X-Git-Url: https://gitweb.ps.run/subsurface_scattering/blobdiff_plain/7afef4c11451100fa379bba1fe78122428d8d663..9d10826ccb5d1f8a3821d4d2f4242c401146d12d:/shaders/frag.glsl

diff --git a/shaders/frag.glsl b/shaders/frag.glsl
index a92699c..a70915a 100644
--- a/shaders/frag.glsl
+++ b/shaders/frag.glsl
@@ -8,6 +8,7 @@ out vec4 FragColor;
 uniform vec3 objectColor;
 uniform vec3 lightColor;
 uniform vec3 lightPos;
+uniform vec3 viewPos;
 
 void main()
 {
@@ -20,6 +21,12 @@ void main()
   float ambientStrength = 0.1;
   vec3 ambient = ambientStrength * lightColor;
 
-  vec3 result = (ambient + diffuse) * objectColor;
+  float specularStrength = 0.5;
+  vec3 viewDir = normalize(viewPos - FragPos);
+  vec3 reflectDir = reflect(-lightDir, norm);
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), 32);
+  vec3 specular = specularStrength * spec * lightColor;
+
+  vec3 result = (ambient + diffuse + specular) * objectColor;
   FragColor = vec4(result, 1.0f);
-}
\ No newline at end of file
+}