sortWork.js crashed when 'dynamicScene': true, with add-->remove-->add opterations. 'dynamicScene': false。 all be OK

[nmgyaoyuan]

when i want read splat file and want rotate the splat scene, i found the bug(maybe).

code:
gsViewer = new GaussianSplats3D.Viewer({
'selfDrivenMode': false,
'useBuiltInControls': false,
'dynamicScene': true,
'renderer':renderer,
'camera':camera,
'threeScene':scene,
'sphericalHarmonicsDegree': 2,
'rootElement': splatContainer.value
});
//--------------------------------------------------------------

/* ----copyed from demo code---*/
function runViewer(splatBufferData:ArrayBuffer, format:GaussianSplats3D.SceneFormat,
alphaRemovalThreshold:number, sphericalHarmonicsDegree:number) {
const splatBufferOptions = {
'splatAlphaRemovalThreshold': alphaRemovalThreshold
};
const splatBufferPromise = fileBufferToSplatBuffer({data: splatBufferData}, format, alphaRemovalThreshold, 0,
undefined, undefined, undefined, undefined, sphericalHarmonicsDegree
);

splatBufferPromise.then((splatBuffer:GaussianSplats3D.splatBuffer) => {
    gsViewer.addSplatBuffers([splatBuffer], [splatBufferOptions])
    .then(() => {
        hasSplatInViewer=true;
        console.info('splat is added in viewer');
        emit('added',null);
    });
});

}
//---------------------------------------------------------------------

use runViewer() to add splatFile , is OK. Then use removeSplatScene(0) remove a scene,is OK. and use runViewer() to add splat File again , crashed.

error info:

Uncaught RangeError: offset is out of bounds
at Int32Array.set ()
at self.onmessage (8f7e31cd-0625-419e-9f13-6931e81b4dc9:95:11)
self.onmessage @ 8f7e31cd-0625-419e-9f13-6931e81b4dc9:95
8f7e31cd-0625-419e-9f13-6931e81b4dc9:48 Uncaught RangeError: offset is out of bounds
at Float32Array.set ()
at sort (8f7e31cd-0625-419e-9f13-6931e81b4dc9:48:59)
at self.onmessage (8f7e31cd-0625-419e-9f13-6931e81b4dc9:123:7)

crashed code (2 places) :
(1) ----> new Float32Array(wasmMemory, modelViewProjOffset, 16).set(modelViewProj);
(2) ---->
if (e.data.centers) {
centers = e.data.centers;
sceneIndexes = e.data.sceneIndexes;
if (integerBasedSort) {
new Int32Array(
wasmMemory,
centersOffset + e.data.range.from * Constants2.BytesPerInt * 4,
e.data.range.count * 4
).set(new Int32Array(centers));
} else {

[mkkellogg]

Sorry for the late reply, are you making sure to wait for removeSplatScene() to complete before attempting to add another scene? It returns a promise like addSplatBuffers()

[nmgyaoyuan]

yes, waited for the removeSplatScene() returned promise before attempting to add another scene.

`if(gsViewer){

  gsViewer.removeSplatScene(0)
  .then(()=>{
      hasSplatInViewer=false;
      console.info('splat is removed');
      emit('deleted',null);
  })
  .catch((error:Error)=>{
      console.error(`splat remove error:${error}`);
  })

}`

crashed throw from sortWork.js 。

[mkkellogg]

If you post your full code, maybe I can run it locally and try to debug it.

[Nyveon]

@nmgyaoyuan does the latest 0.4.6 release fix your issue? I ask because my issue #380 was very similar to yours, and this latest release fixed it.