Mirror's Edge Catalyst

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At GDC, EA Dice Senior Lighting Artist Fabien Christin held a presentation showcasing the lighting of Mirror’s Edge: Catalyst, including some really amazing work-in-progress screenshots of environments and characters, that you can see at the bottom of the post.

Here’s a summary of what was mentioned during the presentation:

• Mirror’s Edge: Catalyst has a day/night cycle.
• The game has a strong narration revolving around the history of the City of Glass and the rise of Faith.
• There were four major challenges:
  • Creating a Time of Day system.
  • Can we even make Mirror’s Edge with dynamic lighting?
  • Making beliveable characters for cinematics.
  • Creating stylized images with Physically Based rendering.
• The game’s camera is a physical camera with accurate exposure values: Shutter Speed, Aperture, ISO, and realistic depth of field.
• The team gathered references for the City of Glass in Tokyo.
• The team created a “physically based sky” for the game, with precomputed atmospheric scattering, sun intensity that actually illuminates the sky and realistic sun elevation. Sun and moon can be used at the same time as light sources.
• There are two cloud planes lit by the sky.
• It takes 0.75 ms per frame to render the sky on console. 0.35 ms more than a static sky.
• The team wanted deeper blues than a physically correct sky, so they added a Add Rayleigh Scattering Multiplier, with a more dramatic effect.
• A Mie Scattering multiplier was added to prevent aerial perspective leaking through geometry.
• The day/night cycle lasts 48 minutes. Sunrise is at 6 AM, and sunset is at 6 PM.
• Sun shadows are connected to player movement to hide jittery shadows.
• The game uses a real-time indirect lighting solution by Geomerics that has been used in Frostbite engine since Battlefield 3.
• The city divided in hierarchized zones for streaming.
  • 17 Ground level zones.
  • 83 Buildings zones.
  • 391 Props zones.
• Each streaming has it own Enlighten database including:
  • 1 Lightmap (Atlas up to 2048*2048) for large static objects.
  • Lightprobes (L2 spherical harmonics) for dynamic and small objects.
  • GI data for relighting.
  • Between 5 and 15 MB.
• Around 30 databases are loaded simultaneously.
• Sun bounces are set to 75% intensity.
• Distant reflections use an old style cubemap updated with the time of day. It’s cheap, but not accurate, as there are reflections of the cityscape where there should be none.  This was fixed with a sky visibility mask.
• Local reflections use a Parallax-corrected cubemap that allows moving the capture point. They’re also updated with the time of day.
• Screen space reflections raytrace reflections of what is visible on screen using the depth buffer.
• A lot of work has gone into getting the right white for the game.
• Local lighting is physically based. Tiled Deferred Lighting is used.
• There are up to eight lights cast shadows simultaneously.
• Post-production effects were used to stylize the image.
• Characters were created with face scanning, but they were modified because characters are stylized.
• Subsurface scattering creates realistic skin.
• Eyes have their own shader with parallax for refraction and normal map for iris concavity.
• Hair uses an anisotropic hair shader.
• Cinematics use a lot of lights, for instance one scene uses 472 light sources.

 

30 min gameplay

atrodo laisves nekazka padaugejo. kaip ir pries tai mes tau parodysim kelia raudonai ir tu juo begsi ir spausi tai ka reikia reikiamu metu.

MINIMUM:

• OS: Windows® 7 64-Bit (use the latest Service Pack)
• CPU: Intel i3-3250 / AMD FX-6350. (Note: Mirror’s Edge Catalyst requires at least 4 logical cores to run.)
• RAM: 6 GB
• HARD DRIVE: At least 25 GB of free space
• VIDEO: NVIDIA GeForce® GTX 650 Ti 2GB or better / AMD Radeon™ R9 270x or better
• INPUT: Keyboard and mouse, dual analog controller

RECOMMENDED:

• OS: Windows® 10 64-Bit (use the latest Service Pack)
• CPU: Intel Core i7-3770 at 3.4 GHz / AMD FX-8350 at 4.0 GHz
• RAM: 16 GB
• HARD DRIVE: At least 25 GB of free space
• VIDEO: NVIDIA GeForce® GTX 970 4GB or better / AMD Radeon™ R9 280x 3GB or better
• INPUT: Keyboard and mouse, dual analog controller

 

begt kur nori ? tai begt gali ne ten kur tau rodo tas kelias raudonas ?  butu gerai jei tai tiesa.bet kaip tada apskaiciuot atstumus kuriuos gali persokt ir kuriu ne ir kur gali atsispirt o kur negali. kitaip krisi zemyn po kiekvieno naujo laisves pojucio 

closed beta

atrodo laisves pakankamai tik jei laikas neitu ir nebutu keliu pro kuriuos turi praeit butinai.

turetu but ilgesnis , kazkuriam cia video matesi kai begi per stoga kiti NPC buvo kurie tau siule darba. tipo kazka kazkur nunest ar paimt . tai su tais side questais turetu pailget. tik kad jie butu idomesni nei nubegt ten per laika, nes kazka daryt per laika tai pats lieviausias dalykas zaidimuose.