LUMA / PUPIL This is a simple 513kb lightweight software that grabs the vrchat window current brightness and applies it to your avatar pupil size Vrcfacetracking parameters. Works alongside Vrcfacetracking, no need to modify or change any of your favorite modules! Windows 11 and 10 supported. FIRST-TIME SETUP 1. Start VRChat and enable OSC in its menu. 2. Close VRCFaceTracking completely. If you have never used it, run it once first. 3. Open LumaPupil.exe. Select Connection > Connect VRCFT. 4. Start VRCFaceTracking again with your usual headset module. 5. Click Enable light response in Luma Pupil. WHILE PLAYING Keep Luma Pupil running and the VRChat window open, not minimized. Pupil parameters are detected automatically. Check the Avatar status if your pupils do not respond. Adjust the sliders to change the feel. TO STOP USING LUMA PUPIL Close VRCFaceTracking. In Luma Pupil, select Connection > Restore VRCFT. You can then close Luma Pupil and restart VRCFaceTracking normally.