Work on assignment 4

[opengl.git] / solidfrag.glsl

diff --git a/solidfrag.glsl b/solidfrag.glsl
index f9b91ba4d0f2fb16b7515f808730d0df7f10b4a6..fa00e7aa2e7ed8f0021774fa525665937ab65f5b 100644 (file)
--- a/solidfrag.glsl
+++ b/solidfrag.glsl
@@ -1,6 +1,24 @@
 #version 330
+in vec3 normal;
+in vec3 fragPos;
+uniform vec3 lightPos;
+uniform vec3 viewPos;
+uniform vec4 lightColor;
 uniform vec4 color;
 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);
+
+       vec4 lighting = (ambient + diffuse + specular) * lightColor;
+
+       FragColor = lighting * color;
 }
+