Handle empty child list in traversal shader

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

@@ -28,6 +28,7 @@ struct UnpackedNode {
 };
 
 #define NULL_NODE ((1<<24)-1)
+#define EMPTY_QUEUE_ID ((1<<24)-2)
 #define NULL_MESH ((1<<24)-1)
 #define EMPTY_MESH ((1<<24)-2)
 
@@ -63,6 +64,10 @@ bool hasChildren(in UnpackedNode node) {
     return node.childPtr != NULL_NODE;
 }
 
+bool childListIsEmpty(in UnpackedNode node) {
+    return node.childPtr == EMPTY_QUEUE_ID;
+}
+
 bool isEmpty(in UnpackedNode node) {
     return (node.flags&2u) != 0;
 }

src/main/resources/assets/voxy/shaders/lod/hierarchical/traversal_dev.comp

@@ -51,6 +51,10 @@ void addRequest(inout UnpackedNode node) {
 }
 
 void enqueueChildren(in UnpackedNode node) {
+    if (childListIsEmpty(node)) {//Occures in a very rare case/instance so just handle it gracefully
+        return;
+    }
+
     uint children = getChildCount(node);
     pushNodesInit(children);
     uint ptr = getChildPtr(node);