1 files changed, 0 insertions, 105 deletions
diff --git a/advanced_lighting/4.normal_mapping/shaders/shadow.fs b/advanced_lighting/4.normal_mapping/shaders/shadow.fs
deleted file mode 100644
index 6a3a8b0..0000000
--- a/advanced_lighting/4.normal_mapping/shaders/shadow.fs
+++ /dev/null
@@ -1,105 +0,0 @@
-#version 330 core
-
-in VS_OUT {
-    vec3 frag_pos;
-    vec3 normal;
-    vec2 tex_coords;
-} fs_in;
-
-out vec4 frag_color;
-
-uniform vec3 light_pos;
-uniform vec3 view_pos;
-uniform float far;
-
-uniform sampler2D diffuse_texture;
-uniform samplerCube depth_cubemap;
-
-vec3 grid_sampling_disk[20] = vec3[]
-(
-   vec3(1, 1,  1), vec3( 1, -1,  1), vec3(-1, -1,  1), vec3(-1, 1,  1), 
-   vec3(1, 1, -1), vec3( 1, -1, -1), vec3(-1, -1, -1), vec3(-1, 1, -1),
-   vec3(1, 1,  0), vec3( 1, -1,  0), vec3(-1, -1,  0), vec3(-1, 1,  0),
-   vec3(1, 0,  1), vec3(-1,  0,  1), vec3( 1,  0, -1), vec3(-1, 0, -1),
-   vec3(0, 1,  1), vec3( 0, -1,  1), vec3( 0, -1, -1), vec3( 0, 1, -1)
-);
-
-float
-calculate_shadow(vec3 frag_pos)
-{
-    vec3 frag_to_light = frag_pos-light_pos;
-    /* float closest_depth = texture(depth_cubemap, frag_to_light).r; */
-    /* closest_depth *= far; */
-    float current_depth = length(frag_to_light);
-    /* float bias = 0.05; */
-    /* float shadow = current_depth-bias > closest_depth ? 1.0 : 0.0; */
-    /* NOTE(pryazha): Display depth value for debugging */
-    /* frag_color = vec4(vec3(closest_depth/far), 1.0); */
-    /*
-    float shadow = 0.0;
-    float offset = 0.1;
-    float samples = 4.0;
-    for (float x = -offset;
-         x < offset;
-         x += offset/(samples*0.5))
-    {
-        for (float y = -offset;
-             y < offset;
-             y += offset/(samples*0.5))
-        {
-            for (float z = -offset;
-                 z < offset;
-                 z += offset/(samples*0.5))
-            {
-                float closest_depth = texture(depth_cubemap, frag_to_light+vec3(x, y, z)).r;
-                closest_depth *= far;
-                if (current_depth-bias > closest_depth)
-                    shadow += 1.0;
-            }
-        }
-    }
-    shadow /= (samples*samples*samples);
-    */
-
-    float shadow = 0.0;
-    float bias = 0.15;
-    int samples = 20;
-    float view_distance = length(view_pos-frag_pos);
-    float disk_radius = (1.0+(view_distance/far))/25.0;
-    for (int sample = 0;
-         sample < samples;
-         ++sample)
-    {
-        float closest_depth = texture(depth_cubemap, frag_to_light+
-                                      grid_sampling_disk[sample]*disk_radius).r;
-        closest_depth *= far;
-        if (current_depth-bias > closest_depth)
-            shadow += 1.0;
-    }
-    shadow /= float(samples);
-    return(shadow);
-}
-
-void
-main(void)
-{
-    vec3 color = texture(diffuse_texture, fs_in.tex_coords).rgb;
-    vec3 normal = normalize(fs_in.normal);
-    vec3 light_color = vec3(0.5);
-
-    vec3 ambient = 0.5*light_color;
-    
-    vec3 light_dir = normalize(light_pos-fs_in.frag_pos);
-    float diff = max(dot(light_dir, normal), 0.0);
-    vec3 diffuse = diff*light_color;
-
-    vec3 view_dir = normalize(view_pos-fs_in.frag_pos);
-    vec3 halfway_dir = normalize(light_dir+view_dir); 
-    float spec = pow(max(dot(halfway_dir, normal), 0.0), 64.0);
-    vec3 specular = spec*light_color;
-
-    float shadow = calculate_shadow(fs_in.frag_pos);
-    vec3 lighting = (ambient+(1.0-shadow)*(diffuse+specular))*color;
-
-    frag_color = vec4(lighting, 1.0);
-}