phi16
Summary:
  • When using FHD full screen mode and FHD camera settings, and viewing the mirror, taking a picture results in strange artifacts appearing only in the saved picture.
  • This issue may be resolved by completely clearing the RenderTexture that is used internally in the camera.
Steps to Reproduce:
  1. Go to the "The Avatar Studio ｜ Avatown" world. (https://vrchat.com/home/world/wrld_96460268-8c89-438f-b8f2-2ea2f1ed1ce7) (Desktop or VR)
  2. Set the VRChat application to full screen. (1920x1080)
  3. Set the handheld camera as FHD mode.
  4. Stand facing the mirror and make sure the mirror frame is in your view.
  5. Take a picture of anything.
  6. You may observe a strange artifact in the saved picture, which coincides with the mirror frame displayed on the application screen.
Speculated Cause:
  • RenderTexture.GetTemporary seems to be used to obtain an intermediate screen buffer when taking a picture.
  • However, the render texture might not be completely cleared, resulting in its depth buffer contents from the previous use remaining. The buffer seems to be accidentally used for the inside-mirror image by VRCMirrorReflection.
  • This leads to some areas being obscured (by depth testing) in the picture and producing an image with strange artifacts.
Attached Images:
  • 2560x1440 screenshot, no issue.
  • 1920x1080 screenshot, contains a strange artifact.