #62ea80
return simd_float4(0.3843137254901961, 0.9176470588235294, 0.5019607843137255, 1.0) * subtleChange * planeAlpha
case .door: // #1a5ff4
return simd_float4(0.10196078431372549, 0.37254901960784315, 0.9568627450980393, 1.0) * subtleChange * planeAlpha
case .floor: // #bf6505
return simd_float4(0.7490196078431373, 0.396078431372549, 0.0196078431372549, 1.0) * subtleChange * planeAlpha
case .seat: // #ef67af
return simd_float4(0.9372549019607843, 0.403921568627451, 0.6862745098039216, 1.0) * subtleChange * planeAlpha
case .table: // #c937d3
return simd_float4(0.788235294117647, 0.21568627450980393, 0.8274509803921568, 1.0) * subtleChange * planeAlpha
case .wall: // #dced5e
return simd_float4(0.8627450980392157, 0.9294117647058824, 0.3686274509803922, 1.0) * subtleChange * planeAlpha
case .window: // #4aefce
return simd_float4(0.2901960784313726, 0.9372549019607843, 0.807843137254902, 1.0) * subtleChange * planeAlpha
case .unknown: // #0e576b
return simd_float4(0.054901960784313725, 0.3411764705882353, 0.4196078431372549, 1.0) * subtleChange * planeAlpha
case .undetermined: // #749606
return simd_float4(0.4549019607843137, 0.5882352941176471, 0.023529411764705882, 1.0) * subtleChange * planeAlpha
default:
return simd_float4(1.0, 0.0, 0.0, 1.0) * subtleChange * planeAlpha // red
}
}
else {
if plane.classification == .ceiling {
subtleChange *= 0.4
}
else if plane.classification == .wall {
subtleChange *= 0.1
}
else if plane.classification == .floor {
subtleChange *= 0.2
}
else if plane.classification == .seat {
subtleChange *= 0.5
}
else {
subtleChange = 0.01
}
return coolPulsingColor() * subtleChange * planeAlpha
}
}
func planeToLineColor(plane: PlaneAnchor) -> simd_float4 {
let planeAlpha = fadeInOverlayAlpha
let subtleChange = 0.75 + ((Float(plane.id.hashValue & 0xFF) / Float(0xff)) * 0.25)
if drawPlanesWithInformedColors {
return planeToColor(plane: plane)
}
else {
return coolPulsingColor() * subtleChange * planeAlpha
}
}
func renderStreamingFrameDepth(commandBuffer: MTLCommandBuffer, renderTargetColor: MTLTexture, renderTargetDepth: MTLTexture, viewports: [MTLViewport], viewTransforms: [simd_float4x4], viewTangents: [simd_float4], nearZ: Double, farZ: Double, rasterizationRateMap: MTLRasterizationRateMap?, queuedFrame: QueuedFrame?) {
if currentRenderColorFormat != renderTargetColor.pixelFormat && isRealityKit {
return
}
let renderPassDescriptor = MTLRenderPassDescriptor()
renderPassDescriptor.colorAttachments[0].texture = renderTargetColor
renderPassDescriptor.colorAttachments[0].loadAction = .load
renderPassDescriptor.colorAttachments[0].storeAction = .dontCare
renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColor(red: 0.0, green: 0.0, blue: 0.0, alpha: 0.0)
renderPassDescriptor.depthAttachment.texture = renderTargetDepth
renderPassDescriptor.depthAttachment.loadAction = .clear
renderPassDescriptor.depthAttachment.storeAction = .store
renderPassDescriptor.depthAttachment.clearDepth = 0.000000001
renderPassDescriptor.rasterizationRateMap = rasterizationRateMap
renderPassDescriptor.renderTargetArrayLength = viewports.count
/// Final pass rendering code here
guard let renderEncoder = commandBuffer.makeRenderCommandEncoder(descriptor: renderPassDescriptor) else {
fatalError("Failed to create render encoder")
}
renderEncoder.label = "Rerender depth"
renderEncoder.pushDebugGroup("Draw ALVR Frame Depth")
renderEncoder.setCullMode(.back)
renderEncoder.setFrontFacing(.counterClockwise)
renderEncoder.setRenderPipelineState(videoFrameDepthPipelineState)
renderEncoder.setDepthStencilState(depthStateAlways)
renderEncoder.setVertexBuffer(dynamicUniformBuffer, offset:uniformBufferOffset, index: BufferIndex.uniforms.rawValue)
renderEncoder.setViewports(viewports)
if viewports.count > 1 {
var viewMappings = (0..<viewports.count).map {
MTLVertexAmplificationViewMapping(viewportArrayIndexOffset: UInt32($0),
renderTargetArrayIndexOffset: UInt32($0))
}
renderEncoder.setVertexAmplificationCount(viewports.count, viewMappings: &viewMappings)
}
renderEncoder.drawPrimitives(type: .triangleStrip, vertexStart: 0, vertexCount: 4)
renderEncoder.popDebugGroup()
renderEncoder.endEncoding()
}
func renderNothing(_ whichIdx: Int, commandBuffer: MTLCommandBuffer, renderTargetColor: MTLTexture, renderTargetDepth: MTLTexture, viewports: [MTLViewport], viewTransforms: [simd_float4x4], viewTangents: [simd_float4], nearZ: Double, farZ: Double, rasterizationRateMap: MTLRasterizationRateMap?, queuedFrame: QueuedFrame?, framePose: simd_float4x4, simdDeviceAnchor: simd_float4x4) {
if currentRenderColorFormat != renderTargetColor.pixelFormat && isRealityKit {
return
}
self.updateDynamicBufferState()
self.updateGameStateForVideoFrame(whichIdx, viewTransforms: viewTransforms, viewTangents: viewTangents, nearZ: nearZ, farZ: farZ, framePose: framePose, simdDeviceAnchor: simdDeviceAnchor)
let renderPassDescriptor = MTLRenderPassDescriptor()
renderPassDescriptor.colorAttachments[0].texture = renderTargetColor
renderPassDescriptor.colorAttachments[0].loadAction = isRealityKit ? (whichIdx == 0 ? .clear : .load) : .clear
renderPassDescriptor.colorAttachments[0].storeAction = .store
renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColor(red: 0.0, green: 0.0, blue: 0.0, alpha: 0.0)
renderPassDescriptor.depthAttachment.texture = renderTargetDepth
renderPassDescriptor.depthAttachment.loadAction = .clear
renderPassDescriptor.depthAttachment.storeAction = .store
renderPassDescriptor.depthAttachment.clearDepth = 0.0
renderPassDescriptor.rasterizationRateMap = rasterizationRateMap
renderPassDescriptor.renderTargetArrayLength = viewports.count
/// Final pass rendering code here
guard let renderEncoder = commandBuffer.makeRenderCommandEncoder(descriptor: renderPassDescriptor) else {
fatalError("Failed to create render encoder")
}
renderEncoder.label = "Rendering Nothing"
renderEncoder.pushDebugGroup("Draw Nothing")
renderEncoder.setCullMode(.back)
renderEncoder.setFrontFacing(.counterClockwise)
renderEncoder.setRenderPipelineState(videoFrameDepthPipelineState)
renderEncoder.setDepthStencilState(depthStateAlways)
renderEncoder.setVertexBuffer(dynamicUniformBuffer, offset:uniformBufferOffset, index: BufferIndex.uniforms.rawValue)
renderEncoder.setVertexBuffer(dynamicPlaneUniformBuffer, offset:planeUniformBufferOffset, index: BufferIndex.planeUniforms.rawValue) // unused
renderEncoder.setFragmentBuffer(dynamicEncodingUniformBuffer, offset:encodingUniformBufferOffset, index: BufferIndex.encodingUniforms.rawValue) // unused
renderEncoder.setViewports(viewports)
if viewports.count > 1 {
var viewMappings = (0..<viewports.count).map {
MTLVertexAmplificationViewMapping(viewportArrayIndexOffset: UInt32($0),
renderTargetArrayIndexOffset: UInt32($0))
}
renderEncoder.setVertexAmplificationCount(viewports.count, viewMappings: &viewMappings)
}
renderEncoder.setVertexBuffer(fullscreenQuadBuffer, offset: 0, index: VertexAttribute.position.rawValue)
renderEncoder.setVertexBuffer(fullscreenQuadBuffer, offset: (3*4)*4, index: VertexAttribute.texcoord.rawValue)
renderEncoder.drawPrimitives(type: .triangleStrip, vertexStart: 0, vertexCount: 4)
renderEncoder.endEncoding()
}
func renderOverlay(commandBuffer: MTLCommandBuffer, renderTargetColor: MTLTexture, renderTargetDepth: MTLTexture, viewports: [MTLViewport], viewTransforms: [simd_float4x4], viewTangents: [simd_float4], nearZ: Double, farZ: Double, rasterizationRateMap: MTLRasterizationRateMap?, queuedFrame: QueuedFrame?, framePose: simd_float4x4, simdDeviceAnchor: simd_float4x4)
{
if currentRenderColorFormat != renderTargetColor.pixelFormat && isRealityKit {
return
}
// Toss out the depth buffer, keep colors
let renderPassDescriptor = MTLRenderPassDescriptor()
renderPassDescriptor.colorAttachments[0].texture = renderTargetColor
renderPassDescriptor.colorAttachments[0].loadAction = .load
renderPassDescriptor.colorAttachments[0].storeAction = .store
renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColor(red: 0.0, green: 0.0, blue: 0.0, alpha: 0.0)
renderPassDescriptor.depthAttachment.texture = renderTargetDepth
renderPassDescriptor.depthAttachment.loadAction = .clear
renderPassDescriptor.depthAttachment.storeAction = .dontCare
renderPassDescriptor.depthAttachment.clearDepth = 0.0
renderPassDescriptor.rasterizationRateMap = rasterizationRateMap
renderPassDescriptor.renderTargetArrayLength = viewports.count
guard let renderEncoder = commandBuffer.makeRenderCommandEncoder(descriptor: renderPassDescriptor) else {
fatalError("Failed to create render encoder")
}
renderEncoder.label = "Plane Render Encoder"
renderEncoder.pushDebugGroup("Draw planes")
renderEncoder.setCullMode(.back)
renderEncoder.setFrontFacing(.counterClockwise)
renderEncoder.setViewports(viewports)
renderEncoder.setVertexBuffer(dynamicUniformBuffer, offset:uniformBufferOffset, index: BufferIndex.uniforms.rawValue)
renderEncoder.setVertexBuffer(dynamicPlaneUniformBuffer, offset:planeUniformBufferOffset, index: BufferIndex.planeUniforms.rawValue) // unused
renderEncoder.setFragmentBuffer(dynamicEncodingUniformBuffer, offset:encodingUniformBufferOffset, index: BufferIndex.encodingUniforms.rawValue) // unused
if viewports.count > 1 {
var viewMappings = (0..<viewports.count).map {
MTLVertexAmplificationViewMapping(viewportArrayIndexOffset: UInt32($0),
renderTargetArrayIndexOffset: UInt32($0))
}
renderEncoder.setVertexAmplificationCount(viewports.count, viewMappings: &viewMappings)
}
renderEncoder.setRenderPipelineState(pipelineState)
renderEncoder.setDepthStencilState(depthStateGreater)
WorldTracker.shared.lockPlaneAnchors()
// Render planes
for plane in WorldTracker.shared.planeAnchors {
let plane = plane.value
let faces = plane.geometry.meshFaces
renderEncoder.setVertexBuffer(plane.geometry.meshVertices.buffer, offset: 0, index: VertexAttribute.position.rawValue)
renderEncoder.setVertexBuffer(plane.geometry.meshVertices.buffer, offset: 0, index: VertexAttribute.texcoord.rawValue)
//self.updateGameStateForVideoFrame(drawable: drawable, framePose: framePose, planeTransform: plane.originFromAnchorTransform)
selectNextPlaneUniformBuffer()
self.planeUniforms[0].planeTransform = plane.originFromAnchorTransform
self.planeUniforms[0].planeColor = planeToColor(plane: plane)
self.planeUniforms[0].planeDoProximity = 1.0
renderEncoder.setVertexBuffer(dynamicPlaneUniformBuffer, offset:planeUniformBufferOffset, index: BufferIndex.planeUniforms.rawValue)
renderEncoder.setTriangleFillMode(.fill)
renderEncoder.drawIndexedPrimitives(type: faces.primitive == .triangle ? MTLPrimitiveType.triangle : MTLPrimitiveType.line,
indexCount: faces.count*3,
indexType: faces.bytesPerIndex == 2 ? MTLIndexType.uint16 : MTLIndexType.uint32,
indexBuffer: faces.buffer,
indexBufferOffset: 0)
}
// Render lines
for plane in WorldTracker.shared.planeAnchors {
let plane = plane.value
let faces = plane.geometry.meshFaces
renderEncoder.setVertexBuffer(plane.geometry.meshVertices.buffer, offset: 0, index: VertexAttribute.position.rawValue)
renderEncoder.setVertexBuffer(plane.geometry.meshVertices.buffer, offset: 0, index: VertexAttribute.texcoord.rawValue)
//self.updateGameStateForVideoFrame(drawable: drawable, framePose: framePose, planeTransform: plane.originFromAnchorTransform)
selectNextPlaneUniformBuffer()
self.planeUniforms[0].planeTransform = plane.originFromAnchorTransform
self.planeUniforms[0].planeColor = planeToLineColor(plane: plane)
self.planeUniforms[0].planeDoProximity = 0.0
renderEncoder.setVertexBuffer(dynamicPlaneUniformBuffer, offset:planeUniformBufferOffset, index: BufferIndex.planeUniforms.rawValue)
renderEncoder.setTriangleFillMode(.lines)
renderEncoder.drawIndexedPrimitives(type: faces.primitive == .triangle ? MTLPrimitiveType.triangle : MTLPrimitiveType.line,
indexCount: faces.count*3,
indexType: faces.bytesPerIndex == 2 ? MTLIndexType.uint16 : MTLIndexType.uint32,
indexBuffer: faces.buffer,
indexBufferOffset: 0)
}
WorldTracker.shared.unlockPlaneAnchors()