diff --git a/res/shaders/lib/AABB.slang b/res/shaders/lib/Bounding.slang
similarity index 70%
rename from res/shaders/lib/AABB.slang
rename to res/shaders/lib/Bounding.slang
index 0567ef1..4ec90b7 100644
--- a/res/shaders/lib/AABB.slang
+++ b/res/shaders/lib/Bounding.slang
@@ -1,5 +1,30 @@
 import Common;
 
+struct BoundingSphere
+{
+    float4 centerRadius;
+    float3 getCenter()
+    {
+        return centerRadius.xyz;
+    }
+    float getRadius()
+    {
+        return centerRadius.w;
+    }
+    bool pointInside(float3 p)
+    {
+        if(abs(getCenter() - p) > getRadius())
+        {
+            return false;
+        }
+        return true;
+    }
+    bool insideFrustum(float4x4 transform, Frustum frustum)
+    {
+        
+    }
+};
+
 struct AABB
 {
 	float3 min;
diff --git a/res/shaders/lib/Scene.slang b/res/shaders/lib/Scene.slang
index 6a8dc5a..82cd316 100644
--- a/res/shaders/lib/Scene.slang
+++ b/res/shaders/lib/Scene.slang
@@ -1,8 +1,8 @@
-import AABB;
+import Bounding;
 
 struct MeshletDescription
 {
-	AABB boundingBox;
+	BoundingSphere bounding;
 	uint32_t vertexCount;
 	uint32_t primitiveCount;
 	uint32_t vertexOffset;
@@ -13,7 +13,7 @@ struct MeshletDescription
 
 struct MeshData
 {
-	AABB boundingBox;
+	BoundingSphere bounding;
     uint32_t numMeshlets;
     uint32_t meshletOffset;
     uint32_t firstIndex;