Toon / Cel Shader Example

[time-killer-games]

Toon / Cel Shader Example

Works in ENIGMA and GameMaker:Studio, and probably other
programs that have use the same shaders system. It's GLSL.

I belive this shader looks a little more interesting in use when
compared to the toon shader Robert included in his 1 million
cubes demo. I took me several hours to find this so please
enjoy. I got it from here.

Vertex:

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varying vec3 normal, lightDir;
varying vec2 texCoord;

void main()
{
vec4 ecPos;
ecPos = vec4(gl_ModelViewMatrix * gl_Vertex);
lightDir = normalize(vec3(gl_LightSource[0].position) - ecPos.xyz);
normal = normalize(gl_NormalMatrix * gl_Normal);

texCoord = vec2(gl_MultiTexCoord0);
gl_Position = ftransform();
}
The Fragment:

Code: [Select]

varying vec3 normal, lightDir;
varying vec2 texCoord;
uniform sampler2D texture;

void main()
{
float intensity;
vec3 n;
vec4 _color;

n = normalize(normal);
intensity = dot(lightDir, n);

if (intensity > 0.98)
_color = vec4(1.0,1.0,1.0,1.0);
else if (intensity > 0.5)
_color = vec4(0.8,0.8,0.8,1.0);
else if (intensity > 0.35)
_color = vec4(0.4,0.4,0.4,1.0);
else
_color = vec4(0.0,0.0,0.0,1.0);
gl_FragColor = _color * texture2D(texture, texCoord);
}
You can use it with rendering your
entire 3D scene like this:

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//this should be in your camera object
shader_set(shr_toon);
d3d_set_projection_ext(...);
//Notice I didn't use shader_reset();, and in this case, you shouldn't either.
Or you can is it only with specific
models individually like so:

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//This should only be used in the objects whose models you actually want to apply the effect to.
shader_set(shr_toon);
//Do all your translating, scaling, and rotating here.
d3d_model_draw(...);
shader_reset(); //In this case you should use shader_reset(); because you don't the entire scene to render this way.

I can't post the screens right now but I'll edit this
post when I capture something that actually looks presentable.
Cheers!

[Goombert]

I had to rip a bunch of stuff out of mine to get it to work a couple of months ago because I didn't know GLSL. Also, I am wanting to get a forum board for shader created, for now I have my topic at the top of this subforum, maybe you could post this there instead?

[TheExDeus]

When I replaced the toon one in perftester with this one, I didn't get anything. So maybe post an example as well.