[Bug] - N8AO works incorrectly with adaptiveDpr

Hey everyone! I seems found a bug in N8AO related to AdaptiveDpr

We found a strange effect in our application after adding N8AO to EffectComposer - sometimes it started to add weird 'reflections' to the materials, and we couldn't understand where it's coming from

This is how it looks like: On the surface of the model you can see "reflection" from grid, which should't be present (but it's not only about grid but any objects can appear as reflection).

After debugging for a while I've noticed that this happens on my machine when DPR value is changed. If we (or system) change dpr from 2 to 1, N8AO started to add this 'reflections'. As I can see class has size values which are half of the initial renderer size (if I understand correctly)

If I manually call setSize(width, height) method on N8AOPostPass instance and upscale this values back to dpr=2 values this bug disappears. So it's either should always keep initial values or there is some error in calculation after updating render size

Steps to reproduce
Lest say screen size is 1000x500 with dpr=2. initial values of renderer is 2000x1000px, dpr=2, we set dpr to 1, values are updated to 1000x500, bug appears. If I set values manually by calling setSize() on N8AOPostPass instance to setSize(2x1000, 2x500) it starts working correctly again

versions

"@react-three/drei": "^9.97.5",
"@react-three/fiber": "^8.15.16",
"@react-three/postprocessing": "^2.16.2",
"postprocessing": "^6.35.3",
"three": "^0.161.0",

Can anyone help with this? I can help with fix if you can explain a bit more of how it works. Thanks in advance

issue に記載された N8AOPostPass の動作から始め、記載されている react-postprocessing と three のセットアップで renderer の DPR を 2 から 1 に変更してケースを再現します。そのサイズ値がどのように更新されるかを追跡します。完了の条件は、DPR の遷移後に adaptiveDpr が余計な反射を生成しなくなることです。