Added model loading

examples/model/shaders/fragmentShader.frag

@@ -1,8 +1,46 @@
 #version 330 core
+struct Material
+{
+	sampler2D tex_diffuse1;
+	sampler2D tex_specular1;
+};
 
-vec4 out FragColor;
+struct SpotLight
+{
+	vec3 position, direction;
+	float angle, outerAngle;
+	float constant, linear, quadratic;
+};
+
+in vec3 oNormal;
+in vec2 oUV;
+in vec3 oFragPos;
+
+out vec4 FragColor;
+
+uniform Material material;
+uniform SpotLight flashlight;
 
 void main()
 {
-	FragColor = vec4(0.0);
+	vec3 lightDir = normalize(flashlight.position - oFragPos);
+
+	float theta = dot(lightDir, normalize(-flashlight.direction));
+	float epsilon = flashlight.angle - flashlight.outerAngle;
+	float intensity = clamp((theta - flashlight.outerAngle) / epsilon, 0.0, 1.0);
+
+	float diff = max(dot(oNormal, lightDir), 0.0);
+
+	vec3 reflectDir = reflect(-lightDir, oNormal);
+	float spec = pow(max(dot(lightDir, reflectDir), 0.0), 32.0);
+
+	float dist = length(flashlight.position - oFragPos);
+	float attenuation = 1.0 / (flashlight.constant + flashlight.linear * dist + flashlight.quadratic * dist * dist);
+
+	vec3 diffuse = vec3(1.0) * diff * vec3(texture(material.tex_diffuse1, oUV));
+	vec3 specular = vec3(1.0) * spec * vec3(texture(material.tex_specular1, oUV));
+	vec3 ambient = vec3(0.1) * vec3(texture(material.tex_diffuse1, oUV));
+
+	FragColor = vec4(ambient + (diffuse + specular) * intensity * attenuation, 1.0);
+	// FragColor = vec4(vec3(texture(material.tex_diffuse1, oUV)), 1.0);
 }