Cell Shading/Toon Shading on the DS

OrganizedChaos

Alright, I've got a quandary.
I'm trying to make a working toon shader for the Nintendo DS. I've seen this done in an existing game (GTA: Chinatown Wars) so I know it IS possible! I'm just not sure how.

If anyone has any kind of input, it would be very much appreciated!

Edit: I figure I should mention I'm looking more for the effect seen in chinatown wars as opposed to zelda or tony hawk, where it's all cell shaded

kio

my guess is - they use the standard edge marking feature and maybe a toon shading ramp - both are by default supported by the DS...

OrganizedChaos

kio wrote: »

my guess is - they use the standard edge marking feature and maybe a toon shading ramp - both are by default supported by the DS...

Unfortunatly, we can't do edge marking becuase the code that we put in for alpha sorting negates that.

kodde

Polygon facing ratio dependent ramp? Although this method works better with high polygon count, which makes me skeptical.