lighting and imgui

cube.frag

@@ -0,0 +1,23 @@
+#version 330 core
+out vec4 FragColor;
+
+uniform vec3 objectColor;
+uniform vec3 lightColor;
+uniform vec3 lightPos;
+
+in vec3 FragPos;
+in vec3 Normal;
+
+void main()
+{
+	float ambientStrength = 0.1f;
+	vec3 ambient = ambientStrength * lightColor;
+
+	vec3 norm = normalize(Normal);
+	vec3 lightDir = normalize(lightPos - FragPos);
+	float diff = max(dot(norm, lightDir), 0.0);
+	vec3 diffuse = diff * lightColor;
+
+	vec3 result = (ambient + diffuse) * objectColor;
+	FragColor = vec4(result, 1.0f);
+}