readd funny frustum thing (fustum is still borked as fk)

src/main/resources/assets/voxy/shaders/lod/hierarchical/screenspace.glsl

@@ -72,7 +72,7 @@ void setupScreenspace(in UnpackedNode node) {
 
 //Checks if the node is implicitly culled (outside frustum)
 bool outsideFrustum() {
-    return any(lessThanEqual(maxBB, vec3(0.0f))) || any(lessThanEqual(vec3(1.0f), minBB));// maxBB.z > 1 is actually wrong
+    return any(lessThanEqual(maxBB, vec3(0.0f))) || any(lessThanEqual(vec3(1.0f), minBB)) || maxBB.z < 0.5;// maxBB.z > 1 is actually wrong
 
     //|| any(lessThanEqual(minBB, vec3(0.0f, 0.0f, 0.0f))) || any(lessThanEqual(vec3(1.0f, 1.0f, 1.0f), maxBB));
 }