+ | Backface culling choosing on quad so euclidian map + portal

shaders/intersect.glsl

@@ -42,10 +42,10 @@ bool intersectPlane(Ray ray, GPUObject obj, out hitInfo hit)
 
 bool intersectQuad(Ray ray, GPUObject obj, out hitInfo hit)
 {
-	vec3 normal = normalize(cross(obj.vertex1, obj.vertex2));
+	vec3 normal = obj.normal;
 	float d = dot(normal, ray.direction);
 
-	if (d == 0.0) return (false);
+	if (d == 0.0 || (obj.radius != 0.0 && d <= 0)) return (false); // double sided or not
 
 	float t = dot(obj.position - ray.origin, normal) / d;
 
@@ -64,6 +64,7 @@ bool intersectQuad(Ray ray, GPUObject obj, out hitInfo hit)
 	hit.t = t;
 	hit.position = p + obj.position;
 	hit.normal = normal * -sign(d);
+	// hit.normal = normal;
 	
 	return (inside);
 }

shaders/trace.glsl

@@ -171,7 +171,7 @@ hitInfo traceRay(Ray ray)
 	hitInfo hitScene;
 	hitInfo hit;
 
-	#if 0
+	#if 1
 	for (int i = 0; i < 10; i++) // portal ray
 	{
 		hitBVH = traverseBVHs(ray);