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TheLastOfUs

Member Since 31 Oct 2013
Offline Last Active Feb 09 2014 09:11 PM

Posts I've Made

In Topic: Assassin's Creed IV: Black Flag Ocean Technology Talk

08 February 2014 - 10:41 PM

Thank you everyone.

 

All the answers are here. I feel this topic has reached the end of its thread.

 

Servant, everyone else - thank you so much.

 

I truly and humbly appreciate the time you all have taken to write in detail to me about this. It has not gone unnoticed.


In Topic: Assassin's Creed IV: Black Flag Ocean Technology Talk

08 February 2014 - 12:26 AM

 

I cant say for sure but they probably used some LOD system similar to the ones used in terrain rendering where the ocean is divided in patches with different LODs based on distance from camera, etc.

Though if it's procedural, they can generate the ocean mesh chunk by chunk during runtime, and discard the mesh when out-of-view. Certain procedural algorithms can, given a state, generate a low-res mesh, and then procedurally generate more and more detailed versions (higher LOD) of that same mesh when needed.

 

 

Thank you! I managed to get the following from a dev on twitter:

 

He says the ocean is 1 mesh on a plane - which is procedural and done by a pixel shader (runtime-generated). I think you hit the nail on the head. He also says they used LOD's between shallow/deep water oceans and further waves are lesser detailed but detail only as the boat gets closer to the water.

 

Procedural seems to be some kind of code that "Streams" or processes graphics differently, am I right Servant? Not understanding how that exactly works when an ocean is 1 plane and generated "procedurally"


In Topic: Assassin's Creed IV: Black Flag Ocean Technology Talk

06 February 2014 - 12:25 AM

Thank you so much for your help Promit - found it. Seems like its subsurface scattering phenomena using a ramp gradient.

 

Last question - was the ocean one big mesh or was it individual planes i wonder?


In Topic: Assassin's Creed IV: Black Flag Ocean Technology Talk

05 February 2014 - 09:24 PM

Thank you for your help.

 

The #1 question I wish someone would answer is simply - when I see waves go up in the game - there is this turquoise color in the upwell of the wave / peak - basically like a gradient. Wondering how they accomplished that.

 

Similar to this picture

 

assassins-creed-iv-black-flag-general-sc


In Topic: Assassin's Creed IV: Black Flag Ocean Technology Talk

05 February 2014 - 02:01 PM

That ocean does not have many rogue waves....not very realistic to me at all. Black Flag seems more realistic.


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