materials, brick and nodes structure, preparing for world generation

src/shaders/shading.cginc

@@ -0,0 +1,19 @@
+/*
+    point: Hit point
+    view: View vector (camera ray)
+    normal: Normal vector
+*/
+vec3 solve(vec3 hitPoint, vec3 view, vec3 normal, uint brick)
+{
+    // Lighting
+    vec3 light_color = vec3(1.0, 1.0, 1.0);
+    vec3 light_dir = normalize(hitPoint-vec3(0.0, 1.5, 4.0));
+
+    vec3 ambient = light_color * 0.1;
+    vec3 diffuse = light_color * max(1.0-dot(normal, light_dir), 0.0);
+    vec3 specular = light_color * pow(max(dot(view, reflect(-light_dir, normal)), 0.0), 32);
+
+    // Combine colors
+    vec3 object_color = _Materials[brick].albedo.rgb;//vec3(0.0, 0.1, 0.5);
+    return (ambient + diffuse + specular) * object_color;
+}