shiny.fsh

   1 // Based on Point Light shader from oZone3D.Net \r
   2 // http://www.ozone3d.net/tutorials/glsl_lighting_phong_p2.php\r
   3 \r
   4 varying vec3 normal, light_direction, eye_position;\r
   5 varying float attenuation;\r
   6 \r
   7 void main(void)\r
   8 {\r
   9   vec4 final_color = \r
  10     (gl_FrontLightModelProduct.sceneColor * gl_FrontMaterial.ambient) + \r
  11         (gl_LightSource[0].ambient * gl_FrontMaterial.ambient)*attenuation;\r
  12                                                         \r
  13   vec3 N = normalize(normal);\r
  14   vec3 L = normalize(light_direction);\r
  15         \r
  16   float lambert_term = dot(N,L);\r
  17         \r
  18   if(lambert_term > 0.0)\r
  19         {\r
  20       final_color += gl_LightSource[0].diffuse * \r
  21                      gl_FrontMaterial.diffuse * lambert_term * attenuation;     \r
  22                 \r
  23       vec3 E = normalize(eye_position);\r
  24       vec3 R = reflect(-L, N);\r
  25                 \r
  26       float specular = pow(max(dot(R, E), 0.0), gl_FrontMaterial.shininess);\r
  27                 \r
  28       final_color += gl_LightSource[0].specular * gl_FrontMaterial.specular * \r
  29                      specular * attenuation;    \r
  30         }\r
  31 \r
  32         gl_FragColor = final_color;                     \r
  33 }\r