Fog & Light like in Rayman Legends?

noizz

There are a few videos showcasing Ubi Art framework that powers latest Rayman Legends game and they're like a goldmine of 2D awesomeness, however - 2 things grabbed my attention the most and I was wondering whether they are possible to replicate (or fake a bit) in the Starling world.

Distance Fog (or dynamic? fog) - video segment starts around 9:50

rayman legends ubi art fog

I assume I can fake Z axis with scale and get away with it on the basic level, but the colors part is a bummer - I can either tint sprites with vertex colors or fake the fog with a semi transparent quad in front of a whole layer, but neither seems appropriate. Is there a proper way to fake fog and distance, especially with some DOF/blur in it?

Selective level lighting that affects only elements on specific layer - starts around 10:50

rayman legends ubi art fog

Any idea about this?

I'd appreciate any ideas on the above. Also - feel free to watch the whole video, their engine and the workflow is outstanding.

edit: sorry for the poor gif quality :/

Hajimeku

Very interested what daniel has to say about this. i know i can do this in unity with Shaders. In unity you have sort of layerd render pipelines and you can specify where you want your shader to be processed. for example: Before geometry or after.

tsangwailam

I think is should be done with a custom shader filter.

sHTiF

Indeed this is very easy to do with shaders, couple of minutes work max. For the first one you will need depth texture if you want to have fog correctly per pixel and for the second one a texture defining how each pixel reacts to light.

noizz

So shaders = starling filters? I found an earlier topic and Colin Northway's tutorial - both seem great, but if anyone's has any other suggestions - please share.

Thank you!

Mistakenness

I think they made a fog layer... it's a 3d engine with a 2d camera... so the artwork is affected like photoshop layer does.

sHTiF

Mistakenness in that case there are probably more fog layers since the fog increases in intensity as they move the sprite further back. But yea they don't seem to have per pixel depth based fog.