Lightmapping for beginners- Unite Copenhagen 2019

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This session introduces the basics of lightmapping for beginners. Learn about some of the most common issues new users struggle with and how to solve them. Attendees will also see some of the new features planned for 2019.3. Speakers: Jennifer Nordwall- Unity Watch the session on YouTube: https://youtu.be/pcXpY_IBSeU

Technologie

5
Jennifer Nordwall
Graphics and Tools programmer
Lighting Team
Bake at the speed of light

GenerativeArt—MadewithUnity
Baking at the speed of light
• The Basics
• Common Issues
• New Features

GenerativeArt—MadewithUnity
Progressive Lightmapper

GenerativeArt—MadewithUnity
Direct light only Indirect Global Illumination

GenerativeArt—MadewithUnity
Object type Realtime Baked Global Illumination
Light type Realtime Baked
Direct Light Dynamic Realtime None
Static Realtime Baked
Indirect Light Dynamic None None
Static None Baked

GenerativeArt—MadewithUnity
The different modes
Mode Direct Light Indirect Light Shadows
Baked Indirect Realtime Baked Realtime
Shadowmask Realtime Using
Shadowmask
Subtractive Realtime (dynamic)
Baked (static)
1 Realtime shadow
caster

Summary
Object type Realtime Baked Global Illumination
Light type Realtime Baked Mixed
Direct Light Dynamic Realtime None Realtime / Baked
Static Realtime Baked Realtime / Baked
Indirect
Light
Dynamic None None None
Static None Baked Baked

GenerativeArt—MadewithUnity
Light sources
Direct Samples Indirect Samples Environment Samples
Area light Emissives Skybox
Directional light
Point light
Spot light

2 min
5 Direct Samples
50 Indirect Samples
1 Bounce
6 min
10 Direct Samples
100 Indirect Samples
2 Bounces
15 min
30 Direct Samples
300 Indirect Samples
2 Bounces
21:45 min
2000 Samples
1:35 min
100 Samples
10:55 min
1000 Samples

40
11:50 min
No Filtering
1000 Samples
13:00 min
Filtering
1000 Samples

GenerativeArt—MadewithUnity
Common Issues

GenerativeArt—MadewithUnity
New Features

64
Denoisers
Name Works on
Open Image Denoiser All platforms
Optix Nvidia
Radeon Pro AMD

68
3:00 min
Denoising
20/50/50 Samples
13:00 min
Filtering
1000 Samples

70
Contribute GI Receive GI
No Light Probes
No Lightmaps Not possible
Yes Light Probes New!
Yes Lightmaps Old “Lightmap Static”

71
Contribute GI Receive GI
No Light Probes
No Lightmaps Not possible
Yes Light Probes New!
Yes Lightmaps Old “Lightmap Static”

72
Contribute GI Receive GI
No Light Probes
No Lightmaps Not possible
Yes Light Probes New!
Yes Lightmaps Old “Lightmap Static”

73
Contribute GI Receive GI
No Light Probes
No Lightmaps Not possible
Yes Light Probes New!
Yes Lightmaps Old “Lightmap Static”

74
Contribute GI Receive GI
No Light Probes
No Lightmaps Not possible
Yes Light Probes New!
Yes Lightmaps Old “Lightmap Static”

New API
• UnityEngine.LightProbes.Tetrahedralize();
• UnityEngine.LightProbes.TetrahedralizeAsync();
• Expensive. Call with care.

GenerativeArt—MadewithUnity
Thanks to
• Lighting Team
• Kieran Colenutt & Thomas Hourdel for the art

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