diff --git a/js/app.mjs b/js/app.mjs
index 29fab70..5c8586d 100644
--- a/js/app.mjs
+++ b/js/app.mjs
@@ -1,6 +1,10 @@
+import { testCullingFrustrum } from "./renderer/culling-frustrum.mjs";
 import startHelloWebGL from "./renderer/renderer.mjs";
 import { mat4 } from "./util/glMatrix_util.mjs";
 
 window.addEventListener("load", (_) => {
+
+    testCullingFrustrum();
+
     startHelloWebGL();
 });
\ No newline at end of file
diff --git a/js/renderer/culling-frustrum.mjs b/js/renderer/culling-frustrum.mjs
index f5afe0f..c30a4f6 100644
--- a/js/renderer/culling-frustrum.mjs
+++ b/js/renderer/culling-frustrum.mjs
@@ -38,11 +38,13 @@ export function testCullingFrustrum() {
     var cam = new Camera(0.1, 5, 45, 16.0 / 9.0);
     var maze = generateMaze(20, 20, 0.1);
     maze.print();
-    cam.setRotation([0.0, 60.0, 0.0]);
-    // cam.setPosition([5.0, 0.0, 5.0]);
-    cam.setPosition(maze.startPosition);
+    // cam.setRotation([0.0, 60.0, 0.0]);
+    cam.setPosition([5.0, 0.0, 5.0]);
+    // cam.setPosition(maze.startPosition);
     var cullFrus = new CullingFrustrum(cam);
 
+    cam.getFrustrumPlanes().forEach(x => x.printEquation());
+
     var layout = maze.getArrayLayout();
     
     function layoutToCoord(x, z) {
diff --git a/js/renderer/renderer.mjs b/js/renderer/renderer.mjs
index 23efd00..b4c763d 100644
--- a/js/renderer/renderer.mjs
+++ b/js/renderer/renderer.mjs
@@ -228,8 +228,6 @@ function drawScene() {
 
     testCubeMaterial.camera.setRotation([xRot, yRot, 0.0]);
 
-    console.log(testCubeMaterial.camera.up.map(x => x.toFixed(2)));
-
     var f = (keys['w'] ? 1.0 : 0.0) + (keys['s'] ? -1.0 : 0.0);
     var r = (keys['a'] ? 1.0 : 0.0) + (keys['d'] ? -1.0 : 0.0);
     cameraPosition = addVector(cameraPosition, multVector(testCubeMaterial.camera.forward, f * 0.2));
@@ -237,6 +235,17 @@ function drawScene() {
 
     testCubeMaterial.camera.setPosition(cameraPosition);
 
+    batchMesh.geometry.batchInstances = mazeWalls.filter(x => {
+        const mat = mat4.create(testCubeMaterial.mvMatrix);
+        const pos = new Float32Array(3);
+        pos[0] = x.position[0];
+        pos[1] = x.position[1];
+        pos[2] = x.position[2];
+        const matRes = mat4.create();
+        const instancePos = mat4.multiplyVec3(mat, pos, matRes);
+        return cullingFrustrum.testBoundingSphere(instancePos, Math.sqrt(3));
+    });
+
     setCameraPositionUI(testCubeMaterial.camera.position);
     batchMesh.draw(gl);
 }