unity bootcamp post mortem

Amilton Diesel, Raphael Baldi, Maurício LongoniAquiris Game Studio

Bootcamp PostmortemDeveloping AAA games in Unity 3

Amilton DieselAquiris Game [email protected]

Briefing

Meeting Unity 3


• Demonstrate features• Lightmapping• OCC System• Tree Editor• Audio Filters

• Deffered Rendering• Post-Processing FX• Core Optimizations• Streaming Content• Many more…

Main Concept


• Military Trainning• Dynamic loadings• Stunning Graphics• Cutscenes

Main Navigation Board

Enemies


• Not really smart• Not boring either• Original design

Enemies


Planning the Graphics

Storyboard


• Detailed Cutscenes• First color guide

Detailed Cutscenes Storyboard

Color Palette


• Timeline oriented• Detailed mood board

Timeline color palette

Collecting References


• Search for real places

• Filter pictures

Planning Spaces


• Composing a level by pictures

• Connecting buildings

Timeline color palette

Composition Rules


• One place to remember

• Same drawing and photography rules

Symmetrical Perspective

Divine Proportions and Rule of Thirds

Unreachable Illusion


• Large scale feeling• More interesting to

explore

The Unreachable Illusion

Popular examples


Environment Art

Modeling


• Individual Prefabs• Unity as a level

design tool

Texture Scale


• Real world scale• 1cm² = 1px²

Texture Division


• Tileable vs unique textures

• Advantages and disadvantages

The Half Life 2 like


• Tileable textures• Flexible prototyping• Fast production• Less VRAM required• Save triangles

• No mesh combining• Less realistic

The Unreal 3 like


• Unique textures• Flexible prototyping• Slow production• Huge VRAM required• Increase triangles

• Good for batching• More realistic

The Bootcamp like


• Middle ground solution

• Advantages from both sides

Shading


• Reflective/Bumped/Specular• Ambient Cubemap

Realistic Vegetation


• Using the Tree Editor• Observing nature

Fork shape

Less dense leaves

Lighting


• Sunlight and Skylight• It’s all about colors!

Colors and temperature

Lighting Contrast


• Dark vs Bright• Cold vs Warm• Shadow vs Light

Raphael Lopes BaldiAquiris Game [email protected]

Coding

Coding


• Programming language

• Soldier• Enemies• Smart objects

• Streaming and scene loading

• Decal System

Programming language• JavaScript• Widespread in the community• Easier to learn


• Third person shooter• Realistic movements• Very specific camera

behaviour

Soldier Behaviour

Coding

Camera behaviour• Non centered character• Collide with walls• Over the shoulder effect• Highlight weapon when aiming


• Turrets• Training dummies• Easy to place and

setup• Editor tools to setup

range and attack areas

• Why use mechanical enemies instead of real soldiers?

Enemies

Coding

Smart objects• Objects that “know” what must be done

under certain conditions• Barrels• Trash bags• Collectable items


Streaming• Web deployment• Large scenes• User must feel that the game is continuous• Loading free


• Very small loading steps

• “Hiccup” free solution (asynchronous loading)

• Used to compose first cut scene

Additive scenes

Coding

Decal system• Main use: bullet holes• Secondary use: environment enrichment• AAA titles makes extensive use of decals• Unity does not have a built in decal system


• May use built in projectors

• Very “expensive”• Per frame

calculations• Should use specific

shaders to work properly

Decal system

Coding

• References• Eric Lengyel –

Aplying Decals to Arbitrary Surfaces (Game Programming Gems 2, 2001)

• Unreal Engine• Source Engine

Decal system

Coding

• Technical overview• Obtain affected

surface• Space conversion• Mesh clipping• UV generation

Decal system

Coding

• Technical overview• Interpolate any

needed mesh property (color, tangent, normal)

• “Push” vertices to avoid depth fighting

• Combine generated meshes

Decal system

Coding

Occlusion CullingNothing more than meets the eye

How it actually helps?• Objects occluded by others are not rendered• Less Draw Calls• Less CPU overhead• Bigger frame rate

Maurício LongoniAquiris Game [email protected]

Picture text

The Forest Challenge• Open environment• Thin objects• Not too much things to hide after


Picture text

How can we go over that?• Fake!• If it looks right, it is righttm

• Take advantage of so many trees


We can use pretty big objects to hide thing behind dense tree sets.

Simulate Canopy

Occlusion Culling

Picture text

unity bootcamp post mortem

Technology

address coding

address search

address sunlight

address briefing

address detailed cutscenes

address large scale

address environment

address real world scale