Cel shading

[SimplySerenity]

So I've finally made my account after lurking here for quite sometime. This may be a dumb question but how can I add cell shading to darkplaces? ^.^

[qbism]

Welcome! I've seen some cel-like shading in Nexuiz and Xonotic, which are based on DP.

[SimplySerenity]

Thank you. ^.^ I asked someone who had cell shading in one of their projects how they added it, and they said that it became a feature in one of the newer builds of DP?

[leileilol]

You could simulate celshading in realtime lighting by messing with lighting exponents.

[SimplySerenity]

Are there any tutorials on that?

[SimplySerenity]

Bumping as I really wish I knew how to do this. :3

[r00k]

google glsl/hlsl celshading it will giv eyou at least the math

[toneddu2000]

Hey SimplySerenity! Cel shading in xonotic has been made, IIRC, using glsl like this video shows, but SteelStorm 1 used a very simple ink shader. For what I remember you should insert in NetRadiant in world spawn a key "ink" and then apply to an object the ink shader.

When I come back home tonight I'll post here the complete procedure.

motorsep said that in SteelStorm 2 used direct celshading in DarkPlaces engine but I admit I didn't understand how he achieved that result.
Here the demonstration (look at the motorsep reply at the first comment from above).

cheers

[toneddu2000]

ok I found it.
from Steel Storm shader

Code: Select all

// ink shader for maps
// In folder scripts:
// to use, add "cel" to shaderlist.txt
//IN gtkRadiant or NetRadiant:
// add a "_celshader" key to worldspawn entity with a value of "cel/ink"

create a shader named cel in folder scripts

PS: keep in mind I don't know if Kot-in-action has some copyright on it, so, before use it in your game, first contact them!

Code: Select all

textures/cel/ink
{
   qer_editorimage textures/colors/black.tga
   
   q3map_notjunc
   q3map_bounce 0.0
   q3map_shadeangle 120
   q3map_texturesize 1 1
   q3map_invert
   q3map_offset -5.0
   
   surfaceparm nolightmap
   surfaceparm trans
   surfaceparm nonsolid
   surfaceparm nomarks
   surfaceparm noimpact
   
   dpnoshadow
   
   {
      map textures/colors/black.tga
      rgbGen identity
   }
}




[leileilol]

a q3map2 hack to make outlines on the brushes is outlines, not shading.

[toneddu2000]

yeah, you're right, I was inaccurate. I still wonder if DP has cel shading embedded in the engine, now. Gonna experiment

[toneddu2000]

ok, to enable REAL cel shading in dp

Code: Select all

r_celshading 1

Code: Select all

r_celoutlines 1

Code: Select all

r_shadow_deferred 1

It doensn't seem to "splotch" texture image, but I'll dig it up

[SimplySerenity]

wow thanks for all the help toneddu!

[toneddu2000]

no problem, I learned something new too!

[Ace12GA]

What version of DP does this work with?

EDIT: Never mind, downloaded the latest autobuild, and its there. Wow, does that deferred shadow stuff ever kill my frame rates.