groworld/plant-eyes/shaders/toon.frag.glsl
Dave Griffiths 4c710ab044 shader fix
2009-07-30 16:10:10 +01:00

31 lines
753 B
GLSL

varying vec3 N;
varying vec3 L;
varying vec3 V;
varying vec2 T;
uniform sampler2D BaseMap;
void main()
{
vec3 n = normalize(N);
vec3 l = normalize(L);
vec3 v = normalize(V);
float HighlightSize=0.1;
float ShadowSize=0.2;
float OutlineWidth=0.4;
vec4 MidColour=gl_FrontMaterial.diffuse;
vec4 HighlightColour=MidColour*2.0;
vec4 ShadowColour=MidColour*0.5;
HighlightColour.a=1.0;
ShadowColour.a=1.0;
float lambert = dot(l,n);
vec4 colour = MidColour;
if (lambert > 1.0-HighlightSize) colour = HighlightColour;
if (lambert < ShadowSize) colour = ShadowColour;
if (dot(n,v) < OutlineWidth) colour = vec4(0,0,0,1);
if (dot(n,v) < 0.0) colour = MidColour*texture2D(BaseMap, T);
gl_FragColor = colour;
}