The Technology Behind the Elemental Demo - Unreal Engine

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Voxelization 2/2 Advances in Real-Time Rendering in 3D Graphics and Games Course � Pixel shader pass using hardware rasterizer � One rasterization pass per axis (X, Y, Z) to avoid holes � Shader evaluates artist defined material � Output: fragment queue that is processed by following CS � Compute Shader pass � Update octree data structures (in parallel) � Stores voxel data in leaves � 2 Pass method � Better occupancy for second pass (2x2 quad) � Shader compile time (reuse CS)
Voxel Lighting � Compute shading and store Radiance � Input: 2x2x2 material attributes, normal � Output: 2x2x2 HDR color and opacity � Accumulate Irradiance and Shade � Add direct light with shadow maps � Add ambient color � Combine with albedo color � Add emissive color Advances in Real-Time Rendering in 3D Graphics and Games Course 3D Scene Voxel Lighting Data
Page 1 and 2: Advances in Real-Time Rendering in
Page 3 and 4: Overview � Real-time Demo � Gra
Page 5 and 6: Real-Time Demo Advances in Real-Tim
Page 7 and 8: Working on Unreal Engine 4 � This
Page 9 and 10: Voxel Cone Tracing Concept � Volu
Page 11 and 12: Using Voxel Cone Tracing for GI 2/2
Page 13 and 14: Sparse Voxel Octree � Mapping fun
Page 15: Voxelization 1/2 Advances in Real-T
Page 19 and 20: The Cone Trace function � � Adv
Page 21 and 22: Specular Sampling 2/2 Reference �
Page 23 and 24: Diffuse Sampling 2/2 Advances in Re
Page 25 and 26: Voxel Lighting Examples 2/3 Advance
Page 27 and 28: Shading Advances in Real-Time Rende
Page 29 and 30: Deferred Shading Name Format Usage
Page 31 and 32: Gaussian Specular Dot = saturate(do
Page 33 and 34: Specular Comparison Point Light Poi
Page 35 and 36: New post processing graph � Graph
Page 37 and 38: SSAO sampling Advances in Real-Time
Page 39 and 40: SSAO Example SSAO (Depth only) Adva
Page 41 and 42: Image Based Lens Flares 1/2 Advance
Page 43 and 44: IB Lens Flares Examples Advances in
Page 45 and 46: Eye Adaptation Advances in Real-Tim
Page 47 and 48: GPU accelerated particles Advances
Page 49 and 50: Particle Curves � Concept � 1D
Page 51 and 52: Shadow receiving Translucency Advan
Page 53 and 54: 1 Million Particles Advances in Rea
Page 57 and 58: References 1/2 � [Crassin11] Inte
Page 61 and 62: Bloom 1/2 [Kawase04] � Goal: Larg
Page 63 and 64: Bloom Example Bloom with single Gau
Page 65 and 66: GBuffer Blur 2/2 Advances in Real-T
Page 67 and 68:
SSS Material Example unshadowed Adv
Page 69 and 70:
Voxel Lighting Examples 3/5 disable
Page 71:
Voxel Lighting Examples 5/5 Advance
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The Technology Behind the Elemental Demo - Unreal Engine

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