how would you handle transitions in floor textures like this?

and_im_javert

hey guys,
i'm trying to figure out how to make transitions like in this screenshot
(from The Last of Us: Left Behind)
they control their debris and decay so well! i am frankly clueless as to how to go about this.




im fairly certain A is two seperate meshes, but B and C? i have no clue.
a plane with an alpha texture?
some kind of funky thing i don't know about?
just looking for advice and opinions, thanks.

Lt_Commander

C is likely achieved with vertex painting of some sort + an alpha masked blend texture. I'm not sure what engine TLOU is on, but there's a little bit of documentation on the Source Engine's implementation of the technique here, for reference.

It could have been painted or even ray traced depending on the editor. It could also be manually placed decals. There's always a few ways to skin a cat.

LMP

Between the rules and snow, it could be a layered material with vertex color blending and a "mix map" to help define the crisp transitions... our it could be something else... is need to take a closer look in the actual game.

Eric Chadwick

Some info here.

http://wiki.polycount.com/wiki/MultiTexture#Modulation_Blending

NicolasW

Some other info here

http://www.gamasutra.com/blogs/AndreyMishkinis/20130716/196339/Advanced_Terrain_Texture_Splatting.php