SceneKit: What s New Session 604
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1 Graphics and Games #WWDC17 SceneKit: What s New Session 604 Thomas Goossens, SceneKit engineer Amaury Balliet, SceneKit engineer Anatole Duprat, SceneKit engineer Sébastien Métrot, SceneKit engineer 2017 Apple Inc. All rights reserved. Redistribution or public display not permitted without written permission from Apple.
2 SceneKit High level API for 3D graphics Supported on every Apple platform
3 Related Sessions What s New in SceneKit WWDC 2014 Enhancements to SceneKit WWDC 2015 Advances in SceneKit Rendering WWDC 2016
4 Camera enhancements
5 Camera enhancements Tessellation and subdivision surfaces
6 Camera enhancements Tessellation and subdivision surfaces Animation improvements
7 Camera enhancements Tessellation and subdivision surfaces Animation improvements Developer tools
8 Camera enhancements Tessellation and subdivision surfaces Animation improvements Developer tools Related technologies
9 Demo
10 Camera Enhancements
11 Camera Enhancements Physically Based Camera API Depth of field Object motion blur Screen space ambient occlusion Camera control
12 //Legacy Camera API // Move away from legacy projection model camera.yfov = 60.0 camera.xfov = 60.0
13 //Physically Based Camera NEW // configure field of view camera.fieldofview = 60.0 //degrees // or focal camera.focallength = 50.0 //mm camera.sensorheight = 24.0 //mm
14 Physically Based Camera Depth of field NEW Approximate physical photo camera // configure the depth of field camera.wantsdepthoffield = true camera.focusdistance = 0.8 //meters camera.fstop = 5.6
15 Physically Based Camera Bokeh NEW Automatic bokeh Works best with HDR camera // configure the camera for HDR camera.wantshdr = true
16 Physically Based Camera Bokeh NEW Automatic bokeh Works best with HDR camera // configure the camera for HDR camera.wantshdr = true
17 Physically Based Camera Bokeh NEW 5 // configure the depth of field camera.aperturebladecount =
18 Physically Based Camera Bokeh NEW 5 // configure the depth of field camera.aperturebladecount =
19 Motion Blur // Activate Motion Blur camera.motionblurintensity = 1.0
20 Object Motion Blur
21 Object Motion Blur
22 Ambient Occlusion NEW
23 Ambient Occlusion Principle NEW 100%
24 Ambient Occlusion Principle NEW 45%
25 Ambient Occlusion Screen space ambient occlusion NEW depth normal
26 Ambient Occlusion Screen space ambient occlusion NEW
27 Ambient Occlusion Screen space ambient occlusion NEW
28 //Ambient Occlusion //Screen space ambient occlusion NEW // Activate SSAO camera.screenspaceambientocclusionintensity = 1.0 // Configure SSAO camera.screenspaceambientocclusionradius = 5 //scene units camera.screenspaceambientocclusionbias = 0.03 //scene units camera.screenspaceambientocclusiondepththreshold = 0.2 //scene units camera.screenspaceambientocclusionnormalthreshold = 0.3
29 Demo Anatole Duprat, SceneKit engineer
30 Camera Control Thomas Goossens, SceneKit engineer
31 Camera Control Common challenges NEW Object inspection and scene browsing Camera with a behavior
32 Camera Control Object inspection and scene browsing Previously Directly manipulate the camera position, rotation or transform For debugging use allowscameracontrol API
33 Camera Control Object inspection and scene browsing NEW Introducing SCNCameraController Built-in support for common controls modes Default camera controller provided by SCNView // turn on camera control scnview.allowscameracontrol = true // configure the camera control behaviour scnview.defaultcameracontroller.interactionmode =.orbitturntable scnview.defaultcameracontroller.inertiaenabled = true scnview.defaultcameracontroller.maximumverticalangle = 45 //degrees
34 Camera Control SCNCameraController Orbit Turntable Roll Orbit Arcball Frame nodes Orbit Angle Mapping Dolly Fly Inertia Pan Truck
35 Camera Control SCNCameraController examples Orbit Turntable
36 Camera Control SCNCameraController examples Orbit Arcball
37 Camera Control SCNCameraController examples Fly
38 Camera Control Common challenges Object inspection and scene browsing Camera with a behavior
39 Camera Control Constraints Chain SCNConstraint objects to define a camera behavior
40 Camera Control Constraints Chain SCNConstraint objects to define a camera behavior SCNLookAtConstraint SCNTransformConstraint SCNBillboardConstraint SCNIKConstraint
41 Camera Control Constraints NEW Chain SCNConstraint objects to define a camera behavior SCNLookAtConstraint SCNDistanceConstraint SCNTransformConstraint SCNReplicatorConstraint SCNBillboardConstraint SCNAccelerationConstraint SCNIKConstraint SCNSliderConstraint SCNAvoidOccluderConstraint
42 Camera Control Constraints NEW SCNDistanceConstraint TargetNode MinDistance MaxDistance
43 Camera Control Constraints NEW SCNReplicatorConstraint TargetNode Replicated Position Offset
44 Camera Control Constraints NEW SCNAccelerationConstraint Last Frame Position Next Frame Target Position Resolved Position Max Velocity
45 Camera Control Building a behavior from constraints
46 Camera Control Building a behavior from constraints SCNLookAtConstraint
47 Camera Control Building a behavior from constraints SCNReplicatorConstraint SCNLookAtConstraint
48 Camera Control Building a behavior from constraints SCNReplicatorConstraint SCNLookAtConstraint
49 Camera Control Building a behavior from constraints SCNDistanceConstraint SCNLookAtConstraint SCNAccelerationConstraint
50 Camera Control In the «Fox 2» demo
51 Camera Control Node manipulation helpers NEW Math helpers on SCNNode for common transformations Vector conversion from node to node SCNNode transforms properties available as SIMD types // Working with SIMD anode.simdposition += anode.simdtransform * anothernode.simdposition
52 Tessellation and Subdivision Surfaces Amaury Balliet, SceneKit engineer
53 Tessellation and Subdivision Surfaces How tessellation works New features based on tessellation Subdivision surfaces
54 Tessellation Motivation Asset comes as a low-resolution model (coarse mesh) Decreased memory bandwidth High resolution model generated from the coarser model High resolution model not stored in memory Generated on-the-fly by the GPU Control over the amount of detail generated
55 Tessellation How Tessellation Works Tessellation factors Start with a patch glpatchparameteri(gl_patch_vertices, 3); gldrawarrays(gl_patches, ) Triangle Patch
56 Tessellation How Tessellation Works Tessellation factors Set the outer tessellation levels gl_tesslevelouter[0] = 2.0 gl_tesslevelouter[1] = 2.0 gl_tesslevelouter[2] = 2.0
57 Tessellation How Tessellation Works Tessellation factors Set the outer tessellation levels gl_tesslevelouter[0] = 2.0 gl_tesslevelouter[1] = 2.0 gl_tesslevelouter[2] = 2.0
58 Tessellation How Tessellation Works Tessellation factors Set the outer tessellation levels gl_tesslevelouter[0] = 4.0 gl_tesslevelouter[1] = 2.0 gl_tesslevelouter[2] = 2.0
59 Tessellation How Tessellation Works Tessellation factors Set the outer tessellation levels gl_tesslevelouter[0] = 6.0 gl_tesslevelouter[1] = 2.0 gl_tesslevelouter[2] = 2.0
60 Tessellation How Tessellation Works Tessellation factors Set the outer tessellation levels gl_tesslevelouter[0] = 6.0 gl_tesslevelouter[1] = 2.0 gl_tesslevelouter[2] = 2.0
61 Tessellation How Tessellation Works Tessellation factors Set the outer tessellation levels gl_tesslevelouter[0] = 6.0 gl_tesslevelouter[1] = 2.0 gl_tesslevelouter[2] = 2.0
62 Tessellation How Tessellation Works Tessellation factors Set the outer tessellation levels gl_tesslevelouter[0] = 6.0 gl_tesslevelouter[1] = 4.0 gl_tesslevelouter[2] = 2.0
63 Tessellation How Tessellation Works Tessellation factors Set the outer tessellation levels gl_tesslevelouter[0] = 6.0 gl_tesslevelouter[1] = 4.0 gl_tesslevelouter[2] = 2.0
64 Tessellation How Tessellation Works Tessellation factors Set the outer tessellation levels gl_tesslevelouter[0] = 6.0 gl_tesslevelouter[1] = 4.0 gl_tesslevelouter[2] = 2.0
65 Tessellation How Tessellation Works Tessellation factors Set the outer tessellation levels gl_tesslevelouter[0] = 6.0 gl_tesslevelouter[1] = 4.0 gl_tesslevelouter[2] = 4.0
66 Tessellation How Tessellation Works Tessellation factors Set the outer tessellation levels gl_tesslevelouter[0] = 6.0 gl_tesslevelouter[1] = 4.0 gl_tesslevelouter[2] = 4.0
67 Tessellation How Tessellation Works Tessellation factors Set the inner tessellation levels gl_tesslevelouter[0] = 6.0 gl_tesslevelouter[1] = 4.0 gl_tesslevelouter[2] = 4.0 gl_tesslevelinner[0] = 2.0
68 Tessellation How Tessellation Works Tessellation factors Set the inner tessellation levels gl_tesslevelouter[0] = 6.0 gl_tesslevelouter[1] = 4.0 gl_tesslevelouter[2] = 4.0 gl_tesslevelinner[0] = 3.0
69 Tessellation How Tessellation Works Tessellation factors Set the inner tessellation levels gl_tesslevelouter[0] = 6.0 gl_tesslevelouter[1] = 4.0 gl_tesslevelouter[2] = 4.0 gl_tesslevelinner[0] = 6.0
70 Tessellation How Tessellation Works Tessellation factors Evaluate vertex attributes into tessellated primitives gl_tesslevelouter[0] = 6.0 gl_tesslevelouter[1] = 4.0 gl_tesslevelouter[2] = 4.0 gl_tesslevelinner[0] = 6.0
71 Tessellation SCNGeometryTessellator NEW
72 Tessellation SCNGeometryTessellator NEW let tessellator = SCNGeometryTessellator() geometry.tessellator = tessellator
73 Tessellation Uniform tessellation NEW let tessellator = SCNGeometryTessellator() geometry.tessellator = tessellator // Uniform tessellation tessellator.edgetessellationfactor = 3.0 tessellator.insidetessellationfactor = 3.0
74 Tessellation Local space tessellation NEW let tessellator = SCNGeometryTessellator() geometry.tessellator = tessellator // Local space tessellation tessellator.isadaptive = true tessellator.maximumedgelength = 0.01 // in local space
75 Tessellation Screen space tessellation NEW let tessellator = SCNGeometryTessellator() geometry.tessellator = tessellator // Screen space tessellation tessellator.isadaptive = true tessellator.isscreenspace = true tessellator.maximumedgelength = 50 // pixels
76 Tessellation Tessellated Triangle Patch
77 Tessellation Tessellated Triangle Patch
78 Tessellation and Subdivision Surfaces Tessellation overview New tessellation-based geometry APIs Subdivision surfaces
79 Shader Modifiers Fully supported in tessellation pipeline Allow for completely custom effects // Shader modifier for the "geometry" entry point float3 p = _geometry.position.xyz; float disp = sin(p.x * scn_frame.time) * cos(p.y * scn_frame.time); _geometry.position.xyz += _geometry.normal * disp;
80 Geometry Smoothing NEW // Geometry smoothing tessellator.smoothingmode =.pntriangles
81 Geometry Smoothing NEW // Geometry smoothing tessellator.smoothingmode =.pntriangles
82 Displacement Mapping NEW
83 Displacement Mapping Height maps NEW
84 Displacement Mapping Height maps NEW
85 Displacement Mapping Height maps NEW
86 Displacement Mapping Height maps NEW
87 Displacement Mapping Height maps NEW
88 //Displacement Mapping NEW // Height map material.displacement.contents = "volcano-height-map.png" material.displacement.texturecomponents =.red
89 Displacement Mapping Vector displacement maps NEW
90 Displacement Mapping Vector displacement maps NEW
91 Displacement Mapping Vector displacement maps NEW
92 Displacement Mapping Vector displacement maps NEW
93 //Displacement Mapping NEW // Vector displacement map material.displacement.contents = "water-drop-displacement-map.exr" material.displacement.texturecomponents =.all
94 Tessellation and Subdivision Surfaces Tessellation overview New tessellation-based geometry APIs Subdivision surfaces
95 Subdivision Surfaces Coarse mesh
96 Subdivision Surfaces Subdivision level: 1
97 Subdivision Surfaces Subdivision level: 2
98 Subdivision Surfaces Subdivision level: 3
99 Subdivision Surfaces Subdivision level: 4
100 Subdivision Surfaces Subdivision level: 5
101 Subdivision Surfaces Iterative refinement
102 Subdivision Surfaces Edge and vertex sharpness
103 Subdivision Surfaces Easier and faster to create by artists Reduced file sizes and faster load times Dynamic control on quality of rendered geometry
104 Subdivision Surfaces Original support for CPU-based subdivision Better support for per-face data interpolation (e.g. texture coordinates) // Enable subdivision surfaces geometry.subdivisionlevel = 1
105 OpenSubdiv on Metal
106 Subdivision Surfaces NEW Leverages tessellation with Metal-based GPU backend Both uniform and feature-adaptive subdivision are now supported Efficient implementation for animated models with skinning and morphing
107 Subdivision Surfaces Coarse mesh NEW
108 Subdivision Surfaces Refined mesh NEW
109 Subdivision Surfaces Creases NEW
110 Subdivision Surfaces Feature-adaptive and uniform subdivision NEW
111 Subdivision Surfaces Feature-adaptive and uniform subdivision NEW
112 Subdivision Surfaces Feature-adaptive and uniform subdivision NEW
113 Subdivision Surfaces Feature-adaptive and uniform subdivision NEW
114 Subdivision Surfaces Feature-adaptive and uniform subdivision NEW
115 Subdivision Surfaces Feature-adaptive and uniform subdivision NEW
116 //Subdivision Surfaces //Adaptive subdivision on the GPU NEW // Enable subdivision surfaces geometry.subdivisionlevel = 1 geometry.wantsadaptivesubdivision = true // Enable tessellation let tessellator = SCNGeometryTessellator() geometry.tessellator = tessellator
117 Subdivision Surfaces Faster skinning and morphing NEW Only the coarse mesh is animated Leverages the GPU for morphing, skinning and refinement Coarse mesh Refined mesh Morphing Skinning Refinement Tessellation Post-Tessellation Shader
118 //Subdivision Surfaces //Asset authoring // Preserve topology when importing from files let scene = try! SCNScene(url: url, options: [.preserveoriginaltopology: true]) // Use quads when creating geometries programmatically let element = SCNGeometryElement(data: elementdata, primitivetype:.polygon, primitivecount: 1, bytesperindex: MemoryLayout<UInt8>.size)
119 Demo
120 Tessellation and Subdivision Surfaces All configurations A9 chip
121 Animation Enhancements
122 Animations NEW Introducing SCNAnimation and SCNAnimationPlayer Mutability while playing Speed Pausing Blending Bridged with Core Animation Available on all platforms
123 //Animations //Old approach // start walking character.addanimation(animation, forkey: "walk") // later: stop walking, start jumping character.removeanimation(forkey: "walk") character.addanimation(jumpanimation, forkey: "jump")
124 //Animations //New approach NEW // configure the players character.addanimationplayer(walkanimationplayer, forkey: "walk") character.addanimationplayer(jumpanimationplayer, forkey: "jump") // start walking walkanimationplayer.play() // later: stop walking, start jumping walkanimationplayer.stop() jumpanimationplayer.play()
125 //Animations //New approach NEW // at any time: mutate the players walkanimationplayer.speed = characterspeed // walk slower or faster runanimationplayer.blendfactor = walkrunfactor // `walkrunfactor` of walk // `1.0 - walkrunfactor` of run
126 Animations Animation blending NEW Step Walk Run
127 Animations Animation blending NEW Speed Blend Factors Step Walk Run
128 Animations Performance Starting, pausing and stopping animations is much faster Efficient evaluation of skeletal animation
129 Animations Performance Starting, pausing and stopping animations is much faster Efficient evaluation of skeletal animation
130 Animations Performance Starting, pausing and stopping animations is much faster Efficient evaluation of skeletal animation
131 Developer Tools Sébastien Métrot, SceneKit engineer
132 FPS Gauge Split per categories Real-time Integrated in Xcode Great for performance overview
133 SceneKit Instrument NEW Understand performance issues Record a trace of SceneKit s behavior Accurate per-frame performance analysis
134 SceneKit Instrument NEW
135 SceneKit Instrument NEW
136 SceneKit Instrument NEW
137 SceneKit Instrument NEW
138 SceneKit Instrument NEW
139 SceneKit Instrument NEW
140 SceneKit Instrument Example: Slow shader compilation NEW
141 SceneKit Instrument Example: Slow shader compilation NEW
142 SceneKit Instrument In combination with the Metal Instrument trace NEW
143 SceneKit Capture Debugging with SceneKit
144 SceneKit Capture Debugging with SceneKit View debugger enhancements Captures the current state of your scene
145 SceneKit Capture Debugging with SceneKit View debugger enhancements Captures the current state of your scene
146 SceneKit Capture View debugger enhancements NEW Captures the current state of your scene
147 SceneKit Capture View debugger enhancements NEW Captures the current state of your scene
148 SceneKit Capture View debugger enhancements NEW Captures the current state of your scene
149 SceneKit Scene Editor New features NEW
150 SceneKit Scene Editor New features NEW
151 SceneKit Scene Editor New features NEW
152 SceneKit Scene Editor New features NEW
153 SceneKit Scene Editor New features NEW New Shader Modifier Editor Edit shader and material Supports custom material properties
154 SceneKit Scene Editor More features NEW Displacement Tessellation Support for new constraints Cascaded shadows Procedural sky Override Materials for reference nodes
155 SceneKit Scene Editor More features NEW Displacement Tessellation Support for new constraints Cascaded shadows Procedural sky Override materials for reference nodes
156 SceneKit Scene Editor More features NEW Displacement Tessellation Support for new constraints Cascaded shadows Procedural sky Override materials for reference nodes
157 SceneKit Scene Editor More features NEW Displacement Tessellation Support for new constraints Cascaded shadows Procedural sky Override materials for reference nodes
158 SceneKit Scene Editor More features NEW Displacement Tessellation Support for new constraints Cascaded shadows Procedural sky Override materials for reference nodes
159 SceneKit Scene Editor More features NEW Displacement Tessellation Support for new constraints Cascaded shadows Procedural sky Override materials for reference nodes
160 SceneKit Scene Editor Material overrides Scene SCNNodeReference SCNNodeReference MaxTheRedPanda.scn
161 SceneKit Scene Editor Material overrides Scene SCNNodeReference SCNNodeReference Override Material MaxTheRedPanda.scn
162 Related Technologies Thomas Goossens, SceneKit engineer
163
164 Augmented Reality ARKit ARSCNView Out of the box solution for AR ARSCNView ARSession
165 Augmented Reality ARKit All SceneKit available via ARSCNView Scene graph SCNView Camera Post process Particles ARSCNView ARSession
166 Augmented Reality // Run the AR session arview.session.run(configuration) // Called on the view s delegate // when a new anchor is found by ARKit func renderer(_ renderer: SCNSceneRenderer, didadd node: SCNNode, for anchor: ARAnchor) { // attach a 3D node to the anchor node node.addchildnode(maxtheredpanda) }
167 Augmented Reality ARKit New support for background video Camera feed using AVCaptureDevice Video using AVPlayer Automatic with ARSCNView // Setup background video let capturedevice: AVCaptureDevice = scene.background.contents = capturedevice
168 Augmented Reality Drop shadow trick
169 Augmented Reality Drop shadow trick
170 Augmented Reality Drop shadow trick
171 Augmented Reality Drop shadow trick Material Inspector
172 Augmented Reality Drop shadow trick Material Inspector
173 Augmented Reality Drop shadow trick Light Inspector
174 Augmented Reality Drop shadow trick Light Inspector
175 Augmented Reality Drop shadow trick Light Inspector
176 Related Technologies GameplayKit entity/components NEW GameplayKit SceneKit GKScene GKEntity SCNView GKComponent SCNNode
177 GameplayKit Entity/Components NEW Use GameplayKit to drive SceneKit Integrated in Xcode
178 Related Technologies Model I/O Improved support for USD Better material bridging Support for animations From Art to Engine with Model I/O Executive Ballroom Friday 2:50PM
179 Related Technologies UIFocus support SCNNode conforms to UIFocusItem node.focusbehavior =.none // or.occluding or.focusable // in ViewController override func didupdatefocus(in context: UIFocusUpdateContext, with coordinator: UIFocusAnimationCoordinator) { if let node = context.nextfocuseditem as? SCNNode { // } }
180 UIFocus Support
181 UIFocus Support
182 UIFocus Support
183 UIFocus Support
184 UIFocus Support
185 UIFocus Support
186 UIFocus Support
187 UIFocus Support
188 UIFocus Support
189 UIFocus Support
190 Rendering Additions
191 Point Cloud Rendering NEW geometry.pointsize = size geometry.minimumpointscreenspaceradius = 5.0 geometry.maximumpointscreenspaceradius = 1.0
192 Point Cloud Rendering NEW geometry.pointsize = size geometry.minimumpointscreenspaceradius = 5.0 geometry.maximumpointscreenspaceradius = 1.0
193 Transparency Modes Single layer, dual layer NEW.default.singleLayer.dualLayer
194 Transparency Modes Dual layer
195 Cascaded Shadow Maps MaxShadowDistance znear zfar cascadesplittingfactor
196 // Cascaded Shadow Maps // Cascades NEW // activate shadow cascade light.shadowcascadecount = 4 // configure shadow map sizes and cascade splitting light.shadowmapsize = CGSize(width: 512, height: 512) light.shadowcascadesplittingfactor = 0.25
197 Cascaded Shadow Maps
198 Summary
199 Summary
200 More Information
201 Related Sessions Introducing Metal 2 Executive Ballroom Tuesday 1:50PM Introducing ARKit: Augmented Reality for ios Hall 3 Tuesday 5:10PM Debugging with Xcode 9 Hall 2 Wednesday 10:00AM SceneKit in Swift Playgrounds Grand Ballroom B Thursday 9:00AM Focus Interaction in tvos 11 Grand Ballroom A Thursday 9:00AM Metal 2 Optimizing and Debugging Grand Ballroom B Thursday 3:10PM Going Beyond 2D with SpriteKit Executive Ballroom Friday 10:00AM From Art to Engine with Model I/O Executive Ballroom Friday 2:50PM
202 Labs Model I/O and GameplayKit lab Technology Lab G Tues 9:00AM 12:00PM SceneKit Lab Technology Lab G Wed 1:00PM 4:10PM ARKit Lab Technology Lab A Wed 1:00AM 3:10PM ARKit Lab Technology Lab A Thur 12:00PM 3:10PM
203
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