1 files changed, 0 insertions, 114 deletions
diff --git a/cel.fs b/cel.fs
deleted file mode 100644
index a784a7e..0000000
--- a/cel.fs
+++ /dev/null
@@ -1,114 +0,0 @@
-#version 330 core
-
-/* input from the vector shader */
-in vec3 in_normal;
-in vec2 in_texture_coordinate;
-in vec3 in_fragment_position;
-
-/* light uniforms */
-uniform vec3 ambient_color;
-
-struct point_light {
-  vec3 position; /* in view space */
-
-  float constant;
-  float linear;
-  float quadratic;
-
-  vec3 color;
-};
-
-struct directional_light {
-  vec3 direction; /* in view space */
-  vec3 color;
-};
-
-#define MAX_POINT_LIGHTS 8
-#define MAX_DIRECTIONAL_LIGHTS 8
-
-uniform point_light point_lights[MAX_POINT_LIGHTS];
-uniform int n_point_lights;
-
-uniform directional_light directional_lights[MAX_DIRECTIONAL_LIGHTS];
-uniform int n_directional_lights;
-
-/* texture uniforms */
-uniform sampler2D tex;
-
-/* view matrix */
-uniform mat4 view;
-
-out vec4 fragment_color;
-
-/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
-
-/* compute phong cel-shader intensity */
-float compute_light_intensity(vec3 normal, vec3 light_direction, vec3 view_direction) {
-  /* diffuse light */
-  float diffuse_intensity = max(dot(normal, light_direction), 0);
-  diffuse_intensity = smoothstep(0, 0.01, diffuse_intensity);
-
-  /* specular highlight */
-  vec3 reflection_direction = reflect(-light_direction, normal);
-  float specular_intensity = pow(max(dot(view_direction, reflection_direction), 0), 256);
-  specular_intensity = smoothstep(0.005, 0.01, specular_intensity);
-
-  return diffuse_intensity;// + specular_intensity;
-}
-
-/* compute directional light contribution */
-vec3 compute_directional_light(directional_light light, vec3 normal, vec3 view_direction) {
-  vec3 light_direction = -vec3(view * vec4(light.direction.xyz, 0.0));
-  return light.color * compute_light_intensity(normal, light_direction, view_direction);
-}
-
-/* compute point light contribution */
-vec3 compute_point_light(point_light light, vec3 normal, vec3 fragment_position, vec3 view_direction) {
-  vec3 light_position = vec3(view * vec4(light.position.xyz, 1.0));
-  vec3 light_direction = normalize(light_position - fragment_position);
-
-  float light_intensity = compute_light_intensity(normal, light_direction, view_direction);
-
-  /* attenuation */
-  float distance = length(light_position - fragment_position);
-  float attenuation = 1.0 / (light.constant +
-                             light.linear * distance +
-                             light.quadratic * distance * distance);
-
-  return attenuation * light.color * light_intensity;
-}
-
-void main()
-{
-  vec3 normal = normalize(in_normal);
-  vec3 view_direction = normalize(-in_fragment_position);
-  
-  vec3 point_light_contrib = vec3(0, 0, 0);
-  for (int i=0; i<n_point_lights; i++) {
-    point_light_contrib += compute_point_light(point_lights[i],
-                                               normal,
-                                               in_fragment_position,
-                                               view_direction);
-  }
-
-  vec3 directional_light_contrib = vec3(0,0,0);
-  for (int i=0; i<n_directional_lights; i++) {
-    directional_light_contrib += compute_directional_light(directional_lights[i],
-                                                           normal,
-                                                           view_direction);
-  }
-  
-  /* rim lighting */
-  float rim_amount = 0.716;
-  float rim_threshold = 0.5;
-  float rim_norm = 1 - dot(normal, view_direction);
-  float rim_intensity = rim_norm;
-  if (point_light_contrib == vec3(0,0,0) && directional_light_contrib == vec3(0,0,0)) {
-    rim_intensity = 0;
-  }
-  rim_intensity = smoothstep(rim_amount - 0.01, rim_amount + 0.01, rim_intensity);
-  vec3 rim_light = rim_intensity * ambient_color;
-
-  vec4 total_light = vec4((ambient_color + point_light_contrib + directional_light_contrib).xyz, 1.0);
-  fragment_color = total_light * texture(tex, in_texture_coordinate); 
-}