X-Git-Url: https://git.lukelau.me/?p=opengl.git;a=blobdiff_plain;f=fragment.glsl;fp=fragment.glsl;h=e41a7f929083f43ba0ee3653e1cf37946eb9daf2;hp=edc4f63358b73b6d46799ab01e18f31ffbca038b;hb=526f5c3dc0302e541c95ed2198ce8fdb5cdd0b99;hpb=f26de7de42a3d0a52365de79f528fcea808e2bca

diff --git a/fragment.glsl b/fragment.glsl
index edc4f63..e41a7f9 100644
--- a/fragment.glsl
+++ b/fragment.glsl
@@ -1,7 +1,20 @@
 #version 330
 in vec4 color;
+in vec3 normal;
+in vec3 fragPos;
+uniform vec3 lightPos;
+uniform vec3 viewPos;
 out vec4 FragColor;
 
 void main() {
-	FragColor = color;
+	float ambient = 0.1;
+	float specularStrength = 0.5;
+	vec3 lightDir = normalize(fragPos - lightPos);
+	float diffuse = max(0, dot(normal, lightDir));
+
+	vec3 viewDir = normalize(fragPos - viewPos);
+	vec3 reflectDir = reflect(-lightDir, normal);
+	float specular = pow(max(0, dot(viewDir, reflectDir)), 128);
+
+	FragColor = (ambient + diffuse + specular) * color;
 }