MCDV/lit.fs

   1 #version 330 core
   2 out vec4 FragColor;
   3
   4 struct DirLight {
   5         vec3 direction;
   6
   7         vec3 ambient;
   8         vec3 diffuse;
   9 };
  10
  11 in vec3 FragPos;
  12 in vec3 Normal;
  13
  14 uniform vec3 viewPos;
  15
  16 //Lights
  17 uniform DirLight directional;
  18 uniform vec3 color;
  19
  20 //Prototypes
  21 vec3 CalcDirLight(DirLight light, vec3 normal, vec3 viewDir);
  22
  23 void main()
  24 {
  25         vec3 viewDir = normalize(viewPos - FragPos);
  26
  27         FragColor = vec4(CalcDirLight(directional, Normal, viewDir) * color, 1.0);
  28 }
  29
  30 vec3 CalcDirLight(DirLight light, vec3 normal, vec3 viewDir)
  31 {
  32         //Ambient value
  33         vec3 ambient = light.ambient;
  34
  35         vec3 norm = normalize(normal);
  36
  37         //diffuse
  38         vec3 lightDir = normalize(-light.direction);
  39         float diff = max(dot(norm, lightDir), 0.0);
  40         vec3 diffuse = light.diffuse * diff;
  41
  42         return (ambient + diffuse);
  43 }