59 lines
1.4 KiB
Text
59 lines
1.4 KiB
Text
|
uniform int nr_lights;
|
||
|
|
|
||
|
|
varying vec3 q_tilde;
|
||
|
|
varying vec3 inv_T_square_v;
|
||
|
|
varying vec3 inv_T_square_e_c;
|
||
|
|
varying vec4 ev_clip;
|
||
|
|
varying vec3 v;
|
||
|
|
varying vec4 a;
|
||
|
|
varying vec4 s;
|
||
|
|
|
||
|
|
void main()
|
||
|
|
{
|
||
|
|
float q_tilde_squared_length = dot(q_tilde.xy,q_tilde.xy);
|
||
|
|
if (q_tilde_squared_length > 1.0)
|
||
|
|
discard;
|
||
|
|
float lambda = 1.0/(1.0+q_tilde.z*sqrt(1.0-q_tilde_squared_length));
|
||
|
|
vec3 n = inv_T_square_e_c + lambda * inv_T_square_v;
|
||
|
|
|
||
|
|
gl_FragColor = a;
|
||
|
|
vec3 l;
|
||
|
|
vec4 specular;
|
||
|
|
vec4 diffuse;
|
||
|
|
vec4 result_color = vec4(0);
|
||
|
|
|
||
|
|
for (int i=0; i<nr_lights; ++i) {
|
||
|
|
|
||
|
|
if (i==0) {
|
||
|
|
l=normalize(gl_LightSource[0].position.xyz);
|
||
|
|
specular=gl_LightSource[0].specular;
|
||
|
|
diffuse=gl_LightSource[0].diffuse;
|
||
|
|
}
|
||
|
|
if (i==1) {
|
||
|
|
l=normalize(gl_LightSource[1].position.xyz);
|
||
|
|
specular=gl_LightSource[1].specular;
|
||
|
|
diffuse=gl_LightSource[1].diffuse;
|
||
|
|
}
|
||
|
|
if (i==2) {
|
||
|
|
l=normalize(gl_LightSource[2].position.xyz);
|
||
|
|
specular=gl_LightSource[2].specular;
|
||
|
|
diffuse=gl_LightSource[2].diffuse;
|
||
|
|
}
|
||
|
|
if (i==3) {
|
||
|
|
l=normalize(gl_LightSource[3].position.xyz);
|
||
|
|
specular=gl_LightSource[3].specular;
|
||
|
|
diffuse=gl_LightSource[3].diffuse;
|
||
|
|
}
|
||
|
|
|
||
|
|
vec3 h=normalize(v+l);
|
||
|
|
|
||
|
|
float ldotn = dot(n,l);
|
||
|
|
if (ldotn > 0.0) {
|
||
|
|
result_color +=
|
||
|
|
ldotn*diffuse*gl_Color+
|
||
|
|
pow(max(dot(n,h), 0.0), gl_FrontMaterial.shininess)*s*specular;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
gl_FragColor = result_color;
|
||
|
|
}
|